Heat pumps have annually outsold gas furnaces for several years now, and with the recent introduction of more high-efficiency, cold-climate, air-source heat pumps, that trend is likely to continue.

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Eric Mauchan’s Cape Cod-style house in Framingham, Massachusetts, does not have central air conditioning. So when the summer heat bears down, his four window AC units, two dehumidifiers and fans that ...

Air source heat pumps are made up of an outside unit and an inside unit. They can also be hooked up to ducts, like a furnace. Mitsubishi Electric Trane HVAC US (METUS) By Francesca Paris Heat pumps ...