10 Best Quietest Air Conditioner 2025 in the United States

The Frigidaire 12,000 BTU Window Air Conditioner is designed to cool rooms up to 550 square feet, making it suitable for medium to larger rooms. It operates at a noise level of about 57 decibels, which is moderately quiet but not the absolute quietest available. This means it should be comfortable to run in living rooms or bedrooms without being too distracting, though extremely noise-sensitive users might notice it.

With three fan speeds and 6-way directional airflow, it offers customizable comfort, allowing you to adjust cooling to your preference. It also includes convenient features like a remote control, a washable dust filter with a cleaning alert, and modes such as Eco Mode and Sleep Mode to help reduce energy use and maintain comfort overnight. However, it lacks inverter technology, which could have improved energy efficiency and quieter operation. The energy efficiency ratio (SEER) is 10.9, which is decent but not outstanding, and it is not Energy Star certified.

Installation is straightforward as a window unit, and the package comes with necessary installation kits. It weighs 63.5 pounds, so some effort is needed to install it securely. This air conditioner delivers reliable cooling with convenient controls and reasonable noise levels, making it a solid choice for those seeking a balance of quiet operation and solid performance without advanced energy-saving technology.

The Frigidaire FHWC063TC1 Window Air Conditioner is designed for those seeking a quiet cooling solution. With a noise level of 51 dB, it is relatively quiet compared to many other air conditioners, making it suitable for bedrooms or offices where noise can be a distraction. Its cooling capacity of 6,000 BTU is adequate for spaces up to 250 square feet, making it perfect for small to medium-sized rooms.

The unit's Seasonal Energy Efficiency Ratio (SEER) of 11 indicates moderate energy efficiency, though it is not Energy Star rated, meaning it may not be the most energy-efficient option available. The inclusion of inverter technology helps in maintaining consistent temperatures and potentially reducing energy consumption. The multi-speed fan offers three different speeds, providing flexibility in cooling options. Additional features like remote control, filter light reminder, and washable dust filter add to the convenience of using this air conditioner. It comes with a window installation kit, making setup straightforward.

On the downside, some users might find the lack of an Energy Star rating a drawback if energy efficiency is a primary concern. Additionally, while the noise level is low, there are even quieter models on the market. The product's dimensions are compact, which is beneficial for smaller windows, but it might limit its cooling power for larger rooms. Perfect for individuals seeking a balance between quiet operation and effective cooling in a small to medium-sized space.

The BLACK+DECKER Smart Portable Air Conditioner with Heat offers a mixed bag of features for those looking for a quiet and efficient cooling and heating solution. One of its strong points is its versatility, functioning as a 4-in-1 unit that can cool, heat, dehumidify, and act as a fan, making it suitable for year-round use. With a cooling capacity of 10,000 BTU (DOE) and heating capacity of 10,000 BTU, it's designed for rooms up to 700 sq. ft., which covers a decent-sized area.

The device is also smart-enabled, allowing you to control it via a mobile app or through voice commands using Amazon Alexa or Google Assistant, which adds convenience for tech-savvy users. It also features a 'Follow Me' remote control, providing precise temperature control based on the remote's location. However, there are some drawbacks. The noise level is 54 dB, which while not extremely loud, may not be the quietest option available on the market—something to consider if noise is a top priority. The Seasonal Energy Efficiency Ratio (SEER) is 6.2, which is on the lower side, meaning it may not be the most energy-efficient choice. Additionally, it's not Energy Star rated, so it might not offer the best energy savings.

Installation is relatively straightforward with the included window kit, making it easy to set up, but keep in mind that it's a portable unit and might take up some floor space. Weighing 35 pounds, it's relatively easy to move around. This unit could be a good fit for those who need a versatile, smart-enabled air conditioner and heater, but if you need the quietest and most energy-efficient option, you might want to explore further.