Best Most Energy Efficient Air Conditioner in 2025
Updated on June 2025
#1
Recommended
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- Maintains preset room temperatures for all-day comfort
- Features a washable filter that effectively captures dust, enhancing efficiency
- Includes a long power cord, eliminating the need for extension cords
- Automatically resumes previous settings after a power outage
- Suitable for installation in standard double-hung windows with widths ranging from 24 to 36 inches
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- Maintains preset room temperatures for all-day comfort
- Features a washable filter that effectively captures dust, enhancing efficiency
- Includes a long power cord, eliminating the need for extension cords
- Automatically resumes previous settings after a power outage
- Suitable for installation in standard double-hung windows with widths ranging from 24 to 36 inches
#2
Value for Money
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- Ideal for cooling smaller spaces up to 150 sq. ft. with multiple temperature settings, cooling modes, and adjustable air direction.
- Energy-efficient operation with a Combined Energy Efficiency Rate (CEER) of 11.0, designed to lower energy costs.
- Operates quietly, comparable to a household refrigerator, and comes with user-friendly mechanical controls and a washable air filter.
- Simple installation process compatible with windows measuring 23''-36'' wide and at least 13'' high, with all necessary mounting accessories included.
- Includes a 1 Year Parts & Labor Warranty for assurance, with customer support available for any inquiries.
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- Ideal for cooling smaller spaces up to 150 sq. ft. with multiple temperature settings, cooling modes, and adjustable air direction.
- Energy-efficient operation with a Combined Energy Efficiency Rate (CEER) of 11.0, designed to lower energy costs.
- Operates quietly, comparable to a household refrigerator, and comes with user-friendly mechanical controls and a washable air filter.
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#3
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- Efficiently cools rooms up to 150 sq ft with 5000 BTU capacity.
- Ideal for smaller spaces such as bedrooms, studios, and home offices.
- Operates quietly, making it suitable for nighttime use.
- Offers 2 cooling modes and 2 fan speeds with 10 temperature settings for personalized comfort.
- Simple installation in double hung windows with included EZ Mount kit.
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- Efficiently cools rooms up to 150 sq ft with 5000 BTU capacity.
- Ideal for smaller spaces such as bedrooms, studios, and home offices.
- Operates quietly, making it suitable for nighttime use.
- Offers 2 cooling modes and 2 fan speeds with 10 temperature settings for personalized comfort.
- Simple installation in double hung windows with included EZ Mount kit.
#4
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- Operates quietly at sound levels as low as 52dB, ensuring minimal disruption during use.
- Offers 3 adjustable cooling and fan speeds for personalized comfort.
- Features a user-friendly digital control panel, remote control, and a slide-out washable filter for easy maintenance.
- Automatically restarts after power outages, providing convenience without manual intervention.
- Designed to efficiently cool spaces up to 250 square feet, suitable for medium-sized rooms.
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- Operates quietly at sound levels as low as 52dB, ensuring minimal disruption during use.
- Offers 3 adjustable cooling and fan speeds for personalized comfort.
- Features a user-friendly digital control panel, remote control, and a slide-out washable filter for easy maintenance.
- Automatically restarts after power outages, providing convenience without manual intervention.
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#5
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- Dual Inverter technology enables quiet operation at sound levels as low as 44dB in sleep mode.
- Up to 25% more energy efficient than Energy Star certification, contributing to lower energy costs.
- LG ThinQ Technology allows remote control of the air conditioner via mobile app or voice commands through Amazon Alexa and Google Assistant.
- Features 4 cooling and fan speeds with an Auto Cool option, customizable through a digital control panel, remote, or voice activation.
- Suitable for cooling medium-sized rooms up to 400 square feet, making it ideal for 15' x 30' spaces.
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- Dual Inverter technology enables quiet operation at sound levels as low as 44dB in sleep mode.
- Up to 25% more energy efficient than Energy Star certification, contributing to lower energy costs.
- LG ThinQ Technology allows remote control of the air conditioner via mobile app or voice commands through Amazon Alexa and Google Assistant.
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#6
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- Personal air conditioner suitable for rooms up to 350 sq. ft. with compact dimensions of 15.3" x 14" x 24.8".
- Functions as an air conditioner, dehumidifier, and fan, featuring 4,100 BTU (DOE) cooling capacity and a lightweight design at 45.8 lbs.
