Best Air Purifier 2022 – Top Reviews for Allergies, Pets, Mold Air Cleaners

Best Air Purifier

Are you looking for the best air purifier 2022 to breathe in clean air while sitting at your home? Is your air purifier good for inhaling or has the best air quality, and no issue with EMF emission and noise? Air pollution is becoming a significant concern for this human race. Fresh air cycling is highly essential for our homes. Indoor air pollution can easily reach five times higher than outdoor.

A good air purifier can help you breathe in quality air and save you from indoor pollution. We know that it is challenging for you to find the best-rated air purifier that effectively cleans the air, improves life, and has an attractive design. You should have an air cleaner with a suitable price range that you can place in every room at your home.

Our professional team will provide you a comprehensive guide of the top 10 air purifiers through the pros and cons of each air purifier. We believe that air purifiers are becoming the necessity of every home. Therefore, we will give you the best air purifier in 2022 that removes airborne particles, cleans the air without noise, and in all price ranges.


Our Top Picks

Best Overall
Best Seller

Best Air Purifier 2021 - Top Reviews for Allergies, Pets, Mold Air Cleaners


Can a Best Air Purifier Protect You from COVID-19 in 2022?

Air purifiers are equipped with a True HEPA filter, activated carbon filter, ionizer, and pre-filter for removing germs, bacteria, and viruses. The True HEPA filter can eliminate 99.97 % of small airborne particles like mold, spores, mildew, pollen, pet dander, and other allergens. These filters are designed to trap the tiny particles that are floating in the air.

If you run your air purifier all day in your home, there are plenty of chances to kill most of the germs and viruses in the air. On the other hand, COVID-19 spread from person to person. So for better protection, you need to wear gloves and a face mask. I highly recommend installing an air purifier in your room, bedroom, or apartment because it is the best and safest solution for killing germs and viruses around you.

Do Air Purifiers Work for Wildfire Smoke?

Yes, air purifiers effectively absorb cigarette smoke and wildfire smoke, depending on the filtration system. Smoke contains tiny particles that are dangerous for health, especially for the lungs and heart. Moreover, smoke can irritate the eyes, throat, and problems in breathing. For dealing with these issues, you need an air purifier with a HEPA filter and activated carbon filter. The HEPA filter eradicates 99.97 % of tiny fine particles in smoke so you can breathe in clean air. The activated carbon filter absorbs smoke, bad smell, and VOCs. If you are living in an area affected by wildfire, then you should buy the best HEPA air purifier with an activated carbon filter

List of Best Air Purifiers 2022

Our Latest Air Purifier Comparison is as follows,
 ModelDimensions (inches)Max. Noise Level (dB)Power (W)Area (sq.ft.)RatingPrice
Germ Guardian True HEPA Filter Air Purifier AC4825Germ Guardian10.25" x 6.75" x 21.5"5553167⭐⭐⭐⭐⭐
LEVOIT LV-H132 Purifier with True HEPA FilterLEVOIT LV-H132 8.5 x 8.5 x 14.5 5028129⭐⭐⭐⭐⭐
Hamilton Beach TrueAir Air PurifierHamilton Beach TrueAir8.1 x 10.8 x 16.4 60100160⭐⭐⭐⭐⭐
Coway AP-1512HH Mighty Air PurifierCoway AP-1512HH18.3 x 16.8 x 9.6 5477361⭐⭐⭐⭐⭐
LEVOIT Smart WiFi Air PurifierLEVOIT Smart WiFi21.6 x 17.5 x 10 5240322⭐⭐⭐⭐
Winix 5500-2 Air PurifierWinix 5500-2 8.2 × 15.0 × 23.6 5870360⭐⭐⭐⭐⭐
LEVOIT Air Purifier H13 True HEPA Air PurifiersLEVOIT Air Purifier H13 8.7 x 8.7 x 14.25045219⭐⭐⭐⭐
Winix 5300-2 Air PurifierWinix 5300-2 8.2 × 15.0 × 23.6 2870360⭐⭐⭐⭐
Hathaspace Smart True HEPA Air PurifierHathaspace Smart 13.5 x 7 x 19.5 4340350⭐⭐⭐⭐
RabbitAir MinusA2 Ultra Quiet RabbitAir MinusA2 24.1 x 23 x 9.8 20.861815⭐⭐⭐⭐

1. Germ Guardian AC4825 True HEPA Filter – Best Overall

Germ Guardian True HEPA Filter Air Purifier AC4825-best-air-purifier

GermGuardian AC4825 is one of the best air purifiers for 2022 because of its 3-in-1 true HEPA filters that can kill up to 97.99% of harmful germs and bacteria from 167 square feet area. Its powerful filter including air filters for pet allergies can capture the smallest particles as 0.3 microns. Therefore, no chance for dust, pollen, pet hair, dust mites, pet dander, or any other allergens to run from it. Let’s move forward to this home air purifier review.




Amy shared her experience about GermGuardian AC4825 and said,

Although I dust & vacuum fairly often, I noticed I still had issues with my asthma when spending periods of time in my room (in particular when I slept at night). I was using my inhaler much more often than usual and I couldn’t understand why my symptoms seemed worse in my bedroom. I’ve seen advertisements for air purifiers in the past (like the ones that claimed to blow ‘happy ions’ in your face) & figured they were the ‘snake oil’ of air filtration systems. It wasn’t until nursing school when I started to learn about HEPA filters for hospitals that I realized proper filtration could be a game changer for my symptoms. I did my homework while searching Amazon and came across this germguardian purifier that seemed to have great feedback. After reading reviews & confirming the integrity of customers’ feedback ( got your back), I decided to give this filter a go. I’ve had this air purifier for about 5 months now and I would buy one for every room in my house if they were a little less expensive. My symptoms aren’t nonexistent but they’ve definitely improved and that’s all I could ask for! I included a picture to show just how much stuff it filters from the air. This particular filter that I’ve just replaced is completely coated with a thick layer of dust bunnies (and goodness knows what else) after only a few months of use. My symptoms make total sense now that I see how much stuff gets left behind when cleaning. I’m hoping to catch this purifier during a price drop one day so that I can get more for my home & maybe even one for the office I work at. In all, it helps to have a little backup to help catch all the stuff that’s been missed, especially for rooms with carpeting or tons of fabric that dust likes to hide in.

