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Best Buy customers often prefer the following products when searching for big air conditioner.

Air conditioners are one of the most important appliances in your home. The best ones are big enough to keep you comfortable, are energy efficient, and have features that are helpful in maintaining the temperature in your home. Browse the top-ranked list of big air conditioners below along with associated reviews and opinions.

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  1. Royal Sovereign - 18,000 BTU Mini-Split Air Conditioner - White - Front_Zoom

    Product Description

    Enjoy the perfect room temperature with this Royal Sovereign 17 SEER mini-split air conditioner. Four function settings provide the flexibility to adapt to changing conditions, while the auto-restart feature ensures effortless power-ups in case of power outages. This Royal Sovereign 17 SEER mini-split air conditioner offers airflow in four directions for balanced distribution.
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    Product Description

    Enjoy the perfect room temperature with this Royal Sovereign 17 SEER mini-split air conditioner. Four function settings provide the flexibility to adapt to changing conditions, while the auto-restart feature ensures effortless power-ups in case of power outages. This Royal Sovereign 17 SEER mini-split air conditioner offers airflow in four directions for balanced distribution.
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    Your price for this item is $1,249.99
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  2. Royal Sovereign - 12,000 BTU Mini-Split Air Conditioner - White - Front_Zoom
    Top comment

    "I have a lot of experience working on residential heat and air units and had the equipment to install it myself. ...Mini split air conditioner"

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    Product Description

    Enjoy the perfect room temperature with this Royal Sovereign 17 SEER mini-split air conditioner. Four function settings provide the flexibility to adapt to changing conditions, while the auto-restart feature ensures effortless power-ups in case of power outages. This Royal Sovereign 17 SEER mini-split air conditioner offers airflow in four directions for balanced distribution.
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    Top comment

    "I have a lot of experience working on residential heat and air units and had the equipment to install it myself. ...Mini split air conditioner"

    See all customer reviews

    Product Description

    Enjoy the perfect room temperature with this Royal Sovereign 17 SEER mini-split air conditioner. Four function settings provide the flexibility to adapt to changing conditions, while the auto-restart feature ensures effortless power-ups in case of power outages. This Royal Sovereign 17 SEER mini-split air conditioner offers airflow in four directions for balanced distribution.
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    Your price for this item is $999.99
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  3. Whynter - ARC-1230WNH 600 Sq.Ft Smart NEX Inverter Portable Air Conditioner 12000 BTU Heater - White - Front_Zoom
    Top comment

    "Great portable air conditioner/heat pump...Great portable air conditioner and heat pump. Use the air conditioner to keep my bedroom cooler at night. ...I got this mostly for the powerful cooling but having the heater function for colder nights is a must have. I love this portable air conditioner. Helping us through this crazy summer heat."

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    Product Description

    The Whynter ARC-1230WNH Inverter Dual Hose Portable Air Conditioner and Heater has the highest cooling and heating BTU (14,000 ASHRAE / 12,000 SACC) in the market. The cooling power you need to cool, dehumidify or circulate the air in up to 600 sq. ft of space. Smart functionalities include the NetHome Plus app to control your portable air conditioner through Wi-Fi from virtually anywhere. You can also control it with Amazon Alexa or Google Home voice assistant. Intelligent features such as the 24-hour Timer, Sleep Mode, Auto restart, Self-Diagnosis, Express Run Settings, Schedules, and Filter Check Reminder Light. As pioneers in the air comfort industry, we are introducing the next-generation Inverter Technology currently only being used in high-efficiency ductless mini-split air conditioners to our NEX line of portable air conditioners. The variable-speed system allows the compressor to optimize efficiency and power consumption together while maintaining a specified output. The advantages of inverter technology are estimated 40% – 50% in energy savings, 2 times quicker to achieve desired temperature, quieter operation, minimized temperature fluctuations, no voltage peaks from the compressor. The innovative two-hose-in-one design and the sealed bottom structure ensure no heat leakage. This cooling setup extracts and exhausts air from the outside, so the indoor space reaches an independent and balanced cool air circulation. As a result, the entire room can be cooled down quickly and effectively. The noise level is as low as 47dB(A) in low fan speed, almost as quite as a library. You can control your portable air conditioner anywhere with the NetHome Plus app for Android and iOS and make your home comfortable even before you arrive. Also, you can use Amazon Alexa or Google Home voice assistant to operate the air conditioner.
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    Top comment

    "Great portable air conditioner/heat pump...Great portable air conditioner and heat pump. Use the air conditioner to keep my bedroom cooler at night. ...I got this mostly for the powerful cooling but having the heater function for colder nights is a must have. I love this portable air conditioner. Helping us through this crazy summer heat."

