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Labor Day SaleEnds September 7. Limited quantities. No rainchecks.Shop now

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heating, cooling & air quality

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air conditioners

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window air conditioners

Sizing Air Conditioner

When you're sizing air conditioner systems, you're looking at the amount of energy a unit uses to cool down a certain size of space. Larger rooms typically require more energy consumption, and vice versa. If you're looking for energy efficient units, consider these air conditioners. Browse the top-ranked list of air conditioners below along with associated reviews and opinions.

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  1. TCL - 450 Sq. Ft. 10,000 BTU 3-in-1 Smart Portable Air Conditioner - White

    SKU: J36QYTRL89

    The best floor air conditioner ever!!!I love it, I can’t think about something better !...Sleep mode is awesome too and I love the auto shut off. The best portable IMO...I love this a/c. Its the best...

    Product Description

    A smart white portable air conditioner with AC, fan, and dehumidifier modes, app and voice control.
    See all Portable Air Conditioners
    Your price for this item is $499.99
    Save $100
    The previous price was $599.99

  2. Amana - 450 Sq. Ft. 10,000 BTU Window Air Conditioner - White

    SKU: J39H83TK85

    Great price. Exceptional service. Recommended.....Cools living room and kitchen great. Relatively quiet.

    Product Description

    A white window air conditioner with 10,000 BTU, three cooling speeds, remote control, and washable filter.
    See all Window Air Conditioners
    Your price for this item is $297.00
    Save $52
    The previous price was $349.99

  3. Whirlpool - 1,500 Sq. Ft. 23,200 BTU 230V Window Mounted Air Conditioner with Supplemental Heat - White

    SKU: J39H83WV44

    At first I had my doubts, but thank God I took the chance and I love it, it cools the whole house....Works great! Quickly cools to the house down here in florida. Much quieter than I expected....Good...

    Product Description

    A white window air conditioner with 23,200 BTU cooling, supplemental heat, remote control, and washable filter.
    See all Window Air Conditioners
    Your price for this item is $799.99

  4. Keystone - 550 Sq. Ft. 12,000 BTU Window Mounted Inverter Air Conditioner with Remote Control - White

    SKU: J39H83WTQF

    Product Description

    A white window-mounted unit with 12,000 BTU inverter technology, remote control, and energy-saving features.
    See all Window Air Conditioners
    Your price for this item is $346.00
    Save $103
    The previous price was $449.99

  5. TCL - 350 Sq. Ft. 8,000 BTU Q-Series Smart Window Air Conditioner - White

    SKU: J36QYTKXLS

    Product Description

    A smart, ultra-quiet white window air conditioner with 8,000 BTU, app control, and ENERGY STAR certification.
    See all Window Air Conditioners
    Your price for this item is $309.95
    Save $10
    The previous price was $319.95

  6. Keystone - 450 Sq. Ft 10,000 Cooling BTU Window Air Conditioner - White

    SKU: J39H83KCXX

    Great and powerful AC unit!

    Product Description

    A white window air conditioner with 10,000 BTU cooling, dehumidification, remote control, and energy-saving modes.
    See all Window Air Conditioners
    Your price for this item is $329.99

  7. Keystone - 1,000 Sq. Ft. 18,000 BTU 230V Window Mounted Inverter Air Conditioner with Remote Control - White

    SKU: J39H83WTH5

    Great choice for apartment add on...If you live in an apartment before, you will love the function of this window unit AC....The remote makes life easier, and I love the energy saver mode—my electric...

    Product Description

    A white window-mounted inverter air conditioner with 18,000 BTU cooling, remote control, and energy-saving modes.
    See all Window Air Conditioners
    Your price for this item is $571.00
    Save $108
    The previous price was $679.99

  8. Perfect Aire - 10,000 BTU Compact Portable Air Conditioner Cools Up To 250 sq. ft. 24-Hour Timer - White

    SKU: J39VSJS2V5

    Product Description

    A compact white portable air conditioner with remote control, three fan speeds, and multiple smart cooling modes.
    See all Portable Air Conditioners
    Your price for this item is $385.00

  9. Senville - 5000 BTU Window Air Conditioner

    SKU: J34LC3GL3F

    Product Description

    A compact window unit with 5,000 BTU cooling power, 7 temperature settings, and remote control convenience.
    See all Window Air Conditioners
    Your price for this item is $179.99

  10. Gymax - 8000 BTU 3-in-1 Portable Air Conditioner ASHRAE AC Unit Air Cooler w/ 24H Timer - Gray

    SKU: CQ79STPCQ6

    Product Description

    A gray 3-in-1 portable AC unit offering cooling, dehumidifying, fan modes, remote, and 24-hour timer.
    See all Portable Air Conditioners
    Your price for this item is $199.99
    Save $250
    The previous price was $449.99
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FAQ

Common options include window air conditioners, portable air conditioners, through-the-wall units, and ductless mini-split systems. Each type has different installation and control requirements.

Helpful features may include programmable timers, remote controls, digital displays, multiple fan speeds, sleep modes, washable filters, and smart-home connectivity.

Some models include built-in Wi-Fi or support app-based controls, allowing you to adjust settings, create schedules, and monitor the unit from a compatible smartphone.

Turn off the unit, remove the filter according to the user manual, and clean it as directed. Reinstall the filter only after it is completely dry.

Cooling mode lowers the indoor temperature, while dehumidifying mode focuses on removing moisture from the air with less emphasis on changing the temperature.