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5 Best Quietest Window Air Conditioners For Your Home

Engineered with advanced technology, quietest window air conditioner units provide optimal temperature control while minimizing noise. Ideal for bedrooms, offices, and any area where peace and comfort are paramount. With sleek designs and user-friendly features, they offer a discreet yet powerful way to beat the heat, ensuring a tranquil environment without compromising on performance. 

Here are Few Key Features to Consider:

  • Noise Level: It’s important to consider how much noise a window air conditioner makes, as it can affect your comfort. Many window air conditioners are designed to be quiet, typically producing less than 60 dB of noise, which is about as loud as a normal conversation or moderate rain. This helps keep your space peaceful.
  • BTU (Cooling Power): The cooling efficiency of a window air conditioner is also crucial. The term “BTU” stands for British Thermal Unit and measures the unit’s cooling capacity. Most window air conditioners have a BTU range of 5,000 to 8,000, suitable for effective cooling performance. The right BTU rating depends on various factors, including room size.
  • Room Size: Choosing the correct window air conditioner size for your room ensures efficient cooling. The unit should be capable of reaching every corner of the room. There’s a direct relationship between the room size and the BTU rating needed. Window air conditioners are generally designed for rooms ranging from 150 to 350 square feet, ensuring a comfortable environment in spaces of these sizes.

This article presents key factors influencing window air conditioner selection, featuring the quietest models and a helpful “Buying Guide”.

Best Quietest Window Air Conditioner Table

Best Quietest Window Air ConditionerNoise level (dB)BTURoom sizeBuy Now
Frigidaire Quietest Window AC525000150 sq. ftCheck On Amazon
LG Quietest Window AC526000250 sq. ftCheck On Amazon
Midea Quietest Window AC4210,000450 sq.ftCheck On Amazon
Keystone Quietest Window AC495000150 sq. ftCheck On Amazon
Windmill Quietest Window AC508000350 sq. ftCheck On Amazon
Haier Quietest Window AC506000250 sq. ftCheck On Amazon

Best Quietest Window Air Conditioner Reviews

1. Frigidaire Quietest Window AC

Frigidaire Quietest Window AC

The Frigidaire air conditioner combines affordability with functionality, making it an excellent choice for small rooms. This unit is designed to maintain a preset room temperature, ensuring your comfort throughout its use. Its easy-to-install feature, complemented by the SpaceWise Adjustable Design and optional side panels, allows for a perfect fit in your window, enhancing its efficiency and the overall aesthetics of your space. The easy-to-clean washable filter captures dust and ensures the unit operates effectively, contributing to a healthier indoor environment.

Frigidaire has emphasized user convenience with features like the Effortless Restart, which automatically resumes the unit’s previous settings after a power outage, and an extra-long power cord that eliminates the need for extension cords. Though designed for simplicity, this air conditioner does not compromise on performance, offering a cool and comfortable atmosphere even during the peak of summer.


  • Brand: Frigidaire
  • Cooling Power: 5000 BTU
  • Special Feature: Dust Filter, Adjustable Side Panels
  • Product Dimensions: 15.25″D x 16″W x 12″H
  • SEER: 11
  • Voltage: 115
  • Noise Level: 52 dB
  • Refrigerant: R-32
  • Controller Type: Button Control
  • Air Flow Efficiency: 136 CFM


  • Easy to install and fits perfectly in small windows.
  • Maintains preset room temperature for continuous comfort.
  • Washable filter makes maintenance simple and cost-effective.
  • Extra long power cord enhances convenience and safety.


  • Noise level may be higher than expected for some users.

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2. LG Quietest Window AC

LG Quietest Window AC

The LG window air conditioner is a testament to modern cooling technology, designed to efficiently cool spaces up to 250 square feet. It distinguishes itself with its quiet operation, maintaining a noise level as low as 52 dB, which is comparable to the sound of a quiet suburban area. This feature ensures your daily activities or sleep are undisturbed while you stay cool and comfortable. The inclusion of multiple fan speeds and cooling speeds provides customization to meet your specific cooling needs, further enhanced by the convenience of electronic controls and a remote for easy adjustments from anywhere in the room.

