Cooler Pictures and Comments from Customers!

There are over EIGHTEEN THOUSAND CoolBots running between 35 & 60 degrees F out there in the world! Here are a few of them!
For more information about the CoolBot in recent news, including articles by owners, universities, and governmental agencies, be sure to check out our news page as well:


It has been several months since I purchased the Coolbot and I am very happy with the performance of it. My dad constructed a 5 X 10 cooler inside his garage for our butchering. ...we insulated very well, it performs perfectly. We set the temperature to 36 and the Coolbot maintains that very well except when we are in and out of the cooler many times. I knew this would happen because of the upfront information you provide on your site. At those times the temperature only rises to 40 degrees and that is very much acceptable. The Coolbot has made it possible for us to do what we love for a fraction of the cost. Much thanks.


We are operating the unit at 36-38 degrees with no adjustments to your default sensitivity and response settings. It cycles to 38 and starts to heat the sensor.....dropping down to about 34 as the cycle completes. Electric use was about $25 for one rather warm month, and now is non-measurable in the cool of winter. The air conditioner compressor cycles very little.

Kudos for a solid, dependable unit.... I need to "set and forget" the problem of keeping ALL my food and products cool.....I've been at the "Back to the Land / Homesteading", game since 1971. You can occasionally find our name in some of the iconic publications of the era. This unit is in the top 10 "Best of the Best" that I have experienced in 44 years.

Michael S. | Arkansas

Note from Katie: For the complete write up, see Michael's article on our news page

Attached is our completed CoolBot Shed. We are using the 12,000 btu Danby air conditioner. We use it for aging our venison and it works great. The room is 4' x 8' and it cools down immediately and maintains the temperature. Great product!


Hi guys, we bought our coolbot on 9-25-14 and love it. We have hung deer in it so far, and will use it for lamb in a couple weeks. This is for our home butcher shop. We are looking forward to using it for beef and pork next year as well. Thank you very much for inventing and selling this product. (and for doubling our warranty as well)

Jason and Maria | Washington

We really like the way that the coolbot works. The cooler is 7' x 10' we installed a 10,000 btu LG ; I know that you don't approve of this brand it was the only kind we could find this time of year. We set the coolbot on 40% and it only took 15 min to get from 64% to 40%. I ran it for three days with a deer hanging and it never missed a bet.

Dale H. | Kansas

Hi Katie - all good now with door properly sealed. The Coolbot is happy and I am looking forward to serving cold beer! Thanks,

Lance | St. Francis, South Africa

A nice video on a beautiful home cooler being powered by a CoolBot.

This is the system I have, it works great! I wouldn't ever get another compressor system-this one works amazing!


Here is a beautiful build of a mobile trailer where Jeff has installed two 24,000 GE's.

I finished the installation of a 12k BTU GE, Model AEM12AS Air Conditioner and your CoolBot as you recommended. Wow! Temp inside cooler went from 73 degrees to 34 degrees in 44 minutes! Thanks for a great product.

Roy | Alabama

Hello Ron,

I have a small apple orchard in Ontario and need cold storage for the apples from the time they are picked until they are sold, approximately 4 to 6 weeks each autumn. I have an insulated area that I usually use as a garage for my pick up truck. It is approximately 12 ‘ wide by 24’ long by 10’ high.

After getting a quote of $6,500 to supply and install a conventional refrigeration system, I decided to continue looking and found your add on the Internet. I checked out your site, including recommendations, how to install, and testimonials. I decided to give CoolBot a try.

I purchased a 24,000 BTU Haier AC unit from the supplier you suggested in Canada, and a CoolBot unit. After completing the required electrical, I installed the AC unit and the CoolBot unit and turned them on.

I had a little icing at first so I adjusted the fin setting to 2. The system has been able to maintain the temperature at 38 -39 degrees. Now that the weather has turned cooler it has dropped the temperature to 36- 37 degrees.

I am very satisfied with the CoolBot and what it has done for our apple storage needs. I have attached two photos of the AC and CoolBot in action. I read in your literature that you double the warranty on the CoolBot if a picture of the installation is sent to you. Hopefully, this will satisfy your requirements.

Thank you for developing such an amazing product.


Paul | Ontario, Canada

I certainly do not write many reviews but I simply must with this experience. The compressor died on our WIC with a whole lot of beer within. I had been thinking of a CoolBot and when I called, Katie answered and worked out a solution with me. She was awesome. It was late on a friday and I received the unit on the Tuesday afternoon on a LONG weekend in Canada. The unit was in service in no time and appears to be working fabulously. Thanks Katie, you and your CoolBot rock!

Randy | Ontario, Canada

Our walk in cooler project was in the back section of a shipping container. using ridged foam insulation. Our meat was in a temperature staying between 34 - 37, depending on how often we opened the door. The a/c hardly ran and I set the fan to the lowest setting as the highest setting took it to 28! Just an amazing piece of technology. CoolBot (walk-in cooler controller) . We installed it in minutes, it works amazingly well for a walk in meat cooler. Deer next! Highly recommend this product.

Raised From the Bed Farms

Heres an ad from the company DuraPoly Industries. They build coolers based on the CoolBot!

Here is a great video showing a CoolBot being used in a cooler for flowers and tips on maintenance.

I'm "tickled pink"! :)

My total cost was about $900 and a lot of work for wiring and installing the A/C. The CoolBot solved a problem that I had been pondering for several years. Last year I called a refrigeration contractor but he never even bothered to return my calls – maybe he considered this job too small? I had seen my neighbor’s commercial refrigeration units and cold storage rooms and was envious but I could not afford to spend thousands of dollars just for our home-grown, and home-use vegetables. I found CoolBot using the internet search feature. Now we have a LARGE, walk-in refrigerator and can store foods from our garden and greenhouse – as well as other items that like to be refrigerated, like beer and cider! And, lucky for us, it’s downstairs in the basement so access during the winter will not require going outside.

Although it is not currently connected to our solar photo-voltaic system, it could be in a sustained contingency. We have 3 freezers and a refrigerator that are already connected to the solar PV system (with battery and generator backup). Now with the CoolBot we are feeling very secure and eating our own fresh produce! Thanks Ron and Katie and the folks at CoolBot!

Dick D.

Good day,

I got my CoolBot this past week, I read the instructions and said to myself it can’t be this simple to install, well to my surprise it was. I have a 6X6 cooler box with 10000 btu window unit and 2 hours later it was at 38° with the r30 ridge foam insulation all the way around. Let run all night long and next morning all is still well. Glad I was able to find out about this product, I have pears and apples in it now all looks great.

Thanks for a great product

Alan S. | South Carolina


I am writing this to show you our building process for our walk in deer cooler, I read in the installation instructions that if we supplied you with photos of our coolbot, that you would double the warranty on the unit.

We built a 9 X 9 cooler.

We poured a cement pad with a drain.

We then framed in the walls, and roof, we installed siding, and insulated the walls....

One of our friends acquired a cooler door, and we framed it into the opening for our cooler!

Our test run got the room down to 39 degrees, much to our liking.

On Sep. 24th, I was able to christen the room with our first deer, and the coolbot is working excellently!

We even took it one step further, and installed a Quirky Wink Spotter Sensor, that will give us notifications if the temp goes above a certain temp, so we know that something happened to the unit, so we don't lose any of our precious venison! Guess you could call us high tech rednecks!

Thanks Coolbot! We hope to get many years of use out of our new cooler!

Thank you,

Lloyd V.

Outside view of cooler using CoolBot. Not quite finished but got power connected and CoolBot hooked up so did test run. Took exactly 1 hour to go from 80 down to 35 degrees!


Here is a 12'-2" Florida Gator 510 pound in the cooler I built with the GE 8000 btu a/c you recommended. It pulls it down to 39-40 with no problem for the 3 hour trip to the processors. Thank you,

Roland | Florida

Dear Ron,

Love . The cooler is working excellently. But the Fin sensor got damaged with the sharp edges of the AC. I am using the spare. Can you send a few of them ? Can it be repaired here? I may ask my USA contact for the payment and delivery. A few pix are attached.

Annapurnananda | R.K.Mission, India

Here is a CoolBot being used in a mobile cooler that was put up for sale on! Eric did a great job on this build. To see the listing and more pictures follow this link

I have been wanting to put together a small walkin cooler to hang deer in. After researching I found out about your coolbot. I found a 6'x6' walkin cooler box.I put the cooler together in my work shop. I installed a G.E. 10,000 btu a/c and your coolbot. This system works fantastic. I set the temp. to 38 degrees and it takes about 35 minutes to reach it. I could not be happier.Thanks for a great product.


