Updated at: 22-11-2022 - By: Sienna Lewis

In the market for a central air conditioner that runs as quietly as possible?

If you want to know how loud a speaker is, you should check its decibels (dB) rating. The quieter the AC is, the lower the decibel rating it has.

On Carrier’s website, you may compare the dB (sound) levels of the quietest ACs. The dB level of the Infinity 19VS shows that it is quieter than the Infinity 21.

Noise should be kept to a minimum by window air conditioners. Since the window ACs are elevated and in close contact with a hard window sill, whatever noise they generate will reverberate throughout the room. This is why window ACs are so annoying to have in a home.

In terms of noise, wall-mounted air conditioners aren’t the loudest, but they’re not the quietest either. If you choose the wrong type, you could end up with a window AC unit that is more than 70 decibels loud, which is anything but serene.

Smartly selecting the quietest window air conditioner makes a lot of sense. When it comes to deciding on a quiet air conditioner, it may seem simple:

Just look at 100 window air conditioners, check their decibel levels (it’s usually an interval; Example: 54-62 dB) on the specification sheet, and select the unit with the lowest noise levels..

This is exactly how we came up with our list of the quietest window air conditioners in 2022..


Noise reduction isn’t the only consideration.

A silent window air conditioner, for instance, barely produces 52 decibels of noise at its peak fan speed. EER is 9.0; BTU capacity is below average; and it’s made by a company notorious for malfunctions. If you’re looking for a window air conditioner with low noise levels, this one isn’t it.

How Many Decibels Is A Quiet Air Conditioner? 3 Best Features! - Krostrade

Choosing an ultra-quiet window air conditioner will have the following effects:

  1. High electricity costs that aren’t necessary (low EER rating).
  2. Inadequate cooling power (subpar BTU capacity).
  3. Window AC’s shorter life expectancy (known malfunctions).

To summarize, the finest window air conditioners should not only be the quietest, but they should also meet other crucial criteria, such as being one of the most energy efficient.

For 2022, LearnMetrics identified the nine quietest window air conditioners by taking into account both of these factors. If you’re pressed for time, you may skip forward to the next section by clicking here:

Things must be prioritized before anything else. As part of our investigation into ultra-quiet air conditioners, we’ll take a closer look at the parts of window air conditioners that make noise.

In addition to checking the noise levels (measured in decibels) you need to examine before selecting a quiet window air conditioner, we will also look at some secondary parameters. EER rating, cooling capacity (BTU), coverage, ventilation, and dehumidification rate are a few of these features.

Do window air conditioners really make a difference in terms of noise pollution?

You’ll see that we used the phrase “as low as.” In other words, it’s the quietest size within each model group at a modest fan speed that achieves the lowest decibel level.

Finding the quietest air conditioners

The quietest air conditioners now available operate in the 50-60 decibel (dB) range. On the quietest AC list as of 2015 are:

  • dB (decibels): Carrier Infinity 19VS
  • The Dave Lennox Collection XC25 – 59 dB
  • 55 dB American Standard Platinum ZV

Understanding air conditioner sound levels

The numbers, on the other hand, are a mystery. How many decibels are 65 and 56? How can you tell if the AC is quiet enough for your needs?

Examples of noise sources at each decibel level can be found in Purdue University’s Chemistry Department:

  • Quiet discussion in the house at 50 dB (about one-fourth as loud as at 70 dB).
  • 60 dB (about half as loud as 70 dB, which is a calm volume) — A restaurant conversation
  • In the upper 70s (annoyingly loud), vacuum cleaners are running.
  • TWO TIME AS LOUDER THAN 70 BARS — A garbage disposal is running.

You should look for an AC that’s between 50 and 60 decibels if you want a quiet one.

Finding features that reduce sound

If you’re having trouble determining the AC’s decibel level, seek for these indicators of quietness:

  • Depending on your personal preferences, the indoor unit’s fan can be set to operate at a variety of speeds. There are numerous benefits to doing this, including a reduction in energy costs and a quieter AC.
  • It is a separate chamber or enclosure that covers the compressor in order to decrease the outdoor unit’s sound.
  • In order to lessen the exterior unit’s noise, a fan blade design has been implemented.
  • Pan beneath the air conditioner that reduces noise and resists corrosion is known as a “insulated foundation pan.”

How AC size and fan speed affect sound levels

Two things are implied by any sound rating:

  • The AC unit’s size determines how quiet it will be (probably a smaller size). “Tons” are the standard unit of measurement for size.
  • The air conditioner’s internal fan is set to the lowest speed.

To put it another way, the advertised dB (dB) is the AC operating at full power.

As a result, if you have a large home and reside in a hot climate like Florida, the AC you buy will likely be louder than stated.

How do you know which AC size you need?

Manual J Heat Load Calculation on your property must be done by a professional AC installer.

As part of an air conditioner installation estimate, most respectable HVAC companies will perform this for you free of charge.

