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10 Best Ultra Quiet Air Conditioners 2025 in the United States

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Our Top Picks

#1

Winner

LG 10000 BTU Smart Wi-Fi Enabled, Ultra-Quite, Quick and Easy Installation Window Air Conditioner with Remote, ThinQ Technology, Washable Filter, Eco-Friendly R32 Refrigerant (White)

Rating
9.9
Chosen by1,146
Noise Level (dB)
Sleep Mode
Installation Type

Most important from
16897 reviews

Noise Level (dB)
The LG air conditioner performs very well and is relatively quiet, making it ideal for bedrooms or offices.
Sleep Mode
The energy-saving mode is excellent, allowing the fan to shut off periodically and keeping the air from stagnating, which helps in sleeping comfortably.
Installation Type
Despite minor cosmetic damage during shipping, the unit works well and seals tightly in the window frame.

The LG 10000 BTU Smart Wi-Fi Enabled Window Air Conditioner is designed for those who value quiet operation, with a noise level as low as 53 dB. This makes it a strong choice for bedrooms or offices where minimal noise is crucial. It effectively cools rooms up to 450 square feet and offers multiple fan speeds, allowing you to customize the airflow to your liking. The unit also features LG ThinQ technology, which enables remote control via a smartphone app or voice commands through Alexa and Google Assistant, adding convenience to its list of benefits.

The auto-restart function ensures that the unit will resume operation after a power outage, which is a useful feature for maintaining consistent comfort. Additionally, it comes with a washable filter, making maintenance relatively easy. The air conditioner uses eco-friendly R32 refrigerant, which is a plus for environmentally conscious users. However, it does not have an Energy Star rating, which might be a drawback for those particularly focused on energy efficiency.

At 57 pounds, it may also be a bit cumbersome to install without assistance. The SEER rating of 11.4 is decent but not the highest available. Priced competitively, this LG model is a practical option for those looking for a quiet, smart air conditioning solution, although those needing the utmost energy efficiency might look elsewhere.

Rating
9.9
Chosen by1,146
Noise Level (dB)
Sleep Mode
Installation Type

Most important from
16897 reviews

Noise Level (dB)
The LG air conditioner performs very well and is relatively quiet, making it ideal for bedrooms or offices.
Sleep Mode
The energy-saving mode is excellent, allowing the fan to shut off periodically and keeping the air from stagnating, which helps in sleeping comfortably.
Installation Type
Despite minor cosmetic damage during shipping, the unit works well and seals tightly in the window frame.
#2

Dreo Portable Air Conditioners, 12,000 BTU AC Unit for Bedroom with Drainage-free Cooling, 46dB Quiet, APP/Voice/Remote, 24h Timer with Fan & Dehumidifier, Smart Standing AC for Room Indoors, AC515S

Rating
9.8
Noise Level (dB)
Cooling Capacity (BTU)
Fan Speeds

Most important from
690 reviews

Noise Level (dB)
Operation is impressively quiet—even on high settings—ensuring a peaceful environment for sleep or work.
Cooling Capacity (BTU)
The unit delivers powerful and effective cooling for medium-sized rooms, making it ideal for bedrooms and small living spaces.
Fan Speeds
Strong airflow combined with additional fans can boost circulation and comfort in warmer climates.
Sleep Mode
Operation is impressively quiet—even on high settings—ensuring a peaceful environment for sleep or work.
Installation Type
Setup and installation are straightforward, aided by a comprehensive window kit and strong adhesive strips that seal tightly and prevent heat leakage.

The Dreo Portable Air Conditioner offers a strong cooling capacity of 12,000 BTU, making it suitable for rooms up to about 300 square feet, which fits well for bedrooms or small living areas. One of its standout features is its quiet operation at 46 dB, which is relatively low noise for an AC and ideal for maintaining a peaceful environment during sleep or work. It supports multiple modes—including cooling, fan, and dehumidifier—giving you flexible control over comfort.