Energy efficiency is at the forefront of this LG air conditioner’s design, with a 11.5 SEER rating and the absence of an Energy Star certification, it still manages to perform efficiently. The auto-restart feature is particularly beneficial, automatically turning the unit back on to its previous settings after a power failure, ensuring continuous comfort without manual intervention. Ideal for medium-sized rooms, this air conditioner combines functionality with ease of use, making it a smart choice for those seeking relief from the heat.


  • Brand: LG
  • Capacity: 1.8 Pints
  • Cooling Power: 6000 BTU
  • Special Feature: Remote Controlled
  • Product Dimensions: 14.38″D x 17.31″W x 11.13″H
  • SEER: 11.5
  • Voltage: 115 Volts
  • Noise Level: 52 dB
  • Installation Method: Window
  • Coverage: Up to 250 Sq. Ft.


  • Low noise performance ensures a quiet and comfortable environment.
  • Remote control adds convenience to adjust settings from across the room.
  • Energy efficient operation reduces electricity bills without sacrificing performance.
  • Compact and easy to install, making it suitable for small to medium-sized rooms.


  • Fails to cool very small rooms effectively.

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3. Midea Quietest Window AC

Midea Quietest Window AC

The Midea Window Air Conditioner is a game-changer in the world of window air conditioners, offering unparalleled quietness, energy efficiency, and user convenience. Its unique U-shaped design cleverly utilizes the window itself to dampen noise, resulting in an operation as quiet as 42 dB, which is significantly quieter than traditional units. This design not only reduces noise but also allows for the window to be opened for fresh air, a feature not seen in conventional window AC units. Moreover, with a stellar 15 SEER rating and ENERGY STAR’s Most Efficient Certification, it achieves more than 35% energy savings compared to other models, making it a leader in eco-friendly cooling.

Smart control elevates this air conditioner above its peers, with Wi-Fi connectivity allowing for remote operation via the MSmartHome app, and compatibility with Alexa and Google Assistant for voice commands. Installation is straightforward, thanks to the included quick-snap bracket and secure side arms, compatible with single or double-hung windows. Whether it’s the robust cooling performance, the flexibility of smart controls, or the significant energy savings, this Midea unit is designed to provide a superior cooling experience while blending seamlessly into your life and decor.


  • Brand: Midea
  • Cooling Power: 10,000 BTU
  • Special Feature: Dust Filter, Fast Cooling, Dehumidifier
  • Product Dimensions: 19.17″D x 21.97″W x 13.46″H
  • Energy Star: 5 Star
  • SEER: 15
  • Voltage: 115 Volts
  • Noise Level: 42 dB
  • Smart Control: Yes, with app and voice command compatibility
  • Installation: Quick-snap bracket for easy setup
  • Refrigerant: R32


  • Ultra-quiet operation enhances comfort without disruptive noise.
  • Significant energy savings with advanced DC Inverter technology.
  • Smart control options for convenience and efficiency.
  • Innovative U-shaped design allows for window functionality and added security.


  • Issues with condensate drain placement affecting external window structures.

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4. Keystone Quietest Window AC

Keystone Quietest Window AC

The Keystone Air Conditioner emerges as a standout choice for those seeking a balance between efficiency, comfort, and quiet operation. Tailored for spaces up to 150 sq. ft., it embodies an ideal solution for bedrooms, offices, or small living areas, ensuring a cool and comfortable environment. The air conditioner features a user-friendly design with electronic controls and a remote, allowing for effortless adjustments to achieve your desired comfort level. Additionally, the unit boasts an Energy Star rating, highlighting its efficient operation and contribution to reduced energy bills. The inclusion of a dehumidification function, capable of removing up to 1.3 pints of moisture per hour, further enhances indoor comfort by maintaining optimal humidity levels.

