10 Best Ultra Quiet Air Conditioners 2026 in the United States

The Frigidaire 24,000 BTU Smart Inverter Window Air Conditioner is a strong choice if you want quiet cooling for a larger room, up to about 1,020 square feet. Its noise level at 45 decibels is relatively low, which means it runs quietly enough to not be disruptive, fitting well within the ultra-quiet category. Thanks to inverter technology combined with Energy Star certification, it offers efficient energy use, helping to lower electricity bills while keeping your space comfortably cool. The unit provides three fan speeds and 6-way directional airflow, giving you good control over how air circulates in the room.

While it doesn’t specify a dedicated sleep mode, features like the 24-hour timer and dry mode help maintain comfort during the night or when humidity is high. Installation is straightforward since it’s a window unit, but it requires a 230V power supply and weighs around 103 pounds, so setup might need some help. The smart Wi-Fi connectivity is a nice modern touch, allowing remote control via an app or voice commands, which adds convenience.

Although it cools a large area effectively, the noise level, while low, might still be noticeable in very quiet environments like bedrooms for some sensitive users. The 1-year manufacturer warranty is standard but could be longer for peace of mind. This Frigidaire model balances quiet operation and energy efficiency with smart features, making it suitable for those who want effective cooling with minimal noise and modern controls in medium to large rooms.

The Profile PHNT10CC GE ClearView window air conditioner is designed for those prioritizing ultra-quiet operation, boasting a remarkably low noise level of 40 dB. This makes it an excellent choice for medium rooms where peace and quiet are important, such as bedrooms in homes or small office spaces. With a cooling capacity of 10,300 BTU, it's well-suited for spaces up to 450 square feet, providing efficient cooling with its advanced inverter technology. This technology not only reduces noise but also enhances the unit's energy efficiency, evidenced by its Energy Star certification and an 11.2 SEER rating, which can help save on electricity bills.

The inclusion of a full window view design is a unique feature, allowing more natural light into the room and maintaining the ability to open or close the window easily after installation. This is coupled with a flex-depth installation capability, making it adaptable to various window depths, promising a secure fit without compromising your room's aesthetics.

Smart features like built-in Wi-Fi and compatibility with Amazon Alexa and Google Assistant add convenience, allowing control from your smartphone or voice commands, though this might be less appealing to those who prefer more traditional controls. The unit can also be operated using a remote control, providing flexibility in its operation. A potential drawback is the unit's size and weight, which may make installation a bit challenging for a single person. Nevertheless, for those seeking a quiet, energy-efficient window AC with smart capabilities, this GE model offers a compelling option.

The LG 6,000 BTU Dual Inverter Smart Window Air Conditioner is a solid choice for anyone looking for a quiet cooling solution for medium-sized rooms up to 250 square feet. Thanks to its Dual Inverter technology, it runs very quietly at about 44 decibels in sleep mode, which is a low noise level that won’t disturb your rest or work. This model is also energy efficient, offering around 35% more savings compared to standard Energy Star-certified units, helping reduce electricity bills over time. It includes multiple fan speeds (4 in total), allowing you to adjust the airflow to your comfort. The sleep mode further enhances quiet operation and comfort at night.

Another nice feature is its smart capabilities; you can control it remotely via the LG ThinQ app or with voice commands through Alexa or Google Assistant, adding convenience if you like smart home tech. Installation is designed for windows, typical for this type of unit, which might require some care to fit correctly and securely. One limitation is its cooling capacity, suited primarily for smaller to medium rooms, so it may not be effective in large or very hot spaces. The unit weighs 63 pounds, so installation may need a bit of help.

This product balances quiet performance, energy efficiency, and smart features effectively, making it a good pick if you want a reliable and quiet window air conditioner that’s easy to control.