walk in freezer/cooler

4 year old thread, but I have experience with the Cool Bot.

In a word. IT WORKS!!!!

It is more than trickery, it manages the AC unit so you can get down to 38 degrees. With an AC unit the back will Ice Up. Cool bot manages this so it wont ice up and still get you those cold temps...

Vary simple tool to use. Just insulate the room properly and get at MINIM a 10K BTU unit. I use a 12K BTU unit and it is perfect and CHEAPER...

Works great with a Solar Power Rig with Batteries

I know a guy locally that got one at a good price from a used equipment dealer in Ohio. Used is probably where its at. Some things to check would be the age for one, because if it is some old unit that needs an obsolete refrigerant it is going to be hard to get serviced. How it was stored can be important.

I would say ready access to service and spare parts is critical. Because if it's the middle of summer and the thing breaks down, it could mean a lot of wasted food if you can't get it back online quickly. Ditto for extended power outages.

The coolbot can work for a cooler yes, if you get a big enough AC unit. It usually needs to be quite a bit more btu capacity than you would have to cool that size space. Right the limitation is the evaporator, which will tend to ice up. The coolbot controls the cycling on and off of the A/C compressor by manipulating the temperature the A/C unit's thermostat sees. When the evaporator starts to ice up it has to let the A/C unit think it is cold enough so that it cuts off the compressor. It has no choice. If the evaporator ices up it can't cool the room anymore. Commercial refrigeration systems usually use a larger evaporator for this reason, so that it can reject more heat from the space being cooled at lower temperatures.