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8 Best Quiet Air Purifiers

Last updated June 19, 2022

This post may contain affiliate links.

Author
Author avatar Danny Ashton

Danny as been writing about air purifiers for 10+ years. He is a major fan of home technology, which makes him the perfect person to test and evaluate products for HouseFresh

We know that having an air purifier in the home is a great way to reduce pollutants such as dust, bacteria, and unwanted odors, but the noise that some air purifiers make can be off-putting.

If you have young children or a baby, a loud air purifier can cause major disruption to their lives – which is the last thing you need. On average, an air purifier on a low setting emits around 20 decibels (dB) which compares to the sound of rustling leaves. On a high setting, an air purifier can kick out around 60dB, similar to the sound of a normal conversation.

In this list we have chosen the best air purifiers which produce the least amount of noise, making our lives healthier, as well as less irritable and more productive.

To ensure quality and value, one important feature would be that your unit is equipped with a HEPA filter. With an official rating of 99.97%, a HEPA filter is the gold standard in filters capturing all solid particles from dust, pollen, and mold spores. 

The Top 3 Best Quiet Air Purifiers

To find the quietest air purifiers out there, we picked our selection of quiet air purifiers using our internal database of air purifiers based on our own performance tests to look at those that perform well but importantly don’t create a lot of noise for those who are looking for units to be as quiet as possible.

Best Budget Option
Best Overall
Best for Large Spaces
Style
Alen t500
Alen t500
Alen t500
Pros
Cheap to run and our quietest tested
Auto mode with great performance to $ ratio
Austin based company has been making units a long time
Cons
Might be underpowered for large spaces
Hybrid system that uses ionizer to maximise performance
Higher initial costs and fairly high filter costs
CADR
32 CFM
120 CFM
347 CFM
Technology
360° VortexAir Technology 3.0 and 3-stage filtration (pre-filter, True HEPA filter, Activated Carbon filter)
3-stage True HEPA filter with activated charcoal
B7 Pure filter, H13 True HEPA filter
Recommended Room Size
Up to 178 ft²
185 ft²
Up to 1,300 ft²
Weight
2.2 lbs (1 kg)
2.4 kg / 5.3 lbs
27 lbs (12.2 kg)
Price
$44.99
$114.99
Best Budget Option
Style
Alen t500
Pros
Cheap to run and our quietest tested
Cons
Might be underpowered for large spaces
CADR
32 CFM
Technology
360° VortexAir Technology 3.0 and 3-stage filtration (pre-filter, True HEPA filter, Activated Carbon filter)
Recommended Room Size
Up to 178 ft²
Weight
2.2 lbs (1 kg)
Price
$44.99
Best Overall
Style
Alen t500
Pros
Auto mode with great performance to $ ratio
Cons
Hybrid system that uses ionizer to maximise performance
CADR
120 CFM
Technology
3-stage True HEPA filter with activated charcoal
Recommended Room Size
185 ft²
Weight
2.4 kg / 5.3 lbs
Price
$114.99
Best for Large Spaces
Model
Style
Alen t500
Pros
Austin based company has been making units a long time
Cons
Higher initial costs and fairly high filter costs
CADR
347 CFM
Technology
B7 Pure filter, H13 True HEPA filter
Recommended Room Size
Up to 1,300 ft²
Weight
27 lbs (12.2 kg)

We have used our in-house performance data to identify the best choices when it comes to quiet air purifiers that won’t wake you up at night. Keep reading for the full list of units our team has tested.

1. Levoit Core Mini 

The Levoit Core Mini is a perfect little unit for small spaces to have around your home. This product is a lot smaller than other units and has the lowest noise level at the highest power at just 44db, which is the same as a bird call. This well-constructed, premium-built unit is perfect for picking up indoor pollutants and blends perfectly within your home.

The Core Mini may not pack as much of a punch compared to other Levoit units but there are some great features that give this product unique originality such as a three-stage filter system. This unit is cleverly crafted with a pre-filter, HEPA filter, and an activated carbon filter for odors and VOCs

Regardless of its size, it still refreshes the air 2x per hour in rooms up to 178 square feet and can help remove harmful pollutants such as dust mites, pollen, and other indoor contaminants. This product also features an aromatherapy pad located near the top of the unit, simply add essential oils, take in the calming mist, and unwind after a long day.

