So I was thinking of picking up a cheap fridge off craigslist and getting a ferment chamber going.
My question is: I get the Johnson Controller, but doesn't that only control one device?
Say I have a belgian going that needs to be fermented at 75, so the fridge would cool (the johnson controller would turn it on and off to keep it if it needed to be colder) but how does it work to Warm AND Cool at the same time to keep it at the right temperature?
Does that make sense what I'm asking? Thanks for the help.