Quietest Room Air Conditioners 2025

Quiet room air conditioners are essential for creating a comfortable and productive environment, whether you're trying to sleep, work, or simply relax without the distraction of excessive noise. Finding an AC unit that effectively cools while maintaining a low noise level can significantly improve your quality of life, especially during hot summer months. Making the right choice is about balancing cooling power with minimal disruption.

Note: Our product recommendations aren't strictly ordered by noise level alone. We use our own proprietary algorithm that factors in real user feedback about noise performance. Additionally, we consider the complete package - features, value, performance, and product diversity - to create the most helpful and balanced buying guide possible.

Best Quiet Room Air Conditioners

This guide highlights some of the best quiet room air conditioners available, focusing on their noise performance, cooling capabilities, and overall value. Each product has been evaluated based on customer feedback and technical specifications to help you find the perfect unit for your needs.

Midea 8,000 BTU U Shaped Smart Inverter Window Air Conditioner

Midea 8,000 BTU U Shaped Smart Inverter Window Air Conditioner
Midea 8,000 BTU U Shaped Smart Inverter Window Air Conditioner, Cools up to 350 Sq. Ft., Ultra Quiet with Open Window Flexibility, Works with Alexa/Google Assistant, 35% Energy Savings, Remote Control
  • ULTRA QUIET - The U-shape design of Midea U Smart Inverter air conditioner uses your window to block noise outside. The highly-efficient inverter system warrants ultra-low noise and vibration, 9x quieter than traditional units with operation as low as 32 dBA. Cooling Watts : 710W, Rated Cooling Amps (AHAM) : 8.78.Airflow (CFM) Roomside (hi low) : 215/150. Refrigerant : R32.
  • MORE THAN 35% ENERGY SAVINGS - With the advanced DC Inverter technology, Midea U window air conditioner achieves over 35% energy savings compared to other traditional units. It is the first window AC to obtain the ENERGY STAR Most Efficient Certification.
  • SMART CONTROL - Midea U Smart Inverter air conditioner is Wi-Fi enabled and can be controlled from anywhere using the SmartHome app on iOS or Android. You can also use voice commands throughout your house, office, or apartment using Alexa or Google Assistant devices.
  • FLEXIBLE WINDOW OPENING - The U-shaped design allows your window to open, bringing fresh air into your home and maintaining more of your view when the window air conditioner is installed. When the window is closed, the Anti-Theft Mechanism locks the window for added safety.
  • ROBUST INSTALLATION - Install the included quick-snap bracket, set the air conditioner on the bracket, and secure the sidearms. Then you are all done and ready to enjoy. Available for single-hung or double-hung windows with width 22"-36", minimal height at 13.75".
  • Specified Noise Level: 42 dB

The Midea U-shaped air conditioner stands out for its innovative design, which significantly reduces noise by utilizing the window to block outside sounds. Its inverter technology allows for quiet operation, reportedly as low as 32 dBA, making it substantially quieter than traditional window units. Beyond noise reduction, this model boasts impressive energy efficiency, potentially saving you over 35% on energy costs. The smart features, including Wi-Fi connectivity and voice control, add convenience, while the U-shape design also allows you to open your window for fresh air. Installation can be tricky for some, but overall, the Midea U offers a compelling combination of quiet operation, smart features, and energy savings.

