10 Best Air Purifiers 2021 – Buyer’s Guide

Our natural environment is badly affected by the industrial revolution, the industry has polluted our air, water, and land and now we have severe kinds of diseases and germs. Coronavirus is the lastest kind of hidden enemy, a kind of virus that has killed thousands of people worldwide. In order to keep our homes safe, we must use air purifiers in homes, offices, and buildings. As per experts, more diseases will come so we must prevent our families first otherwise, it can result in serious health problems.

Air purifiers are also known as air cleaners, these are the kind of devices best known to remove such contaminants from the atmosphere and also help to enhance indoor air quality. In large industries, where there is a high level of pollution or toxins, air cleaners are needed to remove this impurity from the air before processing takes place.

An air purifier can also be described, as devices powered electrically to cleanse the air in the home, and removing all the impurities including odors, smoke, and dust. An air purifier is very helpful to people suffering from asthma, allergies and also it helps to eliminate or reduce second-hand tobacco smoke.

10 Best Air Purifiers 2021 - Buyer's Guide
10 Best Air Purifiers 2021 – Buyer’s Guide

Todays’era is the era of modern industry where air pollution is becoming one of the toughest challenges of all times, to breath fresh air is near to impossible that’s why companies have planned to manufacture air purifiers, basically these air purifiers are affixed to an air handler unit that works to clean polluted air and also kills germs. A lot of people have marveled and wonder about the working technique of air purifiers. The Air purifier basically, uses two kinds of air purifying techniques; Active and Passive techniques. We can use in our Kitchen so it can be an essential part of kitchen appliances as well to keep you secure and provide you fresh air, depending upon the usage, you can move it to your living room as well.

While the Passive air purifiers use filters to remove pollutants. The passive Air purifiers comprise of a single filter or multiple filters, and a fan that attracts in and spread air around. Usually, the filters present inward are made of paper, fiber (occasionally fiberglass), or mesh, and they require steady replacement to maintain their efficiency. The mechanism of how it works is that air moves inward through the filter and in the process pollutant and particles are captured. Afterward, clean air is shoved into the living space. A passive filter air purifier is more efficient than an active air purifier because it permanently removed all the dust and particulate matter from the air and collected into the filters.

Top 10 Best Air Purifiers 2021




Molekule Air Purifier
  • DIM: 0.0×8.26×12 in

  • Weight: 11.38 pounds

  • Coverage Area: 250 sq. ft.

  • DIM: 8.5 x 8.5 x 15.5 in

  • Weight: 7.7 pounds

  • Coverage Area: 280 sq. ft.

  • DIM: 13.38x7x20.27 in

  • Weight: 12.97 pounds

  • Coverage Area: 300 sq. ft.

  • DIM: 8.7×8.7×14.2 in

  • Weight: 8.88 pounds

  • Coverage Area: 219 sq. ft.

  • DIM: 8×13.6×8.3 in

  • Weight: 6.72 pounds

  • Coverage Area: 202 sq. ft.

  • DIM: 14.9×9.9×9.7 in

  • Weight: 6.64 pounds

  • Coverage Area: 160 sq. ft.

  • DIM: 13×6.7×21.2 in

  • Weight: 10.4 pounds

  • Coverage Area: 355 sq ft

  • DIM: 25x20x14 in

  • Weight: 38.9 pounds

  • Coverage Area: 438 sq ft

  • DIM: 13.8×10.88×20.88 in

  • Weight: 14.22 pounds

  • Coverage Area: 170 sq ft

  • DIM: 14.9×7.8×23.6 in

  • Weight: 17.66 pounds

  • Coverage Area: 360 sq ft

1. Molekule Mini Air Purifier – Best Mini air purifier 2021

Molekule Mini Air Purifier


  • Dimension: 0.0×8.26×12 in
  • Weight: 11.38 pounds
  • Coverage Area: 250 sq. ft.
  • Color: White
  • Fan speeds: 5 Manual speeds
  • Control: Touch display & App
  • Body Material: Medical grade polycarbonate
  • Handle Material: Natural felt
  • It is portable
  • Easy to carry and move around
  • The handle is made with a natural wool
  • Easy to control with your smartphone
  • Noiseless features
  • Ozone free
  • Unauthorized filters cause detrimental effects
  • Irritating blue light at night

Molekule Mini Air Purifier Review:

Molekule Air Mini is designed for small rooms measuring up to 250 sq.ft and it is made with nanotechnology that neutralizes viruses, Volatile organic compounds (VOCs), allergens, bacteria, and mould with its Photo Electrochemical Oxidation (PECO). It is a perfect air purifier for a studio apartment, bedrooms, homes, industries, and offices.

