If you want fresh, cool air without the stress of a window AC installation, a portable air conditioner can be a great solution.
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Think of these appliances as AC units on wheels, able to cool a single room without as permanent of an installation in your home and windowsill — a key feature if you live in an apartment or four-season climate.
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To help find the best portable air conditioners, I spoke with cooling and appliance experts, and got their advice about everything you need to know.
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Plus, I’ve included a list of the best units you can buy for rooms of all sizes.
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The best portable air conditioners of 2026
My top picks come from large brands like Black+Decker, Midea and Whynter.
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Inside each “What to know” menu, you’ll find important specifications you should know.
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This Whynter model is the most powerful and most advanced air conditioner on our list — it’s a good option if you need to cool a large room quickly and efficiently.
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It’s a dual-hose unit: one hose pulls fresh air into your home, the other pushes hot air outside.
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Dual-hose units are generally more powerful and efficient, but can be louder and more complicated to install.
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It is also an inverter unit, which means it’s more energy efficient because it can automatically fine-tune how slow or fast it needs to run depending on the temperature inside.
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The low price does mean some compromises on features.
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There is no smart connectivity and the remote does not have a temperature readout like most of our other picks.
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While this AC is powerful for the price, light sleepers may want to avoid it — some reviewers on Amazon say it is loud, even on low fan settings.
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Best AC for small rooms
This Black+Decker portable air conditioner for small rooms cools spaces up to 350 square feet — think bedrooms and offices.
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While there are a few size options available, this 8,500 BTU version is one of the most compact and lowest priced.
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Like all of our picks, you can adjust the settings on the unit itself or via the remote: both include a timer, sleep and auto modes.
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You can control the unit through the touchpad, remote control or Dreo Home mobile app, where you can set target humidity for its auto mode and create automatic schedules.
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Not to mention it cools larger spaces better than most other units on the list.
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How I picked the best portable air conditioners
I spoke with experts to better understand what features and specifications to look for in a quality portable air conditioner.
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Following their guidance, I selected top-rated units that met the following criteria:
- BTUs (British Thermal Units): An air conditioner’s cooling ability is typically measured in BTUs — the higher the number, the more powerful the AC.
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Per expert guidance, I selected portable ACs with a range of BTUs and recommended room size, so you can pick the most appropriate option for your space (more on BTUs below).
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- Portability: Portable air conditioners can still weigh more than 50 pounds.
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I only selected units with built-in wheels that make them easier to move from room to room.
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I selected portable AC units with at least a four-star average rating from customers on Amazon.
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How to shop for a portable air conditioner
Portable air conditioners are generally pricier than window ACs.
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However, they’re much easier to install and are typically more compact, so you can move the unit from room to room without much effort, says Dr. John McKeon, CEO of Allergy Standards — an organization that works with brands and manufacturers to improve indoor air quality science and standards.
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If a portable AC sounds right for your needs, keep the following in mind as you shop:
Placement and maintenance
A portable air conditioner has to be close to a window and an electrical outlet to work.
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They also require some maintenance, including draining the water from the unit as needed and cleaning the air filters every couple of weeks.
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This will help avoid mold growth in your unit since that can decrease your room’s air quality, according to McKeon.
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Some portable air conditioners can connect to your Wi-Fi and be controlled via a smartphone app, though these models will typically cost more, says McKeon.
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Decide if this is a worthwhile feature for you before adding a smart connected model to your cart.
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Portable air conditioners either come with one or two hoses (though there are portable air conditioners without hoses) that vent through your window to the outside.
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Single hose models are more common: they pull and cool the air inside your room, pushing hot air outside through the hose.
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Dual-hose units have one hose that pulls and cools fresh air into your home and another that pushes hot air out.
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Dual-hose units are typically louder and more expensive than single hose units, says Carl Prouty, the technologist at Abt, a national electronics and appliances retailer based in Glenview, Illinois.
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You’ll also have to empty the water in dual hose units more often, as pulling in outdoor air produces more condensation.
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How many BTUs do I need?
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An air conditioner’s cooling ability is typically measured in British thermal units, or BTUs.
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On average, an air-conditioning unit needs about 20 BTUs per square foot of space to keep things cool, says McKeon.
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To figure out how many BTUs you need for your room size, multiply the square footage of your room by 20.
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…and 18 more, not listed.
