You probably don’t spend much time thinking about the compressor in your air conditioner, at least as long as it’s pumping out cool air. But if you’re in the market for a new window AC this season, ...

The modern air conditioning system cools an indoor space by using the refrigeration cycle. This refrigeration cycle works by controlling the level of energy in the system’s refrigerant: Some parts of ...

It’s 90 degrees outside. You get in your car and turn the air conditioner on, and only warm air blows out of the vents. You've got issues, but don't fret. There are a few basic things to check first.

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Portable air conditioners are small, wheeled machines that take air that’s hot, stale ...

We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › A: It’s the ...

Have you noticed a spike in your electric bill? It could be your AC. Check out these tips for lowering your energy use while still keeping your home cool. Alexandra Jones is a CNET contributor who ...