Molekule Air Mini is not difficult to use or control. It can be connected through the Wi-Fi to your smartphone (iPhone) for amenity or easy control. Although some users have complained about the blue light which they consider to be too bright for night time use in the bedroom.

The recommended replacement for average use is every 6 months. Delivery of an automatic refill filter and this includes 1 PECO-Filter to last about 6 months with average use. Any filter, that is not the official brand of Molekule product or the filter is sold any location other than Molekule is unauthorized for Molekule devices.

It is an expensive air purifier in the market and users can customize their purification needs, from whisper-quiet to boast mode. Molekule air Mini does not contain ozone but rather, it destroys destroy ozone but it weighs more than 20 pounds and this weight is heavy for some users especially children to carry.

2. Elechomes Air Purifier – Best air purifier for home 2021

Elechomes Air Purifier


  • Dimension: 8.5 x 8.5 x 15.5 in
  • Weight: 7.7 pounds
  • Coverage Area: 280 sq. ft.
  • Color: White
  • CADR: 220m3/H
  • Wind Speed : 3
  • Min Noise: 35dB
  • Control: Touch display
  • Sensor Type: D-ust Sensor
  • Trap airborne particles
  • Measures air quality
  • High efficiency
  • High purifying speed
  • It lights indicator measures performance
  • Feature sleep mode
  • It has a single filter
  • Air purifier gets dirty easily

Elechomes Pro Series Air Purifier Review:

It has an advanced activated carbon filter for maximum filtration and better health. It features a smart air quality sensor. Elechomes Air Purifier can purify a large room or space up to 280 sq.ft (26m²) with a purifying efficiency and purifying speed of 35% higher and faster than any other ordinary air cleaners.

This Air Purifier can trap particles as small as 0.3 microns, an example of such are pet dander, pollen, smoke. Air Purifier has three different color lights to show the air quality you live. Green color depicts the air is good, yellow color signifies the air is moderate and red color means the air is bad.

Automatically, the Air Purifier can modify the fan speed settings, so as to regulate the air quality. It makes a noise of about 35dsb in sleeping mode, which won’t even bother your sound dream. The filter has a running time of 3000 hours and an indicator light to measure the performance and also a flashlight to remind you about filter replacement.

The whole EPI236 filter comes as a single unit with a cylindrical canister. The entire filter is replaced at once if you open or during filter replacement. The top and bottom of the EPI236 contain a rubber foam seal that helps prevents air leakage. This rubber foam seal also helps to filter dirty and makes cleaning operation easier.

3. Aorda Air PurifierBest portable air purifier 2021

Aorda Air Purifier


  • Dimension: 13.38x7x20.27 in
  • Weight: 12.97 pounds
  • Coverage Area: 300 sq. ft.
  • Color: White
  • CADR: 210m³/h
  • Wind Speed : 3
  • It is 100% ozone free
  • Air purifier whispers at quiet sleep mode
  • Aorda produces clean air for kids, elders, and asthma patients.
  • The new timer will save energy
  • Smart system filters odors
  • Complex operating system

Aorda Air Purifier Review:

Aorda Air Purifier looks pretty great for a small room with an advanced stage filtration system that has 99.97% of odor capture that includes smoke, dust, allergies, pollen, pet dander. Not only this but also purify the air with 0.3 microns to clean the air by Aorda smoke eliminator and make the fresh air that can be good for asthma patients.

On backplane, this air purifier has a huge intake that delivers fast air purification within not time, if you have a 300 Sq ft room, it can just take 18 minutes to clean that with three-level fan speed. This is the best air purifier for bedrooms, offices, nurseries, kitchens, and living rooms.

