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Best Buy customers often prefer the following products when searching for large ac units.

If you live in a large home, you may need to cool it with an AC unit that can handle the load. These units can be installed in any room of your house. Browse the top-ranked list of large AC units below along with associated reviews and opinions.

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  1. LG - 800 Sq. Ft. 15,000 BTU Smart Window Air Conditioner - White - Front_Zoom
    Top comment

    "Works well with large rooms but loud....We have a very large master bedroom, this A/C cools it down very quickly, and will keep it cool. ...Reno Can Get Nasty Hot In The Summer! No Worries With This Big LG AC!"

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    Product Description

    The LG LW1517ERSM is not only cool...it's SMART! Cool your home from anywhere using LG ThinQ technology to control your air conditioner with your phone or use with Amazon Alexa and Hey Google to have control with the sound of your voice. This quiet unit is ideal for cooling large rooms up to 800 sq. ft. and is energy efficient to help save on energy. The unit has 3 cooling and fan speeds and a 24 hour timer to create a cooling schedule. 4-way air deflection lets the flow of air be directed where it's needed most whether cooling, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include a remote control, easy window installation kit, slide-out (washable) filter and a check filter alert.
    See all Window Air Conditioners
    Top comment

    "Works well with large rooms but loud....We have a very large master bedroom, this A/C cools it down very quickly, and will keep it cool. ...Reno Can Get Nasty Hot In The Summer! No Worries With This Big LG AC!"

    See all customer reviews

    Product Description

    The LG LW1517ERSM is not only cool...it's SMART! Cool your home from anywhere using LG ThinQ technology to control your air conditioner with your phone or use with Amazon Alexa and Hey Google to have control with the sound of your voice. This quiet unit is ideal for cooling large rooms up to 800 sq. ft. and is energy efficient to help save on energy. The unit has 3 cooling and fan speeds and a 24 hour timer to create a cooling schedule. 4-way air deflection lets the flow of air be directed where it's needed most whether cooling, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include a remote control, easy window installation kit, slide-out (washable) filter and a check filter alert.
    See all Window Air Conditioners
    See all Window Air Conditioners
  2. LG - 1,000 Sq. Ft. 18,000 BTU Smart Window Air Conditioner - White - Front_Zoom
    Top comment

    "I use this in the downstairs part of my house which is a pretty large space. It keeps the entire downstairs cool and I love that the unit isn't noisy. ...We purchased this air conditioner couple of weeks ago. It is Big and beautiful. It cools beautifully but one of the faults I have is the snapping sounds it makes when it kicks in and out constantly. "

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    Product Description

    The LG LW1821ERSM is not only cool...it's SMART! Cool your home from anywhere using LG ThinQ technology to control your air conditioner with your phone or use with Amazon Alexa and Hey Google to have control with the sound of your voice. This quiet unit is ideal for cooling large rooms up to 1,000 sq. ft. The unit has 3 cooling and fan speeds and a 24 hour timer to create a cooling schedule. 4-way air deflection lets the flow of air be directed where it's needed most whether cooling, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include a remote control, easy window installation kit, slide-out (washable) filter and a check filter alert.
    See all Window Air Conditioners
    Top comment

    "I use this in the downstairs part of my house which is a pretty large space. It keeps the entire downstairs cool and I love that the unit isn't noisy. ...We purchased this air conditioner couple of weeks ago. It is Big and beautiful. It cools beautifully but one of the faults I have is the snapping sounds it makes when it kicks in and out constantly. "

    See all customer reviews

    Product Description

    The LG LW1821ERSM is not only cool...it's SMART! Cool your home from anywhere using LG ThinQ technology to control your air conditioner with your phone or use with Amazon Alexa and Hey Google to have control with the sound of your voice. This quiet unit is ideal for cooling large rooms up to 1,000 sq. ft. The unit has 3 cooling and fan speeds and a 24 hour timer to create a cooling schedule. 4-way air deflection lets the flow of air be directed where it's needed most whether cooling, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include a remote control, easy window installation kit, slide-out (washable) filter and a check filter alert.
    See all Window Air Conditioners
    See all Window Air Conditioners
  3. LG - 1,420 Sq. Ft. 24,000 BTU Smart Window Air Conditioner with 12,000 BTU Heater - White - Front_Zoom
    Top comment