Keystone’s commitment to convenience is evident in the easy installation process, supported by a comprehensive window installation kit. The unit also prioritizes maintenance simplicity with a washable, removable mesh filter, complemented by a Check Filter alert to ensure clean air flow. Despite its compact size, this air conditioner delivers powerful cooling, equipped with smart features like ‘Energy Saver’ and ‘Sleep’ modes for economical operation. Whether it’s the quiet performance or the smart energy-saving options, Keystone’s KSTAW05BE air conditioner is designed to meet the cooling needs of small spaces without compromise.


  • Brand: Keystone
  • Capacity: 1.3 Pints
  • Cooling Power: 5000 BTU
  • Special Feature: Remote Controlled
  • Product Dimensions: 15.4″D x 16″W x 12″H
  • SEER: 11.2
  • Voltage: 115 Volts
  • Noise Level: Below industry average
  • Dehumidification: Up to 1.3 pints per hour
  • Additional Features: 24-hour timer, Auto-restart, Energy Saver mode, Sleep mode


  • Efficient cooling and dehumidification for small rooms.
  • Remote control and electronic LED display for easy operation.
  • Energy Star rated for cost-effective performance.
  • Easy to install with a comprehensive window kit included.


  • Noise levels may vary, with mixed reviews from users.

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5. Windmill Quietest Window AC

Windmill Quietest Window Air Conditoner

The Windmill Air Conditioner redefines the experience of home cooling with its smart, efficient, and whisper-quiet operation. Designed to cool spaces up to 350 sq. ft., this 8,000 BTU unit combines functionality with style, seamlessly integrating into any modern home decor. Its pre-assembled installation kit ensures a hassle-free setup right out of the box, supported by a user-friendly guide. The Windmill AC stands out for its environmental consciousness, utilizing a refrigerant with 68% less global warming potential than traditional options and contributing to carbon offset for every purchase.

Beyond its cooling capabilities, the Windmill AC excels in user convenience through WiFi and app integration for both iPhone and Android, allowing remote control of your unit from anywhere. Voice control via Google Assistant or Amazon Alexa further enhances its smart features. The air conditioner boasts a sleek design with curved edges and an auto-dimming LED display that won’t disrupt your room’s aesthetic. Its top vents are engineered to distribute air more efficiently, ensuring comfortable cooling without the direct blast common in other units. With over 60 years of AC expertise, Windmill has crafted a high-quality air conditioner that prioritizes quiet operation, smart home compatibility, and eco-friendly cooling.


  • Brand: Windmill
  • Capacity: 19.4 Liters
  • Cooling Power: 8000 BTU
  • Special Feature: Led Display, App Control, Voice Control
  • Product Dimensions: 19.3″D x 19.4″W x 13.2″H
  • Energy Star: 5 Star
  • SEER: 6.2
  • Voltage: 115 Volts
  • Noise Level: 50 dB
  • Room Size: Up to 350 sq. ft.
  • Refrigerant: Eco-friendly R32


  • Smart features enable control from anywhere, enhancing convenience.
  • Eco-friendly refrigerant and carbon offset initiatives show environmental responsibility.
  • Pre-assembled installation kit and easy-to-follow instructions simplify setup.
  • Quiet operation makes it suitable for bedrooms, ensuring undisturbed sleep.


  • The installation more challenging than anticipated.

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6. Haier Quietest Window AC

Haier Quietest Window AC

The Haier Series great choice in the realm of window air conditioners for its exceptionally quiet operation and efficient cooling. Designed for rooms up to 250 sq. ft., this 6,000 BTU unit is a perfect blend of performance and tranquility, boasting a noise level as low as 44 dBA on low setting. This makes it one of the quietest air conditioners in its class, ideal for bedrooms, home offices, or any space where noise minimization is crucial. With a 12.2 SEER rating, it also exemplifies energy efficiency, ensuring that your comfort doesn’t come at the expense of higher utility bills.