  • Captures Dust & Allergens
  • 4-in-1 Air Purifier for Home
  • Reduces Odors & up to 99.97% of Harmful Germs
  • HEPA Filter
  • Ultra-Quiet Operation
  • Kills Influenza, Staph, Rhinovirus,
  • UV-C Kills Airborne Mold & Germs
  • Make Noise at Highest Setting in quiet place

Infographic_Germ_Guardian_True_HEPA_Filter_Air Purifier_AC4825


The filtration system of GermGuardia AC4825 is based on 3 layers. The True HEPA filter traps 99.97 % of tiny particles (0.3 microns in size) like pollen, pet dander, mold, spores, mildew, and other allergens. The activated carbon layer in its filter can easily reduce smoke and odors. The UV light helps to kill airborne viruses like influenza and staph. This portable air purifier has 9.46 lbs weight and small size, therefore easy to bring anywhere at home. From my personal experience, The air cleaning capability of GermGuardian AC4825 is better than Levoit Vista 200 and Honeywell HPA020B for 100 square feet area.

Energy Start Certified

This 22 inches 3 fan speed tower air purifier is AHAM verified and Energy Start certified can circulate air over 4x per hour. The fans are powerful enough to clean 167 square feet are like the other smart air purifier GermGuardian CDAP4500BCA ( best under 200 dollars). The CADR of GermGuardian is 118 (Dust) 108 (Smoke) and Pollen (125). Its low-speed fan runs ultra-quiet.

Ultra Quiet

GermGuardia AC4825, three fan speed, makes its noise level better than any other modern air purifier. There is no noise problem because of its small fan size, but fan speed is up to the mark. Moreover, if you are sitting in a tranquil place, you will hear a clear sound if you put it on higher settings. Its noise level on the highest setting is 55 decibels (dB). The

Power Consumption

The power consumption of this best in-home air purifier is 53 watts, which is still better than many other top-rated air purifiers for allergies. In 6 to 8 months, you will need to replace filter B depending on the use of the product.


GermGuardian AC4825 air purifier has an elegant design with 3-in-1 air filters for the home, best for medium to large rooms, bedrooms, and offices. A highly efficient filtration system helps to clean air from pollen, smoke, dust, pet dander, germ mold odors, and other allergies. Very lightweight with 3 fan speed settings including optional UV-C light, the best choice for clean air, and breath fresh. Furthermore, it is verified by AHAM, and Energy Star makes it powerful enough to eliminate tobacco smoke and energy-efficient. Because of area coverage, GermGuardian AC4825 is the best air purifier for the room.

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2. LEVOIT LV-H132 Purifier – Best Seller

LEVOIT LV-H132 PurifierLEVOIT LV-H132 best HEPA air purifier is ideal for air conditioning rooms. It is highly effective in reducing dust mites, pollen, pet dander, and other small particles and allergy triggers. This air purifier can clean 129 square feet of the area every 30 minutes in one hour. Moreover, it produces 36 decibels noise level, which is quiet as a library. For automatically adjusting fan speed, it offers a Nightlight function, which also dims the light at night.






  • Portable and Small
  • Super Quiet
  • Customized 4 Replacement Filters
  • Highly Efficient
  • Night Light Settings
  • Easy Setup
  • Best for Allergy, Smoke, Pet Dander
  • 100 % Ozone Free
  • Advanced 3-Stage Filtration System
  • Not any Automatic Shutoff Option

LEVOIT LV-H132 Purifier offers three stages of a best home filter, Pre-filter, True HEPA Filter & Activated Carbon Filter that helps to kill germs up to 99.97 % and remove odor, smoke, pollen, mold spores, and pet hairs. Its strong home air filters can easily filter 0.3-micron particles and air pollution of PM 2.5. The activated carbon filter also absorbs toxic gases including ozone, nitrous gases, and carbon monoxide emitted from high-quality welding machines during the welding process. You can also check the Levoit LV-H133 air purifier for purifying the air in large rooms and bedrooms.

UVC Light and Anion

LEVOIT LV-H132 Purifier doesn’t use UVC Light and Anion to purify the air. UVC Light and Anion can produce Ozone which can be harmful to kids and asthma patients. It is 100 % Ozone free which makes it the best home air purifier.

Noise Level

Silence is the plus point of the LEVOIT LV-H132 Purifier. High-efficiency fans circulate room air over 2 times per hour. It’s low medium and high fan settings help you to set fan speed for various conditions. The lowest fan speed operates quietly at night at 32dB noise level and gentle night light helps you to sleep peacefully in your bedroom.

Area Coverage

This best air purifier for cat allergies has a unique and compact design with an area coverage of 129 square feet. It is the best air purifier 2022 for offices, dorms, small and medium-sized rooms. The CADR rating is 40 cfm in general which is lower than other compact air cleaners at the same price range.

Power Consumption

The maximum power consumption of the LEVOIT LV-H132 Purifier is 28 watts and 0.8 watts at the standby position. You will not find any lower power consumption air purifiers in such a price range.


LEVOIT LV-H132 air purifier is lightweight, portable, and the best small air purifier for smokers, dust, mold, and pets. Unique and compact design with 3 stages best air filters including HEPA air filters, effective for small rooms and bedrooms. It is very quiet with sleep mode, and the nightlight option helps you sleep peacefully at night. Best air purifier 2022 for asthma because of no usage of ozone and UV light.

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3. Hamilton Beach TrueAir  04386A – Ultra Quiet

Hamilton Beach TrueAir Air PurifierIf you are looking for the best budget air purifier with a modern and compact design, then Hamilton Beach TrueAir 04386A is a perfect choice for you. Hamilton Beach is one of those American brands which is gaining customer trust and top reviews. Moreover, It can clean 160 square feet of the area every 30 minutes in one hour.





  • Permanent, 99% HEPA-Grade Filter
  • Lightweight
  • Portable
  • Can use Horizontally and Vertically
  • Effective for small and Large Rooms
  • Easy to Clean
  • Quick Clean Mode is noisy
  • NO Activated Carbon Filter

Hamilton Beach TrueAir 04386A has a lightweight design with an option to put it horizontally. Four adhesive feet are provided in the case so you can put this room air cleaner horizontally in your office and bedroom.

Easily to Clean

You will find an opening tab on the top of the device so you can easily clean and change the air filters by removing the front plate. The reverse airflow system is introduced so air can flow from front to back in any position you place it.

Permanent HEPA Filter

One of the special features of the Hamilton Beach TrueAir 04386A air purifier is a permanent HEPA filter. This HEPA filter can capture 99% pet dander, mold, dust, and pollen including airborne particles or mildew spores as small as 0.3 microns from the air.

