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high efficiency air conditioners

Best Buy customers often prefer the following products when searching for High Efficiency Air Conditioners.

Browse the top-ranked list of High Efficiency Air Conditioners below along with associated reviews and opinions.

Browse the top-ranked list of High Efficiency Air Conditioners below along with associated reviews and opinions.

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  1. Top comment

    "Great !...Not Bad...I can turn it down and direct the air so that it hits me directly while I am sleeping or turn it up so that it hits the ceiling fan and causes it to move the air through the entire room....It does a good job of cooling down my small house (750 sqft) I use it with a small fan to circulate the air to the back rooms and it makes a noticeable difference after about a hour."

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    Product Description

    Cool up to 400 square feet of space with this 10,000 BTU Honeywell portable air conditioner. This appliance utilizes environmentally friendly refrigerant for your peace of mind. Featuring three different functions, a built-in dehumidifier and LED controls, this Honeywell portable air conditioner handles your cooling needs with ease.
    $393.99
    Save $6
    Was $399.99
    Top comment

    "Great !...Not Bad...I can turn it down and direct the air so that it hits me directly while I am sleeping or turn it up so that it hits the ceiling fan and causes it to move the air through the entire room....It does a good job of cooling down my small house (750 sqft) I use it with a small fan to circulate the air to the back rooms and it makes a noticeable difference after about a hour."

    ""

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    Product Description

    Cool up to 400 square feet of space with this 10,000 BTU Honeywell portable air conditioner. This appliance utilizes environmentally friendly refrigerant for your peace of mind. Featuring three different functions, a built-in dehumidifier and LED controls, this Honeywell portable air conditioner handles your cooling needs with ease.
  2. Top comment

    "Love it...Not Bad...I can turn it down and direct the air so that it hits me directly while I am sleeping or turn it up so that it hits the ceiling fan and causes it to move the air through the entire room....It does a good job of cooling down my small house (750 sqft) I use it with a small fan to circulate the air to the back rooms and it makes a noticeable difference after about a hour."

    ""

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    Product Description

    This Honeywell MN10CES portable air conditioner offers 10,000 BTUs of cooling for temperatures ranging from 61° to 89°. Quick window-vent installation helps keep the air conditioner out of the way, and 4 casters simplify mobility.
    Top comment

    "Love it...Not Bad...I can turn it down and direct the air so that it hits me directly while I am sleeping or turn it up so that it hits the ceiling fan and causes it to move the air through the entire room....It does a good job of cooling down my small house (750 sqft) I use it with a small fan to circulate the air to the back rooms and it makes a noticeable difference after about a hour."

    ""

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    Product Description

    This Honeywell MN10CES portable air conditioner offers 10,000 BTUs of cooling for temperatures ranging from 61° to 89°. Quick window-vent installation helps keep the air conditioner out of the way, and 4 casters simplify mobility.
  3. Top comment

    "Not bad...Love it...I picked up this gem of a unit as an emergency due to my home central ac burning a compressor and needless to say a new central had to be ordered so a few days were going to go by miserably with 95+ temps....I bought two different units a 10,000 btu and this one 12,000 btu and both are good, this one is way more quiet and has an indicator when the water needs to be drained, but the 10,000 btu seems to blow air harder from the output vent."

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    Product Description

    Cool any room with the power and portability of this Honeywell HL series air conditioner. Smooth-gliding wheels let you easily move this 12,000 BTU unit from room to room. This Honeywell HL series portable air conditioner features powerful air circulation when you use the unit in its energy-saving sleep mode or set on one of the three standard speeds.
    $499.99
    Top comment

    "Not bad...Love it...I picked up this gem of a unit as an emergency due to my home central ac burning a compressor and needless to say a new central had to be ordered so a few days were going to go by miserably with 95+ temps....I bought two different units a 10,000 btu and this one 12,000 btu and both are good, this one is way more quiet and has an indicator when the water needs to be drained, but the 10,000 btu seems to blow air harder from the output vent."