Dear Ron,

Attached are pictures of the Cool Bot in our vintage deli case. We have rebuilt the case, with new glass, insulation and of course the Cool Bot. We started out with an older 6500 BTU LG unit, have upgraded to a new HAIER 8000 BTU unit. It will bring the case down to about 38 degrees in twenty minutes from room temp.

The case was given to us in April, we heard about the Cool Bot, purchased it and went about restoring the cabinet. It was a “simple” project that ended up with a major restoration. The cabinet originally had static cooling, was “insulated” with brown fiberboard, and had regular pane glass. It was taken down to the boards on the bottom (used originally as shipping pallets). We then put in four inches of rigid insulation on the bottom, added one inch on sides and top.

The Cool Bot works so well on the deli case, we are working on plans for building a walk in for our restaurant/tap room. By the way, at the request of our local health inspector, we moved the Cool Bot from the inside of the cabinet to the outside for easier monitoring.

Thank you for an excellent product.

Mike and Kris | Washington

So far so good... between 33 and 37 so far

Tito | North Carolina

The famous ALVIN submarine ( undergoing tests on life-support equipment in a cold room powered by CoolBot in July 2014! The coolest use yet for CoolBot!


Coolbot is truly a fantastic product! We are an organic berry farm from Canada and have chilled product right out of the field into the 6x8 cooler @ 34* F thanks to your engineering. Thanks for the quick shipping and detailed set up instructions!


Kenny | Canada


Just wanted to let you now that the truck goes down to 38-40 degrees without much of a problem. The bigger windscreen is better for gas mileage. I went to a 4 foot windscreen gas mileage went up .5-1 mile per gallon more without cab a/c but with refrigerator running. Those delays on the heater really make a big difference of getting it colder without freezing up. I use a 45 second delay on both units and works great. Tried less but would freeze up so went back to 45 seconds.

Thanks for everything


Hi Ron and Katie,

Just to let you know our CoolBot has been working without a hitch ever since Ron's call a few weeks back. In addition to all your great advice (including disengagement of secondary sensor), I also figured out from your website that our primary frost sensor was in the wrong place. The person who helped us with installation had already done another CoolBot (some years ago, with a different A/C unit) so I didn't think to double-check placement straight away.

BTW rather than waiting to see where frost would start to form again, I took note of where ice was last to leave (as in a spring snow-melt) with just the A/C unit fan turned on high . Worked slick -- I was able to pinpoint optimum frost-sensor placement without waiting for problem to recur (yet again!). FYI a pool thermometer floating in 5-gallon bucket of water is also working great for monitoring product temperature.

Thanks again for everything,

Rebecca | California


The coolbot has done the job well this past year. You were right about the fin sensor. Thanks for the new one. It did the trick and we've been humming along with the pickles.

We are taking another space to expand and will be using another Coolbot.

Thanks for the product and the service.

Yi Wah Roberts | Virginia

Here are some photos from a recent program conducted by HortCRSP and UCDavis working on a project to help provide cold storage to farmers in Honduras, India and Africa. These are pictures from construction in Aura, Uganda using two concentric mud brick walls separated by a 30 mm cavity that was filled with plastic bags filled with rice husks. You can read the rest of the article here

Here are photos from Dr. Neeru's project with Amity University in Noida, India in collaboration with UC Davis and HortCRSP. They worked on creating a cooler using low cost insulation technology. Using mud and rice husks for the walls, they were able to build a cooler that could keep crops cool improving post harvest quality which in turn creates more opportunities for jobs, education, and improved quality of life. To learn more read the whole article here


Hi Ron,

Well, it took 3 years but i finally got it installed and working today. It's a bit of a weird installation - although I'm sure you've seen stranger. The pictures will explain it better than I can write - basically a frame with wheels that a "door"hangs from which has the air con mounted to it. I open the side door on my truck, wheel it over and (after a bit of heaving) it slots in and I plug in and i have a cool room! Just need to wheel it backwards in the morning, close the side door and drive off with the truck driven cooler taking over. Still a bit of work to do to seal around the door but it seems to be working fine!

Hugh | Estonia


Attached is a pic of the coolbot. It is running great. I got the cooler finished just in time for Mother’s day what a great help it was. I sold a 6X6 Floral cooler for enough money to build an 8X8 almost double the size. Got tried of repair bills on the floral cooler. I read everything on a coolbot I could find before buying it all the reviews are great except I found one on a HVAC site they said it would never work. They are wrong. Wonder why they knock it, no repair needed maybe.

Brian | Colorado

Dear Katie,

You guys rock! I received new sensor on Monday back I business yesterday just I time for wedding flowers. I turned my tiny pump house into a cooler until I can afford a proper space.

Your customer service is awesome! Thank you very much


Pictures from Economy Coolers. They sell pre-made cooler boxes already outfitted with CoolBots and air conditioners in Tennessee. Contact Richard Finchum (call 615-417-0637) for more information if you want to buy a ready-made system. He says their beer coolers outfitted with CoolBots keep the coldest beer in the state of Tennessee!

Here are photos of the Brewsters Draft House store# 9. We built this and used FRP as cladding both inside and out. We used a 24,000 BTU aircon from GE with your coolbot. Known for the coldest draft beer in town.

Pictures courtesy Economy Coolers | Tennessee

We duplicated this walk in cooler draft box from Brewsters first store. Used same 24.000 BTU aircon using your Coolbot. We covered this one inside out with FRP and then added a wood exterior for a comfortable woodsy look.

Pictures courtesy Economy Coolers | Tennessee


I saw your post on the BA Forum about CoolBot. We’ve been using the product in our business since we opened last August. I can speak to the good and bad, as we’ve had to deal with some issues that are now (finally) resolved.

First up, I know a number of brewers in the Denver area who use CoolBots and love them.

So, about our cold room. We converted an old AT&T store to be a Colorado Craft Beer Tap House. We have 30 draft lines. Immediately behind the main “store” area was a storage room, basically 6 ft wide and 15 feet long with a 10 ft high ceiling. We wanted to drop the ceiling to 8 feet (to give us less volume to cool) but the City wouldn't let us without completely re-doing our sprinkler systems. We took this room and stripped drywall off all the interior surfaces then filled the walls and ceilings with rigid insulation. Filling in the stud walls we probably have a bit over 3” in the walls (we wanted 4”) and about 6" in the ceiling. Our construction specs called for the walls to be filled with spray foam but we had some code issues and had to use the rigid. The walls and ceiling then have plywood sheathing and are covered with FRP panels. The floor is bare slab concrete. Inside the cold room we have 30 kegs (1/6, 1/4, and 1/2 bbls) along the long walls on “double stack” keg shelving and another 6-8 “backups” on keg dollies between the shelves. We have a cold room curtain over the door opening. The door is steel - insulated, but not a true “cold room” door.

The doorway is at the end of one of the 15 ft walls. As you stand in the doorway, there is a 6 ft wall to your right. This is a common wall with our neighboring business. Ahead of you is a 15 ft wall with the keg shelving. We have a direct draw system, so there is an uninsulated “window” roughly 1 ft tall x 10 ft long for the shanks and faucets. The only separation between the cold room and the bar area (in this window) is the stainless steel tap wall. On the left end of the room is the other 6 ft wall which backs the hallway from our bar area to the bathrooms. Along the door wall is more keg shelving (to your left as you look around the room). One other note: the door wall backs to an interior hallway that leads to our storage area.

As we planned the space, we were limited in where we could place the CoolBot and A/C unit. One 6 ft wall was out because it is a common wall with our neighbor. The other was out because it would exhaust into our customer area (and directly over the thermostat for our entire space). One 15 ft wall was out because it would require the backside of the A/C unit to be right above our bar - ugly, noisy, and heat producing. So, we had one option which was to put the unit on the remaining 15 ft wall. We did the calculations, upsized slightly, and installed a 24,000 btu GE unit directly above our door, because that would mean it would vent into the storage hallway. I didn’t consult with the folks at CoolBot about our plans before we installed everything.

For the next several months we struggled trying to get our cold room temp below 40 degrees. Measuring beer temp at the glass, we were around 43 degrees. As you can imagine, we had lots of foam issues. We also had frequent icing on the face of the A/C unit. We installed a few “desktop” fans in the cold room to move air about. That took care of most of the icing issues, but we still couldn’t get the temps where we needed them. I spoke with Ron at CoolBot a few times to see what he recommended. His feeling was that the problems we were encountering were caused but the placement of our unit. Ideally it should have been placed on a short wall so that it would blow the length of the room. By placing it on the long wall, in the corner, it was blowing straight across the short dimension and the “bounce back” was causing the icing. The fans took care of most of that, but we still weren’t getting enough cooling efficiency to get the temps down.

