When you’ve got it all, things can get pretty complicated. Solar pool heat plumbing with a heat pump and a spa can result in a spaghetti factory of plumbing at your pool equipment. Pictured below is an Estero, FL system containing:
- Solar Pool Heat
- Auxiliary Electric Heat Pump
- Pool and Spa with Blower Combination
- Cartridge Filter
- Pool Drain Valve
- Aqualink automatic controller
- Landscape lighting

The good news is that the automatic controller does just about everything you can expect to control the pool and spa heating automatically. The only user intervention required is to set desired temperatures and priorities for heating sources. The owner may also want to manually adjust the spill-over waterfall from the spa to the pool.
Note: My employer at the time added the solar pool heat to the existing system installed by others and connected the solar pool heat to the Aqualink controller.