SPECS & FEATURES

Purifier technology:360° VortexAir Technology 3.0 and 3-stage filtration (pre-filter, True HEPA filter, Activated Carbon filter)
CADR (CFM / m³/h):32
Recommended room size:178 sq. ft. 
Filter life:4-6 months
Noise level (low – high):25 – 44dB
Dimensions (in inches / in cm):6.5L x 6.5W x 10.4H in / 16.4 x 16.4 x 26.4 cm
Weight (in pounds / in kg):2.2 lbs (1 kg)
Energy consumption:$15.21 per year

What We Really Like: 

👍 It is quiet even on the higher settings (44db)
👍 At full power the energy use is quite low as well (7 watts)
👍 The aromatherapy pad is a great addition
👍 Slick design, perfect for kitchens and home offices

What We Think Could Be Better:   

👎 The ideal room size is quite small (178 sq. ft.  / 17 m2)
👎 Auto Mode could react faster to air quality changes

2. Blueair Blue Pure 411+

The Blueair Pure 411 was no stranger in the air quality market, the 411+ however, builds on an already tremendously sturdy unit. It’s super easy to move around your home and has some stunning features to help deal with household contaminants. The Blue Pure 411+ comes installed with a 3-stage filtration system which includes a washable pre-filter, HEPA filter, and an activated carbon filter for odors and harmful gasses.

Similar to its predecessor, the 411+  is installed with HEPAsilent technology, this type of HEPA works just the same but produces less noise output than other HEPA units. Its noise level on the lowest setting is 17db and on the highest setting 46db which is considered as loud as a dishwasher’s hum. 

Although the 411+ and the 411 both share the same size, noise output, and filter technology, there are a couple of new and improved features that maximize this unit’s potential. The 411+ has a higher performance efficiency than its original model with an increased Clean Air Delivery Rate (CADR) which extends room size capabilities from 150 sq. ft to around 200 sq. ft. The Blueair Blue Pure 411+ also impresses with a new auto mode which can determine the air quality of your room with just one push of a button.

SPECS & FEATURES

Purifier technology:3-stage True HEPA filter with activated charcoal
CADR (CFM / m³/h):120 CFM 
Recommended room size:185 sq. ft. 
Filter life:6 months
Noise level (low – high):17 – 46dB
Dimensions (in inches / in cm):17H x 7.8W x 7.8D inches (43.18H x 19.812W x  19.812D cm)
Weight (in pounds / in kg):XX lbs (XX kg)
Energy consumption:$21.72 per year

What We Really Like:
👍  Its slick, clean, and minimalist design really blends in well with the house
👍  The pre-filter fabric is unique and comes in different colors 
👍  The HEPAsilent technology is super quiet and exclusive to Blueair
👍  Really versatile unit – great unit for bedrooms, kitchens, living rooms, and even the garage

What We Think Could Be Better:
👎  We wish the night mode was automatic. LEDs are bright so you need to manually move it out of night mode to the low fan setting.
👎  The area of coverage is too small

3. Alen BreatheSmart 75i

For a larger unit, the Alen 75i surprises most with its low noise output. On the lowest setting, this unit produces just 25db and at the maximum fan speed 49db. With an astounding coverage area of 1300 sq. ft, this purifier will capture dust, allergens, pollen, fur, pet dander, household odors PLUS smoke from cigarettes, wildfires, and hazardous VOC fumes. The Alen 75i features a SmartSensor that measures the air quality, when placed in auto mode the fan speed will change whenever necessary. Go about your daily routines and let this great unit do what it does best.

Generally, the best air purifiers on the market come equipped with HEPA and Activated carbon filters which work brilliantly in conjunction with one another. The Alen 75i however, takes filtration to another level with a True HEPA (H13) filter which is known to remove 99.99% of indoor pollutants, leaving only those smaller than 0.1 microns. In addition to the True HEPA and activated charcoal filters, another surprising feature is the 75i’s Ionizer which enhances particle attraction with the push of a button. 

SPECS & FEATURES

Purifier technology:B7 Pure filter, H13 True HEPA filter
CADR (CFM / m³/h):347 CFM 
Recommended room size:1,300 sq. ft. 
Filter life:6-8 months
Noise level (low – high):25 – 49dB
Dimensions (in inches / in cm):27H x 18.5W x 11.5D inches (68.58H x 46.99W x  29.21D cm)
Weight (in pounds / in kg):27 lbs (12.2 kg)
Energy consumption:$97.76 per year

What We Really Like:

👍  Low noise output for a larger unit 
👍  The smart sensor measures air quality brilliantly 
👍  Filters last a little longer than other units
👍  Has a fantastic coverage area of 1300 sq. ft.

