Best Portable Air Conditioners of 2023

They don't cool as well as window ACs but can help keep you comfortable

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It's not often that we compile a "best of" list from a product category that, overall, delivers mediocre performance in Consumer Reports’ tests. But that's the case with portable air conditioners, which—even in optimal conditions—are an imperfect way to cool a room.

Still, they might be your only choice if, say, your house lacks central air conditioning or you live in a building that either prohibits window ACs or has window configurations that make them difficult to install.

"You may have sliding windows, which are common in the West, or just need spot-cooling in a home office, or you don't want to block off an entire window," says Thomas Kelly, senior marketing director at GE Appliances.

And despite their drawbacks, portable air conditioners account for almost 20 percent of the room air conditioner market, according to the Association of Home Appliance Manufacturers.

The upside of a portable air conditioner—that it isn't bolted to a window—is also its downside.

Unlike a window AC, which uses outside air to cool the coils on the outdoor part of the unit, a single-hose portable AC uses conditioned air from the room it's sitting in to cool the mechanicals. That creates negative pressure that causes warm, unconditioned air from nearby rooms or the outdoors to flow into the room you’re trying to keep cool. It's a struggle, then, to maintain a comfortable temperature.

"You may not be getting what you think when you buy a portable model," says Chris Regan, who oversees CR's air conditioner tests. "It's difficult to compare the cooling to a window AC."

In our air conditioner tests, we measure how long it takes a portable model to lower the temperature of a test chamber from 90° F to 85° F. That takes an average of 20 minutes. By comparison, the best window air conditioners can cool the room by 10° F in about 15 minutes or less.

But the news about portable ACs isn't all bad. According to CR's brand reliability survey, two brands—Frigidaire and Honeywell—earn a top rating of excellent for predicted reliability, and two other brands receive a score of very good. Owner satisfaction, which is based on the proportion of our members who are extremely likely to recommend their AC, isn't quite as high, with most brands earning a middling rating.

We test portable ACs from brands including Emerson, Friedrich, Frigidaire, Honeywell, LG, Midea, Whirlpool, and Whynter. CR members can read on for ratings and reviews of models that rise to the top in our tests. And if you’re looking for additional information on ACs, check out our air conditioner buying guide.

Mary H.J. Farrell

Mary H.J. Farrell is a senior editor at Consumer Reports whose real passion is for cooking and all that entails. She has expanded CR's cookware category to include not only more pots and pans but also other essentials like stand mixer attachments, sheet pans, and vacuum sealers. Mary also covers vacuums but finds cooking way more fun than cleaning. Since the mid-1990s, Mary has held senior positions at People.com, MSNBC, and Ladies’ Home Journal. One of her earliest jobs was at Good Housekeeping.