Researchers at the University of Padua in Italy have designed a dual-source heat pump that uses CO2 as the refrigerant and a solar evaporator comprising three PV-T collectors “The key innovation lies ...

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 ...

Discover the key differences between heat pumps and furnaces, including energy efficiency, cost, and climate suitability.