    "[This review was collected as part of a promotion.] this ac is big enough to cool the whole house, and not that loud either...If you have a large space, you need to keep cool and maybe knock the chill off the room this is for you... "

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    Product Description

    The LW2421HRSM is the SMART way to keep your house feeling comfortable no matter what the weather is like outside! LG ThinQ technology lets you control your air conditioner with your phone or use with Amazon Alexa and Hey Google to have control with the sound of your voice. This unit ideal for cooling medium to large rooms up to 1440 sq. ft. and you can even add a bit of warmth on cooler days with the supplemental heat option. With 2 cooling and fan speeds and a 24 hour timer you can create the perfect cooling schedule. 4-way air deflection lets the flow of air be directed where it's needed most whether cooling, heating, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include a remote control, easy window installation kit, removable, washable filter and a check filter alert.
    See all Window Air Conditioners
    Top comment

    "[This review was collected as part of a promotion.] this ac is big enough to cool the whole house, and not that loud either...If you have a large space, you need to keep cool and maybe knock the chill off the room this is for you... "

    See all customer reviews

    Product Description

    The LW2421HRSM is the SMART way to keep your house feeling comfortable no matter what the weather is like outside! LG ThinQ technology lets you control your air conditioner with your phone or use with Amazon Alexa and Hey Google to have control with the sound of your voice. This unit ideal for cooling medium to large rooms up to 1440 sq. ft. and you can even add a bit of warmth on cooler days with the supplemental heat option. With 2 cooling and fan speeds and a 24 hour timer you can create the perfect cooling schedule. 4-way air deflection lets the flow of air be directed where it's needed most whether cooling, heating, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include a remote control, easy window installation kit, removable, washable filter and a check filter alert.
    See all Window Air Conditioners
    See all Window Air Conditioners
  4. LG - 1300 Sq. Ft. 24,500 BTU Window Air Conditioner - White - Front_Zoom
    Top comment

    "Big & KOOL...Only large window unit for job...It replaced same unit I had for over 5 years. Cools large living room, kitchen through Texas summer."

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    Product Description

    It’s important to get the right air conditioner for the job! The LG LW2516ER is ideal for cooling medium to large rooms up to 1,300 sq. ft. This Energy Efficient unit has 3 cooling and fan speeds and a 24 hour timer to create a cooling schedule. 4-way air deflection lets the flow of air be directed where it's needed most whether cooling, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include a remote control, easy window installation kit, removable, washable filter and a check filter alert.
    See all Air Conditioners
    Top comment

    "Big & KOOL...Only large window unit for job...It replaced same unit I had for over 5 years. Cools large living room, kitchen through Texas summer."

    See all customer reviews

    Product Description

    It’s important to get the right air conditioner for the job! The LG LW2516ER is ideal for cooling medium to large rooms up to 1,300 sq. ft. This Energy Efficient unit has 3 cooling and fan speeds and a 24 hour timer to create a cooling schedule. 4-way air deflection lets the flow of air be directed where it's needed most whether cooling, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include a remote control, easy window installation kit, removable, washable filter and a check filter alert.
    See all Air Conditioners
    See all Air Conditioners
  5. GE - 550 Sq. Ft. 12,000 BTU Smart Window Air Conditioner with WiFi and Remote - White - Front_Zoom
    Top comment

    "Cools a big area...I got this for my 1st floor which is pretty large this ac does a great job of keeping it cool .. some times it's a little to cool ☺️ but that's great !...Glad i went big...It works awesome in their living room space. Glad i went with a large model."

