10 Best Quiet Wall Air Conditioners 2025 in the United States

The LG 10,000 BTU Through the Wall Air Conditioner is a solid option for cooling rooms up to 440 square feet. With a cooling capacity of 9,800 BTU, it’s suitable for bedrooms, living rooms, or apartments. The Energy Efficiency Ratio (EER) of 10.7 means it is relatively efficient, which can help save on energy bills over time.

Additionally, the unit uses R-32 refrigerant, which is more energy-efficient and environmentally friendly compared to older refrigerants. It has three cooling speeds and three pre-programmed modes, including an energy saver mode that circulates air without constantly running the compressor, helping to maintain comfort while managing energy use. The 4-way air deflection provides flexibility in directing the airflow to where it's needed most.

One downside is its noise level, which is 60 dB—similar to normal conversation, so it might be noticeable in quieter settings. Installation is designed for through-the-wall setups and includes a snap-together trim kit for a clean indoor finish. Maintenance is straightforward with a washable, reusable filter, and a remote control adds convenience to operation. However, it is not suitable for window installation, which might limit flexibility. The unit is relatively heavy at 77 pounds, so you may need assistance with installation. Despite these considerations, it offers a one-year warranty for parts and labor. This air conditioner is a dependable choice for those needing efficient and flexible cooling for medium-sized rooms.

The LG 7,800 BTU Through the Wall Air Conditioner is a good choice for cooling rooms up to 330 square feet, making it suitable for bedrooms and offices. With a noise level of 56 dB, it's relatively quiet, which is essential for maintaining a peaceful environment. The unit has an Energy Efficiency Ratio (EER) of 10.7, indicating decent energy efficiency, although there are more efficient models available. It uses R-32 refrigerant, which is one of the most efficient refrigerants in the industry today.

Installation is through the wall only, so it won't work for window setups, but it comes with a plastic, snap-together trim kit for a clean look and a mesh grille for outdoor protection. The included remote control and three cooling speeds offer convenient and customizable cooling options. Additional features include a filter light reminder and a dehumidifier, adding to its utility.

It lacks an Energy Star certification, which might be a consideration for those looking for the highest energy efficiency standards. The unit also requires some maintenance with its washable, reusable filter. In terms of design, it is compact with dimensions of 24” W x 20.1” D x 14.4” H, and it weighs 66 pounds, so it’s relatively easy to handle.

The Keystone 14,000 BTU Wall Mounted Air Conditioner is a powerful unit capable of cooling spaces up to 700 square feet, making it suitable for large rooms such as bedrooms, garages, and nurseries. It boasts three cooling modes, three fan speeds, and four-way adjustable air louvers, allowing for customized comfort. Additionally, it acts as a dehumidifier, removing 2.9 pints of moisture per hour, which is beneficial for humid environments.

The unit is energy-efficient, featuring 'Energy Saver' and 'Sleep' modes to help reduce electricity consumption, although it does not have an Energy Star certification. The included remote control is smartly designed to measure and display the room temperature, ensuring precise cooling control. Installation is straightforward with the universal interior trim kit, but it requires a special 230-volt/20-amp outlet, which might not be present in all homes.

While the noise level is 61.3 dB, making it relatively quiet compared to other units in its category, it might still be noticeable in very quiet environments. The product dimensions are compact, saving floor space while maintaining window views. Users have rated it 4.1 out of 5 stars, indicating general satisfaction with its performance. However, some users might find the noise level and lack of an Energy Star rating to be minor drawbacks. This unit appears to be a reliable and efficient choice for those needing significant cooling capacity in large rooms.