The new version of Aorda air purifiers work great in sleep mode and also purify the air in an awesome way with its 32dB lower noise level, this process builds the natural atmosphere within a  room and also saves a lot of energy, a low cost or poor company purifier has one disadvantage, they increase your electricity bill, instead of this, Aorda comes with energy-saving options that work great and help you to save money. You have a child lock button to lock the panel to prevent it from the reach of children or pets.

4. Levoit Air Purifier – Best Air purifier 2021

Levoit Air Purifier


  • Dimension: 8.7×8.7×14.2 in
  • Weight: 8.88 pounds
  • Coverage Area: 219 sq ft
  • Color: White
  • Noise Level: 24–50 dB
  • Power Supply: AC 120V
  • Smart and amazing design
  • Lightweight air purifier
  • Displays light can be turned off
  • It includes a noiseless feature
  • Elegant timer
  • Carbon filter traps fine particles
  • HEPA gets hot too quickly

Levoit Air Purifier Review:

The purifying performance of Levoit air purifiers is very high because it has a large expansion area, with long length when compared to others. The HEPA filter works with ultra-fine pre-filters which activate it’s carbon filter mode, trapping 97% of fine particles, even as small as 0. 3 microns and large pollutants such as pollens, dust, smoke

It makes use of Core 300 with improved filtration to fill the environment with crisp and clean air. Levoit air purifiers create a stronger airflow with its Vortex air Technology and it can cover up to 215 sq. ft. For convenience, you can set a timer for 2/4/6/8 hours and it has a filter lifetime indicator. Levoit air purifiers are the most silent Air Cleaner and the level of noise is almost voiceless especially at sleep mode with only 24dsb. This is as a result of its advanced technology called “Quiet – Keep Technology”. This technology reduces heavy noise production so that users can sleep restfully.

The life of Levoit air purifiers is obviously extended because of its excellent internal structure and also the AC capacitor motor uses durable high-precision bearing which resists abrasion increasing. Levoit air purifiers are free from UV light, as its method of cleaning the environment. Research has shown that UV/Ion light produce harmful ozone and secondary pollution

he Association of Home Appliance Manufacturers (AHAM) has verified Levoit air purifiers. California air resources board (CARB) Complies with Levoit air purifiers as indoor cleaning devices that have verified FCC certification with CA Prop 65, that’s awesome if you are planning to buy this beast.

5. Bulex HEPA Air PurifierLighweight air purifier 2021

Bulex HEPA Air Purifier


  • Dimension: 8×13.6×8.3 in
  • Weight: 6.72 pounds
  • Coverage Area: 202 sq ft
  • Color: Black
  • Noise Level: 32 dB
  • Fan Speed: 3
  • Power Supply: AC 120V
  • Amazing in speed with high performance
  • Sturdy and beautiful design
  • Easy to carry
  • Smart sleep mode
  • It contains customized 4-speed fan
  • Blue LED light optimized efficiency
  • Filters small particles
  • Air purifier relies on carbon filter to trap smoke
  • Filter replacement annually
  • Considerably costly

Bulex HEPA Air Purifier Review:

Bulex HEPA Air Purifier can eliminate airborne particles that are little as 0.01 mil, and also large airborne particles such as dust, pollen, and allergens. This filtration process is possible because of the extra stage of filtration which can also help reduce lingering food smell, can capture smoke particles and activated carbon.

Bulex Air Purifier always ensure safety and prevent accidental injuries. Parents are completely at ease because of this feature. The design is muffled and the body is made with harmless materials. The size is compact and the weight is light with a well-customized fan and a timer for monitoring the energy and efficiency. A noiseless feature, having a whisper-quiet sleep mode with 32dB lowest noise keeps your baby in sweet dreams.

During dark hour’s parents are at ease, because the blue Led light keeps the environment bright and kid-safe from falling. The Optimized lagoon blue Led light provides users with a good feeling. The specific difference between Bulex HEPA Air Purifier and other brands is that it is designed based on aerodynamic principles to deliver high performance and the fresh air spirals upward towards the ceiling, circulating 320° in all directions of the room. The bright red filter light serves as a reminder for the replacement with a new filter.