    See all customer reviews

    Product Description

    GE Appliances is dedicated to providing the right solutions for rooms of any size. Our window air conditioners are designed to offer exceptional comfort while remaining quiet, and our latest connected technology makes these products versatile and easy to use.This 12,000 BTU smart window air conditioner cools large rooms up to 550 square feet. Energy efficient cooling with 3 cooling and 3 fan speeds provide flexible and optimal home comfort. Integration with the SmartHQ app allows you to monitor, schedule, and control your connected air conditioner from anywhere, or use the electronic controls with included remote to easily to adjust and manage your settings. This AC installs easily in a double hung window with included EZ Mount window kit and fixed chassis. Additional features like eco mode, power interruption restart, 24-hour on/off timer, and removable filter offer ease of use and maintenance.
    See all Window Air Conditioners
    Top comment

    "Cools a big area...I got this for my 1st floor which is pretty large this ac does a great job of keeping it cool .. some times it's a little to cool ☺️ but that's great !...Glad i went big...It works awesome in their living room space. Glad i went with a large model."

    See all customer reviews

    Product Description

    GE Appliances is dedicated to providing the right solutions for rooms of any size. Our window air conditioners are designed to offer exceptional comfort while remaining quiet, and our latest connected technology makes these products versatile and easy to use.This 12,000 BTU smart window air conditioner cools large rooms up to 550 square feet. Energy efficient cooling with 3 cooling and 3 fan speeds provide flexible and optimal home comfort. Integration with the SmartHQ app allows you to monitor, schedule, and control your connected air conditioner from anywhere, or use the electronic controls with included remote to easily to adjust and manage your settings. This AC installs easily in a double hung window with included EZ Mount window kit and fixed chassis. Additional features like eco mode, power interruption restart, 24-hour on/off timer, and removable filter offer ease of use and maintenance.
    See all Window Air Conditioners
    See all Window Air Conditioners
  6. GE - 700 Sq. Ft. 14,000 BTU Smart Window Air Conditioner with WiFi and Remote - White - Front_Zoom
    Top comment

    "Large A/C, works as described. Cools a large area in my house....BIG LOUD...I LIKE IT GOOD COLOR BIG EASY TO USE CHEAP GOOD BUY"

    See all customer reviews

    Product Description

    GE Appliances is dedicated to providing the right solutions for rooms of any size. Our window air conditioners are designed to offer exceptional comfort while remaining quiet, and our latest connected technology makes these products versatile and easy to use.This 14,000 BTU smart window air conditioner cools large rooms up to 700 square feet. Energy efficient cooling with 3 cooling and 3 fan speeds provide flexible and optimal home comfort. Integration with the SmartHQ app allows you to monitor, schedule, and control your connected air conditioner from anywhere, or use the electronic controls with included remote to easily to adjust and manage your settings. This AC installs easily in a double hung window with included EZ Mount window kit and fixed chassis. Additional features like eco mode, power interruption restart, 24-hour on/off timer, and removable filter offer ease of use and maintenance.
    See all Window Air Conditioners
    Top comment

    "Large A/C, works as described. Cools a large area in my house....BIG LOUD...I LIKE IT GOOD COLOR BIG EASY TO USE CHEAP GOOD BUY"

    See all customer reviews

    Product Description

    GE Appliances is dedicated to providing the right solutions for rooms of any size. Our window air conditioners are designed to offer exceptional comfort while remaining quiet, and our latest connected technology makes these products versatile and easy to use.This 14,000 BTU smart window air conditioner cools large rooms up to 700 square feet. Energy efficient cooling with 3 cooling and 3 fan speeds provide flexible and optimal home comfort. Integration with the SmartHQ app allows you to monitor, schedule, and control your connected air conditioner from anywhere, or use the electronic controls with included remote to easily to adjust and manage your settings. This AC installs easily in a double hung window with included EZ Mount window kit and fixed chassis. Additional features like eco mode, power interruption restart, 24-hour on/off timer, and removable filter offer ease of use and maintenance.
    See all Window Air Conditioners
    See all Window Air Conditioners
  7. LG - 1,000 Sq. Ft. 18,000 BTU Smart Window Air Conditioner with 12,000 BTU Heater - White - Front_Zoom
    Top comment

    "I needed help with setup. It is very large and cools my small space so well. It is big and heavy. ...Fit perfectly. Does great cooling large room."

