Best Small Window Air Conditioner 18 Inch in 2025
Updated on June 2025
#1
Recommended
6% Off
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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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- 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.
#3
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- 3-in-1 evaporative air cooler with a water tank for enhanced cooling and an ice box for extra chill.
- Uses advanced cooling technology with high-performance motor and cooling pads, reducing temperatures by 5.4–16.2°F while consuming 65W of power.
- Portable and easy to use, requiring no installation; lightweight design with built-in handle and swivel casters for mobility.
- Large 2-gallon water tank allows for up to 20 hours of continuous cooling; automatically switches to fan mode when water is low.
- Remote control operation with a range of 16 feet; intuitive control panels for nighttime ease of use.
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- 3-in-1 evaporative air cooler with a water tank for enhanced cooling and an ice box for extra chill.
- Uses advanced cooling technology with high-performance motor and cooling pads, reducing temperatures by 5.4–16.2°F while consuming 65W of power.
- Portable and easy to use, requiring no installation; lightweight design with built-in handle and swivel casters for mobility.
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#4
8% Off
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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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#5
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- 6000 BTU air conditioner designed for effective cooling in rooms up to 250 square feet, suitable for various room types and can function as a dehumidifier.
- Multiple modes available: COOL for air conditioning, DRY for dehumidifying, and FAN for air circulation, with additional features such as a 24-hour timer and Eco mode.
- Operates at four cooling levels (auto, low, medium, high) with a temperature range of 61°F to 88°F; includes remote control and digital display for adjustments.
- Compact window-mounted design fitting windows between 23 - 36 inches wide and at least 14.5 inches high, with adjustable side panels for air leakage prevention.
- Reusable, washable filter for optimal performance; regular cleaning is recommended.
- Operates quietly at 50 to 55 dB, suitable for use in quiet environments like bedrooms or offices.
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- 6000 BTU air conditioner designed for effective cooling in rooms up to 250 square feet, suitable for various room types and can function as a dehumidifier.
- Multiple modes available: COOL for air conditioning, DRY for dehumidifying, and FAN for air circulation, with additional features such as a 24-hour timer and Eco mode.
- Operates at four cooling levels (auto, low, medium, high) with a temperature range of 61°F to 88°F; includes remote control and digital display for adjustments.
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#6
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- 10,000 BTU cooling capacity effectively cools spaces up to 450 sq. ft., maintaining a temperature range of 62℉ to 86℉.
- Features a 24-hour timer and sleep mode for quiet operation, allowing for personalized cooling and energy efficiency during the night.
- Equipped with an upgraded three-piece window sealing kit for easier installation, accommodating various window sizes without the need for cutting.
- Digital control panel and compact remote make it easy to adjust settings such as mode, temperature, and fan speed from a distance.
- Combines air conditioning, dehumidifying, and fan functions, with both manual and automatic drainage options for enhanced convenience.
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- 10,000 BTU cooling capacity effectively cools spaces up to 450 sq. ft., maintaining a temperature range of 62℉ to 86℉.
- Features a 24-hour timer and sleep mode for quiet operation, allowing for personalized cooling and energy efficiency during the night.
- Equipped with an upgraded three-piece window sealing kit for easier installation, accommodating various window sizes without the need for cutting.
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#7
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- Advanced inverter technology reduces energy consumption by up to 37.6% compared to traditional units.
- Inverter system provides quiet operation and accurate temperature control for consistent cooling.
- Meets ENERGY STAR standards for high efficiency, aiding in reduced energy costs.
- Quick installation with an easy-to-use window kit; no professional assistance needed.
- Remote control and app compatibility for convenient operation.
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- Advanced inverter technology reduces energy consumption by up to 37.6% compared to traditional units.
- Inverter system provides quiet operation and accurate temperature control for consistent cooling.
- Meets ENERGY STAR standards for high efficiency, aiding in reduced energy costs.
- Quick installation with an easy-to-use window kit; no professional assistance needed.
- Remote control and app compatibility for convenient operation.
#8
27% Off
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- Cooling capacity of 16,000 BTU, suitable for spaces up to 730 sq.ft, maintaining temperatures between 61°F and 88°F.
- 5-in-1 functionality includes cooling, fan, sleep, and dehumidification modes for versatile climate control.
- Remote control via app for scheduling, energy monitoring, and filter alerts allows easy integration into smart homes.
- Portable design with 360° wheels and handles for easy mobility; includes various window panel options for installation.
- Quiet operation under 45 dB in sleep mode, with energy-saving features and adjustable timer for efficient use.
- Self-evaporating system requires no manual drainage, automating water removal during operation.
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- Cooling capacity of 16,000 BTU, suitable for spaces up to 730 sq.ft, maintaining temperatures between 61°F and 88°F.
- 5-in-1 functionality includes cooling, fan, sleep, and dehumidification modes for versatile climate control.
- Remote control via app for scheduling, energy monitoring, and filter alerts allows easy integration into smart homes.
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#9
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- Quiet operation at as low as 53dB for a comfortable environment
- Three adjustable fan speeds and an Auto Cool mode for customized cooling
- User-friendly electronic controls and remote for effortless operation
- Auto Restart functionality automatically resumes cooling after power outages
- Efficiently cools medium-sized rooms up to 350 sq. ft.
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- Quiet operation at as low as 53dB for a comfortable environment
- Three adjustable fan speeds and an Auto Cool mode for customized cooling
- User-friendly electronic controls and remote for effortless operation
- Auto Restart functionality automatically resumes cooling after power outages
- Efficiently cools medium-sized rooms up to 350 sq. ft.
#10
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- Cools rooms up to 350 sq ft effectively with a straightforward installation kit included.
- Ideal for medium-sized spaces, providing quiet 8000 BTU cooling for areas like living and family rooms.
- SmartHQ app integration allows for remote control, scheduling, and monitoring; compatible with Amazon Alexa and Google Assistant; includes a remote control for convenience.
- Eco Mode helps save energy by automatically turning off the fan and compressor when the room reaches a certain temperature; features 3 cooling modes and 3 fan speeds for customizable comfort.
- Designed for easy installation in double-hung windows and features a slide-out, washable filter for simple maintenance.
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- Cools rooms up to 350 sq ft effectively with a straightforward installation kit included.
- Ideal for medium-sized spaces, providing quiet 8000 BTU cooling for areas like living and family rooms.
- SmartHQ app integration allows for remote control, scheduling, and monitoring; compatible with Amazon Alexa and Google Assistant; includes a remote control for convenience.
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