Gradient's advanced window unit can heat and cool 500 square feet of your home. And you won't need an electrician.

Samsung is preparing to bring an air-to-water heat pump to the faucets and radiators of North America this year.

(Some so-called ductless air conditioners are actually heat pumps.) They tend to cost a little more than AC-only units but less than the combined cost of a new heating and cooling system.

Air conditioning and refrigeration consume about 20% of global electricity, relying on century-old vapor-compression ...

One key difference between this and an air-source heat pump is that this one can only heat. You'll need a separate air conditioner unit for cooling. A new spin on the hot water tank This heat pump ...

There’s been steady growth in the popularity of heat pumps overall, but their attractiveness varies across different market ...

"I installed a heat pump two years ago and really dread the wintertime electric bills," writes one reader. Another: "Let’s ...