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

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.

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 Smart Window Air Conditioner is designed to cool medium to large rooms up to 550 square feet, making it a good choice for living rooms or kitchens. It offers multiple fan speeds and 4-way air deflection, allowing you to adjust airflow and cooling to your comfort. Noise-wise, it performs well with a low sound level of 52 dB at its quietest setting, which should keep your environment peaceful compared to louder units.

The unit is WiFi-enabled, letting you control it remotely via the LG ThinQ app or voice commands through Alexa and Google Assistant, adding convenience especially if you often adjust settings from another room or away from home. Installation fits standard window sizes, but the unit is fairly large and weighs 81 pounds, so it might need two people for setup. One downside is its Energy Efficiency Ratio (EER) is moderate, and it does not have an Energy Star rating, so it might use more electricity than more efficient models, which could affect your energy bills over time.

Additional features like a 24-hour timer, auto-restart after power outages, and a dust filter enhance usability and maintenance. For those who prioritize quiet operation and smart features along with solid cooling power, this LG unit represents a solid pick, though budget-conscious buyers might want to consider energy efficiency as well.