Isn’t that nice? You’re under no obligation to accept the first offer you receive or to continue looking for another.

Get a free AC installation estimate

Do you need an AC installation in the Sarasota, Florida, area? Make an appointment for a no-obligation consultation with Cool Today.

Since 1963, Cool Today has been a premier air conditioning company in Florida.

Which Type of Air Conditioner is the Quietest? - H & H

What Makes Window Air Conditioners Silent? (Or Loud)

An air conditioner with a low decibel level is described as “silent.”

A quiet window AC unit is one that is less than 60 decibels (dB) in volume. While operating at 100% cooling power, whisper-quiet machines such as the #1 TOSOT Tranquility operate at less than 50 decibels (dB).

Checking out the parts that are causing the most noise can help us reduce noise levels in any device.

Noise Generators

Window air conditioners produce three types of noise: low, medium, and high.

  1. Compressor. Typically the most obnoxious area. Rotary compressors are particularly obnoxious due to their noisy ‘kick-in’ thrumb. Inverter compressors are used in quiet window air conditioners.
  2. Airflow. As the airflow increases, the noise level rises as well. That’s why window air conditioners with more than 12,000 BTUs are louder.
  3. Vibrations at all. Window Vibrations can be caused by unbalanced AC units since they are installed on a hard window sill. There will be a lot of noise if the AC housing hits the window sill regularly.

Engineering Rules To Create A Quiet Window AC Unit

Engineers merely have to recognise and limit these three noise sources in order to build a silent window air conditioner. In this manner:

  1. Installing a compressor with an inverter. With inverter compressors, window air conditioners are significantly quieter than those with rotational compressors (3-6 dB difference).
  2. Creating a low-flow window AC unit with a strong cooling impact. There is a reduction in temperature, and consequently a reduction in BTUs (British Thermal Units) required to provide the same cooling effect (measured in BTUs).
  3. Vibrations can be avoided with a well-balanced window air conditioner. Units with symmetrical layouts are desirable.

2 DIY Measures That Additionally Lower Noise Levels

Following these guidelines will lead you to the best silent window air conditioners. Additionally, you can do two things to reduce window air conditioner noise:

  1. To get the most out of your AC, get a larger capacity unit and operate it at a lower speed. An 8,000 BTU with noise levels of 52-56 dB is needed to chill a 350-square-foot room. Due to its rapid speed, it will produce 56 dB of noise. In the same room, you may chill it with a 10,000 BTU silent window AC unit at 54-58 dB noise levels by operating it at low speed.
  2. Insulation foam can be used to reduce the noise caused by vibrations. It’s a measure anybody can understand. Foam does not greatly reduce the total effective noise levels of the compressor, contrary to what some people believe.

Maintaining a quiet operation of the window air conditioner may necessitate additional steps. An annual or biannual cleaning of filters, coils, and the compressor is one of these.

While regular cleaning of the window air conditioner’s nooks and crannies is necessary to prolong its life, it has little effect on reducing noise.

Specs To Look For In Addition To Window AC Unit Decibel Levels

As previously mentioned, even the most whisper-quiet air conditioner should be able to provide adequate cooling. Also, it should be:

  • Energy-efficient. It makes no sense to waste energy and money on a noisy, inefficient air conditioner when there are lots of quiet, 10+ EER window air conditioners available.
  • It’s more than adequate. A window air conditioner that is too small and quiet can shorten its lifespan and need constant use at full power, resulting in a higher utility bill (maximum noise levels).
  • Reliable. Low-noise window air conditioners such as those made by TOSOT, Haier, and Frigidaire are among the most trustworthy.

Energy-Efficiency Of Quiet Window AC Units

EER is a measure of how energy-efficient a window air conditioner is (Energy-Efficiency Ratio). It is possible to save up to $100 per season if you have a high EER grade. A short look at the energy efficiency of silent window AC units is provided by the following numbers:

  • Those with an EER rating lower than 8: Inefficient use of energy.
  • Between 8 and 10 is considered “standard” in terms of energy efficiency.
  • EER ratings of 10 or more are considered to be the most efficient.

You can see from the table below that all of the ultra silent window air conditioners have an EER rating of up to 12.1.

For Silent Operation, Choose A Bigger Window AC, And Run It On Low Fan Speed Setting

Windows AC units’ cooling capacity is measured in BTUs (British Thermal Units). Window air conditioners with low noise output range in size from 5,000 BTU to large 18,000 BTU models.

What is the best way to size a window air conditioner so that it is the quietest?

The EPA recommends the following:

“On average, for every square foot of living space, an air conditioner uses 20 BTU.”

Using 25 BTU or even 30 BTU (to be safe) per square foot can assure silent operation (allowing you to use a window air conditioner at lower noise speeds).

If you want your window AC to run quietly, you’ll need one of the following sizes:

Are Quiet Window Air Conditioners Reliable?

