Windmill features: Power: 8,000 BTU | Space size: Medium | Price: $369

The Windmill Air Conditioner may not be the cheapest on our list, but it is our top pick for the best cheap air conditioner, given the fully loaded benefits this model provides. It is a smart air conditioner that goes right into your window, its sleek design requiring a very small footprint. It comes ready to go right out of the box, so you can save the time and heartache of set-up. A convenient guide is included to steer installation in the right direction. 

The unit comes with 8,000 BTU power, giving a bit more than the average air conditioner, so it is enough to cool down a medium-sized space. That in itself offers far greater flexibility in where you can use it and still feel the cooling effects. It is also the quietest machine on our list, as soft as the evaCHILL that is a fraction of its size. However, it still comes packed with features. 

It is also Wi-FI-enabled and connects to a convenient app that easily works with your Android or iPhone device, allowing you the option to control the unit remotely. With an auto-dimming LED display, you can use Google Assistant or Amazon’s Alexa to control the unit by voice. In case you’re not completely satisfied with your purchase, the air conditioner comes with a 30-day, no-questions asked return policy. 

Black+Decker Portable Air Conditioner features: Power: 8,000 BTU | Space size: up to 350 square feet | Price: $320

The Black+Decker Portable Air Conditioner with Remote Control is a great pick for those smaller rooms, like your bedroom or office. The unit is designed for areas no larger than 350 square feet for maximum performance. It is a corded model, so it can only go so far, but there is a handy remote control that comes included to help you control the unit from across the room. Thanks to an unobtrusive design, it is a compact unit in white that seamlessly blends in with most home decor. 

Still, this air conditioner packs in some extra features. It boasts a fan speed that you can easily adjust to your liking with a convenient LED display. The coolest setting will bring the room to a brisk 65°F, plus there is a 24-hour timer option that can help you save money on those monthly bills. While this is not one of the noisiest units out there, it is not the quietest, either, so users are sure to appreciate the option of a quiet fan mode at night. The unit also features a built-in dehumidifier to combat those pesky humid summer days.

Evapolar evaCHILL features: Power: 7.5 watts | Space size: 26 square feet | Price: $99

The Evapolar evaCHILL is one of the most popular models for the best compact air conditioner, and it is also one of the cheapest, making it our pick for the best budget air conditioner. 

At just two pounds, this is a USB-powered unit that is super easy to transport wherever you like in just the palm of your hand. It is energy-efficient with a 5 Star Energy Star rating, and its battery is enough to power for up to eight hours.  Despite its diminutive size, this is a unit that is very capable, holding its own in rooms as large as 26 square feet. 

Of course, it is not the pick you want when you are looking to cool bigger spaces, but for your typical school or office desk, it could be the perfect reprieve you have been needing in your room, home office, or dorm. Simply touch to control the unit, and choose the feature you want between cooling and humidifying. 

SereneLife Compact Portable Air Conditioner features: Power: 8,000 BTU | Space size: 350 square feet | Price: $300

The SereneLife Powerful Portable Room Air Conditioner packs some power with an 8,000 BTU unit and a built-in dehumidifier to combat humid nights. It can rest on the floor and has wheels attached for added convenience, but you will need to plug the unit in for use. Set up is made simple so you can start using the air conditioner’s two different fan settings. Additionally, there’s a timer that will automatically turns off after 24 hours.

Even with these rich features, this model is affordably priced at $300, making it a far more affordable and economical pick than many of the other options out there. It also is capable of cooling rooms much larger than other units can, giving a total coverage area of more than 350 square feet.

Whynter Elite Dual Hose Portable Air Conditioner features: Power: 12,000 BTU | Space size: Up to 400 square feet | Price: $399

When you have a large area to cool, the Whynter Elite Dual Hose Portable Air Conditioner can be a great choice, thanks to its coverage of up to 400 square feet. At almost $465, its price tag belies its power with maximum 12,000 BTU coverage, the largest of any unit on our list. Despite a conveniently portable size, this unit features a dual-hose system that allows for cold air to spread more evenly and quickly throughout your space. It easily works in conjunction with your home or building’s A/C unit to better facilitate the movement of cold air, so you can better enjoy the effects of your area’s built-in air conditioning. 

This unit is one that is easily portable and offers a simplified set-up process to get you started. Whynter claims the built-in dehumidifier can remove 76 pints of excess moisture each day. To help save money, use the 24-hour programmable timer, so your unit only runs when you need it the most.