Almost all homes built in the U.S. have air conditioning of some type. In many cases, it’s part of a heat pump system that ...

We tested nine of the best portable air conditioners in a humid Florida home—here are the models that impressed us the most.

R-454B, with a global warming potential of 466, has been adopted by major HVAC manufacturers as the standard replacement for ...

We're in the process of testing some additional portable air conditioners from Frigidaire and Black+Decker for an update this ...

New manufacturing techniques could improve heat exchangers in everything from air conditioners to massive ... up the temperature of the planet in the process. “Cooling degree days” are one ...

Inverters are more energy-efficient: An air conditioner uses a lot of juice when the compressor kicks on and a conventional unit continues its power-hungry ways throughout the cooling process.