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 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.

The Midea 8,000 BTU U Shaped Smart Inverter Window Air Conditioner is designed for rooms up to 350 square feet and features very quiet operation, with noise levels as low as 32 decibels. This makes it an excellent choice for maintaining a peaceful environment without the typical background hum of an air conditioner. Its unique U-shaped design helps reduce noise and allows your window to stay open, letting in fresh air and keeping your view unobstructed—an uncommon feature in most window AC units.

With 8,000 BTU cooling power, this unit is suitable for medium-sized rooms such as bedrooms or small living spaces. It uses modern inverter technology to smoothly adjust cooling power, saving energy and providing consistent comfort. The unit is ENERGY STAR certified and saves over 35% in energy compared to traditional models, helping to reduce electricity bills. Smart control via Wi-Fi lets you adjust settings with your phone or voice assistants like Alexa and Google Assistant, adding convenience when you're not near the unit. Additional features include a remote control, programmable timer, multiple fan speeds, a built-in dehumidifier, and a dust filter for improved air quality.

Installation is user-friendly with a quick-snap bracket system compatible with most standard single or double-hung windows. The unit weighs about 55 pounds and measures roughly 19 x 22 x 13 inches, which may require some effort to install due to its size. Although the noise level is impressively low, the cooling capacity is fixed at 8,000 BTU, so it may not be sufficient for larger rooms or very hot climates. Some users might prefer manual controls over the smart features. This Midea model is a solid choice for those seeking a quiet, energy-efficient window AC with modern smart controls and the flexibility of an open window.