Our editors believe that the best bed cooling systems are the most efficient way to stave off night sweats. Here are our top picks, according to our sleep experts.

Many of us have a deep appreciation for the cooling systems in our homes, whether we realize it or not. What do we really know about the cooling side of our HVAC systems? Do we need to know more?

This simple formula can help you decide whether it's smarter to repair or replace your HVAC system.

How hot does your engine run? Is it on the cool side? The hot side? Where should it be? How big of a radiator should you run? Antifreeze or water? Tap or distilled? Do you need a pressurized cooling ...

In Yuncheng, Shanxi Province, China, a neighbourhood is combating extreme heat with an innovative rooftop misting system.