6. Geniani Home Air Purifier – Best Room Air Purifier 2021

Geniani Home Air Purifier


  • Dimension: 14.9×9.9×9.7 in
  • Weight: 6.64 pounds
  • Coverage Area: 160 sq ft
  • Color: White
  • Fan Speed: 3
  • Stylish and compact design
  • The 3 stage filtration process
  • Geniani allows sufficient air filtration
  • It has a carbon air filter
  • Purifiers a large room
  • 3 different speed levels to choose from
  • Costly spare parts

Geniani Home Air Purifier Review:

Geniani home air purifier filters and removes dust, smoke, and allergens from the air in the home. It removes pet odor and a wonderful for cleaning large space. It has three different speed levels to choose or operate from and it works silently, regardless of the speed level (High or low-speed level).
Geniani home air purifier is highly built and quality made.

There is no doubt about it that Geniani air purifier is stylish, elegant, and smart with a pleasing compact design that will suit the decent and elegant look of the home. To ensure less disturbance and stress at night, the night light dims itself. Geniani home air purifier has three filtration process that ensures the home is free from dangerous allergens and bacteria.

Geniani air purifier filters are usually expensive to replace and difficult to locate in the market. Also, this 3 stage filtration feature allows sufficient air filtration, lower tobacco smoke level, pet dander, and Volatile organic compounds (VOCs). Geniani home air purifier is ARB certified which proves its high quality

7. Air Purifier – Best Air Purifier for allergies 2021

Airthereal Air Purifier


  • Dimension: 13×6.7×21.2 in
  • Weight: 10.4 pounds
  • Coverage Area: 355 sq ft
  • Color: White
  • Noise Level: 28-49 dB
  • CARD: 152 CFM
  • This elegant air purifier can purify a large room space
  • It can sieve small particles
  • Auto sleep mode
  • The new air purifier has a pre-filter
  • Powerful system to clean the room quickly
  • Elegant shape
  • It is only accessible from the bottom
  • The cartridge is difficult to locate

Airthereal Air Purifier Review:

Airthereal air purifier can purify 355 square feet (33m²) and also automatically controls or measures air quality. It can purifier an area within 10 minutes and a noticeable difference will be observed. It can be turn on smartly and it will select the correct air purification mode according to the environment. It’s activated carbon filter is awesome having a powerful mechanism to filter the air and also clears out dust and airborne particles.

More precisely, it has a decent design that doesn’t require large space, you can use it for your room, bedroom, restaurant, office, hotels, and lab, take it with yourself, where you want to go. Airthereal air purifier allows sleeping mode and this mode guarantee that the machine works noiselessly during sleeping hours. Replacement of filter should be done with only PM2.5 and to reset Airthereal air purifier, exert force on both the timer button and hold the fan button for 3 sec to reset it. The Airthereal air purifier filter can only be opened from the bottom rather than the front or back.

Airthereal air purifiers possess a unique compact filter cartridge. Users get all the filtration advantage in an inserted packed. Airthereal air purifier cartridge contains a HEPA filter and a pre-filter. This pre-filter is a 5-in-1 activated carbon filter that contains five different filters in the single pre-filter for effective cleaning.

8. BlueDri Green Filtration system – Best Air Purifier for mold 2021

BlueDri Green Filtration system


  • Dimension: 25x20x14 in
  • Weight: 38.9 pounds
  • Coverage Area: 438 sq ft
  • Color: Green
  • Clean both large and fine particles
  • majorly use in Hospital and construction sites
  • Two different types of HEPA filter present
  • Standardized HEPA filters
  • Best in removing foul odor
  • Hard to locate
  • Makes noise

BlueDri Green Filtration system Review:

BlueDri Green Filtration system has standardized HEPA filters which remove 99. 97% of substance that has a size greater than or equal to 0. 3 micrometers, BlueDri Green Filtration system has the capacity to destroy harmful airborne particles such as smoke, mould spores, sawdust, debris, asbestos, mildew, pet dander, pollen, and VOCs.

