Mini split air conditioners are heating and cooling systems that allow users to control temperatures on a room-by-room basis.

A complete home heating and cooling system built by hand this MR Cool installation shows how one builder adds comfort and ...

In TODAY.com's Expert Tip of the Day, a trainer reveals the pros and cons of full-body strength workouts and how results ...

Hybrid cars use complex powertrain systems to achieve higher driving range than gas vehicle equivalents. Here's how those ...

Your car's splitter works like an upside-down wing, using air pressure and vacuum to keep your vehicle glued to the road.