There is no need to wash or replace the permanent HEPA filter because of its long-lasting ability. But we will advise you to replace the air filter once it’s very dirty.

For Pet Owners

If you are a pet owner, then Hamilton Beach TrueAir 04386A will be your best partner in dealing with pet hair and dander with mold spores and dust mites. You will not find the best air purifier on a budget with so many operations at one time.

Area Coverage

This best allergen-removing air purifier with a stylish compact design is perfect for small rooms and offices up to 160 square feet. It is the best gift for your loved ones to place in the nursery, den, bedroom, and living room at home.

Noise Level

Hamilton Beach TrueAir 04386A has medium and extra quick clean settings for powerful air cleaning. The noise level will be high as 60dB at quick clean settings which are higher than other air purifiers. You will need to put it on a whisper clean setting at night for a peaceful sleep.


Hamilton Beach TrueAir 04386A is lightweight with a permanent HEPA filter and easy to place vertically and horizontally anywhere at home or office. Highly effective in dealing with pet hairs, pet dander, dust mites, and mold. Ultra-quiet with 3 fan speed operation with whisper clean setting, best for small rooms, bedroom, living rooms, and offices.

Related Post: Best Air Purifier for Pets 2022


4. Coway AP-1512HH Mighty Air Purifier – Amazon’s Choice

Coway AP-1512HH Mighty Air PurifierCoway is the top-ranked Korean brand providing life care services for 30 years. If you are looking for the best-rated air purifier for removing dust and other allergens, and suitable for very large rooms, then Coway AP-1512HH Mighty Air Purifier is the best choice for you. It can clean 361 square feet of the area every 15 minutes in one hour. Moreover, it offers Eco Mode and Smart Sensor for keeping the power consumption as low as possible.




  • 4-stage Filtration
  • Auto Mode
  • Air Quality Indicator
  • Covers up to 361 sq.ft
  • Eco Mode
  • Vital Ion system
  • Timer
  • Filter Replacement Indicator
  • No Option to Turn Off the Top Light

This iPod look-alike air purifier has the best-looking and luxury style. Coway AP-1512HH Mighty Air Purifier is covered in plastic. Air vents under the front plastic plate help to pass the polluted air in the filtration process, and the top air grill releases the fresh air.

4 Stage Filtration System

This elegant and compact air purifier has not sacrificed the quality of its room air filter. The 4 stage filtration system including best HEPA filters of Coway AP-1512HH Mighty air purifier consists of Pre-Filter, Activated Carbon Filter, True HEPA Filter, and Ionizer.

Reduse 99.97% Particles

The permanent Pre-filter is easily washable and can capture mold, pet and human hair, and large particles. Carbon Activated Filter keeps your room, office, or house fresh and removes the dangerous and harmful gasses. The efficient and high-performance HEPA filter reduces the 99.97% airborne particles as small as 0.3 microns, including pollen, allergens, odors, and volatile organic compounds. Boost up cleaning power by vital ionizer gives freshness to the air.

Area Coverage

Space coverage should be one of the features of the best home air purifier. The clean air delivery rate (CADR) of Coway AP-1512HH Mighty is 246 dust/ 240 pollen, and 233 smoke with 4x ACH (Air change per hour) accommodates a large space up to 361 sq. ft. I also run Honeywell HPA600B for cleaning the air in 100 square feet of area. It provided the same performance as Coway AP-1512HH Mighty, but the price of the Honeywell air purifier is high.

Noise Level

The lowest noise level of 3 fan speeds of Coway AP-1512HH Mighty air purifier is 24.4dB, which makes it hard to hear in the night. The highest fan speed produces a soothing white noise at 54dB noise level.

Power Consumption

The power consumption of Coway AP-1512HH Mighty is 77 watts, but the eco mode reduces it as low as 4.9 watts. The Eco mode automatically optimizes the fan speed setting and puts the air purifier in the standby position if the air is still clean. This feature makes it the best energy-saving purifier on the market.


Coway AP-1512HH Mighty Air Purifier has 3 stages of the indoor air filter with a luxury style, best for reducing odors and chemicals, including volatile organic compounds (VOCs). It can automatically optimize fan speed and the best air cleaner for medium to large rooms and offices. The Combination of a permanent HEPA filter and an Activated Carbin filter helps to trap pollen and other allergens.

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5. LEVOIT Smart WiFi  – Safe & Reliable

LEVOIT Smart WiFi Air PurifierLEVOIT LV-PUR131S Smart WiFi air purifier has a gorgeous design with smart features and the best air purifiers for removing smoke, pet hairs, VOCs, and dust. This smart air purifier has the ability to battle allergies and asthma. Moreover, it can clean 360 square feet of the area every 30 minutes in one hour. It also provides very useful smart features like Smart Sensor, Auto Mode, and Wi-Fi connectivity.





  • 3 Fan Speed
  • Quiet Operation
  • Timer and Schedule
  • Improved Performance
  • Best Value for the Money
  • Auto & Sleep Mode
  • Air Quality Monitor
  • Voice Command to Control
  • Ideal for Allergic People
  • Smoke Eater and Odor Eliminator
  • Ensure Whole-Night Sleep
  • Hot Motor Problem

The aesthetic looking design of the LEVOIT LV-PUR131S Smart WiFi air purifier with 18 inches in height and 7 inches in depth has many advantages. There is enough space available in this portable air purifier to put larger air filters for better filtration for your home.


This lightweight (11lbs) air purifier has a white color, and on top, there is an LCD with a set of buttons so you can set or manage the air quality in your room or home. An air grill is also available on the top for the intake of polluted air.

Smart WiFi

LEVOIT LV-PUR131S Smart WiFi air purifier has a basic 3 stages of HEPA filters for the home, Pre-filter, True HEPA filter, and Activated Carbon Filter just like best HEPA air purifiers.

Filtration System

The Pre-filter has effective characteristics to capture large airborne objects like dust, pet hairs, pet dander, and mold. There is no facility to wash Pre-filter. The certified True HEPA filter and Activated Carbon filter can trap 99.97% tiny particles as small as 0.3 microns including, smoke, allergens, pollen, odors, and spores. Honeywell HPA300 offers better air cleaning performance, but its price is also higher.

VeSync App

You can control this best air cleaner with the help of the VeSync app by using your smartphones. VeSync app will help you to monitor and control air quality, LCD display, and customize the schedule.