    See all customer reviews

    Product Description

    The LW1821HRSM is the SMART way to keep your house feeling comfortable no matter what the weather is like outside! LG ThinQ technology lets you control your air conditioner with your phone or use with Amazon Alexa and Hey Google to have control with the sound of your voice. This unit ideal for cooling medium to large rooms up to 1000 sq. ft. and you can even add a bit of warmth on cooler days with the supplemental heat option. With 2 cooling and fan speeds and a 24 hour timer you can create the perfect cooling schedule. 4-way air deflection lets the flow of air be directed where it's needed most whether cooling, heating, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include a remote control, easy window installation kit, removable, washable filter and a check filter alert.
    See all Window Air Conditioners
    Top comment

    "I needed help with setup. It is very large and cools my small space so well. It is big and heavy. ...Fit perfectly. Does great cooling large room."

    See all customer reviews

    Product Description

    The LW1821HRSM is the SMART way to keep your house feeling comfortable no matter what the weather is like outside! LG ThinQ technology lets you control your air conditioner with your phone or use with Amazon Alexa and Hey Google to have control with the sound of your voice. This unit ideal for cooling medium to large rooms up to 1000 sq. ft. and you can even add a bit of warmth on cooler days with the supplemental heat option. With 2 cooling and fan speeds and a 24 hour timer you can create the perfect cooling schedule. 4-way air deflection lets the flow of air be directed where it's needed most whether cooling, heating, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include a remote control, easy window installation kit, removable, washable filter and a check filter alert.
    See all Window Air Conditioners
    See all Window Air Conditioners
  8. GE Profile - 550 Sq Ft 12,200 BTU Smart Ultra Quiet Air Conditioner - White - Front_Zoom
    Top comment

    "The GE Profile ClearView 12,200 BTU inverter smart window air conditioner is a powerful and efficient cooling solution for large rooms up to 550 sq feet. Its inverter technology ensures energy efficiency, while the smart features provide convenient control through your smartphone. ...Pop this baby over the window sill and plug it in. It came in a large box. It was well packed and in great condition. "

    See all customer reviews

    Product Description

    As the Quietest Window Air Conditioner Brand in the United States*, GE Profile is dedicated to providing the right solutions for rooms of various sizes. Our Energy Star certified window air conditioners are designed to offer exceptional comfort with minimal noise, and our latest WiFi connected technology makes these products versatile and easy to use. The ClearView inverter 12200 BTU smart window air conditioner cools large rooms up to 550 square feet and sits over the windowsill to give you a full view to the outside and allow more natural light into your room. The easy and safe installation with no mounting bracket needed* (subject to local code approval) allows you to freely open and close the window with the unit installed. The industry exclusive flex-depth expands to fit walls between 4.5" to 13.75" thick, so you can customize your ClearView fit. Energy-efficient cooling with four modes and three fan speeds provide flexible and optimal home comfort. Integration with the SmartHQ app allows you to monitor, schedule, and control your connected air conditioner from anywhere, or check your energy usage and set-up geolocation. Use the electronic controls with included remote to easily to adjust and manage your settings. This AC installs in a double hung window with included window kit. Additional features like eco mode, power interruption restart, 24-hour on/off timer, and removable filter offer ease of use and maintenance. *Based on avg sound ratings by brand of 5K-24K BTU Window AC from publicly available info, compared to 74% of the product in the US WAC category per Traqline 9/21
    See all Window Air Conditioners
    Top comment