What We Think Could Be Better:

👎  Wish it was a bit smaller as it’s quite a large unit, making it hard to move around all the time 
👎  It is on the expensive side of air purifiers

4. LEVOIT Core 300S

With the Core 300S you get an innovative and versatile air purifier that is compact yet capable of cleaning the air in a room of roughly 219 sq. ft. This unit is perfect for offices, bedrooms, and nurseries as it’s lightweight, meaning easier to move around. 

Being an improvement on the Core 300, the Core 300s features a great smart feature that allows you to connect your unit to your phone or tablet and adjust the settings as you see fit.

For cleaner air, it has a 3-stage filtration system. Stage 1 is the preliminary filter to take in large particles, this is proven to help increase the HEPA filter life by not putting so much pressure on it. Stage 2 is the True HEPA filter to capture finer particles such as dust and pollen. Stage 3 features a high-efficiency activated carbon filter to handle household odors and hazardous VOCs.

This highly energy-efficient unit features a Sleep Mode function that runs the machine at the lowest fan speed to keep the air clean without disturbing your sleep since it operates quieter. It’s known to last longer too thanks to the brushless motor that makes it more stable by cutting down the chance of overheating.

The timer settings make it even more convenient so you can set it to run only for two, four, or eight hours. Afterward, it can automatically shut off so that it doesn’t run all day or all night.

SPECS & FEATURES

Purifier technology:H13 True HEPA filter
CADR (CFM / m³/h):141 CFM 
Recommended room size:219 sq. ft. 
Filter life:6 – 8 months
Noise level (low – high):24 – 48dB
Dimensions (in inches / in cm):8.7L x 8.7W x 14.2H inches (22L x 22W x 36H cm)
Weight (in pounds / in kg):5.95 lbs (2.7 kg)
Energy consumption:$56.48 per year

What We Really Like:

👍  360° side air intake for purification at all sides
👍  Warm night light with two brightness levels
👍  Top control panel that’s easy to access
👍  Safe design makes it useful for kids’ rooms

What We Think Could Be Better:

👎  Might dry the air out too much if left on long
👎  You have to replace the filters often

5. Hathaspace HSP001

The Hathaspace HSP001 uses an emphatic 5-stage filtration system combined with an innovative ionizer. Cold Catalyst, Cellular-Activated Carbon, Antibacterial, and True HEPA Filters are what make this machine a true powerhouse in the air purifier market.

The control panel consists of 6 buttons that operate the timer, fan speed, power, sleep, anion, and light button. Suitable for rooms up to 350 sq. ft, the Hathaspace HSP001 noise operation from lowest speed to the highest is 18db – 43db which means this unit is super quiet to have around the house.

Although this product doesn’t come with a smart app to connect to your phone, it does include a handheld, easy-to-use remote control that will allow you to adjust your settings from your couch or while you cook. The HSP001 also includes an air quality sensor that works brilliantly when in auto mode, simply allowing your unit to detect levels of air quality in your home and adjust its fan speeds when necessary.

SPECS & FEATURES

Purifier technology:Cold Catalyst Filter, Cellular-Activated Carbon, Antibacterial and H11 True HEPA Filter
CADR (CFM / m³/h):94 CFM 
Recommended room size:350 sq. ft. 
Filter life:4 months
Noise level (low – high):18 – 43dB
Dimensions (in inches / in cm):13.5L x 7W x 20H inches (34.29L x 17.78W x 50.8H  cm)
Weight (in pounds / in kg):5.4 kg / 12 lbs
Energy consumption:$86.90 per year

What We Really Like:

👍  The 6 button control panel is easy to understand and great for a variety of modes 
👍  Uses an outstanding 5 five-stage filter process 
👍  Extremely low noise output on the highest setting
👍  Great unit for multiple indoor contaminants such as dust, pet hair, and odor 

What We Think Could Be Better:

👎  The quality of the plastic could be improved
👎  The life of the filters could be longer

6. Medify MA-14 

The Medify MA-14 has a ton of great features for a budget unit and operates at a great decibel level on its lowest setting of 21db. At its maximum fan speed, the noise level is 48db. The MA-14 weighs in at only 5.3 Ibs, making it a great air purifier to easily transport around your house and place in multiple rooms.