The voice control feature compatible with Alexa, Google Assistant, and IFTTT gives you the best controls over air quality without lifting your finger. You can save your money by the VeSync app and smart filter life feature which calculates the filter life according to your air quality.

Area Coverage

LEVOIT LV-PUR131S Smart WiFi air purifier has 360 sq. ft. space coverage with 135+ CADR rating and 30% extra purify efficiency and speed make it best for medium and large rooms, kitchen, bedroom, and offices and even for small rooms.

Noise Level

LEVOIT LV-PUR131S Smart WiFi air purifier has three fan speed settings low, medium, and high. Auto mode automatically adjusts the fan speed, and sleep mode with the noise level of 27dB maintains a peaceful and soothing indoor environment while you are resting.

Power Consumption

The CARB certified and energy star rated LEVOIT LV-PUR131S has 40 watts power consumption with high fan speed, and 0.8 watts at the standby position makes it one of the best energy-saving air purifiers.


LEVOIT LV-PUR131S has 3 room air filters with 3 stages fan speed, is best for dust removal, eliminating allergies, smoke, and pollen. Smart wifi feature and easy to use by the Vesync app. It is CARB certified and energy-efficient and can easily cover the area of medium to very large rooms. Highly effective for kitchen odors, pet smell, and chain smokers.

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6. Winix 5500-2 Air Purifier – Amazon’s Choice

Winix 5500-2 Air PurifierWinix 5500-2 Air Purifier has won the amazon choice title with more than 16,000 trusted buyers reviews at the time of writing, is the best-rated air purifier for allergies and the home environment. It can clean 360 square feet of the area every 15 minutes in one hour. Moreover, it is reasonably quiet at low fan speed (28 decibels) for a peaceful sleep at night.





  • Smart Sensor
  • Filter Replacement Indicator
  • Washable Fine Mesh Pre-Filter
  • Washable AOC Carbon Filter
  • Best for the price
  • Luxury Design
  • Air Quality Indicator
  • Dual Smart Sensors + Auto Mode + Sleep Mode
  • Reduces Bacteria and Viruses
  • PlasmaWave Air Cleaning Technology
  • PlasmaWave can be irritated for asthma

The sound and well-designed plastic body with an attractive black color give Winix 5500-2 a luxurious and expensive look. There is an air grill on the front of Winix 5500-2 for air intake with 5 buttons and an LCD smart sensor to control and check the air quality in your office or bedroom.

Avoid to put it in sunlight

This classic air purifier is 23.6 inches in height, and 15.4 lbs weight makes it easy to move anywhere in your home. We will recommend you put it on a hard and plain surface or side of the table for easy access.

Filtration System

The excellent washable Pre-filter traps large particles like pet hair, pet dander, and dust. Carbon activated filter helps you to reduce smokes, odors, and VOCs for a long time. The True HEPA filter, a best indoor air filter,  captures the 99.97% down to 0.3 microns virus particles, pollen, allergens, and mold. The permanent PlasmaWave filter helps in the filtration of chemical vapors, viruses, bacteria, germs, and allergens.

Area Coverage

The AHAM verified Winix 5500-2 Air Purifier has 360 sq. ft room coverage with 4X ACH and CADR 246 pollen, 243 dust, and 232 smoke, make it best air purifier in 2022 for kitchen, bedroom, medium, and large spaces.

Noise Level

The 5 fan speed settings make Winix 5500-2 Air Purifier outstanding from its competitors. When you put it on high fan speed, the maximum noise level is 58 dB which is still best for office use. The sleep settings have a 28dB noise level, so you can have peaceful sleep at night.

Power Consumption

This 5 fan speed air purifier has 70 watts of power consumption which is quite reasonable with such a powerful fan speed. You can adjust the fan speed with a smart sensor to check the air quality and save energy.


Winix 5500-2 is a lightweight air purifier with an expensive look and best for smoke, odors, and VOCs. Smart sensor with 5 stages fan speed and sleep mode, it is suitable for the kitchen, living rooms, and office. It is energy efficient, and AHAM verified. If you are looking for a low-range air purifier, then you should consider this HEPA air cleaner.


7. LEVOIT H13, Core 300 – Energy Star

LEVOIT Air Purifier H13 True HEPA Air PurifiersIn American Brands, LEVOIT Air Purifier H13, Core 300 is the best budget air purifier under 100$. With the most attractive design, this top-rated air cleaner has everything that you are looking for in 2022. Its 3 stages of air filters can clean 215 square feet of the area every 12 minutes in one hour. Levoit Core 300 is ultra-quiet and best for bedrooms.





  • Zero Light Pollution in Night
  • Filter Replacement Indicator
  • H13 True HEPA Filter
  • High Efficiency Activated Carbon Filter
  • Ozone Free / CARB Certified
  • Long Service Life
  • Lightweight
  • Luxury Design
  • Smart Sensor not Available

This white colored cylindrical shape air purifier has a 360-degree air vent, which gives it a sleek look and makes it a high-end air purifier. The stylish air outlet with a newly designed top control panel including timer indicator (6 Hours) and its 7.5 lbs. weight gives it a luxury look and makes it the best air purifier 2022 for home, especially for per owners.

Filtration System

LEVOIT Air Purifier H13, Core 300, has 3 stages of a large expansion and a more extended length best rated air filters for home. This best HEPA filter imported from Japan with high-performance Pre-filter and Ultrafine Granular Activated Carbon Filter can capture 99.97% of the tiny particles as small as 0.3 microns. These high-grade filters can also trap large particles, including pollen, dust, smoke, pet dander, and pet hair.

Effective Air Cleaning

This air cleaner for home also has customized options like pet allergy, toxin absorber, mold, and bacteria filtration. Pet allergy filter removes pollen and pet dander and absorbs the smell of pet urine, kitchen, and other household odors. Toxin absorber filter absorbs chemicals, smoke, gasses, and other volatile organic compounds.  Mold and bacteria filter prevents the growth of harmful germs.

Vortexair Technology

This best air purifier for allergies and asthma has Vortexair Technology for smooth and robust airflow. 5 times ACH with 140 dust, 145 smoke, and 141 pollen, LEVOIT Air Purifier H13, Core 300 can cover 219 sq. ft area. This feature makes it best for small rooms, bedrooms, or small spaces, especially in America and Canada.

