But if everyone turns on their air conditioner at the same time, electricity demand spikes, which can force power grid operators to activate some of the most expensive, and dirtiest, power plants.

Air conditioners place a heavy burden on the grid when the weather gets hot, but this strategy shows they can actually help—and without compromising your home's temperature.

Every few seconds, our system slightly changed the timing of air-conditioning compressor switching for some of the 100 air conditioners, causing the units’ aggregate power consumption to change.

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Another passenger, Laura Evans, said that the emergency lights came on, but the temperature began to rise. “Being stuck in that tunnel, it got hot really fast,” Evans said.

We tested nine units in a humid Florida home to find the best portable air conditioners of 2025. Here are the models we recommend considering for any size space.

Electricity use on the biggest US grid, which serves nearly a fifth of Americans from Washington DC to Illinois, is expected to climb to a 12-year high as intense heat spurs air conditioning needs.

If the summer heat is starting to take its toll, why not grab yourself a portable air conditioner? It's a fantastic solution ...

The Congressional Budget Office estimates an increase of 10.9 million people without health insurance under President Donald Trump’s big bill, including 1.4 million who are in the country ...

It's Wednesday, Sept. 3, 2024: the first day of a three-day heatwave in Portland, Oregon, with temperatures predicted to be the hottest since 1958. Inside my outdated single-family home, the ...

Could this common home machinery help usher in more renewable energy? Holden Henry/iStock / Getty Images Plus Johanna Mathieu ...