If defrost isn’t working, something in the chain is broken. This step-by-step approach shows you exactly where to look and what to test.

Bob is a service technician who is well trained and nationally certified. However, he has sometimes suffered from the same confusion that all technicians occasionally do — the facts that he gathers ...

"You won't regret your decision." Homeowner opens up about experience with a heat pump HVAC after temperatures dropped below ...

Heat pumps electrify your heating and cooling to be more efficient. New technology could solve one of their lingering problems. Jon covers artificial intelligence. He previously led CNET's home energy ...

Heat pumps have become a kind of Rorschach test for the future of home comfort: to some people they are a climate solution, ...

Humble heat pumps are having their moment. Last year, Americans installed 4 million of the ultra-low-carbon heating and cooling appliances — beating out gas furnaces for the first time. In Europe, ...

Heating and cooling might sound basic, but after solar, it’s the next frontier in residential decarbonization. Part of the problem is that installing heating, ventilation, and air-conditioning (HVAC) ...