Noise Level

With the help of QuietKEAP technology, you will not feel disturbed with the 24 dB noise level of this quiet purifier, LEVOIT Air Purifier H13, Core 300, at night in your bedroom. The highest noise level is 50dB, and you will not feel any disturbance even you hear a sound.

Power Consumption

The power consumption of this Energy Star verified HEPA air purifier is 45 watts and 0.8 watts at the standby position make it impressive and energy-efficient.


LEVOIT H13, Core 300 is a compact, ozone-free best cheap air purifier with high fan power. It can easily trap large particles, including pollen, dust, smoke, pet dander, and pet hair. With the help of the customizing option, it can eliminate kitchen and other household odors and best for bedroom, and large rooms.


8. Winix 5300-2 Air Purifier – Amazon’s Choice

Winix 5300-2 Air PurifierWinix 5300-2 is one of the best inexpensive air purifiers of Korean Brand Winix. This budget air purifier has an amazon choice award with more than 6000 trusted buyers’ reviews at the time of writing.





  • Automatically Fan Speed Adjustments
  • Washable Fine Mesh Pre-Filter
  • Activated Carbon Filter
  • True HEPA Filter
  • PlasmaWave Air Cleaning Technology
  • Protection against Cooking and Pet odors
  • No Harmful Ozone
  • CARB Certified
  • Advance Odor Control
  • PlasmaWave can be irritating for asthma

The lightweight Winix 5300-2 has a small and slim plastic body 23.6 inches in height, with 2000 holes air intake grill on the front for better air quality. With 15.4 lbs. weight, this portable air purifier is easy to move anywhere in your home.

Filtration System

The low-end air purifier, Winix 5300-2, has incredible specs, including 3 stage top air filters.  The True HEPA filter has the extraordinary ability to captures 99.97% airborne particles (0.3 microns), including dust mites, pet dander, pollen, and other allergens. Therefore, it is best for kids’ bedrooms, infants, pregnant women.

Effective Air Cleaning

The Pre-filter with Carbon activated Filter reduces the fungi particles, household chemicals, odors, cigarette smoke, and dust. The harmful ozone-free, permanent PlasmaWave Filter creates hydroxyls and safely traps the chemical vapors, viruses, bacteria, smoke, germs, and other pollutants.

Area Coverage

The ACH of this best air purifier for home with pets is 4X with 243 dust, 232 smoke, and 246 pollen (cfm) CADR rating. The space coverage of this air filter is 360 sq. ft. and perfect for medium, and large rooms and offices.

Noise Level

The Auto mode and Smart sensor adjusts and gauges the air and fan, and the sleep mode maintains the noise level at 27.8 dB for a peaceful sleep at night. Winix Brand is famous for low noise level air purifiers even with high fan speed.

Power Consumption

The power consumption with 5 stages fan speed of this Energy Star Rated air purifier is 58 watts, which makes it energy efficient. We will recommend Winix 5300-2 if you are looking for the best air purifier for allergens in 2022.


Winix 5300-2 is the best budget air purifier for asthma and other allergens. It is lightweight and has an attractive slim design with 3 stages top-rated air filters, which work excellent to eliminate chemical vapors, viruses, bacteria, smoke, and germs. This energy star ultra-silent air cleaner is suitable for baby rooms, bedrooms, offices, and nurseries.


9. Hathaspace HSP001 Smart True HEPA – Whisper Quiet

Hathaspace Smart True HEPA Air PurifierIf you are looking for a budget air cleaning solution, then Hathaspace HSP001 Air Purifier is the best choice for you. This best-rated air purifier is an excellent protector for your family and loved ones from common allergies, and asthma-like running nose, MCS, shortness of breath, and sneezing.





  • Eliminate Smoke & Odors
  • Capture Pet Hair & Dander
  • Very Quiet
  • Value for the Money
  • Cold Catalyst Filter
  • Activated Carbon Filter
  • HEPA Pre-Filter
  • True HEPA Filter
  • Ionizer
  • Automatic Airflow System + Auto Mode
  • Remote Control Operable
  • The issue with Customer Support

Hathaspace Air Purifier has a smart and decent design, with 20 inches height and 13 inches width makes it a small air purifier. You can place this lightweight (12lbs) air cleaner anywhere in your garage or anywhere at home.

Easy to Control

The bottom-to-top airflow system passes the air from the front plate to the air filtration system and releases it to maintain the air quality in the house. The control panel is placed on the front with a stylish LCD display and buttons to adjust the fan speed, timer, sleep mode, and much more.

Filtration System

The 5-in-1 air filtration system including best HEPA air filter is designed to protect your lungs from harmful indoor pollutants, including dust, mold, smoke, and any volatile organic compounds (VOCs).

Nano Cold Catalyst Filter

Nano Cold Catalyst Filter is also known as Pre-filter, targets, and eliminate large particles and toxic household chemicals, including dust, pet dander, formaldehyde, ammonia, and benzene. Antibacterial Filter uses nano-materials to eliminate viruses, bacteria, and fungi particles.

CARB Certification

The CARB-certified True HEPA Filter can trap and destroy the 99.97% small airborne particles (0.3 microns) like pollen, mold spores, dust, and allergens. CARB certification proves that you don’t need to worry about asthma and other allergens.

Ozone Free

The ozone-free ionizer neutralizes unpleasant odors like cats or dogs litter boxes, pet dander, cigarettes, kitchen, and old homes and apartments.

Area Coverage

The ACH of the Hathaspace HSP001 Air Purifier is 2X, and the CARD is 100cmf, which is lower than other home air cleaners for smokers in the same price range. The room coverage is 350sq. ft. which is quite impressive and best for large rooms.

Noise Level

The maximum noise level of the Hathaspace HSP001 Air Purifier is 43 dB, which is equal to the lowest noise level of other expensive air purifiers. You will not hear any sound at the lowest noise level 18dB of this ultra-quiet air purifier.

Power Consumption

Hathaspace HSP001 has low fan power; that’s why the power consumption of this energy-efficient air purifier is 40 watts.


Hathaspace HSP001 Air Purifier is a cheap, portable, and excellent deodorizer for odors, viruses, bacteria, allergies, and asthma. CARB certified with 5-in-1 HEPA filters for home and ultra-quiet operation for large size rooms and bedrooms. No need to worry if you are asthma suffers because it is ozone-free.


10. RabbitAir MinusA2 HEPA Air Purifier – Ultra Quiet

RabbitAir MinusA2 Ultra Quiet HEPA Air PurifierRabbitAir MinusA2 Air Purifier has an elegant design and outstanding features, making its name in the list of best air purifiers in 2022. Rabbit Air is providing high-end air purifiers with a lot of smart features since 2004. But if you are looking for cheap air purifiers, then it is not for you.