Dreo Portable Air Conditioners, 8,000 BTU Air Conditioner for Bedroom

Dreo Portable Air Conditioners, 8,000 BTU Air Conditioner for Bedroom
Dreo Portable Air Conditioners, 8,000 BTU Air Conditioner for Bedroom with Drainage-free Cooling, 45dB Quiet, APP/Voice/Remote, 24h Timer with Fan & Dehumidifier, Smart AC Unit for Room Indoors
  • 𝗨𝗹𝘁𝗿𝗮 𝗣𝗼𝘄𝗲𝗿𝗳𝘂𝗹 𝗜𝗰𝗲𝗖𝗼𝗼𝗹 𝗦𝘆𝘀𝘁𝗲𝗺: Increase coverage up to 14 ft. away with this 8000 BTU ASHRAE (5000 BTU SACC) portable air conditioner and its best buddy, the fan, giving you instant chills even in hot summer days. Additionally, you can keep the temperature between 61°F to 86°F using various controls to tailor the cooling to your preferences.
  • 𝗗𝗥𝗘𝗢'𝘀 𝗣𝗮𝘁𝗲𝗻𝘁𝗲𝗱 𝗡𝗼𝗶𝘀𝗲 𝗜𝘀𝗼𝗹𝗮𝘁𝗶𝗼𝗻 𝗦𝘆𝘀𝘁𝗲𝗺: reduces the ac floor unit compressor and turbulence noise to just 45dB, ideal for bedtime or working environments without interruptions.
  • 𝗧𝗿𝘂𝗲 𝗗𝗿𝗮𝗶𝗻𝗮𝗴𝗲-𝗳𝗿𝗲𝗲 𝗦𝘆𝘀𝘁𝗲𝗺: DREO's patented algorithm, sensors and pump evaporate excess water automatically eliminating the need for drainage in environments of up to 90% humidity.
  • 𝗦𝗺𝗮𝗿𝘁 𝗖𝗹𝗶𝗺𝗮𝘁𝗲 𝗖𝗼𝗻𝘁𝗿𝗼𝗹: Control this portable air conditioner for bedroom with your voice using Siri, Amazon Alexa and Google Home, or tailor your cooling experience by monitoring temp, humidity and customizing your sleep curve function through the DREO app.
  • 𝟯-𝗶𝗻-𝟭 𝗩𝗲𝗿𝘀𝗮𝘁𝗶𝗹𝗲 𝗔𝗖 𝘂𝗻𝗶𝘁: You can not only choose from Cool/Fan/Dry modes this home air conditioner also has three functions to control within each mode, making it perfect for all scenario.
  • Specified Noise Level: 45 dB

This Dreo portable AC aims to provide powerful cooling with minimal noise, thanks to its patented noise isolation system that reduces compressor and turbulence sounds to a reported 45dB. Its portability allows you to easily move it between rooms, and the drainage-free system is designed to evaporate excess water automatically, reducing maintenance. Smart features like app control and voice assistant compatibility add to its convenience. While some users feel it is not the quietest option available, many find it suitable for sleeping, citing a noise level comparable to a normal fan. The Dreo's combination of portability, smart features, and relatively quiet operation makes it a solid choice for cooling smaller spaces.

Dreo Portable Air Conditioners, 12,000 BTU AC Unit for Bedroom

Dreo Portable Air Conditioners, 12,000 BTU AC Unit for Bedroom
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Dreo Portable Air Conditioners, 12,000 BTU AC Unit for Bedroom with Drainage-free Cooling, 46dB Quiet, APP/Voice/Remote, 24h Timer with Fan & Dehumidifier, Smart Standing AC for Room Indoors, AC515S
  • 𝗚𝗼 𝗕𝗶𝗴 𝗼𝗻 𝗖𝗼𝗼𝗹𝗶𝗻𝗴 𝗣𝗼𝘄𝗲𝗿: The DREO AC515S portable air conditioner brings massive 12,000 BTU ASHRAE cooling capacity that reaches up to 16 ft. Helping you keep the comfortable temp in the sweltering summer. Additionally, you can keep the temperature between 65°F to 86°F using various controls to tailor the cooling to your preferences
  • 𝟯-𝗶𝗻-𝟭 𝗠𝗼𝗱𝗲 𝘄𝗶𝘁𝗵 𝗙𝗮𝗻 & 𝗗𝗲𝗵𝘂𝗺𝗶𝗱𝗶𝗳𝗶𝗲𝗿: Get more control of the way you cool thanks to the 3-in-1 mode including settings for cooling, dehumidifying and fan control in one, finding the ideal comfort setting is easier than ever with the DREO room air conditioner
  • 𝗜𝘀𝗼𝗹𝗮𝘁𝗲 𝗡𝗼𝗶𝘀𝗲, 𝗔𝗺𝗽𝗹𝗶𝗳𝘆 𝗖𝗼𝗺𝗳𝗼𝗿𝘁: Featuring a new noise isolation system around the compresor, this portable air conditioners reduces noise down to a minimum 46dB, making it ideal for quiet places like bedrooms and offices
  • 𝗗𝗿𝗮𝗶𝗻𝗮𝗴𝗲-𝗳𝗿𝗲𝗲 𝗶𝗻 𝗽𝗼𝘄𝗲𝗿𝗳𝘂𝗹 𝗰𝗼𝗼𝗹𝗶𝗻𝗴 𝘄𝗵𝗲𝗻 𝘁𝗵𝗲 𝗵𝘂𝗺𝗶𝗱𝗶𝗳𝘆 𝘂𝗻𝗱𝗲𝗿 𝟴𝟱%: Bring uninterrupted cold air to your room, thanks to DREO's new AC unit design, a dedicated condenser and water pump helps transfer excess water and reduces the need for drainage compared to traditional floor air conditioners
  • 𝗦𝗺𝗮𝗿𝘁 𝗖𝗼𝗼𝗹𝗶𝗻𝗴 𝗮𝘁 𝗬𝗼𝘂𝗿 𝗙𝗶𝗻𝗴𝗲𝗿𝘁𝗶𝗽𝘀: Use your favorite voice assistant (compatible with Amazon Alexa or Google Home) or the fully-featured Dreo App to control every aspect of your cooling experience, from multiple modes to fan speeds, timers and schedules, this standing AC has it all
  • Specified Noise Level: 46 dB

