All right, I am in the process of hunting deals on parts and I have a question about the storage tank. Would a tank like this work for the storage tank?
Link
They are made of Linear Low Density Polyethylene (LLDPE) and are suitable for potable water. My concern is the high temperature. I have sent the company an email but haven't heard back yet.
I like this tank because I found a used 275 gallon tank for $100. They are already plumbed for the inlet and outlet, and have a threaded lid to allow fitting the heat exchanger inside.
What do you guys think?