Hello TFP, this is my first post. We're building a 14x30 pool with integrated/spillover spa in Burbank (Los Angeles) CA. One of our top priorities is keeping the pool comfortable year round (85-90 F?) as efficiently as possible. Ideally we would keep the pool at or close to temp all the time and heat up the spa on an as needed basis. The pool will get full sun most of the day, and of course we'll use a solar cover when not in use. The PB has specified a JandyJXi400 as our main heater. I am thinking we should supplement this with at least one other heater, either heat pump or solar. The roof we would put the solar on has a straight southern exposure. The heat pump seems like it would be a good choice here as we tend to be above 50 in the daytime throughout the year. Would doing all 3 types of heat be crazy? I don't mind spending more now to avoid huge gas bills in the future. Thanks for any insight you may have.