10 Best Quietest Window Air Conditioner 2026 in the United States

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 18,000 BTU Window Air Conditioner with Heat is designed to cool spaces up to 1,000 square feet, making it a solid choice for medium rooms like bedrooms, living rooms, or basements. It offers two fan speeds and a supplemental heater option, so you get some flexibility in managing temperature year-round. The noise level is around 61.7 decibels, which is moderate but not the quietest on the market—it might be noticeable in very quiet spaces. The unit requires a special 230/208V outlet, so installation might need some electrical work or professional help.

Energy efficiency is average with a SEER of 2.8; while it cools effectively, it isn't the most energy-saving model available. Maintenance is straightforward thanks to a washable filter and filter reminder light, helping keep the unit running smoothly. Features like a remote control, digital panel, 24-hour timer, and auto-restart after power outages add convenience.

If you’re looking for a reliable, easy-to-use unit with heating capabilities and moderate noise, this LG model fits well. However, if ultra-quiet operation or highest energy efficiency is your top priority, you might want to explore quieter or more efficient options.

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.