Air conditioning can feel like magic on a hot day. An HVAC instructor at Northern Virginia Community College explains how it works.

How air conditioners actually work, explained by an expert - Air conditioners don’t actually produce cold air ...

Summer is here and temperatures are rising across the Northern Hemisphere, where nearly 90 percent of the world’s people live. The heat is pushing people to rely on air conditioners to stay ...

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 ...