Best Window Air Conditioners of 2026, Tested in Our Heat-Simulation Lab
When a scorching heat wave hits, an ice bath sounds like pure bliss. But if you’re someone who prefers a mild summer, I might have some bad news for you. Heat waves are becoming more common.
According to a July 2024 report by the United States Environmental Protection Agency, the heat-wave season in major US cities is now 46 days longer than it was in the 1960s.
That increase is why it’s not only important to ensure you have a working air conditioner at home, but also an energy-efficient one. Over the years, and most recently in the spring of 2026, CNET has conducted hands-on testing in our state-of-the-art laboratory with dozens of window air conditioners to find models that can cool quickly and efficiently.
Here are the best window air conditioners of 2026 to help keep your home cool all summer long.
Pros
- Quiet operation starting at...
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