Amazon put the Yamokizy Portable Air Conditioner on sale, and more than 1,000 shoppers bought it in the past month. The ...

The EER or Energy Efficiency Ratio measures the cooling efficiency of an air conditioner or HVAC system, determined by ...

Here's how to tell whether to go with a window a/c, portable unit, a ductless mini-spit, an evaporative cooler—or a combo of several.