    ""

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    Product Description

    Cool any room with the power and portability of this Honeywell HL series air conditioner. Smooth-gliding wheels let you easily move this 12,000 BTU unit from room to room. This Honeywell HL series portable air conditioner features powerful air circulation when you use the unit in its energy-saving sleep mode or set on one of the three standard speeds.
  4. Top comment

    "Nice ac...Love it...It is not too loud when it is running, It takes up more space in the bedroom than I would like, mostly due to the large exhaust duct on the back....I bought two different units a 10,000 btu and this one 12,000 btu and both are good, this one is way more quiet and has an indicator when the water needs to be drained, but the 10,000 btu seems to blow air harder from the output vent."

    ""

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    Product Description

    Stay cool and comfortable with this Honeywell portable air conditioner. It can cool rooms up to 550 square feet, and it has a built-in dehumidifier that keeps indoor air dry. This Honeywell portable air conditioner operates quietly, and it uses a safe refrigerant that poses no threat to the environment.
    $470.99
    Save $29
    Was $499.99
    Top comment

    "Nice ac...Love it...It is not too loud when it is running, It takes up more space in the bedroom than I would like, mostly due to the large exhaust duct on the back....I bought two different units a 10,000 btu and this one 12,000 btu and both are good, this one is way more quiet and has an indicator when the water needs to be drained, but the 10,000 btu seems to blow air harder from the output vent."

    ""

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    Product Description

    Stay cool and comfortable with this Honeywell portable air conditioner. It can cool rooms up to 550 square feet, and it has a built-in dehumidifier that keeps indoor air dry. This Honeywell portable air conditioner operates quietly, and it uses a safe refrigerant that poses no threat to the environment.
  5. Top comment

    "nice ac...Good AC...It is quiet I like the looks but it only cools about 150 sqft and has no adjustment to the air it only has one setting and only a thermostat the fan blows good it you think it is going to cool down a 300 sqft room think again... also it creates a vacuum in the room its in so make sure you seal off any window that may suck in hot air ......Also, right out of the box and even a month later, whenever I turn on the AC it smells like mold or something rotten but I have checked the filter and nothing is wrong there so I am curious on where the smell is coming from within the unit and if anyone else is having this problem"

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    Product Description

    Cool a space up to 350 sq. ft. with this 8000 BTU Frigidaire portable air conditioner. It dehumidifies the air at a rate of 2.5 pints per hour and has three fan speeds and a 24-hour on/off timer for customized operation. This Frigidaire portable air conditioner has an easy-to-use electronic control panel.
    $299.99
    Top comment

    "nice ac...Good AC...It is quiet I like the looks but it only cools about 150 sqft and has no adjustment to the air it only has one setting and only a thermostat the fan blows good it you think it is going to cool down a 300 sqft room think again... also it creates a vacuum in the room its in so make sure you seal off any window that may suck in hot air ......Also, right out of the box and even a month later, whenever I turn on the AC it smells like mold or something rotten but I have checked the filter and nothing is wrong there so I am curious on where the smell is coming from within the unit and if anyone else is having this problem"

    ""

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    Product Description

    Cool a space up to 350 sq. ft. with this 8000 BTU Frigidaire portable air conditioner. It dehumidifies the air at a rate of 2.5 pints per hour and has three fan speeds and a 24-hour on/off timer for customized operation. This Frigidaire portable air conditioner has an easy-to-use electronic control panel.
  6. Top comment

    "Good AC...Good Buy...unit works and cools room from about 84 to 70 over night but I have never seen it get below that even on all night on high and that is just in my room fan is starting to make some different noises now only had about a month but I do run it all night every night because I am a hot sleeper room is about 20 ft by 15 ft...When you run it on high while the air conditioner is fully charging rather than when it turns to fan when correct temp has been detected it can be loud for a small room but not bad at all for my living room, white noise that is totally OK."