Beyond its cooling prowess, the Haier ESAQ406T is loaded with user-centric features such as a full-function remote control, a 24-hour on/off timer, and multiple modes including cool, energy save, fan, and dehumidify. Its LED display with button lock and light offers easy control over settings, while the washable mesh filter with a clean filter reminder ensures the unit runs efficiently. The Serenity Series air conditioner also emphasizes convenience and safety with its easy installation process and a compressor blanket for reduced noise, offering a seamless blend of comfort, efficiency, and serenity.


  • Brand: Haier
  • Capacity: 1.5 Pints
  • Cooling Power: 6000 BTU
  • Special Feature: Ultra Quiet Sound Package
  • Product Dimensions: 18.13″D x 21.25″W x 12.44″H
  • SEER: 12.2
  • Voltage: 115 Volts
  • Noise Level: 44 dBA on low
  • Functions: Cool, Energy Save, Fan, Dehumidify
  • Remote Control: Full-function with LED display
  • Additional Features: 24-hour timer, Sleep mode, Auto cool


  • Ultra-quiet operation ideal for noise-sensitive environments.
  • Energy-efficient design leads to cost savings on utility bills.
  • Full-function remote control and LED display enhance user convenience.
  • Effective cooling and dehumidification improve indoor comfort.


  • Loud grinding noise upon cooling activation.

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Buying Guide For The Best Quietest Window Air Conditioner

When selecting the best quietest window air conditioner for your home or office, there are several critical factors to consider to ensure you get a unit that not only cools efficiently but also operates quietly. Understanding these factors will help you make an informed decision that meets your cooling needs while maintaining a peaceful environment.

1. Noise Level

Why it Matters: The noise level of a window air conditioner is a crucial factor for many, especially for units installed in bedrooms, living rooms, or any area where quiet is appreciated. Excessive noise can disrupt sleep, concentration, and overall comfort.

What to Look For: Look for units with a noise level of around 50 decibels (dB) or lower, as this range is considered quiet for window air conditioners. Some of the most advanced models may operate at even lower noise levels, close to 40 dB, which is comparable to the noise level of a quiet library. Manufacturers often list the decibel level in the product specifications, so pay close attention to these numbers.

2. BTU (British Thermal Units)

Why it Matters: The BTU rating of an air conditioner measures its cooling capacity. It’s essential to choose a unit with the right BTU level for your space to ensure efficient and effective cooling. An AC with too low a BTU rating will struggle to cool the room adequately, while one that’s too high can lead to inefficient energy use and uneven cooling.

What to Look For: The general rule of thumb is to look for approximately 20 BTU per square foot of space. However, other factors like ceiling height, room insulation, and sun exposure can affect this calculation. For example, a 150-square-foot room typically requires an air conditioner with a 3,000 BTU rating, but adjustments should be made based on your specific room characteristics.

3. Room Size

Why it Matters: Room size directly impacts the efficiency and effectiveness of your window air conditioner. Selecting a unit that’s too small or too large for the space can lead to poor cooling performance, higher energy bills, and excessive wear on the AC.

What to Look For: To match the air conditioner to your room size, first calculate the square footage of the room by multiplying its length by its width. Then, use the BTU guideline (20 BTU per square foot) to find a unit with the appropriate cooling capacity. Keep in mind that larger spaces might require air conditioners with higher BTU ratings, and vice versa for smaller spaces.

4. SEER (Seasonal Energy Efficiency Ratio)

Why it Matters: SEER rating measures the cooling output of an air conditioner over a typical cooling season, divided by the energy it consumes in Watt-Hours. It is a key indicator of an air conditioner’s efficiency. A higher SEER rating means better energy efficiency, leading to lower electricity bills and a reduced environmental impact.