It is ideal for home repair and construction sites, mould and sewage remediation, water and fire damage restoration due to its operations at 3 different stages, each offering its own unique contribution to purifying the air. BlueDri air purifier does not feature wheels which can make it moveable from one place to another

The pre-filter protects the prime HEPA filter and it helps to clean large particles, allowing the HEPA filter to clean fine particles. It also has an optional carbon filter for removing smokes, foul odors, etc. The time displayers make this air purifier different from other air purifiers and also the location of the handle for easy movement.

The BlueDri air purifier although produce noise even at low speed and the pre-filter gets bad easily. BlueDri air purifier filters are difficult to locate and also they are expensive. They are perfect for purifying the air from allergens in a health care center or children’s playrooms while the separately sold filter is perfect for a salon or print shop for removing unwanted fumes.

9. Filtrete Console Air Purifier – Nature Fresh Air Purifier 2021

Filtrete Console Air Purifier


  • Dimension: 13.81×10.88×20.88 in
  • Weight: 14.22 pounds
  • Coverage Area: 170 sq ft
  • Color: White
  • Fan Speed: 3
  • CARD: 107
  • Easy replacement of Filtrete
  • Soft-touch control
  • It can capture unseen particles
  • Clean large rooms
  • High capture rate of polluted particles
  • The filter must be replace

Filtrete Console Air Purifier Review:

Filtrete Console Air Purifier is a device that helps reduce airborne particles in the air. It can eliminate up to 99. 97% of airborne pollutants that cannot be seen with the aid of the eyes. Small particles are filtered easily even if they are 0. 3 microns, mostly these particles include mould spores, dust, smoke, lint, and others.

It can be used to clean up large rooms that are up to 170 square feet with a smoke clean Air Delivery Rate of 107 CADR. Its soft-touch control enables it to alter the fan speed, set a run timer, dim the control panel lights, and reset the filter change indicator.

It has an in-build electronic filter change indicator that controls the panel and it will turn on or it will signify when a new filter is needed so you can never miss a filter change. The filter must be replaced every six months (this is based on 12 hours of usage per day). Filtrete Console Air Purifier offers more air circulation and at a higher dust and pollen capture rate than a comparison of other air purifiers, Filtrete Console Air Purifier Filtretes can easily be replaced without stress. Filtrete Console Air Purifier is the most trusted HVAC filter brand in America (2018 TNS Brand Health Tracking Study)

10. Winix 5300-2 Air Purifier – Home Air Purifier 2021

Winix 5300-2 Air Purifier


  • Dimension: 14.9×7.8×23.6 in
  • Weight: 17.66 pounds
  • Coverage Area: 360 sq ft
  • Color: Gray
  • Fan Speed: 4
  • Control: Touch display
  • It features a Timer
  • A smart sensor that gauges the air
  • Auto Mode adjusts the fan
  • Remove a wide range of allergens
  • Noiseless feature
  • Production of ozone
  • Poorly constructed
  • Very slow fan
  • Short down excessively

Winix 5300-2 Air Purifier Review:

Winix 5300-2 Air Purifier filter can eliminate about 99.97% of airborne pollutants present in the atmosphere. This pollutant includes dust mites, pet dander, pollen, and other allergens that are as small as 0.3 microns. It has a plasma wave that acts as a permanent filter to safely break down odor, allergens, chemical vapors, and other pollutants, amazingly it is ozone-friendly.

Winix 5300-2 Air Purifier has 3-Stage of cleaning, it also removes a wide range of allergens such as dust, cigarette smoke, pollen, odors, pet dander, mould spores, and organic chemicals. Winix 5300-2 Air Purifier can deliver an airflow of 236 CFM with decibels of 27.8. It has an added feature of a timer
It also has a sleep mode for silent night-time operation. CFM (Sleep (35.31) / Low (70.63) / Med (91.82) / High (123.60) / Turbo (/ 240.14). Although the fan of Winix 5300-2 Air Purifier is slow due to high energy use in cleaning the environment. It shorts down when using excessively and this may reduce the machine’s effectiveness.

Winix 5300-2 Air Purifier has been verified that it those not produce ozone. Very Few users have commented on the construction of Winix 5300-2 Air Purifier to be poorly constructed. Winix 5300-2 Air Purifier HEPA filter has no remote control with a CADR rated for 360 sq. ft. It is very suitable for medium and large rooms; kids bedrooms, baby nurseries, and offices.