The energy efficiency ratio (SEER) of 6.1 is moderate; it’s not the most efficient model but reasonable for a portable AC of this size. You can control it conveniently through voice commands with Alexa or Google Assistant, a mobile app, or a remote, adding to its user-friendly appeal. Installation is simplified with universal window kits, suitable for a range of window sizes, so you don’t need to worry about compatibility or complicated setup. The unit consumes between 1150 to 1450 watts, which may affect electricity bills if used extensively.

The drainage-free cooling feature under 85% humidity reduces maintenance efforts but may still require occasional water management in very humid environments. This AC is a solid choice if you want a quiet, powerful, and smart portable air conditioner that is easy to install and operate, especially for bedroom use.

Rating
9.8
Noise Level (dB)
Cooling Capacity (BTU)
Fan Speeds

Most important from
690 reviews

Noise Level (dB)
Operation is impressively quiet—even on high settings—ensuring a peaceful environment for sleep or work.
Cooling Capacity (BTU)
The unit delivers powerful and effective cooling for medium-sized rooms, making it ideal for bedrooms and small living spaces.
Fan Speeds
Strong airflow combined with additional fans can boost circulation and comfort in warmer climates.
Sleep Mode
Operation is impressively quiet—even on high settings—ensuring a peaceful environment for sleep or work.
Installation Type
Setup and installation are straightforward, aided by a comprehensive window kit and strong adhesive strips that seal tightly and prevent heat leakage.
#3

Midea Duo 14,000 BTU (12,000 BTU SACC) High Efficiency Inverter, Ultra Quiet Portable Air Conditioner, Cools up to 550 Sq. Ft., Works with Alexa/Google Assistant, Includes Remote Control & Window Kit

Rating
9.7
Noise Level (dB)
Cooling Capacity (BTU)
Energy Efficiency Ratio (EER)

Most important from
430 reviews

Noise Level (dB)
The unit operates at a very low noise level, maintaining accurate temperatures quietly and making it ideal for bedrooms or living spaces.
Cooling Capacity (BTU)
Cooling performance is powerful and efficient, quickly lowering room temperature and then cycling off to save energy.
Energy Efficiency Ratio (EER)
Energy usage is notably lower than typical portable ACs, helping keep electric bills reasonable even with strong cooling output.
Installation Type
Installation of the window kit is straightforward with ample materials included, though attaching the hose to the panel can be a tight fit requiring some patience.

The Midea Duo 14,000 BTU portable air conditioner is a solid choice for those needing quiet, efficient cooling in medium-sized rooms up to 550 sq. ft. It stands out with a very low noise level of 42 dB, which is about as quiet as a library, making it ideal for bedrooms or living areas where peace is valued. The dual hose-in-hose design enhances air circulation by pulling in and exhausting air outside, improving cooling efficiency and preventing hot air leaks indoors. This, combined with inverter technology, helps it use about 40% less electricity than typical portable AC units, which is a big plus for energy savings. With a SEER rating of 8.9, it is reasonably efficient but not the highest in class, so some rivals could be a bit more cost-effective to run. The unit supports smart controls via a mobile app and voice assistants like Alexa and Google, adding convenience and modern usability.

It includes multiple fan speeds and a sleep mode for comfort and quiet operation during the night. Being portable, it offers flexible installation without permanent mounting, but it weighs 75 pounds, which is fairly heavy for a portable unit. The 14,000 BTU cooling power is strong enough for rooms up to about 550 sq. ft., suitable for many homes or offices. On the downside, it lacks a BEE Star Rating which might be important depending on your location, and some users have noted the included window kit installation can be tricky. The dust filter is a useful feature to keep air clean.

This air conditioner blends quiet, efficient performance with smart features, making it well-suited for users who prioritize low noise and portable use in medium-sized rooms.

