So I have a full Jandy automation setup. My Jandy Lite 2 (400,000 BTU) heater is at end of life, full of rust and now it isn't working. I want to replace it with something that is a built better and will not rust and also stay around the 400,000BTU range. I also want to retain the automation aspects of the current setup. Can I use any brand heater? What is the best rated heater these days? Any recommendations are welcomed.