This is read by an automated voice. Please report any issues or inconsistencies here. NEW YORK — When a heat wave hits, millions of air conditioners switch on at once, straining the electric grid and ...

With heat advisories blanketing the eastern half of the U.S., air conditioners are once again working over time as essential resources to keep millions cool. But they're unevenly distributed: Many ...

Unlike window air conditioners, portable air conditioners roll easily from room to room and take only minutes to set up—no ...

New technologies store cooling power for when it’s needed most. As temperatures climb on hot days, many of us are quick to crank up our fans or air conditioners. These cooling systems can be a major ...

The Chinese bus company couldn’t work it out. Some days when its buses merely crawled along Shanghai’s streets, their power consumption would go through the roof. The reason why was a mystery. So, a ...

Forget data centers—cooling is the real beast in energy demand. Things are starting to warm up here in the New York City area, and it’s got me thinking once again about something that people aren’t ...

Over-the-sill air conditioners feature a unique design, but are they worth the cool cash? Use this guide to learn what we found out through hands-on testing.