10 Best Quietest Window Air Conditioner 2026 in the United States

The Amazon Basics 5000-BTU window air conditioner is a solid choice for cooling small rooms up to 150 square feet, such as bedrooms or home offices. With a cooling capacity of 5000 BTU, it can efficiently handle these spaces without using too much energy, featuring a respectable Energy Efficiency Ratio (SEER) of 14. One of its main advantages is quiet operation, producing noise levels around 56 dB, which is fairly low for a window AC and suitable for sleeping or working.

It offers simple mechanical controls with 7 temperature settings and 2 fan speeds, allowing you to customize comfort easily. The unit also includes a washable filter that helps trap dust and allergens, making maintenance straightforward and helping keep air quality better. Installation is designed to be convenient, fitting standard windows between 23 and 36 inches wide with an adjustable window kit and mounting hardware included; however, you will need a screwdriver yourself.

The noise level isn’t the absolute quietest available—some models can be quieter if silence is your top priority. Also, it only offers two fan speeds, which might limit fine-tuning airflow for some users. Given its modest size and power, it’s best suited for small rooms rather than larger living areas. This model presents a budget-friendly, user-friendly option for anyone seeking a reliable, quiet air conditioner for smaller spaces without complicated features or high energy bills.

The Midea MAW08HV1CWT EasyCool Smart Inverter Air Conditioner stands out for its ultra-low noise performance, operating at just 45 dB. This makes it an ideal choice for those seeking a quiet environment, whether for sleeping, working, or relaxing. Its cooling capacity of 8,000 BTU is sufficient for rooms up to 350 square feet, making it a versatile option for bedrooms or medium-sized living spaces. Additionally, its energy efficiency is notable with a SEER rating of 14.5 and Energy Star certification, promising up to 35% energy savings compared to standard models.

This air conditioner also offers multi-season functionality with both cooling and heating capabilities, providing comfort throughout the year as long as the outside temperature exceeds 41°F for heating functions. The unit is user-friendly with an LED display, multiple modes, three-speed settings, a 24-hour timer, and ECO energy saver mode. It can be controlled via a SmartHome App, remote control, or voice commands through Alexa and Google Assistant, adding to its convenience.

Installation requirements are standard for double-hung windows, and the included installation kit makes setup straightforward. Regular maintenance is made easy with a washable filter accessible from the front panel. However, at 56 pounds, the unit is relatively heavy, which might make installation a bit challenging for some users. Additionally, while it provides excellent energy efficiency and quiet operation, the heating function has its limits based on outside temperature. This air conditioner is best suited for users who prioritize quiet operation and energy savings, combined with the convenience of smart controls and multi-season use.

The LG 12,000 BTU Window Air Conditioner is a solid choice if you’re looking for a quiet unit that cools medium-sized rooms up to 550 square feet, such as bedrooms, living rooms, or small apartments. It operates at about 52-53 decibels on its lowest setting, which is fairly quiet for a window AC and should let you work or sleep comfortably without much disturbance. It offers three fan and cooling speeds, so you can adjust airflow to your liking and use the auto cool mode for easy temperature maintenance. The digital control panel and remote control add convenience, while the 24-hour timer helps save energy by letting you schedule when the unit runs.

Installation is made easier with the included window kit and slide-out washable filter, which also reminds you when it needs cleaning. The energy efficiency ratio (SEER) is 13, which is decent but not top-tier, so the unit balances performance and running cost moderately well. One downside is that it lacks a formal energy star or BEE star rating, which means it might not be the most efficient compared to some newer models. Also, the unit weighs 81 pounds, so it might require some help during installation.

The 1-year warranty covers parts and labor, giving some peace of mind. With generally positive customer ratings around 4.2 out of 5 stars, this LG model is a reliable pick if quiet operation and customization are your priorities, though if energy savings are your top concern, you might find alternatives with higher efficiency ratings.