10 Best Quiet Air Conditioning Window Units 2026 in the United States

The Amazon Basics 6000-BTU window air conditioner is designed for spaces up to 250 square feet, making it a good choice for bedrooms, home offices, or small living areas. Its cooling power is solid for this size, offering 6000 BTUs with two modes: cooling and fan-only. This gives you flexibility depending on how cool or breezy you want the room.

One of its strong points is the relatively quiet operation, running at about 56 dB, which is gentle enough not to disturb sleep or work. Energy efficiency is decent with a SEER rating of 12.1, meaning it should keep running costs reasonable without using too much electricity. Installation is straightforward for standard windows measuring 23 to 36 inches wide and at least 13 inches high, with an adjustable window kit and all necessary mounting parts included (though you’ll need your own screwdriver).

The unit also offers user-friendly features like a washable filter to keep the air clean, remote control, a digital temperature display, and customizable settings including 7 temperature levels and 2 fan speeds. However, at 41.9 pounds, it’s a bit heavy, which might make the installation tricky if you’re doing it alone. While the noise level is low, it’s not the quietest model on the market, so super-sensitive users might notice it. It effectively balances good cooling, ease of use, and energy efficiency for its price and is best suited for those needing a reliable, moderately quiet air conditioner in smaller spaces.

The Amazon Basics 5000-BTU Small Window Air Conditioner is designed for small rooms up to 150 square feet, making it a solid choice for bedrooms, home offices, or other compact spaces. Its cooling capacity is sufficient for these room sizes, providing reliable cooling without overworking. This unit operates at a noise level of about 56 decibels, which is relatively quiet for a window AC, allowing you to sleep or work without much disruption. The energy efficiency ratio (SEER) of 14 indicates it uses electricity fairly efficiently, which can help keep energy bills reasonable.

Installation is straightforward for standard windows between 23 to 36 inches wide and at least 13 inches high, with an adjustable window kit included, although you’ll need a basic screwdriver yourself. The air conditioner offers customizable comfort with 7 temperature settings, 2 fan speeds, and two-way air direction control. It also has a washable filter to help reduce dust and allergens, which adds to indoor air quality and is easy to maintain.

While 56 dB is quiet compared to many window units, it’s not completely silent, so very sensitive sleepers might notice some noise. Also, the 5000 BTU capacity limits it to smaller areas, so it won’t be effective for larger rooms. This unit is a practical, budget-friendly option for those who want a quiet, easy-to-install air conditioner for small spaces, with decent energy efficiency and useful features for everyday comfort.

The LG 12,000 BTU window air conditioner is a solid choice for cooling medium-sized rooms up to 550 square feet, such as bedrooms or living rooms. It operates quietly, with noise levels as low as 52-53 dB on the lowest fan setting, making it suitable for sleep or work environments. The unit features three fan speeds, a digital control panel with a remote for easy adjustment, and 4-way air deflection to distribute cool air evenly throughout the room.

With a Seasonal Energy Efficiency Ratio (SEER) of 13, this model offers decent energy efficiency. It includes a washable filter, a timer for scheduling operation to save power, and a straightforward installation kit requiring no complicated assembly. The unit’s physical dimensions (about 23.6" wide and 22.2" deep) are standard for 12,000 BTU window units, making it important to check your window size compatibility. Its quiet operation and user-friendly features make it ideal for bedrooms or apartments where low noise is valued, though other models might be preferable for larger spaces or higher energy efficiency. The one-year warranty adds confidence in its reliability.