Cooling capacity (BTU) and room size
The BTU rating and room size go hand in hand when determining which portable AC unit you need. An undersized unit may run continuously, never efficiently cooling a room. The square footage of the room you want to cool will determine what BTU rating you will need. An online BTU calculator can help you make the determination.
Energy efficiency
Some modern portable AC units feature advanced technology that automatically adjusts cooling output to conserve energy, resulting in lower electricity use. Although portable units aren’t as efficient as window units due to the way they operate, the Dreo AC516S stands out as the most efficient option for home use. However, it should be noted that portable units are not typically Energy Star certified like window units.
Window compatibility
Unlike window AC units, portable ACs can work with a wider variety of window styles and sizes. They are a good choice if you have narrow windows, slider windows or a window where a traditional window unit won’t fit. Portable units also don’t take up as much window space. However, they still require a window for the hose. If your window can accommodate a window AC, though, a window unit will typically provide stronger and more efficient cooling.
Electrical requirements
You’ll want to install the unit near a wall outlet. Although AC units don’t have a heating element, it is still not recommended to use extension cords with them. All our recommended AC units operate on a standard wall outlet.
Noise level
Some people enjoy the white noise an AC fan can provide, but if you prefer a quieter room, noise level is important to consider when choosing an AC unit, especially if you plan to have one in your bedroom. When searching for options, you can look for the units decibels (dB) rating.
Smart features
While all of our picks come with a physical remote control, the Dreo AC516S offers the most additional smart features, such as app and voice control, scheduling and smart home integration.
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