The Medify MA-14 uses a 3 stage filter system that is made of a true HEPA (H13) filter, that helps capture 99.9% of indoor contaminants, an activated carbon filter for VOCs and household odor, and a handy protective pre-filter that helps capture larger particles such as hair and dust to truly maximize the HEPA filter’s full potential. 

With a recommended coverage area of 200 sq. ft, the MA-14 will cleanse your room from contaminants within 30 minutes. Features include a control panel that displays a filter replacement indicator, night light, and fan speed with sleep mode, giving this unit an easy-to-use simple approach.

SPECS & FEATURES

Purifier technology:Pre-filter, H13 True HEPA, active carbon composite
CADR (CFM / m³/h):70 CFM 
Recommended room size:117 – 470 sq. ft. 
Filter life:3-4 months
Noise level (low – high):21 – 48dB
Dimensions (in inches / in cm):12.20H x 8.26W x 8.26D inches 30.988H x 20.9804W x 20.9804D  cm)
Weight (in pounds / in kg):2.4 kg / 5.3 lbs
Energy consumption:$56.48 per year

What We Really Like:

👍  Cleans 200 square feet in just 30 mins 
👍  Night light feature is a really nice touch
👍  Filter indicator will let you know when your filters need replacing
👍  Great design, small, sleek, and easy to move around your home 

What We Think Could Be Better:

👎  Because of the size the carbon filter takes a bit longer to remove odor 
👎  Instructions could be a bit more informative

7. Coway Airmega 150 

When it comes to Coway units, you normally end up getting a healthy assortment of features that you would normally pay extra for with other products. This nifty smaller air purifier is great for all spaces around your home, it’s perfect for bedrooms, closets, bathrooms, and living rooms. The Airmega 150’s quiet operation can go as low as 19.9db with a maximum noise output of 48.3db, making it great to have around the house. Leave your unit running whilst watching a movie or having a nap.

The Coway Airmega 150 offers a great 3-stage filtration system. This includes a washable pre-filter to help capture larger particles, a deodorization activated carbon filter, and a True HEPA filter that can remove 99.9% of indoor pollutants. Accompanied by great filtration the Airmega 150’s pollution sensor does a great job informing you how clean or dirty your indoor air is with brightly colored LEDs. 

Coway Airmega 150’s three fan speeds allow you to adjust your unit to the correct setting to what’s necessary and also includes an auto mode that optimizes fan speed based on how contaminated the air is. In auto mode when no pollution is detected, it enters low noise mode which is fantastically energy efficient.

SPECS & FEATURES

Purifier technology:Pre-filter, Deodorization filter, Green True HEPA™ Filter
CADR (CFM / m³/h):160 CFM 
Recommended room size:214 sq. ft. 
Filter life:1 Year
Noise level (low – high):19 – 48dB
Dimensions (in inches / in cm):13.4W x 18.5H x 6.5D inches 34.036W x 46.99H x 16.51D (cm)
Weight (in pounds / in kg):5.5 kg / 12.1 lbs
Energy consumption:$76.04 per year

What We Really Like:

👍  Features a 4-level intuitive indicator that measures air quality in the room  
👍  Auto Mode impressively recognizes what fan speed is necessary for your home
👍  Great instructions for how to clean your unit
👍  Aesthetic and design is perfect for your home

What We Think Could Be Better:

👎  Wish it came with a night light feature 
👎  Filters are a little hard to get hold of so you might need to plan ahead

8. Blueair Blue Pure 411

The Blueair Blue Pure 411 has the distinctive HEPASilent filtration technology that utilizes less energy and makes less noise compared to other similar air purifiers. It filters out the air roughly every 12 minutes to quickly improve the air quality in small spaces. This makes it perfect for apartment use or for use inside larger homes in bedrooms and nurseries. This is done by using 4 stages of filtration.

With the first stage, you get the pre-filter that can be washed rather than replaced for long-term use. This catches bigger particles floating around in time for the second stage, the HEPASilent technology stage, which uses electrostatic filtration to remove tinier particles. Then there’s the particle filter to capture airborne germs, and lastly is the activated carbon layer for light odors.