Rating
9.7
Noise Level (dB)
Cooling Capacity (BTU)
Energy Efficiency Ratio (EER)

Most important from
430 reviews

Noise Level (dB)
The unit operates at a very low noise level, maintaining accurate temperatures quietly and making it ideal for bedrooms or living spaces.
Cooling Capacity (BTU)
Cooling performance is powerful and efficient, quickly lowering room temperature and then cycling off to save energy.
Energy Efficiency Ratio (EER)
Energy usage is notably lower than typical portable ACs, helping keep electric bills reasonable even with strong cooling output.
Installation Type
Installation of the window kit is straightforward with ample materials included, though attaching the hose to the panel can be a tight fit requiring some patience.

Buying Guide for the Best Ultra Quiet Air Conditioners

Choosing the right ultra-quiet air conditioner involves understanding your specific needs and the key specifications that will ensure you get the best performance with minimal noise. Ultra-quiet air conditioners are designed to provide cooling comfort without disturbing your peace, making them ideal for bedrooms, offices, and other quiet spaces. Here are the key specifications to consider when selecting an ultra-quiet air conditioner and how to navigate them to find the best fit for you.
Noise Level (dB)The noise level of an air conditioner is measured in decibels (dB). This spec is crucial because it directly impacts how quiet the unit will be. Generally, a lower dB rating means a quieter operation. Noise levels can range from around 19 dB (very quiet) to 60 dB (moderate noise). For ultra-quiet models, look for units with noise levels below 30 dB. Consider where you will be using the air conditioner; for a bedroom, you might want the quietest option available, while for a living room, a slightly higher noise level might be acceptable.
Cooling Capacity (BTU)Cooling capacity is measured in British Thermal Units (BTU) and indicates how much heat the air conditioner can remove from a room per hour. This spec is important because it determines the size of the space the unit can effectively cool. BTU ratings typically range from 5,000 to 24,000. To choose the right capacity, consider the size of the room: smaller rooms (up to 150 sq. ft.) need around 5,000-6,000 BTU, medium rooms (150-300 sq. ft.) need 7,000-8,000 BTU, and larger rooms (300-500 sq. ft.) need 10,000-12,000 BTU. Ensure the unit's BTU rating matches your room size for efficient cooling.
Energy Efficiency Ratio (EER)The Energy Efficiency Ratio (EER) measures the air conditioner's cooling efficiency. It is calculated by dividing the BTU rating by the power consumption in watts. A higher EER indicates a more efficient unit, which is important for reducing energy consumption and saving on electricity bills. EER ratings typically range from 8 to 12. For ultra-quiet air conditioners, look for models with an EER of 10 or higher to ensure good energy efficiency. Consider your usage patterns; if you plan to use the unit frequently, a higher EER will be more cost-effective in the long run.
Fan SpeedsFan speeds refer to the different settings available for the air conditioner's fan. This spec is important because it allows you to control the airflow and noise level. Most units offer at least three fan speeds: low, medium, and high. Some ultra-quiet models may have additional settings or a variable speed fan for more precise control. If you need flexibility in cooling and noise control, look for units with multiple fan speeds. For instance, a low fan speed can be used at night for quieter operation, while higher speeds can be used during the day for faster cooling.
Sleep ModeSleep mode is a feature that adjusts the air conditioner's settings to provide a quieter and more comfortable sleeping environment. This spec is important for maintaining a consistent temperature while minimizing noise during the night. Sleep mode typically involves gradually increasing the temperature and reducing the fan speed over time. If you plan to use the air conditioner in a bedroom, look for models with a sleep mode feature. This will help ensure a restful night's sleep without sudden temperature changes or noise disturbances.
Installation TypeInstallation type refers to how the air conditioner is set up in your space. Common types include window units, portable units, and split systems. This spec is important because it affects the ease of installation, noise levels, and overall performance. Window units are generally quieter and more efficient but require a suitable window for installation. Portable units are more flexible and easier to move but can be noisier. Split systems offer the quietest operation and best performance but require professional installation. Consider your space and installation preferences to choose the right type for you.

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