Window Air Conditioners

Window air conditioners can help you quickly reclaim your cool in any room any time of year.

AC Window Unit Sizes

Whether you have a double-hung, slider or casement window, you can find an air conditioner window unit perfect for your space. Most AC window units come with easy-mount kits and feature multiple fan speeds. Choose a high-end window AC to cool a large space. They’re made to chill and dehumidify rooms that are more than 1,500 square feet. For the ultimate flexibility, consider a small portable AC unit you can move from room to room with ease.

Once you calculate your room size, use the following guidelines to find the right size air conditioner window unit to cool your space:

• 100 to 350 square feet: 5,000 to 8,000 BTU
• 351 to 550 square feet: 9,000 to 12,000 BTU
• 551 to 1,000 square feet: 14,000 to 18,000 BTU
• 1,001 to 1,560 square feet: 18,000 to 24,000 BTU

Factor in ceiling height, sun exposure, room location and the number of people occupying the room to ensure you choose an air conditioner window unit with enough BTUs.

Window Air Conditioner Features

For convenience, select an air conditioner with a remote control or programmable timer. Smart window air conditioners with Wi-Fi connectivity put you in control of your temperature when you’re on the go and can alert you when it’s time to change the filter. Some models also feature energy-saving modes and auto restart, in case of a power outage. Window air conditioners with remotes also are available. Check out our Air Conditioner Buying Guide to decide which window unit is best for you.

Window air conditioners with heaters are a wise choice if you live in an area where snow and frost are common. Window heat pumps move heat instead of generating it, so you can save energy and money. For even more energy efficiency, choose an Energy Star window air conditioner, which uses about 10 percent less energy compared to other window ACs. Don’t forget to pick up a window air conditioner cover to protect your investment from winter weather damage.

For a list of tools and more information on how to install a window air conditioner, check out our installation guide.