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.

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Tired of using loud and unsightly window air conditioners? Even if you don’t have the ...

This profile has not been claimed by the company. See reviews below to learn more or submit your own review. Carrier Heating & Cooling manufactures air conditioners, furnaces, heat pumps, thermostats ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Thom Dunn Thom Dunn is a writer focusing on home heating and cooling. He once ...