Originally Posted by jdog101
I have seen a few people mention using 240v infinite switches as a very basic option. That would keep out the expense if pid's and all of that. Is there any reason 1 240 volt infinite switch for each element in a outlet box would not work?
An infinite switch (PWM) works very well for the boil where you can adjust by eye to get the boil vigor you seek.
A PID is a better solution for mashing because it will keep mash temp for you, specifically if you are recirculating. Once you have the PID, assuming it has a manual mode, in manual mode it functions essentially as a digital PWM.
You can certainly use a PWM to mash, measuring the temp yourself and turning power off and on as necessary. That would work best with an insulated mash tun where you can hit mash temp and cut power, maybe giving a boost or two during the mash if needed.