10 Best Ultra Quiet Air Conditioners 2025 in the United States

The LG 10000 BTU Smart Wi-Fi Enabled Window Air Conditioner is designed for those who value quiet operation, with a noise level as low as 53 dB. This makes it a strong choice for bedrooms or offices where minimal noise is crucial. It effectively cools rooms up to 450 square feet and offers multiple fan speeds, allowing you to customize the airflow to your liking. The unit also features LG ThinQ technology, which enables remote control via a smartphone app or voice commands through Alexa and Google Assistant, adding convenience to its list of benefits.

The auto-restart function ensures that the unit will resume operation after a power outage, which is a useful feature for maintaining consistent comfort. Additionally, it comes with a washable filter, making maintenance relatively easy. The air conditioner uses eco-friendly R32 refrigerant, which is a plus for environmentally conscious users. However, it does not have an Energy Star rating, which might be a drawback for those particularly focused on energy efficiency.

At 57 pounds, it may also be a bit cumbersome to install without assistance. The SEER rating of 11.4 is decent but not the highest available. Priced competitively, this LG model is a practical option for those looking for a quiet, smart air conditioning solution, although those needing the utmost energy efficiency might look elsewhere.

The ZAFRO 16,000 BTU portable air conditioner is designed to offer effective cooling with a focus on quiet operation and energy efficiency. It delivers a strong cooling capacity suitable for medium to large indoor rooms, with a 12,000 BTU SACC rating that ensures the unit can cool spaces quickly and evenly thanks to its dual-hose design and 4-way airflow. One of its standout features is the low noise level at 42 dB, which makes it one of the quieter portable ACs and lets you sleep comfortably without disruption. The inclusion of a sleep mode and gentle airflow further supports peaceful nighttime use.

Energy efficiency is another plus, with a CEER rating of 12.8 that helps reduce electricity bills compared to standard models. The unit also offers multiple fan speeds and modes, including cooling, fan-only, and dehumidifier, controlled easily via an app, remote, or digital panel. Installation is straightforward for a portable unit, with a quick-install window adapter and rolling wheels for easy movement between rooms. The upgraded self-evaporation system minimizes the need for manual drainage, adding convenience.

The unit weighs over 55 pounds, which might be heavy for some users despite the wheels. While 42 dB is quiet, it is not the absolute quietest option available for those seeking near-silent operation. This model is suited for those wanting a powerful, energy-saving portable air conditioner with smart controls and decent quietness, ideal for bedrooms and living areas where noise and ease of use are important.

The Midea Duo 14,000 BTU portable air conditioner is a solid choice for those needing quiet, efficient cooling in medium-sized rooms up to 550 sq. ft. It stands out with a very low noise level of 42 dB, which is about as quiet as a library, making it ideal for bedrooms or living areas where peace is valued. The dual hose-in-hose design enhances air circulation by pulling in and exhausting air outside, improving cooling efficiency and preventing hot air leaks indoors. This, combined with inverter technology, helps it use about 40% less electricity than typical portable AC units, which is a big plus for energy savings. With a SEER rating of 8.9, it is reasonably efficient but not the highest in class, so some rivals could be a bit more cost-effective to run. The unit supports smart controls via a mobile app and voice assistants like Alexa and Google, adding convenience and modern usability.

It includes multiple fan speeds and a sleep mode for comfort and quiet operation during the night. Being portable, it offers flexible installation without permanent mounting, but it weighs 75 pounds, which is fairly heavy for a portable unit. The 14,000 BTU cooling power is strong enough for rooms up to about 550 sq. ft., suitable for many homes or offices. On the downside, it lacks a BEE Star Rating which might be important depending on your location, and some users have noted the included window kit installation can be tricky. The dust filter is a useful feature to keep air clean.

This air conditioner blends quiet, efficient performance with smart features, making it well-suited for users who prioritize low noise and portable use in medium-sized rooms.