    "The GE Profile ClearView 12,200 BTU inverter smart window air conditioner is a powerful and efficient cooling solution for large rooms up to 550 sq feet. Its inverter technology ensures energy efficiency, while the smart features provide convenient control through your smartphone. ...Pop this baby over the window sill and plug it in. It came in a large box. It was well packed and in great condition. "

    See all customer reviews

    Product Description

    As the Quietest Window Air Conditioner Brand in the United States*, GE Profile is dedicated to providing the right solutions for rooms of various sizes. Our Energy Star certified window air conditioners are designed to offer exceptional comfort with minimal noise, and our latest WiFi connected technology makes these products versatile and easy to use. The ClearView inverter 12200 BTU smart window air conditioner cools large rooms up to 550 square feet and sits over the windowsill to give you a full view to the outside and allow more natural light into your room. The easy and safe installation with no mounting bracket needed* (subject to local code approval) allows you to freely open and close the window with the unit installed. The industry exclusive flex-depth expands to fit walls between 4.5" to 13.75" thick, so you can customize your ClearView fit. Energy-efficient cooling with four modes and three fan speeds provide flexible and optimal home comfort. Integration with the SmartHQ app allows you to monitor, schedule, and control your connected air conditioner from anywhere, or check your energy usage and set-up geolocation. Use the electronic controls with included remote to easily to adjust and manage your settings. This AC installs in a double hung window with included window kit. Additional features like eco mode, power interruption restart, 24-hour on/off timer, and removable filter offer ease of use and maintenance. *Based on avg sound ratings by brand of 5K-24K BTU Window AC from publicly available info, compared to 74% of the product in the US WAC category per Traqline 9/21
    See all Window Air Conditioners
    See all Window Air Conditioners
  9. GE Profile - 450 Sq Ft 10,300 BTU Smart Ultra Quiet Air Conditioner - White - Front_Zoom
    Top comment

    "It is much more quiet than a previous unit I had and does a great job cooling a large 20x20 room and adjoining bathroom. Set up and installation was a breeze....Big enough for a 24x16 shop."

    See all customer reviews

    Product Description

    As the Quietest Window Air Conditioner Brand in the United States*, GE Profile is dedicated to providing the right solutions for rooms of various sizes. Our Energy Star certified window air conditioners are designed to offer exceptional comfort with minimal noise, and our latest WiFi connected technology makes these products versatile and easy to use. The ClearView inverter 10300 BTU smart window air conditioner cools large rooms up to 450 square feet and sits over the windowsill to give you a full view to the outside and allow more natural light into your room. The easy and safe installation with no mounting bracket needed* (subject to local code approval) allows you to freely open and close the window with the unit installed. The industry exclusive flex-depth expands to fit walls between 4.5" to 13.75" thick, so you can customize your ClearView fit. Energy-efficient cooling with four modes and three fan speeds provide flexible and optimal home comfort. Integration with the SmartHQ app allows you to monitor, schedule, and control your connected air conditioner from anywhere, or check your energy usage and set-up geolocation. Use the electronic controls with included remote to easily to adjust and manage your settings. This AC installs in a double hung window with included window kit. Additional features like eco mode, power interruption restart, 24-hour on/off timer, and removable filter offer ease of use and maintenance. *Based on avg sound ratings by brand of 5K-24K BTU Window AC from publicly available info, compared to 74% of the product in the US WAC category per Traqline 9/21
    See all Window Air Conditioners
    Top comment

    "It is much more quiet than a previous unit I had and does a great job cooling a large 20x20 room and adjoining bathroom. Set up and installation was a breeze....Big enough for a 24x16 shop."