What to Look For: For window air conditioners, a SEER rating of 13 or above is considered efficient. Some of the latest models might offer SEER ratings of 15 or higher, making them even more energy-efficient. While air conditioners with higher SEER ratings may come with a higher upfront cost, the long-term savings on energy bills can make them a cost-effective choice.

5. Type Of Control

Why it Matters: The type of control an air conditioner offers can significantly impact its convenience and ease of use. Modern air conditioners come with a variety of control options, including digital controls, remote controls, and smart controls that allow for app connectivity and voice command compatibility.

What to Look For: Consider air conditioners with intuitive controls that make it easy to adjust settings and modes. Remote controls are a must-have for convenience, allowing you to adjust settings without getting up. For tech-savvy users or those looking for maximum convenience, look for models that support Wi-Fi connectivity and can be controlled via smartphone apps or voice commands through smart home systems.

6. Warranty

Why it Matters: The warranty of a window air conditioner is a direct reflection of the manufacturer’s confidence in its product. It protects your investment by covering defects and malfunctions over a specified period. A comprehensive warranty can save you money on repairs and provide peace of mind.

What to Look For: Look for air conditioners that offer a warranty of at least one year on the entire unit and an extended warranty on the compressor, which is typically the most expensive part to replace. Some manufacturers offer warranties of up to 5 years on the compressor. Be sure to read the warranty terms carefully to understand what is covered and for how long.

Best Quietest Window Air Conditioner – FAQs

1. How many decibels of sound output are created by window air conditioners?

Ans: The overall noise output of a window air conditioner varies from model to model. Generally, these air conditioning units produce noise output between the 40 to 60 dB range. Some models are designed to deliver noise output below the 40 dB limit. By using additional soundproofing, the noise can be further lowered.

2. Is it possible for a larger window AC to be quieter than a smaller window AC?

Ans: If the size is considered, it is natural for a smaller unit to be quieter than a larger one. The overall noise output of a window air conditioner depends on various factors like design, compressor, speed of the fan, etc. The compressor will also be large enough for larger units to suit the cooling capacity. But with proper insulation and sound dampening, it can be quieter than a smaller window AC.

3. Does window AC come with any noise-cancelation or soundproofing options?

Ans: Due to the placement of the compressor and fan, it is natural for a window AC to create noise. Most of these units thereby come with various soundproofing and noise cancellation features. A thick layer of soundproof foam is applied at the AC joints. The compressor section is also surrounded by soundproof material. Users can also use noise-cancellation devices which cancel out the unwanted noise with sound waves.

4. Which type of ACs is the quietest?

Ans: Due to the placement of the compressor and fan, it is natural for a window AC to create noise. Most of these units thereby come with various soundproofing and noise cancellation features. A thick layer of soundproof foam is applied at the AC joints. The compressor section is also surrounded by soundproof material. Users can also use noise-cancellation devices which cancel out the unwanted noise with sound waves.


Window air conditioners offer an affordable cooling solution for homes. They are easy to install and available in quiet models to avoid noise disruption. This article lists the quietest units, along with a buying guide and FAQs to assist in selection.

  • In our search for the quietest window air conditioners, the Keystone Quietest Window AC model stands out for small rooms up to 150 square feet, offering low noise at 49 dB and energy efficiency with a SEER of 11.2. It also features automatic temperature control, a timer, and a sleep mode.
  • For those needing to cool larger areas up to 350 square feet, the Windmill Quietest Window AC combines strong cooling capabilities with quiet operation at 50 dB and smart features like WiFi and app control, despite its lower SEER rating of 6.2.
  • For budget-conscious buyers, the Frigidaire Quietest Window AC is a great choice for spaces up to 150 square feet, balancing efficiency (SEER of 11) with a relatively quiet operation at 52 dB, and it’s simple to install.

Each of these units caters to different needs, emphasizing quiet operation, energy efficiency, and value.

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