For our new pool (18ft x 50ft) in the San Francisco Bay area, would you recommend getting both UltraTemp (for the pool) and MasterTemp (for the spa mostly) together instead of doing a MasterTemp only?
Sure, if you ignore capital costs to get there.We have solar PV but it is not enough to heat the pool and there is no space to add more panels.
I was wondering about the combination of a gas heater (to heat the spa mostly) and an electric heat pump (for the pool) as a more energy efficient option and reduce operating costs.