Originally Posted by Hava-brew
Yeah unfortunately I'm not very electrical minded but that could be an option too. The main thing is the amount of power the old one uses is prob 3 times the amount of any newer one would. The way he set it up is kind of different and I wanted to change it up anyways. That is definitely something to look into tho. Thanks. pics tomorrow
So use the relay in the PID controller to drive a 30-amp relay down-line.
But i agree that having someone around with electrical knowledge would be preferable.
What I'm saying, essentially, is that the thermostat is a relatively crude mechanism for turning the compressor on and off. And for less than $100 you can have a technologically advanced mechanism for turning the compressor on and off.
One that lets you select an exact temperature, and which will anticipate and attempt to prevent both undershoot and overshoot of that temperature.