The SunQuest above-ground solar pool heater comes with two 12-foot-long by 2-foot-wide panels, capable of heating water in a small above-ground pool.

The system uses photovoltaic-thermal (PVT) collectors as the solar source, a U-tube borehole heat exchanger (BHE) for the ground source, and a finned coil heat exchanger (FCHE) for the air source.

Italian researchers have reviewed different system configurations for photovoltaic-thermal solar-assisted heat pumps in buildings. They say that using the PV-thermal collector as the heat pump’s ...