By the way, I wish that every business I deal with had the level of customer service that CoolBot provides.

My next step was to contact a commercial refrigeration company to see if they had any suggestions. First, they confirmed everything that Ron had told me. They also said that using a CoolBot made a lot of sense (even thought they had never seen one). They investigated our space to see if it would be possible to install a “real” cooling unit in the ceiling of our cold room. Initially they felt it could be done (at a cost of $5000 - $7000). After more investigation they found that the configuration of our ceiling and the wall structure would make it very difficult (if not impossible) to install a unit. The quoted me a price of $10,000 to $12,000 - and I would need to take care of electrical work, dismantling the drop ceiling over our bar area, and then rebuilding the ceiling.

So, I went back to Ron at CoolBot. His first thought was to remove the unit we have, fill the hole, and reinstall it in the 6ft wall that backs to the bathroom hallway. We talked about the issues it would cause - heat and noise - and that it would wreak havoc with our thermostat. Then we talked about moving the unit further down on the 15 ft wall (where it is). In this location it would create heat and noise across from the bathroom doors, but we could live with that. We would be looking at about $1000 in costs for construction and electrical work. We also talked about installing a smaller second unit, but the saving would only be about $100. At that point we decided to install a second 24,000 btu unit across from the bathrooms (where we thought about moving the existing one). Since we didn’t have to fill and insulate the original hole, our construction and electrical costs dropped to $800. With a $450 A/C unit and a $399 CoolBot, total cost to install the second unit was about $1650. With two 24,000 btu units each works a little less, and we basically have a backup if one goes down - temps would go up a little, but it would be far better than not having any cooling.

So, we went ahead and installed the second unit. Right before turning it on, I checked temp in a cup of water I keep in the cold room (39.7 degrees) and at a served glass (43 degrees). 24 hours later, with both units running, I measured 35.2 degrees in the cold room water cup and 38.1 degrees in a served glass. We’ve been running this way for a bit over a month now. Temperatures have consistently measured at 35 inside and 38 at serving. The CoolBot over the door (the original unit) shows 37-39 degrees on its display. The new unit shows a fairly constant 35 degrees. Our foaming issues have pretty much disappeared.

We measure “efficiency” on our kegs - how much of each keg we actually sell - and we’ve seen the numbers go from the high 80s to the mid-upper 90s. There are lot of reasons for not reaching 100% (foam, waste, sampling, etc), but a 1% improvement in efficiency gives us a bit over one more pint to sell from each keg. At our current sales volume that equates to about $200 in added revenue per month. If we can see a 5% improvement, then our $1650 investment would yield an annual $12,000 in extra revenue. There is some additional electrical expense, but I can’t say for sure how much (yet). Our most recent electric bill was up about $85 from the previous month, but the weather was a lot hotter and we also installed a new beer fridge.

So, here are a few things I would say about using a CoolBot unit:

  • Put as much insulation as you can into your cold room.
  • Do all the calculations for your space (on the CoolBot website) before you size your unit. Then do them again.
  • Try to install your unit so that the airflow disperses as well as possible. You have a square room, so having it up high in the middle of “any” wall should be good.
  • Email Ron at CoolBot ( if you have any questions or just want to make sure you’re planning correctly. I probably would have saved a lot of headaches if I ran things past him BEFORE I installed the first unit.
  • Clean the A/C unit fins - both inside and out - every couple of weeks. If they get dirty, you will see a LOT of ice form. We use a fingernail brush on the fins. It takes longer to move the ladder than to clean the fins.
  • If you’re venting into an inside area, be prepared to deal with condensation. We have to keep a bucket under our “original” unit due to condensation. The newer unit doesn’t create as much condensation, but we still defrost it monthly and get rid of any condensation that has built up.
  • Work with a good contractor who understands your business. Our guy was a good commercial builder, but he didn’t know enough about cold rooms to be able to help.

We are really happy now with the CoolBot, and our total investment is about $2500 for the two units including construction and electrical. We’ve saved a lot of money vs a commercial unit (which we later found out we probably couldn’t have done anyway).

Hope this all helps you in your decision. It was a lot to remember and type up, but its good for me since I now have it all pretty well documented!

Michael | Colorado

Hi Ron

....fired it up set the CoolBot @5 degrees [41F] worked perfect and last season kept our flowers in perfect condition for our 55 weddings !! Set @5 degrees and worked perfect when the outside temperature was 48:-) [118F!]

So thanks for this great invention :-)

Gary | Florist in Spain

Andrew J. - Cooler Pictures

This cooler at Stonewall Farm in NH is used to primarily hold milk from their Holstein's. These guys have a pretty awesome blog we have linked on our news page that I'll copy and paste here too. Stonewall Farm

This is an awesome interview with Motherplants Nursery owners Lexi and Margaret. Based out of Ithaca, NY this commercial nursery uses their cooler for cooling off cuttings they take from the field and keeping plug trays cool before shipping.

Here are pictures from a very cool and interesting cheese room in Sebastopol, CA.

Here is another awesome video testimonial from a The Rhinehouse bar in Ithaca New, York. Built with used cooler panels from a grocery store, this 18 foot long keg cooler cost only $2000 total. This short 2 minute interview touches on the low cost build and the ease of maintenance.


It took a while to get everything up and running but I made it. The fact is, one can do anything in just takes more time! The cooler is constructed in our lower level brewery addition. I was able to find 4' X 8' by 4" foam panels in Puerto Vallarta for about $13.20 US each. I framed the room with 2X4's on a 48" spacing. The floor is also 4" foam with 2 layers of 5/8" particle board on top, ceiling is 5" of foam. I wrapped the outside with 5/16" paneling and painted it. Inside is just foam. I covered all the exposed studs and caulked and taped the heck out of it. I lucked out on the door and hardware, it is from a commercial walkin. I found it on Craigs List for $50.00 a couple of years ago. The cooler measures 6' X 12' interior. I'm using a Haier 12K BTU AC unit. It ain't pretty..but it sure works!

Had an ice problem at first but then just followed your clear/concise instructions and moved the "fin" sensor down, That cured it.

When fermenting ales, I just unplug the BOT and move the bundled sensors back up against the fins and hold my 72 degree temp just fine on the AC thermostat.

When crash chilling after fermentation, for brewing Lagers and for carbonating the finished kegs I just drop the sensors back down and plug the BOT back in. I am able to hold 35-40 degrees easily while running in econo mode. Unit cycles on for about 5 minutes every 30-45 minutes depending on how often I open the door.

I can't say enough about what a jewel this product is! With the emerging Nano-Micro brewing revolution under way here in Mexico, I would think you have a heck of a potential market here!

Thanks again for a great product!

Cliff P. | Brewing company - Nayarit, Mexico

I recently purchased a CoolBot and couldn't be happier. This CoolBot is in my milk cooler at our grocery store. I have a Frigidaire AC and have had temps down to 28. It does vent to an inside room and then goes outside through the dock. The average temp is 34. Thank you so much for such a great product. I will soon be purchasing my 3rd CoolBot.

Jack C. | Grocery Store Owner

A Farmer video testimonial by Farmer Anton at Early Morning Farm. This was REALLY nice of him to make! PLEASE NOTE: Anton has been so very gracious to take the time to make this video we ask that you please do NOT call him directly for more information. He really says it all here, and there are too many thousands of people checking out CoolBot each year. It gets overwhelming when people are called... and I don't want him to make me take this down :-)

A Food Bank CoolBot Testimonial! What an AMAZING organization doing such terrific work! We got all enamored hearing about the organization and we cover the costs and CoolBot only at the end. This is a short two minute video of an INCREDIBLE woman doing incredible work. Again, please do NOT call Sara directly. She says it all here in this video and too many calls will force us to remove the link to this video.

On 5/4, I set the air cond. at 'cool' instead of 'energy saver'. And on CoolBot, 37 degrees [Ron snipped remainder of sentence]
On 5/15, Temp on digital thermometer in rear of cooler, reads 37.2 degrees
On 5/15, the usage for new settings for 11 days was 106 kwh - 9.6 kwh p/day. Cost at .13 per kwh comes to $39 per month.
In contrast, at 40 degrees at previous setting, it was using 3.5 kwh per day - .45 cent per day [Ron slightly edited this sentence for clarity]
In winter, usage is 1.3 kwh per day - will reset it to 37 degrees and 'energy saver' when cold weather arrives.