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    Product Description

    Honeywell 12,000 BTU MN12CES Portable Air Conditioner: Control indoor temperatures with this portable air conditioner and balance a humid climate with no-drip Auto Evaporation technology. Use the simple LED power display or convenient remote control to change the cooling, dehumidifying and fan settings.
    Top comment

    "Good AC...Good Buy...unit works and cools room from about 84 to 70 over night but I have never seen it get below that even on all night on high and that is just in my room fan is starting to make some different noises now only had about a month but I do run it all night every night because I am a hot sleeper room is about 20 ft by 15 ft...When you run it on high while the air conditioner is fully charging rather than when it turns to fan when correct temp has been detected it can be loud for a small room but not bad at all for my living room, white noise that is totally OK."

    ""

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    Product Description

    Honeywell 12,000 BTU MN12CES Portable Air Conditioner: Control indoor temperatures with this portable air conditioner and balance a humid climate with no-drip Auto Evaporation technology. Use the simple LED power display or convenient remote control to change the cooling, dehumidifying and fan settings.
  7. Top comment

    "Not bad...Nice AC...This this a really good air conditioner, a little bit noise if you use it on high but is really good....I had first purchased a similar 8000 BTU from Home Depot because I couldn't find it on the Best Buy site (they list it within the square footage of the room, but not the BTUs)."

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    Product Description

    Make your home more comfortable with this 8000 BTU Frigidaire window air conditioner. Its three fan speeds and energy saver mode let you customize your cooling, while its remote control provides convenient access to temperature settings. This Frigidaire window air conditioner includes SpaceWise side panels that adjust to fit your window size.
    $239.99
    Top comment

    "Not bad...Nice AC...This this a really good air conditioner, a little bit noise if you use it on high but is really good....I had first purchased a similar 8000 BTU from Home Depot because I couldn't find it on the Best Buy site (they list it within the square footage of the room, but not the BTUs)."

    ""

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    Product Description

    Make your home more comfortable with this 8000 BTU Frigidaire window air conditioner. Its three fan speeds and energy saver mode let you customize your cooling, while its remote control provides convenient access to temperature settings. This Frigidaire window air conditioner includes SpaceWise side panels that adjust to fit your window size.
  8. Top comment

    "Love it...Good ac...i get this ac unit for my bedroom and is doing the job very good this unit is like a charm keep my room nice and cool easy to use whit the remote control and easy set up I am very happy whit my purchase and really recommend this ac unit if you looking for a one room ac unit....Two screws and everything slides into place; I recommend it as a two person job but you can honestly get through it with one if your physically able."

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    Product Description

    Lower the temperature of a small 150 sq. ft. room during summer months with this 5000 BTU Frigidaire air conditioner. Its remote control lets you adjust the thermostat and fan speeds from a distance, and its antibacterial mesh filter traps particulates. This Frigidaire air conditioner dehumidifies up to 1.6 pints per hour to keep the air feeling dry.
    $169.99
    Top comment

    "Love it...Good ac...i get this ac unit for my bedroom and is doing the job very good this unit is like a charm keep my room nice and cool easy to use whit the remote control and easy set up I am very happy whit my purchase and really recommend this ac unit if you looking for a one room ac unit....Two screws and everything slides into place; I recommend it as a two person job but you can honestly get through it with one if your physically able."

    ""

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    Product Description

    Lower the temperature of a small 150 sq. ft. room during summer months with this 5000 BTU Frigidaire air conditioner. Its remote control lets you adjust the thermostat and fan speeds from a distance, and its antibacterial mesh filter traps particulates. This Frigidaire air conditioner dehumidifies up to 1.6 pints per hour to keep the air feeling dry.
  9. Top comment

    "Love it...Not bad...Well this SPT/14,000 Btu air conditioner has been terrific so far; We've had it for about two months now, and have used it steadily almost every day without a single problem, or without having to drain the water reservoir.what a blessing....Appliance works great, I'm really happy with it, the only disappointment was when I realized it was only air conditioning and not both air conditioning and heater in one as the description stated when I purchased it."

