Best Quietest Thru Wall Air Conditioner12000 BTU in 2025
Updated on June 2025
#1
Recommended
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- Designed for quiet operation, featuring superior components that reduce noise by up to 25% compared to competitors.
- Energy-efficient technology operates the fan only when cooling, contributing to both cost savings and environmental protection.
- Offers three cooling speeds and fan-only options, with 8-way airflow control for optimal comfort; automatically restarts after power interruptions.
- Packaged in recyclable materials, reflecting a commitment to environmentally friendly cooling solutions.
- Compatible with 24 1/2, 26, and 27-inch sleeves, including a decorative trim ring to ensure a neat installation and fill gaps.
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- Designed for quiet operation, featuring superior components that reduce noise by up to 25% compared to competitors.
- Energy-efficient technology operates the fan only when cooling, contributing to both cost savings and environmental protection.
- Offers three cooling speeds and fan-only options, with 8-way airflow control for optimal comfort; automatically restarts after power interruptions.
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#2
Value for Money
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- 12,000 BTU through-wall air conditioner efficiently cools small to medium living spaces up to 550 sq. ft.
- Offers 3 cooling modes, 3 fan speeds, and a built-in dehumidification system that removes 2.5 pints of moisture per hour.
- Designed for space-saving with easy installation using standard universal interior trim kit.
- Smart remote measures room temperature and communicates with the unit every 3 minutes for precise cooling.
- Energy-efficient features like 'Energy Saver' and 'Sleep' mode help reduce electricity costs while maintaining comfort.
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- 12,000 BTU through-wall air conditioner efficiently cools small to medium living spaces up to 550 sq. ft.
- Offers 3 cooling modes, 3 fan speeds, and a built-in dehumidification system that removes 2.5 pints of moisture per hour.
- Designed for space-saving with easy installation using standard universal interior trim kit.
- Smart remote measures room temperature and communicates with the unit every 3 minutes for precise cooling.
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#3
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- 18,000 BTU capacity efficiently cools rooms with four operating modes: auto, low, medium, and high.
- Designed for spaces up to 1,000 square feet, ideal for larger rooms and open areas.
- Includes a user-friendly remote control for adjusting settings, with features like sleep mode and a 24-hour timer.
- Simple accordion-style installation fits standard double-hung windows from 28" to 40.5" wide and a minimum height of 18.5".
- Wall sleeve and components provided for through-the-wall installation, which should be done by a licensed professional.
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- 18,000 BTU capacity efficiently cools rooms with four operating modes: auto, low, medium, and high.
- Designed for spaces up to 1,000 square feet, ideal for larger rooms and open areas.
- Includes a user-friendly remote control for adjusting settings, with features like sleep mode and a 24-hour timer.
- Simple accordion-style installation fits standard double-hung windows from 28" to 40.5" wide and a minimum height of 18.5".
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#4
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- Olmo Through-the-wall air conditioner with 12,000 BTU/h cooling capacity, ideal for various settings including residential and commercial use.
- Operates on 115V, 1Ph, 60Hz and uses R-32 refrigerant; ensure compatibility with your electrical outlet before ordering.
- Includes wall sleeve for easy installation.
- Can be controlled via a digital push button control panel with LED display, remote controller, or a compatible smartphone app.
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- Olmo Through-the-wall air conditioner with 12,000 BTU/h cooling capacity, ideal for various settings including residential and commercial use.
- Operates on 115V, 1Ph, 60Hz and uses R-32 refrigerant; ensure compatibility with your electrical outlet before ordering.
- Includes wall sleeve for easy installation.
- Can be controlled via a digital push button control panel with LED display, remote controller, or a compatible smartphone app.
#5
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- Cools areas up to 550 sq ft with a 12,000 BTU capacity, suitable for medium-sized rooms like living rooms, bedrooms, or offices.
- Features a built-in dehumidifier that improves air quality by reducing humidity and preventing odors.
- Compatible with smart home systems such as Amazon Alexa and Google Assistant for voice-activated control.
- Designed to fit wall sleeves with dimensions of 26”x20”x15.57” (sleeve not included).
- Room coverage may vary due to factors like ceiling height, window count, and overall room configuration.
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- Cools areas up to 550 sq ft with a 12,000 BTU capacity, suitable for medium-sized rooms like living rooms, bedrooms, or offices.
- Features a built-in dehumidifier that improves air quality by reducing humidity and preventing odors.
- Compatible with smart home systems such as Amazon Alexa and Google Assistant for voice-activated control.
- Designed to fit wall sleeves with dimensions of 26”x20”x15.57” (sleeve not included).
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#6
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- 18,000 BTU cooling capacity and 16,000 BTU heating capacity for large spaces up to 1,000 sq. ft.
- Multi-functional unit offering cooling, supplemental heating, dehumidification, and fan modes; supplementary heating designed for outdoor temperatures between 23°F and 76°F.
- Smart remote monitors room temperature and communicates with the air conditioner every 3 minutes for precise climate control.
- Energy-efficient operation with 'Energy Saver' and 'Sleep' modes reduces electricity costs.
- Compact design with included window installation kit saves floor space.
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- 18,000 BTU cooling capacity and 16,000 BTU heating capacity for large spaces up to 1,000 sq. ft.
- Multi-functional unit offering cooling, supplemental heating, dehumidification, and fan modes; supplementary heating designed for outdoor temperatures between 23°F and 76°F.
- Smart remote monitors room temperature and communicates with the air conditioner every 3 minutes for precise climate control.
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#7
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- Olmo Through-the-wall air conditioner with a 12,000 BTU/h cooling capacity, suitable for residential, commercial, and hotel applications.
- Operates on 115V, 1Ph, 60Hz, and uses R-32 refrigerant; ensure compatibility with your receptacle before ordering.
- Wall sleeve sold separately and not included in the package.
- Features a standard digital control panel with LED display, remote control, and compatibility with wireless smartphone devices.
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- Olmo Through-the-wall air conditioner with a 12,000 BTU/h cooling capacity, suitable for residential, commercial, and hotel applications.
- Operates on 115V, 1Ph, 60Hz, and uses R-32 refrigerant; ensure compatibility with your receptacle before ordering.
- Wall sleeve sold separately and not included in the package.
- Features a standard digital control panel with LED display, remote control, and compatibility with wireless smartphone devices.
#8
11% Off
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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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#9
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- Three adjustable fan speeds for customized cooling
- Built-in air ionizer reduces airborne particles for improved air quality
- Washable dust filter for easy maintenance and improved efficiency
- Remote control for convenient temperature management
- 24-hour programmable timer for pre-setting temperature control
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- Three adjustable fan speeds for customized cooling
- Built-in air ionizer reduces airborne particles for improved air quality
- Washable dust filter for easy maintenance and improved efficiency
- Remote control for convenient temperature management
- 24-hour programmable timer for pre-setting temperature control
#10
15% Off
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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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