Sara | Runs a Food Bank in Ithaca, NY

(This is an email I got last year from Sara. Their cooler is 8x8. They are using a watt-meter on their CoolBot. Note the huge difference (from 45 cents per day to over 1 dollar per day just changing the temperature from 40 to 37. (there is another email about the previous use which I will also post somewhere here). This amount of energy use is pretty standard for a "conventional" walk-in at her use level, door openings account for a huge amount of energy use. At 40F, CoolBot systems are amazing in terms of electricity use. 36-38, we think we are pretty even. For people running 35 and lower, we don't have real-world data yet, but we THINK we are probably not as efficient! The CoolBot would still save you money in the short run, but in the long run, if you are always below 36F it will have higher electric operation costs.)

My staff just said thank you many times in the past few days for having this cooler.

Marc H. | Minnesota


Just wanted to let you know that we've been using our walk-in cooler for about 2 months now (mostly for storing beef), and it's been serving us well.

We have a Samsung AS12UUPX (12K BTU) split-unit AC cooling a room of about 10 feet (L) x 6 (W) x 8 (H). We used 4-inch Styrofoam insulation all around, save for the door, which has double insulation because it faces the morning sun. We converted an old bathroom which had tiled floors as well as walls.

Total cost was around 40,000 Ethiopian birr, which amounts to a little over $2,000. Could've done it a bit cheaper were it not for the fact that the AC cost three times (?) more than it does in the US.

Really excited about expanding the use of this technology in Ethiopia.

Mathews T.| Ethiopia

I've attached a few photos of our newly constructed cooler using your CoolBot controller.

We used the University of Kentucky version on your web site with your couple of suggestions regarding rigid foam on the inside.

The floor is 5 1/2" rigid foam with 3/4 ext ply wood (2 layers on top) sandwiching the foam with no framing.

The cooler is 8'x8' with a 12000 btu LG air conditioner. We built it inside a barn that we did insulate the roof structure of the barn above the cooler with fiberglass insulation.

The cooler went from 70 degrees or so to 37 degrees ( the temp we set in the CoolBot) within 1 hour 30 minutes. It really was about an hour but I wanted to give you a conservative number.

We are not quite done, but as you can see from the photos we got her going to hang our hog. Need a bit more work on the inside including permanent electric with more meat hanging poles and some trim. We may also hinge the door in the near future.

Very happy

Tom K. | California

Hi Ron,

Thank you so much for designing the CoolBots! We purchased 3 last year for our CSA vegetable farm. We were able to build three 10 X 12 foot coolers for less than the cost of one commercial 10 X 10. They ran all summer and winter without a hitch. Our electric bill was also very reasonable. We had a rather hot summer here in Pennsylvania and they were able to keep our coolers down to 33 even when the temps were in the 90s. We used LG 24,000BTU units which held up well once we got a few kinks worked out. The support you gave trouble shooting the air conditioner issues I had initially was priceless. Basically warm air tends to find its way into the electronic control panel no matter how well we tried to seal it so we just leave it hang open and then everything works great. I just purchased another one since we decided to build a fourth cooler. It has been great to have enough cooler space to segregate our vegetables into ideal storage temperatures and humidity. We could never have afforded this much storage space with the price of other coolers. I tell everyone who will listen how great your design is!

Thanks again!

Sara | Pennsylvania Farm


A few weeks ago, an energy auditor from the Bonneville Power Administration visited our Co-op. He was seriously excited to find we had a Klimaire with a Coolbot for our walk-in. Apparently he had heard of Coolbot, but had been skeptical. Our "never above minimum rate" power bills on that meter impressed the Hell out of him!

If we had room, we could probably add another cooler to that meter, and still not increase our electric costs!

Thought you'd enjoy hearing this. Our last challenge with the cooler was apparently due to old batteries in the Klimaire's remote control.

I hope you sell a million CoolBots. You've really done somethin'!

Al | Washington

I have been using your product at my restaurant for a few months now. Fantastic is all I can say about it. Any plans for a unit to make a freezer model? I would buy one.

Jeffrey D.

[We get asked about doing a freezer pretty often, but... it's not possible with an a/c unit. They are great down to 36-38F, but even below 36F our system isn't so great. While we do have some customers cooling at 33-34F, they have to massively oversize the air conditioners compared to our specifications and the recovery (every time people open the door) is REALLY slow.]

"My Redneck Cooler"

I finally got the cooler put together and the AC and Cold bot installed. The cooler is made from old cooler panels that were left out in the rain and cold for 4 or 5 years. They had water loged froze and swole up. The cooler is 8 x 7.5. The AC is a LG 18,000 BTU. It was 66 deg when we turned it on and it went to 38Deg in about 15-20 min. I still need to fill some cracks etc.

Im sending a before picture and it looks pretty rough. I will send and after picture when I paint it.


Melvin T. | Washington, Georgia

This is a seed-storage cooler used by ECHO: Educational Concerns For Hunger Organization. They have one running here in the US and then another one running Thailand as well. This is a really neat organization, you can read more about them and their work here:

It was very easy to set up and works great, a really innovative idea! I am a contractor who set it up for a client.

Nathan G | Charlotte, VT

Hi Ron,

Well it took a while to get it all done, but my walk in is up and running for a few months now and it's just great. I can get it down to 32F if I want with no problems at all. However I keep it at about 35 to 38. We are a small homestead and try to produce as much of our food as possible and also will be using the walk-in to hang our meat when we slaughter it. We tried for a few years to get away with just a cool room but we ended up throwing away a lot of our fruit and vegetables because we just couldn't get it cold enough early in the fall and then it would often freeze up in the winter. So far we've been really pleased and are already planning next year's crop knowing that we can now store it without fear of losing it because it just can't cool enough or cools too much. Oh and it's a great place to keep my homemade beer in as well.

This is a 4 by 8 room that's just off the milk room at the front of the barn. I had the room sprayed with 3 inches of foam when we initially built it as a cold storage, but I added another 2 inches of rigid foam on the inside, then put on cement board prior to finishing with ceramic tiles. The ceramic tiles really help to form a thermal mass and keep the fridge cool even after having the door opened for a while. The floor is also insulated the same way. The tile work is a bit much for a walk-in, but this was my first attempt at ceramic tiles and a friend who's a building contractor challenged me to a test of my skills by adding a diamond shaped border around the room so I took him up on it and there's the final results. It was good practice for when I tackle the kitchen and bathroom in the house.

Thanks for this great product. I have some hunter friends who are eyeing the fridge with a keen eye, so I'll be sending them your way.

Mitch C | Canada

Hey Gang ....

Awesome product. I had a old 8 x 8 ft shed, that was not being used. Bought a 12,000 BTU LG air conditioner ($319.00) from H.D. - insulated as instructed by your web site (did not insulate the wood floor). CoolBot arrived in the mail at 1:00pm. It was installed in minutes, and by 3:00 pm, I was at 33 deg.

Opened the door to take a picture - it jumped up a degree. This room will be used to age deer, and keep meat cool and firm while making sausage.

thanks for a truly great product!!

Rob T.

[Ron's note: This is a great letter, and I HAD to include it in the testimonials page!!! But this is not normal, actually... I think this just happened because the room was completely empty -- so it makes us look better than we are... But we are still AWESOME! It's just that empty room... you are just cooling the "air" so it can appear to be much colder than any product IN the room would actually be. If there was a thermometer in something with more weight than air (like a glass of water) then I bet that would have just been 37-38F. Check out our air conditioner sizing page for more information. ]

The CoolBot and the LG 24,000 btu air conditioner are working like a champ!! We are keeping our 9 x 11 root cooler in our basement at 34 degrees!! That gives us 6 pallets of roots that we are distributing to our 80 member winter CSA. The cooling system has already paid for itself at this point. We are also benefiting from the exhaust heat from the air conditioner into the other side of our basement below our kitchen. Rarely do you get double duty out of a heating and cooling system like that. This system is great for our application.

Paul | Sweet Land Farm

These things are amazing…I can easily get the temperature to 32 degrees in our room….we are very pleased with the CoolBot system.

Dennis M. | Ohio

Store It Cold Disclaimer: We're obviously psyched these folks can get to 32 degrees and we do have other people running that cold by super-sizing their air conditioners relative to their room size and never opening the door, but 95% of our customers shouldn't count on ever being able to see temperatures that cold. Check out this page for CoolBot

Hi CoolBot!