Importance of Air Purifiers:

The importance of air purifier is that they can:

  • Eliminate stimulus for asthma attacks: An individual is at high priority public health risk when he is present in the home because the home is where the most asthma triggers are found.
  • Eliminate allergens present in the air: inhaling dust, pollen, and tobacco smoke can make the internal system to produce IgE, which in turn produce allergic reactions. To avoid these chains of reactions, air purifiers are needed to clean the air
  • Wipes out Radon gas: Lung cancer can be developed due to the inhaling of certain gases such as Radon gases. Radon gas is produced naturally, from the combination of uranium in the soil, rock, and water. The development of lung cancer can be prevented using air purifiers.
  • Remove dangerous insects such as mosquitoes: Air purifiers are very effective in destroying insects than insecticide sprays that pollute the air of your home and cause damage to your health.
  • Generate calm noise, which also improves individual sleep quality. Air purifier makes a soft, calm, and soothing sound that makes an individual hum to sleep. It is better than ceiling fans that make noise and disturb one’s sleep.

Do I need a Purifier?

Definitely, air purifiers are not a waste of funds at all. Everybody needs clean and fresh air in their home or surroundings. Most of the time we misinterpret the statement however there is no such chemical involved to purify the air, the purification process is clean and environment friendly.

An air purifying device is needed for the following reasons;

  1. An individual suffers from allergies or has asthma because air purifiers give a noticeable relief in your breathing
  2.  If an individual is prone to infection in the home or office, such an individual needs an air purifier.
  3. When you want to make your body free of germs and airborne toxins, it will do the smart job over here.

Do Air Purifiers Really Work?

People usually ask this question, whether or not air purifiers really work. The most important
thing people should be aware of is that an air purifier alone is not a sufficient solution to allergy
or indoor pollutant issues. You can simply say it is the process of the natural process of cleaning the air as we do like washing, dusting, mopping, cleaning, and disinfecting.

Of course, Air purifiers are manufactured for this process and they easily trap the airborne allergens and several other viruses and germs and kills them through proper filtration by generating granted thermodynamic with in the same process. This sterilizing system produces heat to kill viruses and bacteria, however, heat doesn’t affect the room temperature.

Benefits of Air Purifiers?

  • An air purifier eliminates stimulus for asthma attacks.
  • These can easily eliminate allergens present in the air
  • A perfect product to wipe out Radon gas
  • It also kills insects like mosquitoes and flies.
  • No noise when you run the air purifier machine
  • Doubles the air circulation and reduces humidity
  • Air purifiers reduce contamination in healthcare Centre’s or hospital
  • It lessens high carbon dioxide present in the home
  • These purifiers protect the elderly, children’s from respiratory illness
  • They also remove contaminations from the air, which usually cause stress
  • Air purifiers remove volatile organic compounds (VOC), which result in lowering the
    possibility of developing Leukemia and Lymphoma.

The Best Air Purifier

A lot of air purifiers are wonderfully manufactured but only very few are truly great. A great air purifier can really improve the quality of your air.
Levoit Compact Air Purifier is an excellent product and powerful machine that can;

  • You can clean the air
  • Noise-free, you can sleep well without any disturbance
  • Cheap and affordable, mostly, air purifiers come within a budget price
  • No complex settings, different air purifiers include different types of fans but all provide a huge level of satisfaction.
  • Levoit air purifiers have won several world-renowned awards and certification from the standard organization.
Conclusive Remarks:
In conclusion, among the aforementioned air purifiers, the following are considered the best air purifiers; Levoit air purifiers, BlueDri Green Filtration system, HEPA Air Purifiers, and Geniani home air purifiers.
They are considered as the best air purifiers for the following reasons;

  • These air purifiers are of high-quality and pocket friendly.
  • These air purifiers are the only device strictly tested and certified by several standard organization. Especially Levoit air purifiers which have won several world-renowned awards such as The Reddot Award for their design and high-quality machines.
  • The customer review and satisfactory report of the product usage have been positive and commendable thus far.

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