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 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.

The Midea MAW10V1QWT U-Shaped Window Air Conditioner is designed with quiet operation as a top priority, producing noise as low as 32 decibels, which is significantly quieter than many traditional window AC units. This makes it a great choice for bedrooms, offices, or any space where noise can be distracting. It offers a solid cooling capacity of 10,000 BTU, suitable for rooms up to about 450 square feet, balancing effective cooling for most medium-sized rooms.

Thanks to its advanced DC inverter technology, it achieves over 35% energy savings compared to standard models and carries an ENERGY STAR certification, which means it’s more efficient and can help reduce electricity bills. The unit features smart Wi-Fi control, allowing you to manage temperature settings remotely via a smartphone app or voice assistants like Alexa and Google Assistant, adding convenience for modern homes. Its unique U-shaped design not only helps reduce noise by using the window as a sound barrier but also allows the window to open slightly for fresh air and natural light, a feature not commonly found in other window ACs.

Installation is straightforward with the included quick-snap bracket, fitting most single or double-hung windows between 22 and 36 inches wide. The unit weighs nearly 57 pounds, so installation may require some effort or help. This model distinguishes itself through quiet performance and energy efficiency, making it an excellent option for those prioritizing a peaceful environment and lower power use, though installation might require some care due to the unit's weight.