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    Product Description

    Stay cool and comfortable this summer with this new 14,000btu portable AC unit. Features independent Dehumidifying function. Sleek design with remote and LCD panel.
    $403.99
    Save $146
    Was $549.99
    Top comment

    "Love it...Not bad...Well this SPT/14,000 Btu air conditioner has been terrific so far; We've had it for about two months now, and have used it steadily almost every day without a single problem, or without having to drain the water reservoir.what a blessing....Appliance works great, I'm really happy with it, the only disappointment was when I realized it was only air conditioning and not both air conditioning and heater in one as the description stated when I purchased it."

    ""

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    Product Description

    Stay cool and comfortable this summer with this new 14,000btu portable AC unit. Features independent Dehumidifying function. Sleek design with remote and LCD panel.
  10. Top comment

    "Love it...Good buy...It takes awhile to cool the room so I usually turn it on a half hour before I turn in....It cools off one room nicely and I like that it is also a heater and humidifier."

    ""

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    Product Description

    Cool any area in your home with this portable Honeywell HL Series air conditioner. The three-in-one technology and powerful three-speed fan let you cool and dehumidify rooms up to 350 square feet with ease. Use the remote control for this Honeywell HL Series air conditioner to change the setting from anywhere in the room.
    $378.99
    Save $21
    Was $399.99
    Top comment

    "Love it...Good buy...It takes awhile to cool the room so I usually turn it on a half hour before I turn in....It cools off one room nicely and I like that it is also a heater and humidifier."

    ""

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    Product Description

    Cool any area in your home with this portable Honeywell HL Series air conditioner. The three-in-one technology and powerful three-speed fan let you cool and dehumidify rooms up to 350 square feet with ease. Use the remote control for this Honeywell HL Series air conditioner to change the setting from anywhere in the room.
  11. Top comment

    "Love it...So great...It takes awhile to cool the room so I usually turn it on a half hour before I turn in....It cools off one room nicely and I like that it is also a heater and humidifier."

    ""

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    Product Description

    Breathe fresh air with this Honeywell HL Series portable air conditioner. This device utilizes a humidifying system that removes up 80 pints of moisture from the air throughout the day. It produces 10,000 BTUs, enough to cool 350 square feet. This Honeywell HL Series portable air conditioner features a convenient sleep mode to shut off automatically.
    $392.99
    Save $7
    Was $399.99
    Top comment

    "Love it...So great...It takes awhile to cool the room so I usually turn it on a half hour before I turn in....It cools off one room nicely and I like that it is also a heater and humidifier."

    ""

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    Product Description

    Breathe fresh air with this Honeywell HL Series portable air conditioner. This device utilizes a humidifying system that removes up 80 pints of moisture from the air throughout the day. It produces 10,000 BTUs, enough to cool 350 square feet. This Honeywell HL Series portable air conditioner features a convenient sleep mode to shut off automatically.
  12. Top comment

    "Love it...Cool AC...Sometimes on the high setting it is a little noisier than I would like it but it is what it is....This Ac is very good to have you can download apps and start it up from anywhere and it will turn on at your house I really enjoy using this love it and it's very cold nice to be in someone's home you won't regret it."

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    Product Description

    Install this 8000 BTU Frigidaire smart room air conditioner to keep the heat at bay. Its Cool Connect function is compatible with Amazon Alexa and Google Assistant, so you can turn it on and off or adjust the temperature using only your smartphone or tablet. This Frigidaire smart room air conditioner has LED lighting that creates a sleek look.
    $329.99
    Top comment

    "Love it...Cool AC...Sometimes on the high setting it is a little noisier than I would like it but it is what it is....This Ac is very good to have you can download apps and start it up from anywhere and it will turn on at your house I really enjoy using this love it and it's very cold nice to be in someone's home you won't regret it."

