10 Best Quiet Air Conditioners 2025 in the United States

The BLACK+DECKER Smart Portable Air Conditioner with Heat offers a versatile solution for year-round climate control in rooms up to 700 sq. ft. It features 14,000 BTU ASHRAE 128 (10,000 BTU DOE) cooling capacity and 12,000 BTU heating, making it suitable for both hot summer months and cold winter conditions. The unit is relatively quiet, operating at 54 dB, which is a key strength for those seeking a quieter air conditioner for their bedrooms or living spaces.

Its energy efficiency ratio (EER) is modest at 6.2, indicating it might not be the most energy-efficient option available, potentially resulting in higher electricity bills. It compensates with smart features including Wi-Fi connectivity, voice control via Amazon Alexa or Google Assistant, and a mobile app for convenient operation. The 'Follow Me' remote control enhances temperature precision by acting as a thermostat.

Additional features include a programmable timer, multiple fan speeds, and dehumidifier function, providing comprehensive climate control. The unit comes with a complete installation kit, making the setup process straightforward. Weighing 35 pounds and being portable, it’s easy to move between rooms. This air conditioner is ideal for users looking for versatility and smart control, though those prioritizing high energy efficiency might need to consider other options.

The Midea 12,000 BTU Smart Inverter Air Conditioner is designed for medium to large rooms up to 550 square feet, offering strong cooling power combined with useful heating and dehumidifying features for year-round comfort. It stands out with its energy efficiency, holding an Energy Star rating and using inverter technology that can save up to 35% on electricity compared to standard models. The unit includes multiple fan speeds and five operating modes (cool, heat, dry, fan, auto), which allow you to tailor its performance to your needs.

A programmable 24-hour timer and remote control, along with smart home compatibility (via app and voice assistants like Alexa and Google), add convenience and flexibility. Noise-wise, it operates quietly enough to not disturb daily activities or sleep, with a noise level around 45 dB in low settings, although the specs mention 58 dB which is still reasonable for a window unit. One limitation is that the heat function won't work in very cold outdoor temperatures below 41°F, so it’s more suited for mild heating needs. Installation fits double-hung windows with specific size requirements, which is common for this product type. Its washable filter and electronic controls make maintenance and use straightforward.

This air conditioner is a strong option for those seeking a quiet, energy-efficient unit that also offers heating and smart control features, particularly suitable for moderate climates.

The BLACK+DECKER 10,000 BTU Portable Air Conditioner is designed to cool rooms up to 450 sq. ft., making it suitable for bedrooms, living rooms, or small apartments. With a noise level of 52 dB, it operates quietly enough for most users to sleep comfortably while it's running. The cooling capacity of 10,000 BTU ensures efficient cooling performance even on hot summer days.

This unit is versatile, functioning as an air conditioner, dehumidifier, and fan, which adds to its utility in varying weather conditions. Energy efficiency is moderate with a SEER rating of 6.7, suggesting it could be more energy-saving. The inclusion of a 24-hour programmable timer is a convenient feature for controlling the unit without manual intervention. Additionally, the remote control adds ease of use, allowing adjustments from across the room.

The portable design with casters and side handles makes it easy to move the unit as needed, and the easy-to-install window kit simplifies the setup process. Despite minor drawbacks in energy efficiency, the BLACK+DECKER 10,000 BTU Portable Air Conditioner offers a good balance of performance, convenience, and quiet operation.