On the lowest setting, it’s known as one of the quietest air purifiers around, making it ideal for use at nighttime. It is even highly eco-friendly since it can run all day long without worrying about raising your energy bills. Also, with a 360° air intake, you can place this in any direction and still receive the same efficiency.

Knowing when to change the filter for maintenance is simple thanks to the built-in LED warning system that will glow red. The general LED function will dim after about seven seconds. Although the 411 doesn’t feature an auto mode as the updated 411+ unit does, it still performs to a great standard and features the all-important HEPAsilent technology. With more features the price does rise so the 411 is the best choice if you are watching your budget. 

SPECS & FEATURES

Purifier technology:washable pre-filter, particle and activated carbon filter, HEPASilent™ filtration technology
CADR (CFM / m³/h):120 CFM 
Recommended room size:161 sq. ft. 
Filter life:6 months
Noise level (low – high):17 – 46dB
Dimensions (in inches / in cm):16.7H x 8W x 8D inches (42.418H x 20.32W x 20.32D  cm)
Weight (in pounds / in kg):5.3 lbs (2.4 kg)
Energy consumption:$21.72 per year

What We Really Like:

👍  Can customize using 6 pre-filter color options
👍  Simple 1-button operation
👍  Small and sleek to remain unobtrusive
👍  Causes a noticeable difference in air quality in a short amount of time

What We Think Could Be Better:

👎  Lacks a timer function
👎  No automatic fan speed adjustment

What You Need to Know Before Buying a Quiet Air Purifier

🤔 What do air purifiers do?

Air purifiers, otherwise referred to as air sanitizers, do precisely what their name implies: they purify the air. They do this by capturing particles of various sizes such as dust, pollen, dander, spores, bacteria, and more. Although this can help the general population, people that suffer from allergies or babies and children can largely reap the benefits of a quality air purifier.

They can function in numerous ways as some have several stages of filtration with different filters serving separate purposes. Others rely on electrostatic technology or even UV technology to get the job done. Depending on the filters, some serve better at also eliminating odors in the air while others focus more on obvious things like dust.

🤔 What is a True HEPA filter?

Before we get into this type of filter, let’s break down its name. HEPA is an acronym for High Efficiency Particulate Air. It is deemed the highest standard in terms of air filtration. They must remove about 99.97% of particles in the air.

Now, in terms of “true HEPA” filters, this means that they actually meet the requirements of what they should remove. Many filters refer to themselves as HEPA without actually proving they can remove such particles from the air, but with a True HEPA filter, you know it’s as efficient as it claims to be.

🤔 Are air purifiers loud?

Generally, air purifiers don’t make much noise, producing a level similar to many common household fans. Most people would consider them to release ambient noise, so it may not bother everyone. The noise does vary, however, depending on the fan inside the unit.

Many have multiple fan speeds, and the lowest speeds tend to be the quietest. Also, how loud an air purifier may or may not be further depends on the specific model. Many have a Sleep Mode function that allows it to go into whisper-quiet operation so that it’s barely heard.

🤔 What does 20 decibels sound like?

Sound is measured in decibels, also abbreviated as dB. Normal breathing produces around 10 dB. Meanwhile, a washing machine can reach up to 70 dB and the likes of fireworks can reach up to a huge 150 dB.

In general, you don’t want anything over 85 dB or so constantly in your house. Thankfully, many quiet-operating air purifiers are around 20 dB on the lower settings. This places them just above regular breathing.

🤔 So… What quiet air purifier is the best option for you?

Air purifiers can work wonders at making the air in your home cleaner and easier to breathe in. Typical ones can produce the same, or slightly higher, level of noise produced by a common house fan. Not everyone can or wants to deal with such noise though.

For instance, if you want to run your purifier at night, something quieter can make it easier to sleep. Or perhaps you’re in a home with children or babies and the sound can startle them. That is where a quality and quiet air purifier can come in and help make your air better without you having to deal with a bunch of noise.

Thankfully, there are many top-rated quiet air cleaners on the market. With our article, you’ll hopefully find the right one for your home. 

SOURCES

Monthly energy consumption costs have been calculated using our air purifier electricity usage calculator, which allows us to calculate daily and yearly costs associated with running an air purifier for 24hs a day. You can customize the result by air purifier wattage and by state. In the case of the calculations we shared on this page, we used California as our base state for energy prices.

Last update on 2022-06-19 / Affiliate links / Images from Amazon Product Advertising API