10 Best Quiet Air Conditioners 2026 in the United States

The Dreo Portable Air Conditioner offers a solid blend of efficient cooling and quiet operation, making it a strong candidate for bedrooms or workspaces where low noise is important. With a 10,000 BTU cooling capacity, it can comfortably cool rooms up to around 200 square feet, which suits small to medium-sized bedrooms. Its noise level, at 45 dB, is impressively low for a portable AC, thanks to Dreo’s patented noise isolation system—this means it won’t disturb sleep or concentration.

Energy efficiency is decent with a SEER rating of 6.51, helping keep electricity costs reasonable for the cooling it delivers. The unit supports multiple fan speeds and modes (cool, fan, and dehumidifier), allowing customization depending on your needs. The 24-hour programmable timer and remote control—plus smart controls via app and voice assistants like Alexa and Google Home—add convenience, letting you set or adjust settings easily without getting up. One standout feature is its true drainage-free system, which automatically evaporates moisture, avoiding the hassle of emptying water tanks even in humid conditions. The unit is also designed for easy mobility with caster wheels and comes with flexible window mounting options.

On the downside, while 45 dB is quiet, it’s not completely silent, so light sleepers might still notice it. The SEER rating is average rather than high-end, so energy costs might be higher over prolonged use compared to top-tier models. Also, the cooling range tops at about 14 feet, so very large rooms may not cool evenly. Lastly, weighing over 57 pounds, it’s not the lightest portable AC but still manageable with wheels. This Dreo model suits those who want a quiet, smart, easy-to-use portable air conditioner primarily for smaller rooms. It balances cooling power, low noise, and handy features, though it’s less suited for large spaces or those seeking the absolute lowest energy consumption.

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 Amazon Basics 5000-BTU Small Window Air Conditioner is a good choice for cooling small rooms up to 150 square feet, making it suitable for bedrooms or home offices. It offers two fan speeds and seven temperature settings, allowing you to adjust the cooling to your comfort. With a noise level of 56 decibels, it runs quietly enough to not disturb sleep or work, which is important for a quiet air conditioner. It also includes a washable filter that helps keep dust and allergens out of the air, supporting easier maintenance.

Its adjustable window kit fits standard windows, making installation straightforward, though basic tools are needed. On the downside, it lacks a programmable timer and remote control, which means you’ll have to adjust settings manually. The energy efficiency is decent with a SEER rating of 14, helping to keep electricity costs reasonable.

This model covers all the basics and provides efficient cooling for small spaces. However, if you need more advanced features like remote operation or a timer, you might want to consider other models.