Best Air Purifier 2021 – Buyer’s Guide

best air purifier

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When it comes to shopping online for the best air purifiers, Amazon has some awesome deals. I have researched and tested several air purifiers to bring you the best air purifiers. I used my experience, customer reviews, brand reputation, and product features as well as design highlights, to come up with this list of top-rated air purifiers. All the air filtration units in this post cater to individual style, choice, cost, and quality. Although they are quite pricey, you will find them effective and will freshen up the air in your home thereby reducing cases of allergic reactions and improving overall health. Saving money on treating allergy medications should always be taken into account when buying an air filtration unit.

If you are looking for an effective and quality air purifier, then check the eight devices I have reviewed. I’m sure you will find one that suits your needs and home.

Top Air Purifiers Comparision

Product NameRoom Size
(sq ft)
CADR  
1. Dyson Pure Hot Cool Link Air Purifier172N/ASee Details
2. Rabbit Air MinusA2 Air Purifier (SPA-780A)
815193
High EndSee Details
3. PureZone 3-in-1 Air Purifier20080See Details
4. Alen BreatheSmart Air Purifier1100Smoke 270 - 300 (estimated)Best for Large SpacesSee Details
5. Whirlpool Whispure Air Purifier (AP51030K)500315See Details
6. Coway AP-1512HH Air Purifier361233 (smoke), 246 (dust), 240 (pollen)Editor's ChoiceSee Details
7. AeraMax 100 Air Purifier for Allergies and Asthma100-200ExcellentBest for Allergies and AsthmaSee Details
8. GermGuardian AC5250PT 3-in-1 Air Purifier200125+Best Budget & Best SellerSee Details

1. Dyson Pure Hot Cool Link Air Purifier

Known for making vacuum cleaners, Dyson, a British company, has ventured into the air purifiers industry and Dyson Pure Hot Cool Link is one of the best air purifiers they have made. It is one of the most technologically advanced air purifiers in the market as it offers automatic air cleaning and can also connect to a smartphone. Besides, this air purifier doubles as a heater and fan, making it cost effective for people who want to warm up or cool off while cleaning the air.

Dyson Pure Hot Cool Link automatically removes 99.9 percent of all pollutants and allergens including pollen, pet dander, and bacteria. This air purifier is wrapped with a vacuum-sealed glass HEPA filter. It has a layer of activated carbon granules that captures harmful toxins and odors
such as paint fumes. It can act as a purifying fan during the summer season with a smooth air floor that keeps your home cool. This device can connect to Dyson link app to enable you to operate it remotely using your phone. It also features a night-time auto mode that monitors and
purifiers. The LED display reduces brightness at night to eliminate disturbance.

Features at a glance

– It has triple functionality acting as a purifier, fan, and heater
– It uses HEPA filters which removes 99.97% of pollutants and allergens
– Automatically monitors the quality of air and reacts
– Has an auto mode, night-time mode, sleep timer, and easy to clean

Pros

 Advanced technology that enables it to clean air automatically

 Connectivity features allowing it to be controlled via a smartphone

 Uses highly effective HEPA filters

 Doubles as a heater and fan

Cons

 It is quite pricey

 It requires more maintenance

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2. Rabbit Air MinusA2 Air Purifier (SPA-780A)

If you are in an area where there is too much dust, then Rabbit Air MinusA2 is the best air purifier for your needs. This air purifier is designed to adapt and complement your home. I found it very convenient and can fit all your personal needs.

It is made of high-grade granular activated carbon filters which are coated with AC. This ensures household chemicals and odors have been effectively reduced. This purifier has a negative ion generator that releases beneficial ion to freshen up your indoor environment.

Features at a glance

– It comes with high-quality filters that reduce odor and traps volatile organic compounds
– It is designed to stand on its own or fixed on a wall
– Contains HEPA filters to trap 99.97% of the airborne particles. This minimizes allergens
– It covers 800 square per foot

Pros

It traps airborne particles, mold spores, and bacteria

 It is very thorough in the way it functions

 It is adaptable since you can either let it stand on its own or mount it on a wall

 It runs quietly, and I found it highly energy efficient

Cons

 It is a bit expensive as compared to other air purifiers

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3. PureZone 3-in-1 Air Purifier

The PureZone 3-in-1 is a powerful but compact little unit that can make a good portable purifier for people who would like to move them to different rooms. It is equipped with handles and is small in size making it easier to move it around.

