Best Air-conditioning Unit for Left to Right Sliding Windows in 2025
Updated on June 2025
#1
Recommended
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- Temperature settings adjustable between 62°F and 86°F (17°C - 30°C) for customizable cooling
- Expandable window mounting kit suitable for horizontal sliding or crank-out casement windows, fitting window widths of 15½” to 16¼” and heights of 21¼” to 39½”
- Three fan and cooling speeds available
- Remote control included with Follow Me portable thermostat for improved room cooling efficiency
- Front-mounted air filter that tilts out for easy cleaning access
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- Temperature settings adjustable between 62°F and 86°F (17°C - 30°C) for customizable cooling
- Expandable window mounting kit suitable for horizontal sliding or crank-out casement windows, fitting window widths of 15½” to 16¼” and heights of 21¼” to 39½”
- Three fan and cooling speeds available
- Remote control included with Follow Me portable thermostat for improved room cooling efficiency
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#2
Value for Money
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- Inverter technology enables the air conditioner to operate at varying levels for reduced noise and enhanced energy efficiency.
- A CEER rating of 15.0 offers significantly improved energy efficiency, potentially lowering your utility bills while maintaining performance.
- Operates at a low sound level of 44 dB, recognized as the Quietest Window AC Brand in the US.
- SmartHQ app integration allows for remote monitoring and control, compatible with devices like Amazon Alexa and Google Assistant, or use the included remote control for easy operation.
- Three fan speeds and cooling modes provide flexibility for optimal comfort and efficiency, with a quiet mode option for nighttime use.
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- Inverter technology enables the air conditioner to operate at varying levels for reduced noise and enhanced energy efficiency.
- A CEER rating of 15.0 offers significantly improved energy efficiency, potentially lowering your utility bills while maintaining performance.
- Operates at a low sound level of 44 dB, recognized as the Quietest Window AC Brand in the US.
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#3
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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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#4
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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#5
14% Off
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- Low noise operation at 45dB ensures a peaceful environment without obstructing views.
- The 12,000 BTU cooling capacity efficiently cools spaces up to 550 sq. ft. with a temperature range of 62°F to 86°F.
- Versatile 3-in-1 functionality includes cooling, drying, and fan modes for year-round climate control.
- Easy installation fits various window sizes, with no additional support needed and a washable filter for easy maintenance.
- User-friendly controls with a remote and energy-efficient settings help save on utility costs.
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- Low noise operation at 45dB ensures a peaceful environment without obstructing views.
- The 12,000 BTU cooling capacity efficiently cools spaces up to 550 sq. ft. with a temperature range of 62°F to 86°F.
- Versatile 3-in-1 functionality includes cooling, drying, and fan modes for year-round climate control.
- Easy installation fits various window sizes, with no additional support needed and a washable filter for easy maintenance.
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#6
18% Off
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- 12,000 BTU with 3 cooling and fan speeds for personalized comfort; includes a 24-hour timer and 4-way air deflection
- Remote control capability via LG ThinQ Technology; compatible with Alexa and Google Assistant for voice commands
- Operates quietly at 52dB in low mode for a comfortable environment
- Auto Restart feature restores operation automatically after power interruptions
- Efficiently cools spaces up to 550 square feet, suitable for large rooms like kitchens and living areas
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- 12,000 BTU with 3 cooling and fan speeds for personalized comfort; includes a 24-hour timer and 4-way air deflection
- Remote control capability via LG ThinQ Technology; compatible with Alexa and Google Assistant for voice commands
- Operates quietly at 52dB in low mode for a comfortable environment
- Auto Restart feature restores operation automatically after power interruptions
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#7
11% Off
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- U-shape design optimizes window space, providing clear views and easy removal when not in use.
- Offers 6 operational modes: Cool, Dry, Fan, Auto, Sleep, and Energy Saver with adjustable temperatures from 62℉ to 86℉.
- Cooling capacity of 10,000 BTU efficiently covers areas up to 450 sq. ft., suitable for various living spaces and easily controlled via an LCD panel or remote.
- Features a mytemp sensor for automatic shut-off at desired temperature, operates quietly under 41db, and includes energy-saving modes and a programmable timer.
- Easy installation requires no mounting brackets, fitting window widths of 24 to 48 inches and minimum height clearance of 16 inches, with a maximum sill clearance of 11 inches.
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- U-shape design optimizes window space, providing clear views and easy removal when not in use.
- Offers 6 operational modes: Cool, Dry, Fan, Auto, Sleep, and Energy Saver with adjustable temperatures from 62℉ to 86℉.
- Cooling capacity of 10,000 BTU efficiently covers areas up to 450 sq. ft., suitable for various living spaces and easily controlled via an LCD panel or remote.
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#8
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- 12,000 BTU cooling capacity suitable for spaces up to 550 sq. ft., offering four cooling levels (Auto, Low, Medium, High) and temperature settings from 61°F to 86°F.
- Three modes available: Cooling, Dehumidifying, and Fan, along with a 24-hour timer and energy-saving features to enhance comfort and reduce humidity.
- Designed for window sizes between 24 to 48 inches with adjustable side panels for easy installation and minimal air leakage.
- Operates quietly at 50 dB, equipped with a remote control, digital display, and adjustable thermostat for user convenience.
- Features a washable filter that can be cleaned easily, ensuring efficient airflow and cooling while being energy-efficient.
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- 12,000 BTU cooling capacity suitable for spaces up to 550 sq. ft., offering four cooling levels (Auto, Low, Medium, High) and temperature settings from 61°F to 86°F.
- Three modes available: Cooling, Dehumidifying, and Fan, along with a 24-hour timer and energy-saving features to enhance comfort and reduce humidity.
- Designed for window sizes between 24 to 48 inches with adjustable side panels for easy installation and minimal air leakage.
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#9
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- Cools large areas up to 350 square feet effectively, ideal for various rooms like bedrooms and living spaces.
- High CEER of 10.9 for energy-efficient operation, helping to lower electricity bills while maintaining performance.
- Versatile temperature control from 61°F to 88°F with multiple modes: cooling, dehumidifying, fan, and more, including a timer and speed settings for personalized comfort.
- Operates quietly at 54dB in sleep mode, promoting restful sleep in a cool environment.
- User-friendly setup with an LED display, remote control, and detailed installation manual, fitting windows from 23 to 36 inches wide.
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- Cools large areas up to 350 square feet effectively, ideal for various rooms like bedrooms and living spaces.
- High CEER of 10.9 for energy-efficient operation, helping to lower electricity bills while maintaining performance.
- Versatile temperature control from 61°F to 88°F with multiple modes: cooling, dehumidifying, fan, and more, including a timer and speed settings for personalized comfort.
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#10
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- 14,500 BTU cooling capacity suitable for rooms up to 700 square feet.
- Compact dimensions (21.5" x 19" x 14.6") ideal for bedrooms and small spaces.
- Equipped with a remote control and digital LED display for easy temperature adjustments and 24-hour timer settings.
- Installation is straightforward, requiring only a screwdriver for the top rail attachment.
- Utilizes eco-friendly R32 refrigerant, enhancing efficiency while being ozone layer friendly.
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- 14,500 BTU cooling capacity suitable for rooms up to 700 square feet.
- Compact dimensions (21.5" x 19" x 14.6") ideal for bedrooms and small spaces.
- Equipped with a remote control and digital LED display for easy temperature adjustments and 24-hour timer settings.
- Installation is straightforward, requiring only a screwdriver for the top rail attachment.
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