  • Typical True HEPA filter
  • BioGS HEPA Filter
  • Charcoal-Based Activated Carbon Filter
  • Negative Ion Generator
  • Germ, Pet Allergy, Odor & Toxin Absorber Filter
  • Elegant Design
  • Energy Efficient
  • Best HEAP Filter
  • Ultra Quiet
  • Wireless Internet Ability
  • Best value for Money
  • Little Expensive

RabbitAir MinusA2 has three models. The SPA-700A and SPA-780A have 700 and 815 square feet area coverage. PSA-780N with wifi addition and white and black color option has 815 area coverage. The ACH is 4X with 200 Dust/ 193 Smoke/ 208 Pollen (cfm) CADR can clean the room just in 15 minutes.

Auto Mode

Square metal body with customized LED panel on the front makes RabbitAir MinusA2 Air Purifier outstanding from other air cleaners. Button functions on the right help you to adjust fan speed, filter reset including an auto mode, sleep mode, filter replacement indication, and much more.

Light Weight

This air purifier for smokers’ home has 19.2 lbs in weight With 19 inches in height and 21.4 inches in width, easy to mount on the wall or place anywhere in your home. To maximize the fan power and to inhale polluted air, the air intake and air outlet are around and on top of the front panel, respectively.

Filtration System

RabbitAir MinusA2 Air Purifier has 6-stages top-rated air filters that enhance its cleaning power and remove asthma and many other allergens from your house or office. These layers of protection can eliminate any of your specific concerns.


The permanent washable and reusable Pre-filter helps to capture the large particles including, dust and pet hair. If some particles can pass the prefilter like pollen, bird dander, mold, and dust mites, then the Medium Filter is there to trap them.

BioGS HEPA Filter

The BioGS HEPA filter increases the filter efficiency and ability to capture the 99.97% allergens and airborne particles 0.3 microns in size. The other feature of this best filter is it can trap 99% common allergens as small as 0.1 microns, including bacteria and viruses.

Customized Filter

Germ defense, pet allergy, toxin absorber, and other animal odor remover filter options are added in a unique Customize Filter. This will helps you to trap and remove virus-carrying mold spores, chemical fumes, and volatile organic compounds (VOCs), pet allergens, and dander. There is no chance to survive for pets’ odor, cooking, mildew, cigarettes, and cigar smell in the house.

Carbon Filter

An activated Carbon Filter coated with a thin layer of carbon helps to reduce the chemical vapors and common household odors and smoke. Negative Ion Generator freshens the indoor environment. There is an option to turn off and on for irritating asthma and breathing.

Noise Level

Brushless Direct Current (BLDC) Motor runs the fan in tranquil motion and maintains the noise level at 20.8 dB minimum, which is extraordinary. This feature makes RabbitAir MinusA2 an ultra-quiet air purifier in the market.

Power Consumption

The power consumption of the RabbitAir MinusA2 air purifier is 7 watts at low fan speed and 61 watts at high fan speed. You will not find such an energy-efficient air purifier with 5 fan speeds around you.


Excellent design and power with the latest and smart feature, RabbitAir MinusA2, is one of the best air purifiers available in 2022. It works great for large rooms and highly effective against pollen, pet dander, mold, and dust mites, asthma, and many other allergens. Ultra-quiet and energy-efficient, a little expensive but still good air cleaner for home and office.


Importance of Air Purifier in our Life

We provided you a list of best air purifiers in 2022. But the question is, why do you need to buy an air purifier? Do these air cleaners work effectively to clean our indoor environment? Or do you need it while sitting at home or sleeping in your bedroom?

Good air quality is essential for our health, like food and water. I am sure your answer will be yes if I ask you, do you invest time and money in diet and exercise? Similarly, we need to invest in cleaning our air to save ourselves from numerous diseases.

With the population growth and advancement in technology and the industrial sector, polluted air is impacting all of us. According to the World Health Organization (WHO), every year, 4.2 million people are dying because of polluted air.

Now I want to grab your attention to the point of how air purifiers clean our air? Why we need help from these air cleaning machines.

How does Air Purifier work?

Air purifiers consist of multiple air filters made of fiber, paper, and mesh. These filters help to circulate air through intake and outlet systems so they can remove airborne particles like cigarettes, led, and arsenic from the air.

Use of Activated Carbon Filter

If you look for the best air purifier in the market in 2022, you will find out that many air cleaners use Activated Carbon Filters. These filters use carbon in granular or powdered form to act as an absorbent and captures particles like dust, pollen, and odors.

These filters are good to remove hazardous compounds, but their efficiency is restricted to gaseous pollutants like VOCs and radon.

You may be thinking about how you can clean air by using a chemical? Now let me explain how the Activated carbon Filter works. You need to put activated carbon in the filter of air purifiers like HEPA filters.

Polluted air enters the filtration system by intake grills of the air cleaner, and passes through the active carbon. The small absorbent pores start the absorption process and then air leaves the filter by outlet grills. If you enable the HEPA filter with Activated Carbon Filter, then it will help to capture the large airborne particles like dust, lint, pet hair, and mold spores.

An activated Carbon Filter is highly effective to clean polluted air. If your filter is more activated than then the capacity of removing impurity, filter life and absorbing pollution will increase. The combination of carbon filter with magnesium dioxide and copper oxide helps to remove harmful pollutants from the air like monoxide and ethylene oxide and bacteria. The carbon filter is also best for pet odors.

True HEPA Filter

In our list of best air purifiers in 2022, you may be noticed that most of the air purifiers used the term True HEPA Filter. All modern air cleaner brands are using Ture HEPA Filter to enhance the performance of their product.

Now we will talk about widely used High-Efficiency Particulate Arresting (HEPA) filters in air purifiers. Before buying any air cleaner, we will recommend you to focus on those air purifiers having a certified HEPA filter that can remove 99.97% airborne particles as small as 0.3 microns.

We are unable to visually see anything less than 10 microns

When the polluted air passes, these filters capture the larger particles and the smaller particles which try to pass through the fiber trap by the edges of the fiber. Now the smallest particles (0.3 microns) have free random movement destroy by diffusion.

The True HEPA filters are different from each other because of their fiber density and quality. You will find many terms in the market like HEPA-type or HEPA-like but always go for Ture HEPA Filter because only this filter can capture the polluted particles size of 0.3 microns.