The 12,000 BTU Dreo portable AC offers more powerful cooling for larger spaces, while still emphasizing quiet operation with its noise isolation system, targeting a minimum of 46dB. It includes 3-in-1 functionality with cooling, dehumidifying, and fan modes. The drainage-free design minimizes maintenance, and smart features provide convenient control via app or voice assistants. While some users have reported rattling noises, many appreciate its quiet operation compared to other portable ACs. Its combination of strong cooling power, smart features, and relatively quiet performance make this Dreo model a worthwhile consideration, especially if you need to cool a larger room.

LG 5000 BTU Window Air Conditioners

LG 5000 BTU Window Air Conditioners
LG 5000 BTU Window Air Conditioners [2023 New] Easy Mechanical Control Ultra-Quiet Compact-size Cools Washable Filter 150 Sq.Ft. for Small Room AC Unit air conditioner Easy Installation White LW5023
  • [Maximum Cooling] Cooling Coverage up to 150 Square ft. is ideal for cooling small rooms with 5,000 BTU window air conditioner for 1 room or space.Frequency : 60 hertz
  • [Quiet & Easy to Control] LG Air Conditioners operate at sound levels as low as 50dB (low mode). Mechanical controls for AC unit make it easy to enjoy your window air conditioner's settings.
  • [Easy Installation & Cleaning] This AC has a fixed chassis and installs easily in a double hung window with included EZ Mount installation kit; slide-out filter makes cleaning a breeze to keeps your unit running its best when cleaned every 30 days
  • [Easy-to-Clean Washable Filter] Captures particles from the air and keep your dehumidifier working efficiently with our easy-to-clean washable filter. window ac unit aire acondicionado de ventana
  • [Multiple Fan Speeds & Energy Save Function] Two cooling modes and two fan speeds let you customize your cool. Energy Save Function for lower electricity bill, Eco-friendly R32 refrigerant. air evaporative evaporative chill well artic arctic airconditioner swamp cooler conditioner personal cool acon cold frio enfriar aireacondicionado acondicionador fuerte bueno confiable robusto verano window ac unit de ventana aire acondicionado caliente para cuarto airconditoner mini aircon aircondi habitacion airconditi aircondition air condition
  • Specified Noise Level: 50 dB

This LG 5000 BTU model is designed for small rooms and emphasizes ease of use with mechanical controls. LG claims it operates at sound levels as low as 50dB on low mode. It features an easy installation kit and a washable filter for simple maintenance. Customer opinions are mixed regarding noise, with some finding it very quiet while others consider it a little loud. Similarly, cooling performance receives varied feedback. Its compact size and straightforward operation make it a budget-friendly option for cooling small spaces, but be aware that noise levels may not meet everyone's expectations.