- Equipped with a washable filter, auto water evaporation, and a 24-hour programmable timer for convenient use.
- Designed for easy mobility with built-in casters and side handles for seamless transportation between rooms.
- Includes installation kit with a window kit for straightforward setup and effective cooling.
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- Personal air conditioner suitable for rooms up to 350 sq. ft. with compact dimensions of 15.3" x 14" x 24.8".
- Functions as an air conditioner, dehumidifier, and fan, featuring 4,100 BTU (DOE) cooling capacity and a lightweight design at 45.8 lbs.
- Equipped with a washable filter, auto water evaporation, and a 24-hour programmable timer for convenient use.
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#7
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- Three-in-one functionality: Cools, dehumidifies, and circulates air in spaces up to 150 sq. ft.
- Operates quietly at 52dB in low mode; includes intuitive LED display and remote control for convenient operation.
- Simple installation with all necessary mounting accessories included; screwdriver needed for setup.
- Backed by a one-year parts and labor warranty, showcasing a commitment to quality.
- Energy-efficient design with custom settings, including Eco mode and EasyTimer for personalized scheduling.
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- Three-in-one functionality: Cools, dehumidifies, and circulates air in spaces up to 150 sq. ft.
- Operates quietly at 52dB in low mode; includes intuitive LED display and remote control for convenient operation.
- Simple installation with all necessary mounting accessories included; screwdriver needed for setup.
- Backed by a one-year parts and labor warranty, showcasing a commitment to quality.
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#8
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- Multi-season functionality with powerful cooling and supplemental heat for rooms up to 550 sq. ft.; heat pump function ineffective below 41°F.
- User-friendly with LED display, 5 modes, 3 speed settings, and a 24-hr timer. Operate via control panel, remote, SmartHome app, or voice with Alexa/Google Assistant.
- Energy-efficient unit certified by Energy Star; features variable-speed inverter technology for up to 35% energy savings, offering 12,000 BTUs and easy maintenance with a washable filter.
- Quiet operation at 45 dBA, ideal for uninterrupted activities like meetings or TV watching while providing a soothing background noise.
- Designed for double hung windows (24-38.5 inches wide); measures 19.41"W x 22.17"D x 13.9"H. Comes with remote control and installation kit.
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- Multi-season functionality with powerful cooling and supplemental heat for rooms up to 550 sq. ft.; heat pump function ineffective below 41°F.
- User-friendly with LED display, 5 modes, 3 speed settings, and a 24-hr timer. Operate via control panel, remote, SmartHome app, or voice with Alexa/Google Assistant.
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#9
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- 14000 BTU cooling capacity for spaces up to 700 sq. ft., operating between 61F to 86F.
- 3-in-1 functionality: cooling, fan, and dehumidifying modes with a capacity of 95 pints per day.
- User-friendly LED display and remote control with a range of up to 23 feet for easy adjustments.
- Self-evaporation system reduces need for manual draining, with drainage options for high humidity.
- Smart and Sleep Modes for temperature adjustment and energy efficiency, with a 24-hour timer.
- Easy to move and install with 360-degree wheels and included window kits.
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- 14000 BTU cooling capacity for spaces up to 700 sq. ft., operating between 61F to 86F.
- 3-in-1 functionality: cooling, fan, and dehumidifying modes with a capacity of 95 pints per day.
- User-friendly LED display and remote control with a range of up to 23 feet for easy adjustments.
- Self-evaporation system reduces need for manual draining, with drainage options for high humidity.
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#10
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- Efficiently cools rooms up to 550 sq ft with included installation kit for quick setup.
- 12000 BTU cooling capacity suitable for medium-sized areas like living rooms.
- SmartHQ app integration for remote monitoring and control, compatible with Amazon Alexa and Google Assistant.
- Eco Mode conserves energy by turning off fan and compressor when the room reaches the desired temperature; features 3 cooling modes and fan speeds for optimal comfort.
- Easy installation with fixed chassis for double hung windows; washable filter simplifies maintenance.
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- Efficiently cools rooms up to 550 sq ft with included installation kit for quick setup.
- 12000 BTU cooling capacity suitable for medium-sized areas like living rooms.
- SmartHQ app integration for remote monitoring and control, compatible with Amazon Alexa and Google Assistant.
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