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 ...

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 ...

With global warming becoming an urgent issue, heating our homes efficiently -- and sustainably -- has taken center stage. As winters become more unpredictable (and unexpectedly harsh), finding ...

Despite a dip in sales last year, heat pumps are continuing to take Europe by storm. These devices take energy from the air, ground or water and transform it into heat or cool air. But how, when and ...

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 ...

British Columbia, Canada’s westernmost province, is making its rebate scheme for heat pump installations available to apartment renters and condo owners. The Better Homes Energy Savings Program Condo ...