    See all customer reviews

    Product Description

    The Whynter ARC-1230WNH Inverter Dual Hose Portable Air Conditioner and Heater has the highest cooling and heating BTU (14,000 ASHRAE / 12,000 SACC) in the market. The cooling power you need to cool, dehumidify or circulate the air in up to 600 sq. ft of space. Smart functionalities include the NetHome Plus app to control your portable air conditioner through Wi-Fi from virtually anywhere. You can also control it with Amazon Alexa or Google Home voice assistant. Intelligent features such as the 24-hour Timer, Sleep Mode, Auto restart, Self-Diagnosis, Express Run Settings, Schedules, and Filter Check Reminder Light. As pioneers in the air comfort industry, we are introducing the next-generation Inverter Technology currently only being used in high-efficiency ductless mini-split air conditioners to our NEX line of portable air conditioners. The variable-speed system allows the compressor to optimize efficiency and power consumption together while maintaining a specified output. The advantages of inverter technology are estimated 40% – 50% in energy savings, 2 times quicker to achieve desired temperature, quieter operation, minimized temperature fluctuations, no voltage peaks from the compressor. The innovative two-hose-in-one design and the sealed bottom structure ensure no heat leakage. This cooling setup extracts and exhausts air from the outside, so the indoor space reaches an independent and balanced cool air circulation. As a result, the entire room can be cooled down quickly and effectively. The noise level is as low as 47dB(A) in low fan speed, almost as quite as a library. You can control your portable air conditioner anywhere with the NetHome Plus app for Android and iOS and make your home comfortable even before you arrive. Also, you can use Amazon Alexa or Google Home voice assistant to operate the air conditioner.
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    Your price for this item is $805.99
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  4. LG - 800 Sq. Ft. 15,000 BTU Smart Window Air Conditioner - White - Front_Zoom
    Top comment

    "Air conditioning...I bought this air conditioner about a month ago and it cooldown really good...This Air Conditioner works fantastic and as advertised. "

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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 Star certified 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.
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    Top comment

    "Air conditioning...I bought this air conditioner about a month ago and it cooldown really good...This Air Conditioner works fantastic and as advertised. "

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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 Star certified 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.
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    Your price for this item is $539.99
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  5. Whirlpool - 550 Sq. Ft 12,000 BTU 230V Through-the-Wall Air Conditioner with 10,600 BTU Heater - White - Front_Zoom
    Top comment

    "Through the wall air conditioner...Best & Powerful Wall Unit Air Conditioner...We purchased this wall unit air conditioner for our kitchen, living room and bedrooms which are all located on one level. "

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    Product Description

    Trust Whirlpool to help you care for your family and make your life easier. Our line of home comfort products keeps the climate inside your home just right - making the air comfortable, clean, and fresh. Whirlpool’s through-the-wall air conditioners are compatible with standard wall sleeves and offer a permanent cooling solution for areas of your home that are not connected to a central cooling system, saving you the hassle of summer installation then winter storage season after season. In addition, our heat/cool units provide supplemental heating to warm up the room on those unexpected chilly nights without heating the entire house. This heat/cool model offers 10,600 BTUs of supplemental heating and 12,000 BTUs of cooling for a room up to 550 square feet. It requires a special 230-volt/20-amp electrical outlet and will not operate with a standard 115V household electrical outlet. Take comfort and caring to the next level with Whirlpool.
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    Top comment

    "Through the wall air conditioner...Best & Powerful Wall Unit Air Conditioner...We purchased this wall unit air conditioner for our kitchen, living room and bedrooms which are all located on one level. "

