Best Air-conditioning Unit for Left to Right Sliding Windows in 2025
Updated on August 2025
#1
Recommended
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- 14000 BTU inverter technology ensures efficient performance with reduced noise levels.
- Energy efficiency rated at 15.0 CEER, providing 37% more efficiency than comparable models and lowering utility costs.
- Operates quietly at as low as 44 dB, recognized as the Quietest Window AC Brand in the US.
- SmartHQ app integration allows for remote monitoring, scheduling, and control, compatible with Amazon Alexa and Google Assistant, plus remote control included.
- Three fan speeds and cooling modes for adjustable comfort, including a quiet mode for nighttime use.
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- 14000 BTU inverter technology ensures efficient performance with reduced noise levels.
- Energy efficiency rated at 15.0 CEER, providing 37% more efficiency than comparable models and lowering utility costs.
- Operates quietly at as low as 44 dB, recognized as the Quietest Window AC Brand in the US.
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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
13% Off
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- 3-in-1 functionality with 12,000 BTU cooling capacity, effective for spaces up to 550 sq. ft., adjustable temperature from 62°F to 86°F, and modes for cooling, drying, and fan circulation.
- U-shaped construction minimizes noise to 45dB for a quieter environment, ideal for work and rest, while maintaining full window visibility for natural light.
- User-friendly touch panel and remote control offer access to 6 modes (Cool, Dry, Fan, Auto, Sleep, Energy Saver), with adjustable fan speeds and 4-way airflow, plus a 24-hour timer for personalized scheduling.
- Easy installation kit included for single-hung or double-hung windows with openings of 16 inches minimum, accommodating widths from 24 to 48 inches and sill heights of up to 11 inches.
- Energy-efficient operation with an annual cost of $67, features washable filter for clean air, Energy Saver and Sleep modes for reduced electricity use, promoting better indoor air quality.
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- 3-in-1 functionality with 12,000 BTU cooling capacity, effective for spaces up to 550 sq. ft., adjustable temperature from 62°F to 86°F, and modes for cooling, drying, and fan circulation.
- U-shaped construction minimizes noise to 45dB for a quieter environment, ideal for work and rest, while maintaining full window visibility for natural light.
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#4
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- Compatible with Soleus Air Exclusive Hybrid 'Saddle' Air Conditioners and suitable for horizontal sliding windows.
- Adjustable design accommodates window heights from 28.5 inches to 48 inches, ensuring a proper fit for most horizontal gliding windows.
- Simple installation with no drilling required; just attach panels and apply foam insulation for a quick setup.
- Maintains visibility and natural light, featuring high-quality plexiglass while optimizing AC efficiency.
- Complete kit includes all necessary components, eliminating the need for additional tools during installation.
- Includes a locking mechanism for added security against outside intrusion.
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- Compatible with Soleus Air Exclusive Hybrid 'Saddle' Air Conditioners and suitable for horizontal sliding windows.
- Adjustable design accommodates window heights from 28.5 inches to 48 inches, ensuring a proper fit for most horizontal gliding windows.
- Simple installation with no drilling required; just attach panels and apply foam insulation for a quick setup.
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#5
31% 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.
#6
16% Off
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- 5000 BTU mechanical window air conditioner efficiently cools rooms up to 150 sq ft, includes installation kit for quick setup
- Ideal for small spaces like bedrooms and home offices, offering 7 temperature settings, 2 cooling speeds, and adjustable air direction
- Operates quietly, quieter than a refrigerator, with easy mechanical controls for time, temperature, and mode adjustments; features a washable air filter
- Removable sliding filter allows for simple cleaning; designed to trap dust and maintain air quality
- Fits window frames 23''-34'' wide and at least 14.5'' high, includes all mounting accessories needed for installation; screwdriver required, instructions provided
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- 5000 BTU mechanical window air conditioner efficiently cools rooms up to 150 sq ft, includes installation kit for quick setup
- Ideal for small spaces like bedrooms and home offices, offering 7 temperature settings, 2 cooling speeds, and adjustable air direction
- Operates quietly, quieter than a refrigerator, with easy mechanical controls for time, temperature, and mode adjustments; features a washable air filter
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#7
23% 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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#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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- 8000 BTU cooling capacity for areas up to 550 sq.ft, ideal for medium-sized living spaces.
- 6-in-1 functionality: Cool, dehumidify, fan, energy saver, sleep, and auto mode for versatile climate control.
- Sleek U-Shape design reduces window obstruction by 80%, allowing for unobstructed views and ventilation.
- Control the unit via app, voice (Alexa/Google Assistant), touch panel or included remote for convenient management.
- Quick installation for standard 24"-36" windows with weather guard tilt system to enhance airflow and prevent rain intrusion.
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- 8000 BTU cooling capacity for areas up to 550 sq.ft, ideal for medium-sized living spaces.
- 6-in-1 functionality: Cool, dehumidify, fan, energy saver, sleep, and auto mode for versatile climate control.
- Sleek U-Shape design reduces window obstruction by 80%, allowing for unobstructed views and ventilation.
- Control the unit via app, voice (Alexa/Google Assistant), touch panel or included remote for convenient management.
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#10
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- Ultra-quiet operation with a 6,000 BTU capacity suitable for rooms up to 250 sq. ft. Three fan speeds maintain temperatures from 61°F to 88°F while efficiently removing 0.9 liters of humidity per hour.
- WiFi-enabled app and voice control compatibility allows for easy access to settings such as Fan Speed, Eco Mode, and Sleep Mode. Includes a remote control for convenience.
- Quick and straightforward installation using the included kit, fitting most standard windows without tools in under 15 minutes.
- Compact design with an 11.5 CEER rating optimizes energy efficiency, reducing costs while maintaining effective cooling.
- Comprehensive installation package includes all necessary components for setup and long-term use.
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- Ultra-quiet operation with a 6,000 BTU capacity suitable for rooms up to 250 sq. ft. Three fan speeds maintain temperatures from 61°F to 88°F while efficiently removing 0.9 liters of humidity per hour.
- WiFi-enabled app and voice control compatibility allows for easy access to settings such as Fan Speed, Eco Mode, and Sleep Mode. Includes a remote control for convenience.
- Quick and straightforward installation using the included kit, fitting most standard windows without tools in under 15 minutes.
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