EUHOMY Portable Air Conditioners 8,000 Btu

EUHOMY Portable Air Conditioners 8,000 Btu
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EUHOMY Portable Air Conditioners 8,000 Btu, Quiet Portable Cooling AC Up to 350 Sq.Ft. with Dehumidifier, Fan, Sleep Modes, 3-1 AC Unit with Remote Control & 24H Timer for Bedroom, Room, Apartments
  • EFFICIENT AND POWERFUL COOLING CAPACITY: This 8,000 BTU portable air conditioner has an upgraded compressor refrigeration system, and the maximum wind speed can reach 320m³/h. In the hot summer, it can reduce the room temperature to a comfortable temperature for the human body in about 6 minutes. The portable ac can be set to 27 temperatures (60℉-86℉), and you can choose a suitable temperature according to the environment. And it consumes only 0.13KWH of electricity per hour, saving a lot of energy, and is very suitable for living rooms, bedrooms, offices, apartments, renters, etc
  • 3-IN-1 AIR CONDITIONER PORTABLE: In addition to cooling, this air conditioner portable can also be used as a dehumidifier and fan. When it is raining or in a room with high humidity, you can turn the machine on Dry mode (you need to insert a drain pipe after turning it on). It can remove 44 pints of moisture a day, giving you a dry and comfortable environment. When the weather is not too hot, but you need an airy environment, you can turn on the fan mode and enjoy the good mood brought by the natural wind. EUHOMY room air conditioners are committed to improving your home experience
  • EASY TO USE & INSTALL: EUHOMY portable air conditioners do not require drilling for installation, and its size is only 12*26.7*11.4 in. It is also equipped with 4 silky universal wheels and built-in handles, so you can put it anywhere in your home. The filter of this small air conditioner is detachable and washable, and the air outlet is designed without rotating blades, which can effectively prevent children from getting cut
  • CONTROL FROM ANYWHERE: This floor air conditioner comes with a free full-function remote control with a control distance of 23 feet, which means you can control all functions of the portable air conditioner while lying on the sofa or bed or not next to the machine. The large LED display of this standing ac also allows you to know the status of the machine in real time, which is extremely convenient
  • SLEEP MODE & 24 HOURS TIMER: In sleep mode, this portable AC unit will automatically reduce the fan speed to reduce the noise to 52db, helping you have a good sleep. At the same time, this AC unit for bedroom is equipped with a 24H timer, which will automatically shut down when the time you set is reached, saving more energy
  • Specified Noise Level: 52 dB

The EUHOMY 8,000 BTU portable AC offers cooling, dehumidifying, and fan modes in a single unit, designed for rooms up to 350 sq. ft. It boasts easy installation and includes a remote control for convenient operation. A sleep mode reduces fan speed to minimize noise, aiming for a 52dB level. User reviews are mixed on noise performance, with some finding it quiet and others reporting it as loud. While it may not be the quietest option available, the EUHOMY AC provides a versatile and affordable cooling solution with multiple features and easy setup.

LG 8,000 BTU Window Air Conditioner

LG 8,000 BTU Window Air Conditioner
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LG 8,000 BTU Window Air Conditioner, 115V, Cools 340 Sq.Ft. for Bedroom, Living Room, Apartment, Quiet Operation, Electronic Control with Remote, 3 Cooling & Fan Speeds, Auto Restart, White
  • Window Air Conditioner with Low Noise Performance: This ac window unit operates at sound levels as low as 53dB (in low mode) eliminating unnecessary noise; Work without distraction and get a good night's sleep with this quiet window unit
  • Multiple Fan Speeds: 3 cooling and fan speeds with Auto Cool allow you to customize your cooling; Effortlessly adjust the ac window unit air flow to suit your needs
  • Maximum Usability: This window unit ac includes an easy to use digital control panel and remote control; 4-way air deflection gives you ultimate flexibility; Filter light reminder, window installation kit, and a slide-out, washable filter are also included
  • Auto Restart: After a power failure, Auto Restart will automatically turn the ac unit window back on when power is restored
  • Cools Rooms up to 350 Square Feet: LW8016ER is ideal for cooling medium rooms (14' X 25'); With the 350 square feet cooling coverage, keep your bedroom or office comfortably cool with this window unit air conditioner
  • Specified Noise Level: 53 dB