UV-C Light Filter

The UV-C light filter is an air sanitizer commonly used in high-end and affordable air filters to destroy germs, including mold spores, bacteria, and viruses. The True HEPA filter works with a UV-C light filter to collect the bacteria and viruses and kill them.

You cannot see UV-C light with the naked eye. It uses electromagnetic radiation effectively to prevent the DNA reproduction of microscopic particles like germs from the air that cause many diseases. Then with the help of a True HEPA filter, it removes other allergens like dust, pollen, and pet dander.

If you think that UV-C light is harmful to humans, then there is no need to be a worry. It usually causes no harm plus the light bulb is placed inside of the air purifier so you will not be exposed to ultraviolet rays.

The problem form UV-C light is that it emits ozone which is irritating for asthma, breathing issues, and many other allergens. Most air cleaners introduced turn off and on function if it causes breathing problems. It is necessary for you to buy certified air purifiers.


Some air purifiers use an ionizer instead of a True HEPA filter to kill germs by high voltage electricity to charge the air molecules. The airborne particles are as small as 0.1 microns attract the negative ions and fall on the charge collector.

The air ionizer plays an effective part in cleaning air with the replacement of the filter. In the air purification process, it emits ionized air which can be harmful to the lungs with unwanted ozone. But the good news is there is a turn-off, and on function if ionize air or ozone start irritating for asthma and other allergens.

PlasmaWave Filter

In PlasmaWave filtration, the air in the plasma state strikes water to release oxygen and hydrogen. Oxygen and hydrogen create unstable molecules, hydroxyl radicals, by taking atoms from airborne pollutants like germs, odors, bacteria, and volatile organic compounds (VOCs) and destroy them.

PLasmaWave is one of the core filtration processes in air cleaners. There is no ozone emission in this process so we can say that the PlasmaWave filter is not irritating for asthma and allergens. But we will still recommend you to purchase only CARB certified air purifiers.


What is the most highly recommended air purifier?

There are many different options available on the market when it comes to air purifiers. However, not all air purifiers are created equal. Some air purifiers are better than others at cleaning the air and removing pollutants.

So, what is the most highly recommended air purifier?

There are a few different air purifiers that experts highly recommend. Some of the most popular and highly recommended air purifiers include the Germ Guardian AC4825, LEVOIT LV-H132, and the Coway AP-1512HH.

These air purifiers are all top-of-the-line models designed to clean the air in your home effectively. They all feature high-quality filters that can capture and remove a wide range of airborne pollutants.

If you are looking for an air purifier that will provide you with clean, fresh air, then one of these models is the way to go.

Buying Guide for Best Air Purifier for 2022

Our experts provided you the list of the best air purifiers in 2022 that are in demand in the market and good for your health. This list will be the perfect assistant for you when you go out to buy the best air cleaners for your home. Now we will help you with how you can choose or buy the best air purifier 2022 for you.

First, you have to need to know about the types of air purifiers. Air purifier brands use different kinds of technologies to tackle indoor air pollution. Even though we gave you a little introduction about air filters but now we will help you to understand which fair purifier will be good for your breathing?

HEPA Filter

Air purifiers use pleated filters with fine mesh known as HEPA filters to pill air in fiber to trap particles. HEPA filters trap 99.97% airborne particles as small as 0.3 microns, including, smoke, and paint pigments. This filter is also the best solution for large particles like dust, pollen, and mold spores hanging in the air.

The HEPA filter is the main component in air purifiers to clean air in offices and homes. But we recommend you to choose only certified by the United States Department of Energy. Do not confuse by the terms like HEPA or HEPA type.

If you are a new parent, then the True HEPA filter is highly effective for newborn babies to protect their immune systems from indoor pollution. It is also helpful for pet owners to protect from pet dander, pet hair, eczema, and other allergies. For any individual in your family who has asthma then HEPA is the best air filter to remove smoke, contaminants, and other odors from the indoor environment.

Remember, HEPA filters cannot trap gasses and chemicals.

Always make sure to replace the air filter in 6 or 12 months according to your air quality because bacteria and mold grow in high moisture and temperature levels in HEPA.

Activated Carbon Filter

As you know that HEPA filters cannot trap gasses, chemicals, and odors, but if you use them with Activated Carbon filters, they can effectively absorb these particles from the air. Many air purifiers use a combination of HEPA and Activated Carbon filter to capture large as well as small particles.

When air passes the Activated Carbon filter, it absorbs the gaseous and odors contaminants and removes unwanted harmful VOCs and unpleasant smells and chemicals. You need to replace Activated Carbon filters because of the fast saturation system, every three months according to your air quality.

Not Effective to Remove Dust

Activated Carbon filters are economical, energy-efficient, and have excellent ability to fight against gasses, offensive smells, and toxins to save your family. You will receive the best results if you use them with HEPA filters.

Ozone generators

Ozone generators produce ozone to destroy air pollutants. They are very effective in removing airborne particles, including odors and chemicals, with a naturally fresh scent. Because of these features, many customers prefer to buy ozone generators.

With the ability to break down any particle, ozone generators are highly effective in removing odors, mold, and mildew. But on the other hand, it has terrible effects on your eyes, skin, and lungs. We will recommend you avoid ozone generators if you have asthma or breathing problem.


Ionizers emit negative ions to charge particles like dust, pollen, bacteria in the air to attract and stick them on the plate or nearby surface. You don’t have to change ionize filters, which means no cost of filter replacement. Ionizers are highly effective in removing airborne particles 0.1 microns in size, including bacteria, and viruses.

Ionizers are not effective in removing dust, pollen, and dander. For this, you need a HEPA filter with an ionizer to remove dust and pollen. These cleaners use a small amount of ozone, so if you are having asthma or other allergens, you should consult before buying ionizers.

UV Light Air Purifiers

Some air purifiers use ultraviolet filtration to trap and kill airborne viruses, harmful bacteria, and fungi particles. UV light filtration is highly effective in eliminating toxic and harmful microscopic particles and clean our indoor air quality. These air cleaners are very silent that you will not notice any sound while they are working.

UV light air purifiers are highly effective in eliminating toxic and harmful microscopic particles to maintain indoor air quality. This air purification process is very silent that you will not notice any sound while they are working.

Because of the latest technology, UV light air purifiers are a little bit expensive. Besides, you need to replace UV light filters in 12 to 24 months according to your air quality. You will need other air filtration systems to remove dust, gasses, cigarette smoke, and other harmful chemicals in the air.

