We've been trying to figure out a way to heat our FVs for Belgians and to keep diacetyl rests up in the winter and our current solution is expensive. To put two solenoids on supply and two return with two different glycol reservoirs equilibrated to each other. Our ASCO 12v red hats are $220 each plus all the lines and extra glycol is a spicy meatball.
Has anyone ever heard of just snaking in a tiatnium heater on a controller wired back to their BCS system, and possibly just recirculating the fluid in the jacket. See below product.
Thorn Street Brewery
North Park, San Diego, CA