This LG 8,000 BTU window unit targets medium-sized rooms and emphasizes low noise performance, with a claimed sound level as low as 53dB on low mode. It includes multiple fan speeds, auto restart, and a remote control for convenient operation. Customer feedback on noise is mixed, with some finding it super quiet and others reporting it as incredibly loud. Similarly, opinions on value for money are divided. Its cooling ability and ease of installation are generally praised, but potential buyers should carefully weigh the mixed reviews on noise levels before making a decision.

How to Choose a Quiet Room Air Conditioner: The Complete Buying Guide

Are you tired of choosing between staying cool and having a peaceful environment? A noisy air conditioner can disrupt sleep, conversations, and concentration, making even the coolest room uncomfortable.

Finding a truly quiet air conditioner doesn't have to be challenging. This comprehensive guide will help you understand what creates noise in air conditioners and how to select a unit that keeps you cool without the constant hum or rattle.

What Makes Room Air Conditioners Noisy?

Several components contribute to air conditioner noise, with the compressor typically being the primary culprit. This mechanical heart of the cooling system creates vibrations as it pressurizes refrigerant.

Fans are another significant noise source, as they circulate air through the unit and into your room. Poorly balanced or cheap fans can create a persistent whirring or whooshing sound.

Vibrations from loose parts or improper installation often manifest as rattling or buzzing. These noises might start small but tend to worsen over time as components wear.

Airflow restriction from dirty filters or blocked vents forces the unit to work harder, increasing operational noise. Regular maintenance can prevent this issue.

How Air Conditioners Can Be Made Quieter

Manufacturers employ several techniques to reduce noise in modern air conditioners:

Inverter technology allows the compressor to run at variable speeds rather than constantly turning on and off, significantly reducing noise and energy consumption.

Sound-dampening materials inside the unit absorb vibrations before they become audible noise.

Insulated compressor compartments contain the loudest component's noise.

Advanced fan blade designs move air more efficiently with less turbulence and noise.

Anti-vibration mounts prevent mechanical vibrations from transferring to the housing or installation surface.

Understanding Air Conditioner Noise Levels

Air conditioner noise is measured in decibels (dB), a logarithmic scale where even small numerical increases represent significant noise level jumps.

How Loud is Too Loud?

To put air conditioner noise in perspective:

  • Whispered conversation: 30-40 dB
  • Normal conversation: 50-60 dB
  • Vacuum cleaner: 70-80 dB

The quietest room air conditioners operate around 42-45 dB on low settings, comparable to a library's ambient noise.

Average window units typically produce 50-60 dB of noise, while older or lower-quality models might exceed 65 dB.

For bedrooms or offices, aim for units under 50 dB for comfortable ambient noise levels. Sleep experts recommend ambient noise below 45 dB for optimal rest.

Key Features to Look for in Quiet Air Conditioners

Noise-Reducing Technology

Inverter compressors offer the single biggest noise reduction improvement available. Unlike traditional compressors that run at full power or not at all, inverter units adjust their output continuously, eliminating the startling on/off cycling noise.

Multi-speed fans allow you to reduce noise levels when maximum cooling isn't needed. The lowest speed setting is typically much quieter than full power.

Sleep modes automatically adjust operation for nighttime use, often reducing fan speeds and compressor activity during sleeping hours.

Efficient Cooling Features

BTU rating determines cooling capacity. Match this to your room size for efficient cooling without excessive noise from an overworked smaller unit.

Energy Efficiency Ratio (EER) or Seasonal Energy Efficiency Ratio (SEER) ratings indicate how efficiently the unit converts electricity to cooling power. Higher-efficiency units often operate more quietly.

Programmable thermostats prevent unnecessary operation, reducing both noise and energy consumption.

Design Considerations

U-shaped window ACs use your window as a sound barrier, placing the noisiest components outside.

Split systems separate the noisy compressor (outside) from the quiet air handler (inside).

Portable units vary widely in noise levels but offer flexibility in placement that might help minimize noise impact.