Most window air conditioners have a useful life of between ten and twenty years. AC units with lower noise levels have a longer lifespan. The use of inverter compressors and reduced vibrations extend the life of quiet window air conditioners.

The quality of a particular piece of equipment is strongly linked to its brand. Window air conditioners made by well-known companies as TOSOT, LG, Frigidaire, and Haier are known for their dependability and quality. They are dependable. A well-known and trusted brand is your best bet.

Regular maintenance is essential if you want your quiet window air conditioner to last longer than a decade. Clean the filters, coils, and compressor once a year for quiet window air conditioners, like the louder models.

With this in mind, let’s take a look at quiet and reliable window air conditioners:

Best Quiet Window AC Units Currently On The Market

In no particular order, here are the top window air conditioners that are completely silent. You can run the greater 10,000+ BTU units at a lower speed and yet have the same cooling impact as the smaller 5,000-8,000 BTU units, making them a superior option:

How AC sound level is measured

Decibels are used to measure the noise level of air conditioners (dB). According to our earlier discussion, the quieter the air conditioner is, the lower its decibel rating.

ACs that fall into the 50–60 dB range are the quietest, but what does 50–60 dB sound like?

Listed here are some typical 50-60 decibel situations:

  • 50 dB is the decibel level of rain.
  • 55 dB is the decibel level of the sound of coffee being brewed.
  • In the range of 50–60 dB, an electric toothbrush’s sound
  • A normal discussion has a decibel level of 60.
  • 60 dB is the decibel level of a sewing machine in operation.

It’s possible to hear some of these sounds, like rain, if you’re deliberately listening for them, but if you’re acclimated to this level of noise, you probably won’t notice it in your daily life. Is the sound of brewing coffee, for example, loud enough to wake you up in the morning, or does it blend in? Both, or perhaps neither?

In our opinion, an AC system with this decibel rating is likely to be quiet enough that it won’t interfere with your everyday routines.

Air Conditioner Noises: What Causes Them & How to Fix Them

The quietest AC units

Manufacturers use decibel numbers to describe the noise level of the AC unit’s inside unit, not its outdoor counterpart. The decibel ratings of a handful of the most popular air conditioner manufacturers and models will be compared below:

  • For as low as 51 dB, the Carrier Infinity® 26 Air Conditioner with Greenspeed intelligence is available from Carrier
  • SEER YXV 21 An Air Conditioner with Variable Capacity: 53 dB
  • TruComfortTM Variable-speed Trane XV18 As low as 57 dB.
  • Variable-Capacity Lennox Air Conditioner: 59 dB

Indoor unit noise is measured in decibels (dB) and these ACs are operating at their best. As a result, the actual decibel level can vary by as much as 10+ db from the quoted level.

The dB level of most manufacturers may be found on their websites under the unit specifications (see below).

Other AC elements that contribute to a quieter AC system include the following:

  • Your AC’s indoor unit features a blower fan with a variable speed that moves air around your house. Variable-speed blowers, which operate at varying speeds, are common in the quietest air conditioners. In addition to reducing noise, this feature also enhances comfort and lowers energy usage.
  • The design and form of the fan blades reduces the noise, making your overall system sound quieter.
  • There are a number of things you can do to keep the noise of an AC compressor out of your house, including insulating and mounting it. Additionally, there are compressor mounting materials available that help keep your air conditioner as quiet as possible when it is in use.

AC units that are large (in tons) produce a louder sound than smaller units. The noisier the air conditioner, the larger it is.

As a result, you are unable to influence the size of your air conditioning unit. This means you may want to consider some of these noise reduction options if you have a larger house and require a larger air conditioning system.

Other factors to consider when choosing an AC

When it comes to selecting a central air conditioner, homeowners might get hung up on details like noise levels or the AC brand.

Instead of concentrating on the volume or the name of the company, we recommend that you ensure:

  • Is your air conditioner sized correctly?

If you want your home to be effectively cooled by your air conditioner, you’ll need to make sure it’s the suitable size. If your AC unit is too small, it could end up costing you a lot in monthly energy bills, not chilling your home adequately, and eventually, breaking down before its “time.”

So, how do you figure out what size air conditioner you need for your home? In order to calculate Manual J Load you’ll need an expert. A variety of parameters, such as the size and design of your house, its insulation, and the environment where you live are all taken into account in this estimate.

The Manual J calculations and AC sizing can be learned more about here: Do I Need A Large Or Small Central Air Conditioner?

  • To have the air conditioner installed, you need a reputable contractor.

To make sure that your AC system is as quiet as it can be, it’s important to do your homework and get the most qualified contractor available. Even the quietest AC might become loud if it is installed incorrectly or if the job is rushed. Choosing an expert firm or contractor is the best way to ensure that your AC is installed correctly. This may be accomplished by looking at customer reviews, company guarantees, and the number of years the company has been in business in your area.