We got our cooler up and going last night! We have a 24,000 Btu LG air conditioner in our 10x12 room, it went from 76 to 45 incredibly fast! This morning the produce was at 37! Our room is almost empty right now so we took your advice on reducing temperature swing and it seems to be holding its temperature now.

We built the ceiling & walls of 2x4s with 3-1/2 Styrofoam in the cavities. We sprayfoamed every gap we could get the nozzle into and then caulked every joint on both sides. Then we sheathed it with 2" of poly-iso insulation on both sides of the walls and again spray foamed every gap and caulked all the seams. For the floor we laid 2" of poly-iso down inside a 2x6 frame and then used joist hangers for 2x4s. We filled the cavities with 3-1/2" styrofoam Again we caulked every seam and sprayfoamed every gap on each layer before we sheathed the floor. If you can build a tighter box I don't know how. Our room used almost 4 cases of caulk and a dozen cans of sprayfoam.

We were worried the air conditioner would run non-stop, but this morning we timed it! It seems to be running less then 3 minutes about three times an hour, and that is with us peeking in all the time to check the temps!

The quote we got for a cooler this size with used wall panels and a new compressor was $12,000 not including delivery or installation. This unit cost us under $3,000 including the air conditioner ($600) and Cool bot. We did get a deal on recycled foam off craigs list which saved us some money.

We are very happy with our cooler! We are sure it will improve the quality of produce our 100 member CSA receives and help us expand next year!
Thank you

Eric & Heather W.

[Note from Ron: I think this cooler has to about win the prize for most insulated and most tight. It's really impressive!!]

Really nice having direct contact if any issues occur.

Rose P. | Mecklenburg, NY

Air Conditioner controlled by CoolBot on a farm truck cooler in Indiana.

Dear Ron,

Love . The cooler is working excellently. But the Fin sensor got damaged with the sharp edges of the AC. I am using the spare. Can you send a few of them ? Can it be repaired here? I may ask my USA contact for the payment and delivery. A few pix are attached.

Annapurnananda | R.K.Mission, India

I purchased a CoolBot from you last summer. I built a 4x4x7 cooler to hang deer in during the hunting season. This unit is the easiest to install and works beautifully.

I am a licensed refrigeration technician and I couldn't have built this any cheaper or easier if I tried. It worked flawlessly last deer season and I couldn't be happier with your product. .

Lee M. |

[Ron note: We had to remove the picture of the deer, that's why this image looks odd]

We are now chilling just-harvested vegetables to around 35 degrees Fahrenheit [obviously not when the door is open like this], where they are happier then they have ever been. We also dawdled around in the cooler for about 10 minutes after harvesting, we were so hot ourselves.

Aaron and Kara

I built my own walk-in cooler 8x8x5. Insulated with 4" of foam board insulation. Siliconed and sprayed insulation on all open areas. Installed an LG a/c unit 8000 btu capacity. It's been operational now for 1 week but so far it works great! My walk-in cooler, as you can see, is inside my barn located in the North Country, central New York state. The box reached temperature down to 38degrees w/in several hours. Great product so far!
Thank you very much!

Anthony | NY

We found an old cooler box, foamed the cracks, and put it under a Carolina Carport. The CoolBot works great with our LG AC. Thanks for your unstinting help with my questions.
Great service! You guys are the best.

David K |

Here are pics of the 8'X8'X8' cooler we built. The CoolBot works great! It dropped the temp from 87 degrees to 38 degrees and held it there.

Frank | Hazelhurst, MS


I was skeptical but was building a walk in cooler for meat storage and aging and I stumbled across your website while looking for a refrigeration unit. After much debate I purchased a CoolBot versus the cost of a typical walk in refrigeration unit. It does work so I wanted to share my story. Your website contained lots of useful common sense information both the good and the bad and that along with the testimonials is what sold me. I may get a little long winded here but perhaps this may help others down the road.

I needed a small walk in cooler to chill a couple deer or an elk every now and then. The inside dimensions are 4' by 6.5' by 6.5'. It is built inside the back of my garage, with the garage back wall being the back wall of the walk in. I bought a 10,000 BTU LG AC unit per your recommendations. I had access to tons of free foam insulation and siding materials left over and headed for the trash from a construction project. I have 4 inches of the yellow foam covered with plywood for the floor. The walls and home made door have 7.5 inches of white foam insulation. The ceiling has 9 inches total foam (4 yellow and 5 white). I paneled the interior with the 1/8 inch hard board type stuff just to keep an elbow or deer leg from going into the foam. Exterior is covered with hardy plank siding.

Also as the pictures show I mounted the CoolBot on the exterior of the walk in. That was by design because with animals in it I didn't want to have to be opening the door and losing the cool to see what it was doing. I plan to put meat in it and leave it be until butchering time comes along. I also added a fairly inexpensive indoor/outdoor wireless thermometer as a backup check on the interior temperature.

Here are the results of my first test run on an 83 degree (inside the garage) Arizona day:
Walk in interior temp was 81 degrees at turn on. CoolBot set at 33 degrees (not that I need that for aging meat, but just to see what it would do). AC unit set at 60 and on medium fan speed.
[**Ron's NOTE: We normally encourage people to do high fan, but he has a larger air conditioner than we recommend, and the room was empty, so it doesn't matter in this case, plus his insulation is AWESOME!]
In one hour room temp was at 40 degrees.
In two hours room was at 37 degrees.
In four hours room was at 35 degrees.
In six hours it hit 33 degrees. Remote thermometer mounted by door said 33.9 degrees. At that point I opened the door and shot the room with a temp gun for a third check on things. The floor was 31 degrees and the walls were 32 to 33 degrees. The AC unit looked fine.
At that point I turned it off had a beer and called it good.

Cliff P | Mayer, AZ

In this video, Farmer Paul take us on a tour of his cooler which he used insulated concrete forms (ICF) that he left empty so that it could be moved easily!

Hawaiian Cooler

..the room we converted into the cooler was 11x11. so after spending quite some time trying to find the right insulation (in Hawaii) we still ended up getting the white Styrofoam from home depot (R-3.6). to get that blue stuff was just impossible.

..this CoolBot is a utmost genius idea. when i started to look into these commercial coolers it got kind of frustrating to see the horrendous prices and everything that goes with it. for a short moment i had that thought if an AC could be converted. strangely enough some time after i came across you guys website and was kind of fascinated about the idea and that it works that way.

if i get the opportunity i will spread the word.
kind regards

Mark | Hawaii

Ron, some good news, checked it today and it was 35 degrees, which I was pretty happy with.


Just a follow up. I bought a CoolBot earlier this year for a cooler I built down in North Alabama. It's brick, 6' x 16' x 9' with a 14,500 BTU AC unit. Just wanted to let ya'll know how it's doing. Holding 37 F and 55% RH very steady even in upper the 90s and the AC unit only runs maybe ten minutes every hour or so if I keep the doors closed (double steel doors). It's so cold it actually hurts after a few minutes, being used to 90s summer temps outside. I do have several large shade trees protecting it from the sun which helps but it has a concrete floor with no insulation so I'm very impressed with how well it's been working. It did start recently icing up a bit but I forgot I need to clean the fins once in awhile so I did and it works fine now! :-) I'm very happy with it and will continue using the CoolBot. Outstanding invention!

Terry T.

working great
[In] 45 min 8ft x 12ft walk-in at 40 degrees
15 min later at 36 degrees

Carrie F. | Pampered Chef consultant


Update: I finally got my deer cooler constructed enough to install the AC unit and CoolBot. I had to change some wiring in the subpanel in my garage and finished last night. I followed the CoolBot instructions and powered it on. The temperature inside the cooler was 59 degrees F when the CoolBot and LG unit started. In about 16-17 minutes, the temperature dropped to 39 degrees F! Nice!!! The CoolBot had been set to 38 degrees F.

Ron Note: We visited Taos Pueblo in New Mexico and visited their incredible farm and were so excited to see that they used a CoolBot for their cooler! The whole place is a terrific model of practical sustainability and innovation. Like the greenhouse can be heated in multiple ways (including wood -- but SMART wood burning) as well as a solar hot air cycling system. Impressive place.