    ""

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    Product Description

    Install this 8000 BTU Frigidaire smart room air conditioner to keep the heat at bay. Its Cool Connect function is compatible with Amazon Alexa and Google Assistant, so you can turn it on and off or adjust the temperature using only your smartphone or tablet. This Frigidaire smart room air conditioner has LED lighting that creates a sleek look.
  13. Top comment

    "Good ac...5 stars...I have owned a few portable ac units and this one has been one of the best ones, if you read the owner's manual and follow the instructions it will perform as it should, I would recommend it for sure, the bad reviews come from people that either did not follow instructions or never owned a portable ac unit....Overall, I am very pleased with this air conditioner and can recommend it even to those who have unusually high cooling requirements."

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    Product Description

    Enjoy cool indoor temperatures with this portable Frigidaire air conditioner. It works for rooms up to 700 sq. ft., and its temperature control technology lets you maintain a preset temperature. This 14,000 BTU Frigidaire air conditioner has an antibacterial filter to reduce particulate matter, bacteria and odors and wheels for hassle-free portability.
    $519.99
    Top comment

    "Good ac...5 stars...I have owned a few portable ac units and this one has been one of the best ones, if you read the owner's manual and follow the instructions it will perform as it should, I would recommend it for sure, the bad reviews come from people that either did not follow instructions or never owned a portable ac unit....Overall, I am very pleased with this air conditioner and can recommend it even to those who have unusually high cooling requirements."

    ""

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    Product Description

    Enjoy cool indoor temperatures with this portable Frigidaire air conditioner. It works for rooms up to 700 sq. ft., and its temperature control technology lets you maintain a preset temperature. This 14,000 BTU Frigidaire air conditioner has an antibacterial filter to reduce particulate matter, bacteria and odors and wheels for hassle-free portability.
  14. Top comment

    "Good AC...not bad...Quiet, and because it is not electronic it works on the switch in the wall...set it in a high space through the wall and forget setting it again....I do a happy dance every time I turn it on because I'm so thrilled that I CAN!"

    ""

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    Product Description

    Keep your space comfortable with this Frigidaire air conditioner. Its efficient temperature control reliably maintains a preset room temperature, and the SpaceWise adjustable side panels modify its 16-inch profile to best fit your windows. This Frigidaire air conditioner's antibacterial filter minimizes room odor and airborne particles for better air quality.
    $128.99
    Save $21
    Was $149.99
    Top comment

    "Good AC...not bad...Quiet, and because it is not electronic it works on the switch in the wall...set it in a high space through the wall and forget setting it again....I do a happy dance every time I turn it on because I'm so thrilled that I CAN!"

    ""

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    Product Description

    Keep your space comfortable with this Frigidaire air conditioner. Its efficient temperature control reliably maintains a preset room temperature, and the SpaceWise adjustable side panels modify its 16-inch profile to best fit your windows. This Frigidaire air conditioner's antibacterial filter minimizes room odor and airborne particles for better air quality.
  15. Top comment

    "Good AC...Good Buy...It cools the room to 78-80 and is a handsome item, but you have to move like a snake around it as it is an extremely sensitive item....The air conditioner seems to work well, cools off one room, but since we have gotten it weather has cooled off and only used it twice so far."

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    Product Description

    Honeywell MM14CCS 14,000 BTU Portable Air Conditioner: Cool down or dehumidify with a portable air conditioner that can regulate the climate in your home or office. Help conserve energy by making use of the 24-hour programmable timer.
    $549.99
    Save $50
    Was $599.99
    Top comment

    "Good AC...Good Buy...It cools the room to 78-80 and is a handsome item, but you have to move like a snake around it as it is an extremely sensitive item....The air conditioner seems to work well, cools off one room, but since we have gotten it weather has cooled off and only used it twice so far."

    ""

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    Product Description

    Honeywell MM14CCS 14,000 BTU Portable Air Conditioner: Cool down or dehumidify with a portable air conditioner that can regulate the climate in your home or office. Help conserve energy by making use of the 24-hour programmable timer.