A heat pump functions as a typical air conditioning system in the cooling mode — absorbing heat from indoors and rejecting it outdoors. In heating mode, the coils reverse their functions. The outdoor ...

A common refrain is that they’re only effective in mild climates. We put that idea to the test. Credit...Photo illustration by The New York Times; Shutterstock Supported by By Sofia Quaglia Heat pumps ...

While heat pump problems are far outweighed by their many benefits, it is well worth getting to know where homeowners often run into issues with both air source heat pumps as well as ground source ...

Installation training remains a challenge — alongside pushback from the fossil fuel industry and old worries about ...