10 Best Quiet Air Conditioners 2026 in the United States

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.

The Daikin 18,000 BTU 2-Zone Mini Split is a solid choice if you're looking for a quiet and energy-efficient air conditioner that can cool and heat two separate spaces independently. With a very low noise level of just 24 decibels, it operates quietly enough to be unobtrusive in bedrooms, living rooms, or offices. It has a good cooling capacity of 18,000 BTU (or 1.5 tons), making it suitable for areas up to around 800 square feet, and the included heat pump provides reliable heating down to 5°F, so it works well year-round. The system is energy-efficient with a high SEER rating of 21 SEER2 and an EER of 12, helping to keep your electricity bills in check.

The unit comes with remote controls for each indoor fan coil, plus smartphone app and voice control options, which gives you convenient ways to adjust settings like fan speed, temperature, and timer. The programmable timer and multiple fan speeds offer good flexibility to customize airflow and comfort. Its R-32 refrigerant is more environmentally friendly, which is a nice bonus. Installation includes all necessary kits and brackets, but because it's a mini split system, professional installation is recommended.

This model is not Energy Star rated, which might matter if you prioritize certified energy savings. Also, while noise is very low, the product's physical dimensions listed seem minimal, which might be a data entry error but worth confirming. It carries a premium price tag, partly due to its advanced features and 12-year warranty. The Daikin mini split is ideal if you want efficient, quiet, and customizable cooling and heating for two rooms without ductwork, but it may be more than needed for very small spaces or those on a tight budget.