The highly efficient devices are the darlings of the environmental movement. Here’s why. By Hilary Howard Heat pumps, which both warm and cool buildings and are powered by electricity, have been ...

What's the difference between warm air and cool air? In fact, what does “temperature” even mean? It's stranger than you think. At a basic level, if you increase the temperature of air, you increase ...

Getting a heat pump may be seen as a huge task requiring new insulation and radiators, but not all homes will need such ...

Heat pumps are being sold to consumers as a way of cutting carbon emissions from homes - but are they suitable for older or larger homes? A heat pump is an electric-powered system that uses heat from ...

Federal incentives for home energy improvements are running out at the end of the year, so it’s decision time for anyone who has been thinking about a heat pump. The right decision can depend on where ...

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 ...