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    Product Description

    Trust Whirlpool to help you care for your family and make your life easier. Our line of home comfort products keeps the climate inside your home just right - making the air comfortable, clean, and fresh. Whirlpool’s through-the-wall air conditioners are compatible with standard wall sleeves and offer a permanent cooling solution for areas of your home that are not connected to a central cooling system, saving you the hassle of summer installation then winter storage season after season. In addition, our heat/cool units provide supplemental heating to warm up the room on those unexpected chilly nights without heating the entire house. This heat/cool model offers 10,600 BTUs of supplemental heating and 12,000 BTUs of cooling for a room up to 550 square feet. It requires a special 230-volt/20-amp electrical outlet and will not operate with a standard 115V household electrical outlet. Take comfort and caring to the next level with Whirlpool.
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    Your price for this item is $649.99
    Price Drop
    The previous price was $749.99
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  6. LG - 400 Sq. Ft. Smart Portable Air Conditioner - Black - Front_Zoom
    Top comment

    "Air conditioner...[This review was collected as part of a promotion.] Very happy with the air conditioner If I had to buy another one it would be just like this 1 thank you very much...Perfection in an air conditioner...This is the most wonderful air conditioner I have ever owned. It's quiet. It's powerful. "

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    Product Description

    This portable air conditioner is the SMART choice for versatile cooling! 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 medium rooms up to 400 sq. ft. The unit has 2 cooling and fan speeds and a 24 hour timer to create a cooling schedule. The auto-swing air vent helps direct the flow of air 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. Easy rolling casters allow you to efficiently move the unit to another location. Other features include an LCD remote control, easy window venting installation kit, removable/washable filter and a check filter alert.
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    Top comment

    "Air conditioner...[This review was collected as part of a promotion.] Very happy with the air conditioner If I had to buy another one it would be just like this 1 thank you very much...Perfection in an air conditioner...This is the most wonderful air conditioner I have ever owned. It's quiet. It's powerful. "

    See all customer reviews

    Product Description

    This portable air conditioner is the SMART choice for versatile cooling! 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 medium rooms up to 400 sq. ft. The unit has 2 cooling and fan speeds and a 24 hour timer to create a cooling schedule. The auto-swing air vent helps direct the flow of air 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. Easy rolling casters allow you to efficiently move the unit to another location. Other features include an LCD remote control, easy window venting installation kit, removable/washable filter and a check filter alert.
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    Your price for this item is $529.99
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  7. LG - 330 Sq. Ft. 8000 BTU Through-the-Wall Air Conditioner - White - Front_Zoom
    Top comment

    "Air Conditioner number 1...The new air conditioner Lg Is so good, the refrigeration is great...Great in wall air conditioner....The air conditioner is super quiet and extremely energy efficient. "

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    Product Description

    Our Energy Star certified 8,000 BTU Through-the-Wall Air Conditioner is ideal for cooling small to medium size rooms up to 340 sq. ft. It has 3 cooling and fan speeds to customize your comfort. The 4-way air deflection allows you to direct the flow of air where it's needed most whether cooling, dehumidifying or just circulating air. Use the convenient 24 hour on/off timer and energy saver option to help save on energy costs. 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, trim kit, removable/washable filter and a check filter alert. (Wall sleeve sold separately)
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    Top comment

    "Air Conditioner number 1...The new air conditioner Lg Is so good, the refrigeration is great...Great in wall air conditioner....The air conditioner is super quiet and extremely energy efficient. "

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    Product Description

    Our Energy Star certified 8,000 BTU Through-the-Wall Air Conditioner is ideal for cooling small to medium size rooms up to 340 sq. ft. It has 3 cooling and fan speeds to customize your comfort. The 4-way air deflection allows you to direct the flow of air where it's needed most whether cooling, dehumidifying or just circulating air. Use the convenient 24 hour on/off timer and energy saver option to help save on energy costs. 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, trim kit, removable/washable filter and a check filter alert. (Wall sleeve sold separately)
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    Your price for this item is $400.99
    The previous price was $499.99
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  8. LG - 10,000 BTU Smart Window Air Conditioner - White - Front_Zoom
    Top comment

    "Great air conditioner....[This review was collected as part of a promotion.] This is the second LG air conditioner I purchase. Very please...LG air conditioner...I bought first time LG air conditioner! Very happy with it. Nice design, very quiet and has Wi-Fi +"

