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.

A heat pump doesn't generate heat; it transfers it from one place to another. It's an appliance with a bright future in an ...

If you’re one of the 100 percent of humans who lives somewhere warmer than –460 Fahrenheit, we’ve got good news: You probably qualify for a heat pump. Instead of generating heat, this ...