    See all customer reviews

    Product Description

    As the Quietest Window Air Conditioner Brand in the United States*, GE Profile is dedicated to providing the right solutions for rooms of various sizes. Our Energy Star certified window air conditioners are designed to offer exceptional comfort with minimal noise, and our latest WiFi connected technology makes these products versatile and easy to use. The ClearView inverter 10300 BTU smart window air conditioner cools large rooms up to 450 square feet and sits over the windowsill to give you a full view to the outside and allow more natural light into your room. The easy and safe installation with no mounting bracket needed* (subject to local code approval) allows you to freely open and close the window with the unit installed. The industry exclusive flex-depth expands to fit walls between 4.5" to 13.75" thick, so you can customize your ClearView fit. Energy-efficient cooling with four modes and three fan speeds provide flexible and optimal home comfort. Integration with the SmartHQ app allows you to monitor, schedule, and control your connected air conditioner from anywhere, or check your energy usage and set-up geolocation. Use the electronic controls with included remote to easily to adjust and manage your settings. This AC installs in a double hung window with included window kit. Additional features like eco mode, power interruption restart, 24-hour on/off timer, and removable filter offer ease of use and maintenance. *Based on avg sound ratings by brand of 5K-24K BTU Window AC from publicly available info, compared to 74% of the product in the US WAC category per Traqline 9/21
    See all Window Air Conditioners
    See all Window Air Conditioners
  10. GE Profile - 550 Sq Ft 12,000 BTU Smart Ultra Quiet Air Conditioner - White - Front_Zoom
    Top comment

    "Works ok on high but to cool a large space on econ would take forever....Good Product for large rooms and Amazing Features !!"

    See all customer reviews

    Product Description

    As the Quietest Window Air Conditioner Brand in the United States*, GE Profile is dedicated to providing the right solutions for rooms of various sizes. Our Energy Star certified window air conditioners are designed to offer exceptional comfort with minimal noise, and our latest WiFi connected technology makes these products versatile and easy to use. The inverter 12000 BTU smart window air conditioner cools large rooms up to 550 square feet. The easy installation with included EZ mount kit installs in a double hung window (size: W 26.375 - 40.5" and H 14.0625"). Energy-efficient cooling with four cooling modes and three fan speeds provide flexible and optimal home comfort. Integration with the SmartHQ app allows you to monitor, schedule, and control your connected air conditioner from anywhere, or check your energy usage and set-up geolocation. Use the electronic controls with included remote to easily to adjust and manage your settings. Additional features like eco mode, power interruption restart, 24-hour on/off timer, and removable filter offer ease of use and maintenance. *Based on avg sound ratings by brand of 5K-24K BTU Window AC from publicly available info, compared to 74% of the product in the US WAC category per Traqline 9/21 **Than DOE minimum efficiency model of comparable capacity, Based on July 2021 Energy Star listing of Window AC's.
    See all Window Air Conditioners
    Top comment

    "Works ok on high but to cool a large space on econ would take forever....Good Product for large rooms and Amazing Features !!"

    See all customer reviews

    Product Description

    As the Quietest Window Air Conditioner Brand in the United States*, GE Profile is dedicated to providing the right solutions for rooms of various sizes. Our Energy Star certified window air conditioners are designed to offer exceptional comfort with minimal noise, and our latest WiFi connected technology makes these products versatile and easy to use. The inverter 12000 BTU smart window air conditioner cools large rooms up to 550 square feet. The easy installation with included EZ mount kit installs in a double hung window (size: W 26.375 - 40.5" and H 14.0625"). Energy-efficient cooling with four cooling modes and three fan speeds provide flexible and optimal home comfort. Integration with the SmartHQ app allows you to monitor, schedule, and control your connected air conditioner from anywhere, or check your energy usage and set-up geolocation. Use the electronic controls with included remote to easily to adjust and manage your settings. Additional features like eco mode, power interruption restart, 24-hour on/off timer, and removable filter offer ease of use and maintenance. *Based on avg sound ratings by brand of 5K-24K BTU Window AC from publicly available info, compared to 74% of the product in the US WAC category per Traqline 9/21 **Than DOE minimum efficiency model of comparable capacity, Based on July 2021 Energy Star listing of Window AC's.
    See all Window Air Conditioners
    See all Window Air Conditioners
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