10 Best Quietest Window Air Conditioner 2025 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 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 Midea MAW08V1QWT stands out for those looking specifically for a quiet window air conditioner. Thanks to its unique U-shaped design, it blocks outside noise and operates as quietly as 32 decibels, which is very low compared to typical units. This makes it ideal for bedrooms or offices where noise can be a distraction. It provides 8,000 BTU cooling power, suitable for rooms up to about 350 square feet, making it a good fit for small to medium rooms.

Another plus is its energy efficiency—using advanced inverter technology, it saves more than 35% energy compared to standard models and holds an ENERGY STAR certification, so you can expect lower electricity bills. The unit also offers convenient smart features like Wi-Fi control and compatibility with Alexa and Google Assistant, allowing you to adjust settings from your phone or voice commands. Installation is relatively simple with the included bracket and fits various window types, plus the window can stay partially open for fresh air even when the AC is running.

The unit weighs over 55 pounds, which might require some help during installation. Although quiet, the airflow options are limited to two speeds, which might restrict fine-tuning comfort levels. Also, while it covers average room sizes, it may not be powerful enough for larger spaces. This air conditioner represents a solid choice for those who prioritize peace and energy savings in a compact, smart-controlled package.