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    Product Description

    Stay cool on the hottest days with this 10,000 BTU LG window air conditioner. Its four-way air deflection ensures uniform distribution of air, while its energy-saver function intermittently shuts the fan off when the desired temperature is reached. The remote control on this LG window air conditioner lets you adjust the temperature from anywhere in the room.
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    Top comment

    "Great air conditioner....[This review was collected as part of a promotion.] This is the second LG air conditioner I purchase. Very please...LG air conditioner...I bought first time LG air conditioner! Very happy with it. Nice design, very quiet and has Wi-Fi +"

    See all customer reviews

    Product Description

    Stay cool on the hottest days with this 10,000 BTU LG window air conditioner. Its four-way air deflection ensures uniform distribution of air, while its energy-saver function intermittently shuts the fan off when the desired temperature is reached. The remote control on this LG window air conditioner lets you adjust the temperature from anywhere in the room.
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    Your price for this item is $389.99
    Price Drop
    The previous price was $439.99
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  9. Keystone - 300 Sq. Ft. Portable Air Conditioner with Dehumidifer - White - Front_Zoom
    Top comment

    "[This review was collected as part of a promotion.] I love this air conditioner unit. It can honestly be moved from one room to another. ...[This review was collected as part of a promotion.] This portable air conditioner is best used in rooms up to 300 sq. ft. "

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    Product Description

    At Keystone, your family’s comfort starts here. The Keystone 7,000 BTU portable air conditioner with I Sense remote control is an excellent choice for cooling a room up to 300 square feet. This exceptional air conditioner features electronic controls with an LED display and a temperature sensing LCD remote control, allowing you to conveniently see, set, and maintain the temperature from across the room. It also includes a constant fan mode, a programmable 24-hour timer, and a sleep mode to save you money while keeping you cool and comfortable. With a Keystone portable air conditioner, you and your family can relax in cool, blissful comfort.
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    Top comment

    "[This review was collected as part of a promotion.] I love this air conditioner unit. It can honestly be moved from one room to another. ...[This review was collected as part of a promotion.] This portable air conditioner is best used in rooms up to 300 sq. ft. "

    See all customer reviews

    Product Description

    At Keystone, your family’s comfort starts here. The Keystone 7,000 BTU portable air conditioner with I Sense remote control is an excellent choice for cooling a room up to 300 square feet. This exceptional air conditioner features electronic controls with an LED display and a temperature sensing LCD remote control, allowing you to conveniently see, set, and maintain the temperature from across the room. It also includes a constant fan mode, a programmable 24-hour timer, and a sleep mode to save you money while keeping you cool and comfortable. With a Keystone portable air conditioner, you and your family can relax in cool, blissful comfort.
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    Your price for this item is $369.99
    Price Drop
    The previous price was $389.99
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  10. LG - 350 Sq. Ft. Portable Air Conditioner - White - Front_Zoom
    Top comment

    "Air conditioner...I am glad I purchased this air conditioner. It is just what I needed....Air Conditioner...Very good air conditioner cools down my room amazing and fast great product"

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    Product Description

    This portable air conditioner is a great choice for versatile cooling! This quiet unit is ideal for cooling medium rooms up to 350 sq. ft. The unit has 2 cooling and fan speeds and a 24 hour timer to create a cooling schedule. The auto-swing air vent helps direct the flow of air 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. Easy rolling casters allow you to efficiently move the unit to another location. Other features include an LCD remote control, easy window venting installation kit, removable/washable filter and a check filter alert.
    See all Portable Air Conditioners
    Top comment

    "Air conditioner...I am glad I purchased this air conditioner. It is just what I needed....Air Conditioner...Very good air conditioner cools down my room amazing and fast great product"

    See all customer reviews

    Product Description

    This portable air conditioner is a great choice for versatile cooling! This quiet unit is ideal for cooling medium rooms up to 350 sq. ft. The unit has 2 cooling and fan speeds and a 24 hour timer to create a cooling schedule. The auto-swing air vent helps direct the flow of air 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. Easy rolling casters allow you to efficiently move the unit to another location. Other features include an LCD remote control, easy window venting installation kit, removable/washable filter and a check filter alert.
    See all Portable Air Conditioners
    Your price for this item is $378.99
    The previous price was $399.99
    See all Portable Air Conditioners
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