Hi Ron,

Just to let you know that the new settings you sent me worked like a charm. Now that I know my 8,000 btu will work, I will proceed with proper insulating (all styrofoam) and get ready for next year. We had a heat wave here (at least by our standards for late September), 70 F in the shade. The cooler fluctuated from 39 F to 42, depending on the particular day. Fantastic !! I don't know if I'm the only one who has tried the 8,000 btu unit (smaller than recommended) but if I am, you can tell them it definitely works for hanging game. Obviously the 11,000 or 12,000 is the better choice and I will eventually go to that anyway but for now, this works.

Dale A. | Staffing & Training Officer - Fish & Wildlife Division

Hi Ron

Thanks so much. The unit worked out great this year. Hope to be needing another one in the near future!

Jeff E. | Ohio

Ron- I just wanted to thank you for the quick response! I took a gamble, and installed the ac [Ron's Note: We were worried about an old Maytag he had that was digital but a questionable entity]

boy am i glad i did! we had the cooler down to 37 degrees in just 24 minutes!!!! (it started at 74).. 1.54 degrees a minute is way more than i expected, so thats great.

thanks again for the help, and you now have a testimonial that Maytag AC's do in fact work!
Just shot 2 deer this morning, so the cooler is getting its first real test as we speak!
thanks and take care

jon c


We've been running a CoolBot in our 6' x 8' walk-in for three years now and have loved it. It has given us zero issues until now. We are now getting a strip of ice a couple inches wide across the bottom of the fins on the inside and we have to keep unplugging it to let it thaw out.

Do we need to do any maintenance on the air conditioner?

Steve V. | Farmer, West VA.

[Ron's Note: The answer to that question is definitely yes! The problem here was just that it needed to be cleaned. (preferably 1-2 x's per year rather than once every 3 years!) Dust/Dirt/Lint blocks up the fins as well as the channel that takes the condensate to the back of the air conditioner. It can also get on the compressor causing it to overheat. Please pull your a/c units out of the cabinet 1-2 times per year and hose them off. Use a toothbrush down the fins even more often (we do it every couple months on our farm).

Hi Ron,

We are a Liquor, Beer, & Wine retail store in Blackwell, TX. CoolBot has been running for over seven months, and we are loving it. Our walk-in cooler is located in the inside of our store.

After comparing prices of manufactured walk-in cooler online, I decided to google homemade walk-in cooler. I came upon your site - TADA! All we had to do is build our own cooler, buy an AC Unit, and CoolBot. We read through your all of your notes and article links. We took most of your advice on building our cooler 8'x10', and discussed whether or not to used fiberglass insulation at all. Since we're a package store and all our products going to be dry, we went ahead and decided to use the R-13 fiberglass and 3/4" Polyisocyanurate Insulated Sheathing insulation in our walls. This is our specs on our walk-in cooler

[Removed for space]
We had a lot of positive response about our CoolBot Cooler

Lynn (and Billy, Robert & Rebecca) | Liquor Store owners in Texas

A very lovely person in a very lovely cooler

Hi Ron,

I wanted to send you a note to tell you how pleased I am with the CoolBot. I think I bought it from you in 2008. I built a cooler that is 7 ft. long by 6 ft high by 4.5 ft wide. Power it with a 8000 btu LG Air Conditioner from Home Depot. I have hung deer, moose and elk in it it the fall and keep cherries cool in the summer.

It works fabulously. I am trying to keep it somewhat of a secret that I have a cooler or during hunting season I know there will be a line-up of trucks in front of my house with deer ready to hang.

Thanks again.
Great Product!

Gary T. | Kelowna BC, Canada

Good morning,

Per our conversation yesterday, I wanted to share with you our very successful installation of a walk in cooler for our restaurant. We have a kitchen that has several reach in units for when we are in service, and we store the prepped food in those units. However, we needed a significant amount of additional storage, and built this walk in in our basement. It is accessed about 10-15 times a day by our staff to retrieve items.

We did not skimp on the installation, using 4" of rigid styrofoam insulation, 4" of Roxul (check that stuff out, it is wicked cool), with the addition of sheetrock, plywood, a 2x4 frame and FRP to finish the unit.

The materials for the walk in were about $3,000, the AC was $400 and the CoolBot was $299.
If you built it yourself you could save about $2,500 instead of purchasing one of a similar size.

Eric A. | Restaurant Owner in Lewiston, Maine

[Eric provided extremely detailed information as to how they built a cooler in their restaurant which we've posted as a PDF in the cooler construction of the website]

I have built a 12 12'X12'X6 1/2' cooler with 3" closed cell spray insulation, 1" hardboard insulation with 1/2" OSB on inside and outside walls. There is 4" of blueboard under a 4" cement floor. This is inside a barn.

Just wanted you to know that the cool bot is working great. The cooler is running at 37 to 39F all the time. I am super happy with the unit. Thank you for inventing it.


Farmer Dave | North Berwick, Maine

So far its working great! I tried this cooler before using CoolBot and my fins would always freeze up. Its really an amazing thing that it can bring the temp down that cold and not freeze up. My cooler is in the basement, I have 4 inches of the pink all the way around. Its used to store roses at around 38 degrees.

Thank You!

Kevin F


I just wanted to let you guys know we installed a CoolBot system at the Northern Neck Food Bank in White Stone, VA. The food bank serves about 4000 people a month and one of our most important goals is to raise the nutritional level of the food we distribute. Before we installed the cool-bot we stored all of our fresh produce in the warehouse. Unfortunately that means it lasted 24 hours at best, and we were throwing away hundreds of pounds of the most nutritious food available to us. Now we can safely store our produce long enough to meet the weekly distributions of our 24 pantries.

Thank you, your device has made a huge impact on the needy families in our community.

Director | Food Bank

Just wanted to share some details and photos of my walk-in cooler:
Construction details:
4" concrete slab
stud walls with OSB board on outside covered with tin siding
7 1/2" of Styrofoam insulation on walls and floor covered with OSB board and painted
insulated metal door
4" sandwich roof panels
interior free standing hanger frame
used an LG 15,000 BTU air conditioner
Exterior of unit is 8 ft by 8 ft
Thanks for your website instructions..

Kenneth S | Gerald, MO

Hello Ron,

I put your unit on a 12000 btu Lg. unit and it worked absolutely perfectly. This was one of the most enjoyable deer seasons I have had in seven years of processing due to your unit taking the early season pressure of warm weather off me. I had absolutely no problems at all and showed the CoolBot to many of my hunters. Many of them are now considering building their own coolers thanks to the CoolBot. I just wanted to say thank you for your help and for coming up with a outstanding product. I really appreciate it.

Richard Still | Owner Rick's Deer Processing

Hello there!

We are the proud new owners of a flower shop in the mountains of central Idaho (McCall) and after considerable effort, have finally gotten our cool bot to do what we need it to. Now that our cooler is up and running things are much more streamlined around the shop. Our cooler is only a 6x6, so it is small, but with 4 inches of rigid vapor-barrier energy seal structural blown-in foam, the cooler only runs about every 30 minutes if we don't open the door. With our 18K btu unit, it can go from 60 degrees inside the cooler to 23(our lowest recorded) in about 20 minutes. We've got it dialed in at about 42 right now which is why it runs so infrequently. I've found that I have to keep the settings pretty high in order to keep the room the right temp. That cooler unit is overkill (needless to say). Thanks for saving us time and money, even if getting it dialed in has been challenging!

Scott and Fallon F.| McCall, ID

[** Ron note: They did such a great job on the cooler, but this problem of temperatures getting TOO LOW when the a/c unit is more than double the size needed for the room is not uncommon and can cause cold-damage to product. Settings can be adjusted to make it work, but it's better to start with the right size a/c unit. We actually encourage florists to size up a BIT. (Like 10,000 BTU's would have been fine) but 18,000 was a bit of work. I'm glad they are happy, now, though and they should stay that way!]

I have to say that I'm extremely impressed with this little machine. I installed it on a 8000 btu maytag air conditioner and put it in my current small meat hanging room (4' x 6' x 7.6' h) which is far from insulated proper to try the unit out. After 2 weeks of checking morn & nite temperatures finding the unit only moved 3 degrees (40 to 43) even when the temps jumped to 90-95 outside.At current we are redoing the meat room over to proper insulation standards. I personnaly would recommend this COOLBOT unit to everyone who is considering a walkin cooler. Can't wait to try the FREEZEBOT!

