Best 18 Inch Window AC Unit in 2025
Updated on June 2025
#1
Recommended
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- 8000 BTU window air conditioner and heat unit designed for large rooms up to 350 square feet, offering both cooling and supplemental heating capabilities.
- User-friendly with LED display, multiple function modes (Heat, Auto, Cool, Dry, Fan), adjustable airflow louvers, and smart home integration via the SmartHome App, Alexa, and Google Assistant.
- Energy Star certified for efficiency, featuring variable-speed inverter technology that reduces electricity usage by up to 35% and includes a washable filter for easy maintenance.
- Operates at a quiet noise level of 45 dBA, suitable for work, relaxation, and sleep, while providing beneficial white noise.
- Fits double hung windows with openings between 24 to 38.5 inches; includes installation kit and measures 19.41"W x 22.17"D x 13.9"H.
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- 8000 BTU window air conditioner and heat unit designed for large rooms up to 350 square feet, offering both cooling and supplemental heating capabilities.
- User-friendly with LED display, multiple function modes (Heat, Auto, Cool, Dry, Fan), adjustable airflow louvers, and smart home integration via the SmartHome App, Alexa, and Google Assistant.
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#2
Value for Money
9% Off
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- Reduces noise to 45dB by keeping the compressor outside, allowing for full window views and natural light.
- Rapidly cools spaces up to 550 sq. ft. with a temperature range of 62°F to 86°F and features six modes and three fan speeds.
- Easy installation with no need for brackets, fits windows 24" to 48" wide with a minimum opening of 16".
- Offers cooling, dehumidifying, and fan modes for year-round use, providing comfort in various weather conditions.
- Energy-efficient with annual costs of $67, featuring timer, Energy Saver, and Sleep modes, easily controlled by touch panel or remote.
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- Reduces noise to 45dB by keeping the compressor outside, allowing for full window views and natural light.
- Rapidly cools spaces up to 550 sq. ft. with a temperature range of 62°F to 86°F and features six modes and three fan speeds.
- Easy installation with no need for brackets, fits windows 24" to 48" wide with a minimum opening of 16".
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#3
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
#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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- 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.
#6
13% Off
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- Features 7 adjustable temperature settings for personalized cooling, from maximum airflow to energy-efficient mild breezes.
- Includes a washable filter for maintaining clean air; monthly checks and easy cleaning help optimize performance and extend the unit's lifespan.
- Automatically restarts after power outages with a built-in safety time delay, ensuring comfort without manual reset and protecting internal components.
- Designed for easy installation in double-hung windows between 23" and 34" wide; can fit narrower openings without accordion panels and requires a minimum vertical clearance of 14.5".
- Equipped with adjustable directional louvers and dual speed settings for customizable airflow, allowing targeted cooling or gentle circulation as needed.
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- Features 7 adjustable temperature settings for personalized cooling, from maximum airflow to energy-efficient mild breezes.
- Includes a washable filter for maintaining clean air; monthly checks and easy cleaning help optimize performance and extend the unit's lifespan.
- Automatically restarts after power outages with a built-in safety time delay, ensuring comfort without manual reset and protecting internal components.
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#7
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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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#8
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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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#9
15% Off
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- Cools and dehumidifies rooms up to 150 sq. ft., ideal for compact spaces.
- Equipped with a removable and washable filter for easy maintenance.
- Offers 7 temperature settings and adjustable air direction.
- Designed to fit standard windows with adjustable side panels for easy installation.
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- Cools and dehumidifies rooms up to 150 sq. ft., ideal for compact spaces.
- Equipped with a removable and washable filter for easy maintenance.
- Offers 7 temperature settings and adjustable air direction.
- Designed to fit standard windows with adjustable side panels for easy installation.
#10
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- Cooling coverage suitable for rooms up to 250 square feet with a 6,000 BTU capacity.
- User-friendly control panel and remote allow for easy temperature and fan speed adjustments.
- Fixed chassis design facilitates easy installation in double-hung windows with included kit; slide-out filter simplifies maintenance.
- Washable dust filter helps maintain efficient operation by capturing airborne dust.
- Additional features include a remote control, installation kit, washable filter, filter replacement alert, and eco-friendly refrigerant.
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- Cooling coverage suitable for rooms up to 250 square feet with a 6,000 BTU capacity.
- User-friendly control panel and remote allow for easy temperature and fan speed adjustments.
- Fixed chassis design facilitates easy installation in double-hung windows with included kit; slide-out filter simplifies maintenance.
- Washable dust filter helps maintain efficient operation by capturing airborne dust.
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