How to Choose the Right Quiet Air Conditioner for Your Needs

Assessing Your Room Requirements

Measure your room's square footage to determine the appropriate BTU rating needed:

  • 150-250 sq ft: 5,000-6,000 BTU
  • 250-350 sq ft: 7,000-8,000 BTU
  • 350-450 sq ft: 9,000-10,000 BTU
  • 450-550 sq ft: 12,000 BTU

Consider ceiling height, sunlight exposure, and occupancy when fine-tuning these estimates. Rooms with high ceilings or significant sun exposure may need additional capacity.

Selecting the Right Type

Window air conditioners are typically the most affordable but vary greatly in noise levels. Look for newer models with inverter technology for quieter operation.

Portable air conditioners offer installation flexibility but generally run louder than comparable window units due to having all components inside your living space.

Through-the-wall units operate similarly to window units but with a more permanent installation that can reduce rattling noise.

Mini-split systems offer the quietest operation by placing the compressor outside while the indoor air handler runs nearly silently at 20-40 dB.

Features Worth Prioritizing

Remote controls allow you to adjust settings without approaching the unit, useful when it's installed in awkward locations.

Programmable operation lets you reduce noise during critical times like sleeping hours.

Washable filters simplify maintenance, helping prevent the increased noise that comes with restricted airflow.

Auto-evaporation in portable units eliminates the need for draining condensate, reducing maintenance hassles.

Installation and Placement Tips to Minimize Noise

Optimal Placement Strategies

Install the air conditioner on the shady side of your home when possible to reduce strain on the unit and associated noise.

Place the unit away from bedroom headboards, work desks, or conversation areas where noise would be most disruptive.

Ensure the unit sits on a solid, level surface to prevent vibration-based rattles and wobbles.

Proper Installation Techniques

Follow manufacturer instructions precisely, particularly regarding support brackets for window units.

Use noise-dampening materials such as rubber pads between the unit and installation surface.

Properly seal all gaps around window installations to prevent both air leaks and noise transmission.

Additional Noise Reduction Methods

Install sound-dampening curtains near the air conditioner to absorb some of the operational noise.

Consider acoustic panels on walls near the unit if noise remains problematic.

Regular maintenance including cleaning filters, checking for loose parts, and lubricating fans can prevent many noise issues before they develop.

Price Considerations and Value Assessment

Understanding the Price Range

Budget window units ($150-200) often lack noise-reduction features and may operate at 55-65 dB.

Mid-range models ($200-400) typically offer improved insulation and quieter fans, operating at 50-55 dB.

Premium units ($400-800) featuring inverter technology, enhanced sound dampening, and advanced fan designs can achieve noise levels as low as 42-48 dB.

Mini-split systems ($1,000-3,000 installed) offer the quietest operation but at significantly higher initial cost.

Evaluating Long-Term Value

Consider energy efficiency alongside noise levels. Quieter inverter models often save enough on electricity to offset their higher purchase price within a few years.

Factor in durability and warranty coverage when assessing value. A unit that remains quiet for years offers better value than one that develops noise issues after a single season.

Calculate the full cost including any special installation requirements, particularly for through-the-wall or mini-split systems.

Balancing Budget and Performance

If budget is tight, prioritize inverter technology over other features, as this provides the most significant noise reduction.

Consider seasonal use patterns – investing more in a quieter unit makes more sense in regions with longer cooling seasons.

Remember that sleep quality and comfort have real value beyond the purchase price. A slightly more expensive but significantly quieter unit might be worth the investment for bedrooms.

Final Thoughts on Choosing a Quiet Air Conditioner

Finding a truly quiet air conditioner requires understanding what generates noise, how it's measured, and which features most effectively reduce it.

By carefully matching the unit's capacity to your room size and prioritizing noise-reduction technologies like inverter compressors, you can enjoy cool comfort without disruptive noise.

Remember that proper installation and regular maintenance are just as important as your initial selection in maintaining quiet operation throughout the life of your air conditioner.

With the right quiet air conditioner, you can create a peaceful haven that's both cool and conducive to rest, work, or conversation – proving that you don't have to choose between comfort and tranquility.

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