Darrell & Rosanne | Ontario,Canada

[Provided non-metric conversion for US folks]

As a deer hunter, the past few warm seasons have presented many challenges regarding maintaining quality meat. Our camp invested in a 12 x 7 x 7 freezer box and mounted on a trailer for mobility. We discovered 2 days before the season, that the ThermoKing unit on the box was going to cost a considerable amount to repair. It was a quick fix after a visit to the local Home Depot for a 18,000 BTU LG and a phone call to CoolBot to over night a unit. The next day, in 2 hours, we completed the install on our mobile cooler.
Temperatures averaged in the mid 60's during the day and we were able to maintain a constant 35 degree F in the cooler with 12 deer hanging.

Thank you for a great product and for your excellent customer support.

Michael B. | Central Illinois

We used it to put our deer in. It got down between 35 to 37 degrees. They was asking 3 to 4 thousand dollars for an outside and inside cooling unit. With the CoolBot and ac it only cost us 700 dollars.
Thank you

Mark Cooper

We purchased a CoolBot in June of 2009. We raise vegetables and cut flowers. Previously, we had had a compressor unit to cool our walk-in cooler. The CoolBot works extremely well and efficiently. It cools down much quicker than our compressor unit did.
It uses much less electricity then our compressor unit used.
We are extremely pleased with the unit.
It was economical and easy to install.


Dianne S. | Coopersville, Michigan

Just wanted to let you know of our success with your cool bot.
We purchased the cool bot from you in May of 09 and I built a 8X12 walk-in cooler to store all of our produce. I got the 12,000 btu LG air conditioner. We had a great first month and the I called you with problems with the cool bot sensor. You replaced that and we had no problems. The first LG was bad because the LED got wet and you said to replace the unit. I returned it in June and got new unit that preformed well all summer and fall. We currently are using the cooler to keep apples and eggs in it.
It has been -10 to -15 here, I have shut the ac unit off and am keeping the cooler at 37-40 degrees with a small heater.
I figure that we saved ~18-20 kilowatts per day this summer with the cool bot and ac unit.
Great savings over the small floral cooler that we had in the past.
We have pictures of our installation on our blog spot that shows the cooler and ac/cool bot. That you can look at and use if you want.

Thanks for the great product.

Doug | Rolling Prairie Acres

CoolBot got "Twitter-recommended" by EuroFlorist Corporate to 57,000 flower shops on July 2, 2009!!!!! WOW!!!! (You have to search through for that date.) - you have to search through for CoolBot.

I built a 8x8 cooler, installed your extra-ordinary CoolBot with an A/C and boom! I got a real efficient cooler. Amazing! For a month and a half, 24/24, I kept the room around 37° easily and at the warmer period of the year. That was great.

And I'd like to thank you for your help. Your article is very interesting, lots of informations. TY again.

PS: I talked about the CoolBot to a couple other small farm owners and they ordered one! :-)

Marc-Antoine | L'Héritage de MAÉLI, Quebec

For several years now I have been wanting a walk-in cooler but they were way out of my price range especially since the only thing I wanted it for was to hang deer in the fall. It turns out a couple of weeks ago I was online looking for some sort of refrigeration unit for sale so that I could maybe build my own cooler and thats how I found the CoolBot.

I proceeded to clear out a corner of my detached garage and built a 6' X 8' cooler which has 4" foam board insulation on floor, ceiling, and walls. I'm cooling it with a LG 10,000 BTU unit and have no problem keeping the cooler in the mid to upper 30 degree range. I wanted to let you know that I am completely satisfied with the CoolBot, it works perfectly just as claimed and couldn't be any easier to install and operate.

I start Bow hunting for deer in September, and here in Kansas there has been many deer I have passed up, or just stayed home due to the temps being too high. But now that will no longer be a factor, not with the CoolBot, so thanks for making that possible.


Richard F. | Stilwell, KS.


Thank you for your quick response and concern when our new cool-bot showed an error read on the defrost sensor.

Since we reinstalled the new cool-bot it has worked flawlessly as advertised.

It is mush quicker to defrost than the original one purchased and the unit is only running about half as much.

We are using an LG 10,000 BTU unit to cool down below 40 degrees a 4 by 8 cooler room.

Although not necessary we have had it down to 33 degrees, I cannot believe how efficient this system is and how much better it cools than our old system did.

Thanks for a great product and for excellent customer service!

Kyle C. |

Ron Note: We edited out the picture of the dead deer, that's why this picture looks weird

We installed the Cool Bot and a LG 24,000 BTU a/c we got from Home Depot into our walk-in.

It took less than and hour to drop the temp to 38 degrees.

We did this in lieu of replacing our walk-in compressor.

The fix was about 1/3 the cost and it seems to work fine.

Here are our pics.

Patrick M. | Houston, Texas


I built this walk-in cooler in my wife's flower shop. It's been in service for about a month. Running flawlessly.

Cooler is approximately 7X9 [feet]. LG 12,500 AC. Everything hooked up easily. Works fantastic. After everything was running, temp. on 5 deg C [41F], I took the cooler door off the hinges to plane it down a bit. The temp jumped up to 16 deg C [61F]. After the door was re-installed the temp was back down to 5 deg C within 5 min.

Thanks for a great product. The flowers are doing really well.

Al | (A flower shop in Canada)

Hi Guys,

I spoke with you a couple of times last year after I bought my coolbot. I love this thing, and I tell all of my micro bakery friends about them. It really is a marvelous invention....[snipped]

PS. My energy bill dropped by 350 to 400 KWH per month with the coolbot installation.

Noah E. | O.H. Breadworks, New Hampshire

We purchased a CoolBot from you last spring. We could not be happier with the results. We took what had been a single car garage with a door on both ends and made our cooler area. We created an 8' X12' precooler room for putting ID tags on remains and also to house the AC unit and keep it above freezing in the winter. We are 6500 feet elevation and we get four feet of snow per year so it does get cold in Arizona. The precooler room is insulated nearly as well as the cooler so I don't think the temp will get below 32 but if it does we will ad an electric heater.

The side walls of the garage were slump block so we erected walls of 2X6 on 24" centers. Our local Home Depot carries 2" sheathed styrofoam so we put two layers in the walls and ceiling. We then foams around the edges with aerosol foam. We free floated the floor as you recommended and covered with tongue and groove plywood. We used drywall on the walls and ceiling and put vinyl flooring on the plywood floor. We used a standard 3-0 insulated door from Home Depot and glued 2" of foam on each side. The finished cooler is 11' X 14'. A commercial cooler one third that size would have cost more than twice as much as we invested in this project.

We used the largest LG AC unit and it only takes 40 minutes for it to cool from 70 degrees to 38 degrees. We could not be more pleased.

Michael | Mortuary in Arizona

To: ron at storeitcold

I want to thank you,My coolBot does what I needed it to do. I have a small produce shack that I sell goods out of to help with our SS retirement. I have built this stand and have had to buy ice to keep things cool. Now I can save $55.00 a week with your CoolBot. Hear are some pictures.

The ac unit is in the bottom left corner the air moves through the bottom and up the right wall then falls down from the top.


Kevin W.

[Note from Ron: Here is a person that is using a CoolBot in a way I doubted would work well. His implementation is so nice! I don't think it could be bigger than this AND please note that he's only set it to cool to 45 degrees... I REALLY can't believe it would cool into the 30's. Also, note this isn't a totally "open" display cooler as he is putting plastic over the opening in the front (I assume they are plastic strips, hard to tell from the picture). He seems like a gifted tinkerer/craftsman and not afraid to experiment - great combination! Now I want to do a display cooler like this for our farm!]

Hi there,

I've had the CoolBot about 2 months now and wanted to get back to you with a report. I have a 5' x 9' x 7' high walk-in cooler, and the CoolBot has made all the difference. My room has 4" foam insulation and is tightly sealed, and is cooled by a Samsung 10,500 BTU AC unit. For the first year I used my own micky mouse system, taping the Samsung's temp sensor to a "wall wart" power supply which would give off heat and force the temperature lower than the 64 degree lower limit on the AC unit. By covering the power supply with insulation I could force the unit to cool down to about 50 degrees, but any lower and it would freeze up. Still, I felt quite clever and believed I was squeezing all the cooling power possible out of the AC unit.

Then I heard about the CoolBot and immediately ordered and installed it. I have found it to work exactly as you claim. I can easily achieve 32 degrees in the cooler when the outside temps are 95+ degrees. And I love being able to set whatever temperature I want just by pushing a button, and knowing the cooler temp will stay right there. The CoolBot has made my "cool room" into an honest to goodness walk-in produce cooler.


Bill | Sunny Slope Orchard, Vacaville, CA

Hi Ron, do you remember me?