PECO Technology

PECO is the latest technology in the air purification industry that can eliminate ultrafine particles, including bacteria, viruses, mold spores, and smoke. PECO works on the principle of photocatalysis which uses light energy to break down contaminants into harmless molecules.

This technology is still new in the market, and very few air purifiers use this technology. PECO is an excellent technology that can eliminate ultrafine particles, including bacteria, viruses, mold spores, and smoke.

If you want to buy the best air purifier with PECO technology, you need to spend a little more because this technology is new in the market.

Size of Air Purifier

The size of an air purifier is also mater with its air purification qualities. If you have no place in your room, then the placement of the air cleaner will be a headache for you. Most of the air purifiers are designed for small rooms, and for large rooms, you need air purifiers will maximum area coverage.

To buy the best air purifier for home in 2022 and to save energy and cost, you have to understand the area coverage capacity of air cleaners.

Air Changes per Hour (ACH)

Air changes per hour (ACH) explain how many times an air purifier exchanges the air in your room within one hour. If the ACH of your air cleaner is 4x, it means it can clean air four times in one hour.

Clean Air Delivery Rate (CADR)

CADR explains the air-cleaning ability of an air purifier within a particular area. For example, if the CADR of your air purifier is 118 (Dust) 108 (Smoke), and Pollen (125), it means it is suitable for 160 to 200 sq. ft area.

How many years do air purifiers last?

Most air purifiers on the market are designed to last for around 5 years. However, some factors can impact the lifespan of your air purifier, such as how often you use it and what type of filter it uses. For example, if you have a HEPA filter, it may need to be replaced more often than other filters. Additionally
If you use your air purifier frequently, it may not last as long as one that is only used occasionally.

To get the most out of your air purifier and make sure it lasts for as long as possible, follow the manufacturer’s recommendations for care and maintenance. This may include replacing the filter regularly, cleaning the unit regularly, and avoiding using it in excessively dusty or humid environments. By following these tips, you can help ensure that your air purifier lasts for years to come.

How Air Purifier Fights Against Problems

As we mentioned earlier that indoor air is five times polluted than outdoor air, so definitely, you will need an air purifier for your family to breathe in clean air.

Unpleasant Odors, Asthma, and Allergies

Air purifiers help to burn unpleasant smells with air cleaning. You don’t need to worry about kitchen odor if you are cooking on the weekend for some family gathering. With the help of a true HEPA filter, indoor air will not only get rid of bad smells in your home but also clean from dust mites, mold, spores, pet dander, allergies, and asthma.

To Eliminate Chemical and Smoke

Air purifiers remove chemicals, odors, and smoke from the air with the help of an Activated Carbon filter. If you use the combination of an Activated Carbon filter with a True HEPA filter, you can also get rid of dust and other allergens.

Fights against Bacteria and Viruses

Air cleaners are your best assistant to save you and your family from bacteria, germs, and harmful viruses. To clean your indoor air and stay healthy, and best protection against mold, smoke, pollen, dust, and lint, use UV filters with True HEPA filters.

Improve Skin Texture and Sleep

If you feel difficult to breathe in smoke, household odors, molds, or asthma surfer, or have other allergies, then air purifiers are the best companion for you. With the help of an ionizer, you will feel better in breathing, and your sleep pattern will improve. They also put excellent effects on skin texture, respiratory system, and resistance against infection.


Best Air Purifier – Frequently Asked Questions (FAQs)

What is the best air purifier on the market?

Following are the best air purifiers available on the market

  1. Germ Guardian AC4825 True HEPA Filter Air Purifier – Best Overall
  2. LEVOIT LV-H132 Purifier – Best Seller
  3. Hamilton Beach TrueAir  04386A Air Purifier – Ultra Quiet
  4. Coway AP-1512HH Mighty Air Purifier – Amazon’s Choice
  5. LEVOIT Smart WiFi Air Purifier – Safe & Reliable
  6. Winix 5500-2 Air Purifier – Amazon’s Choice
  7. LEVOIT Air Purifier H13, Core 300 – Energy Star
  8. Winix 5300-2 Air Purifier – Amazon’s Choice
  9. Hathaspace HSP001 Smart True HEPA Air Purifier – Whisper Quiet
  10. RabbitAir MinusA2 HEPA Air Purifier – Ultra Quiet

Does air purifier really work?

Do air purifiers work? One of the most common questions people ask. Air cleaners indeed have the ability to capture airborne small or large particles or other allergens. An air purifier is your strong partner in eliminating mold, dust, pet dander, pet hair, odors, VOCs, smoke, and gasses.  But you also need to clean your surface so these air cleaning machines can work properly.

What is the best air purifier for a bedroom?

We provided the list of the top 10 best air purifiers in 2022 for your bedroom, offices, or an entire house. An air cleaner should be quiet enough so you can sleep peacefully in your bedroom. RabbitAir MinusA2 Air Purifier maintains the noise level at 20.8 dB, which is best for a sound sleep.

Are air purifiers a waste of money?

Some people do not realize the importance of air cleaning and how air purifiers work. Air purifiers help effectively in capturing dust, pet dander, mold spores, kitchen odors, and smoke. They have an excellent ability to fight against germs, bacteria, viruses, and other allergens. Investing in indoor air cleaning is not a waste of money. We can assure you that these air cleaning machines are worth your money.

Why are air purifiers so expensive?

We talked in detail about the features, functions, and operations of best air purifiers in 2022. The manufacturing companies invest in the filtration system, design, sound, and other mechanical features to provide the best results and stand out in the market. Of course, these brands spend a lot on advertising to reach the demand of people. But there still some cheap air purifiers which provide extraordinary air cleaning.

Why are air purifiers bad?

Air purifiers use different filtration systems for air cleaning for the entire home effectively. True HEPA filter-based air cleaners work really great to clean indoor air and do not harm your health. Some ozone generators or UVC-Light-based air purifiers have some terrible effects on asthma suffers. But there is an off-and-on option available if you feel irritated or problematic in breathing.

How long does it take an air purifier to clean a room?

A high-quality air purifier can clean the air in your room in 15 minutes to 2 hours, depending on the area, and fan speed.

Should I leave the air purifier all day?

It would be best if you turned on air purifiers for maximum time because the air quality in your room or house is continuously changing. If you are concern about power usage, then you should set low fan speed or auto mode so you can reduce the power consumption.