Dual fuel systems, with their combination of an all-electric heat pump and gas furnace, give homeowners the best of both worlds: comfort and energy savings, topped off with a healthy dose of saving ...

Researchers in Spain have developed a dual-condenser air-to-water heat pump that shifts domestic hot water production to daylight hours, maximizing PV self-consumption. The prototype boosted solar ...

Researchers in Italy have conceived a dual-source heat pump system that uses both a finned-coil evaporator and a solar evaporator made with three photovoltaic-thermal panels. Thanks to the combined ...

Heat pumps are hot. And when the need arises, they’re pretty cold, too. These high-efficiency electric fixtures heat and cool using your home’s existing ductwork. That means they can replace a ...