Well, finally, I am really happy to thank you once again about the CoolBot, really a great device! To built and insulate the coldroom was not an easy task... nothing is easy in Nepal! The work it was completed about 40 days ago... a really long wait!

Anyway, the best part is that, it works simply perfect, definitely over my expectation. Of course, the merit it is just yours... your device, and, not last, the suggestions wrote on your website, have made this possible.

For your knowledge, the air conditioner (12.000 btu) it is branded BEKO, this model it is with "inverter system" (lower consumption), it work perfect. So, thanks again Ron... I hope to buy two more CoolBot as soon as possible (as soon as I'll get more space!).

All the best!

Sandro | Nepal

[Note from Ron: I asked for more details, and he sent this information]

Some more details about the "cave"... has been insulated with polystyrene boards (nothing better here!) all over the surfaces, thickness 10 cm. Then covered with a thick plywood and finally covered with formica.

It is a concrete block with a flat roof and there is no shade over it.

When we started to use it, was mid of April, temperature was not really hot (average 25 C [77F]) but, it was also the time of 12 hours (6 + 6) daily power cut.

Anyway, also in that kind of situation, there was not the real need of use a generator. It was sufficient set the temperature a bit lower... in 6 hours without electricity, the inside temperature loss was 5 C... not bad, I think.

Now, situation it is back to normal with almost 24 hours of power supply... and I am really impressed about temperature stability, just set it and you got it!

Last note, the cave is used to aging of cheeses and salami.

...we're running the cool bot and an LG 11,500 btu unit on 100% solar power and it works great. We maintain the walk-in at about 44 F. I'm not sure if there are other folks using alternative energy sources to operate a walk-in cooler? Our farm is off-grid and this was a great option for us as our below grade stone root cellar warms to around 58% at this time of year.

Again, thanks.

Steven S. | Hermit Creek Farm, High Bridge, WI

We love our CoolBot cooler- photos are on our website below- go down to May of 2008. The CoolBot system let us make a cooler out of an odd shaped unused shed on our packing house for about $2000 including some structural work on the building. It also let us keep the sight line the same on a property that's already crowded. It's about 6*8*6 interior dimensions and cools great with a 15000 BTU unit. It's really raised our productivity and produce quality. Instructions were great as well as the advice on how to build/insulate the cooler.

Couple of comments- A helpful addition to the website would be that most AC units go from 110 at 15000 BTU to 220 at 18000 BTU. For an older building like ours it was much easier to go down.

Also another problem we've had with our Samsung AC unit is that it won't reset itself if the power "flickers." No problem with the CoolBot, but the AC doesn't come back on with the power. Is this true on the LG's also? Not a problem now that we realized that it happens and added a wireless thermometer by the kitchen window so we can monitor the temps in the cooler.

[Note from Ron- LG Brand Air Conditioners (from Home Depot) do NOT need to be reset when there is a power failure. This is the one significant advantage of LG over Samsung]

I didn't think the frost control was needed until someone knocked the frost wire out and didn't replace it. AC was a sheet of frost but a couple of minutes of fan only cleaned it right up.

For the floor we used 4*6 rubber stall mats (from tractor supply in our area) on top of the two layers of blue board. It's made a nice walking surface and adds another inch of insulation.

Thanks so much

Jim | Rocky Glade Farm

Emailed picture of Hector @ Conuco Farms in his home-built 8x10 cooler for fresh vegetables for CSA and market sales to NYC Greenmarkets.

Whom It May Concern:

Just wanted to drop you a line. I installed the CoolBot unit in my homemade Walk-in cooler. I purchased all the supplies to make an 8 by 8 from Home Depot. I purchased the air conditioner unit from Circuit City. Totally I have approx 15 hours in design and installation. The total price was under $1400.00 which is a huge difference from $5k I was quoted for the same size cooler. It has worked flawlessly since the time I turned it on. If you ever have anyone skeptical of your product, feel free to forward this email to them. It only took minutes to install and I'm 100% satisfied!

Everyone that sees it is highly impressed. My sole purpose is to use the cooler to hang deer in. I'm in charge of a D-map program (the county allows me to harvest as many deer as possible in the month of Sept, deer are destroying local farmers crop). This Sept in Northern VA the weather averaged in the 80 degree range. Without the cooler I was out of luck.

Also, bow season starts this Saturday and the temp is suppose to be over 80, my family and friends wouldn't be able to hunt without a place to hang the deer. We are very responsible hunters, we eat deer meat twice a week and give the rest to needy families!

Thanks to the CoolBot, I have no worries! Great Product! Please give my comments to the developer! Awesome!

Samuel R. | Marshall, VA

This thing is AMAZING! I'm just using an 8000 btu Samsung a/c I got for $200 from Lowe's and my room is staying steady at 42 degrees!

Tim | Farmer in North Carolina

Dear Sirs,

I purchased a CoolBot from you about 6 mos ago. [snipped] Our cooler is approximately 10 x 10 and built similar to what you proposed. I calculated a R factor well over 20. We use a 12000 btu unit from Home Depot and it works like a charm with the CoolBot. We store our large sizes of beer and all of our backstock in it.

[snipped]Our local taxidermist wants to build one

Robert W.

Dear Ron ...The new Kenmore got the temp down to 40 degrees from 70 in just a short time... Thank you!

Rick | flower shop owner in West Virginia

[Note from Ron: They had originally tried the CoolBot on a Whirlpool A/C unit with a metal temperature sensor and it did not work. We offered to take the unit back but they wanted to try again with an approved a/c unit. Also, note that the CoolBot will go lower than 40 degrees, it's thermostatically controlled and they set it at 40 degrees.]


This past fall I ordered your devise to control an A/C for a walk-in cooler I had bought to hang deer in that would be harvested in the PA Archery season. Our season has had rather warm weather which required us to quarter and place our deer in refrigerators. As you can expect not many deer fit in a refrigerator. Anyhow I just wanted to thank you and let you know that I have been very satisfied with your invention. My father was a farmer so I have roots in the farming life; I would also like to thank you for being a farmer. I have forwarded your email on to a friend that wants to purchase your devise, and I will continue to spread the word on your invention. All my friends are hunters and all have been impressed with how good the results have been. Many were very skeptical when they brought deer over, because of the temperatures they were afraid of a malfunction and loosing the meat. All are advocates of your devise and I am sure they will be spreading the word and maybe purchasing. I hope that this helps in marketing for you and lets you acknowledge that there is another market for your devise with the hunting world.


We just installed the CoolBot in our newly built walk-in cooler. We are a mushroom farm that specializes in gourmet and wild mushrooms and we love the CoolBot! It saved us a lot of money compared to installing a drop-in refrigeration unit and it is simple to use. It works great, highly recommended.


Jennifer O. | Lebanon, OR


First of all I am very pleased with cool-bot I got just in time for the warm spell 2 weeks ago and it did great!( I built a 8X8X8 walk in cooler with floor and ceiling 3 1/2 inches styrofoam)If you have any one in my area thinking about one you can use me as a reference. I do have a question and it may seem silly but now that the temp is low and below freezing at night should I remove the cool-bot and move to a warmer location? I know it is made for refrigeration but I am not sure if freezing is a factor?

PS: my area would be north central Pennsylvania 50 miles south of Hazelton, 50 miles north of Harrisburg and about 50 miles west of Williamsport.

Dante Picarelli |

Just want you to know,that CoolBot is real good.. i finished my 6 by 6 cooler and even with this heat the last few days,it has been at 40, have had it as low as 32.

thanks again.

Mark S. | Plainfield, CT

Hi Ron,

We have the coolbot up and running. I hate to sound melodramatic, but it is life changing! No more juggling space in the refrigerators, combining this and that. We have the temperature set for 42F (mostly squash and beans) and it has maintained a very constant 42-44 for four days. We inadvertently turned off the power for 7 hours. The temperature went up to 68 before we discovered it. It was back to 43 in 30 minutes!! That really surprised me- thought it would take hours. We are thoroughly enjoying our new cool room (especially on 96 degree days!). Is there anything else you need to know? Great article in Growing for Market. We both want to reread it and then might have 1 or 2 questions. Are you going to do any more post harvest articles for them? I think it should be a series. That is one area that is very lacking in information. When we go to Organic Growers Schools, etc., very rarely is that a subject.


Margaret |

We really love hearing from you the details of the cooler you made, the size a/c you are using and what temperature you've set the CoolBot to run at as well as what the application is (farm, florist, restaurant, caterer, industrial, mortuary - we even have people storing vaccines with the CoolBot!)