CoolBot Cooler Controller

CoolBot Cooler Controller

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A CoolBot allows a standard air conditioner to cool a room or space down to 35 degrees F.  Installs with no tools or electrical knowledge required.  

Standard A/C units available from any hardware or appliance store have lots of power but they are electronically limited so that they cannot go below 60 degrees F.  This is because they would freeze up. Commercial refrigeration for walk in coolers combat freeze with increased surface area on the fins as well as fans. Instead the Cool bot technology uses multiple sensors, a heating element and programmed micro-controller to control your air conditioner in such a way that the unit can go below 60F and not freeze up.  The Coolbot cannot give you 100% of the btus listed on your air conditioner nor is suitable for large brewery or winery walk ins. It is perfect for wine cellars, beer storage, fermentation, etc. 

Easy to install within 30 minutes with no tools or electrical knowleged required. While we can't tell you exactly what size space you can cool because of ambient temperatures and insulation factors, we recommend you google Coolbot. They have sold over 50,000 of these so there are lots of reviews and actual installs out there. We offer free shipping on this unit, ship fast from both coasts, and have great customer service.  

This type of system is also very efficient. Most commercial systems are power hogs with large fans that are always running.  Residential A/C units are made for efficiency. The Coolbot will also shut down the compressor for short time when the unit is running at its highest level of inneficiency, as it nears freeze up.  

Dims of the CoolBot are 6.5x3.5x1.5 in. 


Product Introduction


DIY Indoor Cooler


Mobile Walk In Cooler


For the WiFi-enabled model, see the CoolBot Pro.

California Recipients: See Proposition 65 Information
Item # FE635
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - Out Of Stock
Weight 1LBS
Community Q&A

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Why did you choose this?
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Meat processing
Seth L on Sep 23, 2019
Simple to use & I know people who use it
Casey L S on Sep 6, 2019
Meat processing
Seth L on Sep 23, 2019
Make a cooler
Kia x on Sep 11, 2019
Simple to use & I know people who use it
Casey L S on Sep 6, 2019
Built a walk in cooler and need this for the air conditioner to keep it cold
Kenneth H on Aug 28, 2019
making a cooler
lawrence e on Aug 28, 2019
Cut Bank Creek Brewery on Aug 28, 2019
Walk in cooler
Grady K on Aug 28, 2019
Best price and free delivery
JAMES F F on Aug 28, 2019
Building a walk in and a friend told me about this item
Stacey h on Jul 24, 2019
I think this website is the best. Thank you
Christian f on Jul 17, 2019
Wine cold room
R. M on Jul 16, 2019
To use in coolroom where my daughter's 4-h steer is
Teresa N on Jul 8, 2019
Reviews read
GREG C G on Nov 21, 2018
To regulate a walk-in cooler for fermentation and beer storage.
Jeff W on Nov 17, 2018
Walk in meat cooler extra room
Matthew J on Oct 30, 2018
I have an agricultural business
Susan V on Sep 10, 2018
already have one and need an additional
Montee S on Sep 6, 2018
Best price with free shipping.
Jerry H on Jul 31, 2018
building cooling room for vegetables
Fred M on Jun 26, 2018
Building a walk-in cooler for a hiking club. Looked like a proven winner so took the plunge.
George A on May 30, 2018
have 2 already and I am making a 3rd cooler
patrick r on May 25, 2018
Ive heard great things about it.
Fernando A on May 7, 2018
Try it out
Mark B on May 4, 2018
Cheese cave
Robert D on Mar 6, 2018
seems legit
Jeff on Feb 27, 2018
cost to fix a 25 year old cooler affordably
Valued C on Feb 19, 2018
Walk-in Keg Room
Gloria M on Feb 12, 2018
Make a cooler
Kia x on Sep 11, 2019
Built a walk in cooler and need this for the air conditioner to keep it cold
Kenneth H on Aug 28, 2019

5.0 / 5.0
12 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Works for us just as advertised. This was our 2nd coolbot very happy with product.
September 15, 2019
3 weeks ago
Love it .. built walk-in cooler , purchased recommend ac unit and plugged in.... running at 48 degrees with flux of 2 degrees either side of that .. to me and for my purpose, totally within limits !!! Thank you and thank my friend for telling me about this rig (Coolbot). If it explodes or something else horrible I’ll be back to report , But with the hundreds n hundreds of positive reviews, I’m guessing I’m all good
It works !!! And very well at that!!
It works !!! And very well at that!!
August 7, 2019
2 months ago
Works Great
I built a 4.5 x 4.5 x 7.5 cooler for meat cooling/aging. I attached the Coolbot to an 8,000 BTU Window Air conditioning Unit. To test it out, it was a hot 90 degree day & the room was around 96 degrees when I turned the unit on. Within 3 hours I had it down to my target temp of 38 degrees. These things work great. Basically, "Plug & Play."
July 27, 2019
2 months ago
Highly recommend it.
Easy to set up it works awesome
Very happy with it.
July 8, 2019
3 months ago
It's cool little bot
My CoolBot walk-in has been running for about a month now. The CoolBot unit is easy to install and setup. The A/C compressor kicks on about once an hour for a couple minutes to maintain temperature. The setpoint is 34 degrees.
April 20, 2019
6 months ago
Great technology
Works great for my new walk in cooler
August 5, 2018
1 year ago
Works great! Walk in is cold again!
July 15, 2018
1 year ago
Works like a champ - wine cellar at 50 degrees.
This works really well with an inexpensive Kenmore window mount air conditioner that I use in a custom through-the-wall configuration in a shed/wine cellar on our property. The wine cellar is well insulated, and about 150 sq ft. Previously the temperature would never drop below 62 or so with the 60-degree setting on the AC unit. With the Coolbot, it goes right to the setting of 50 degrees and stays there. Highly recommended.
June 10, 2018
1 year ago
This device was the answer to my prayers! When I bought it, I thought it would be a waste of money, but I was desperate.
Turns out it works great
February 8, 2018
1 year ago
Great product for a walk-in cooler
February 4, 2018
1 year ago