The 3-in-1 means that it has three filters that include pre-filter, a True HEPA filter to trap micro-pollutants, UV-C light to zap viruses and bacteria, and activated carbon for odors.

This air purifier operates quietly and has an automatic timer that allows you to shut it off after two, four, or eight hours of continuous use.

This unit also features a filter reset indicator that lets you know the optimal time to replace the filters. This saves you the hassles of having to keep a record of the last time you replaced the current filters. It also offers three fan speed settings that enable it to fit any environmental condition. Being a smaller unit, PureZone 3-in-1 Air Purifier is meant for use in smaller rooms. Its manufacturer claims that it can clean up to 200-square feet. All these features and many others make it one of the best air purifiers.

Features at a glance

– It is fitted with HEPA filters that remove 99.7% of dust and pollutants from your home
– It uses UVC light which sanitizes bacteria and germs at the same time
– It comes with an automatic shutoff timer
– It is energy efficient

Pros

 Excellent value for its price

 Operates quietly at lower speeds

 Filtration sensor enables you to know the optimal time to change the filters

 It has a timer with settings for different durations

Cons

 It doesn’t clean air in large rooms

 The UVC light tends to dry the indoor air

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4. Alen BreatheSmart Air Purifier

The Alen BreatheSmart Air Purifier has high-quality HEPA filters that deliver cleaner and fresher air throughout your home. Perfect for open concept rooms, living rooms, and other large rooms of up to 1100 square feet, the Alen BreatheSmart Air Purifier efficiently and quietly removes dust and allergens, purifying your indoor air in lesser time. This high-performance unit features a  SmartSensor that automatically detects and adjusts to different air conditions, thereby conserving energy and prolonging its filters life.

Its WhisperMax technology utilizes pink noise to reduce irritating high-frequency sounds thereby enabling this unit to purify the air in your home in a quiet and calm manner. Alen BreatheSmart Air Purifier is fully customizable offering four filter types to accommodate varying air purification needs. It also features a 14-panel color option to match your home décor.

Features at a glance

– It is capable of removing 99% of pollutants and airborne particles
– Can purify air in spaces of up to 1100 square feet
– It features WhisperMax technology that ensures quiet operations
– Comes with an impressive lifetime warranty
– Features four HEPA filters that are highly customizable for specific needs
– Can eliminate pollutants and particles as small as 0.3 microns from your indoor air

Pros

 It comes with lifetime warranty

 Cleans up to 1,100 sq. feet of space; this is one of the largest footprints I have reviewed in this post

 It is highly efficient and effective in purifying air

 It has been proven to be effective

Cons

 It can be noisy at higher settings

 There are some complaints of auto-sensor issues

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5. Whirlpool Whispure Air Purifier (AP51030K)

Whirlpool is another dependable brand that has made a name for making durable and quality air purifiers. Their latest unit is Whirlpool Whispure Air Purifier and removes dust mites, smoke, mold spores, and pollen while operating quietly. It is great for a household with babies, allergic adults, and noise-sensitive people. You can barely hear this unit while it is operating even at high settings which makes it suitable for homes.

It removes small particles such as ragweed, pet dander, and other microscopic irritants thanks to HEPA filters that trap and destroy them thereby improving air quality that could otherwise worsen asthma and allergy symptoms.

The Whirlpool Whispure Air Purifier is relatively cheaper and is a suitable option for budget-conscious customers.

Features at a glance

– It removes 99.97% of airborne contaminants
– Can Come with high-quality HEPA filters, washable pre-filter, and carbon activated filter
– Can purify air in rooms of up to 500 square feet
– Features a 3-stage filtration system
– Backed by a 1-year warranty
– Offers four fan speed settings
– Offers four fan speed settings
– It is powerful enough to remove animal odors

Pros

 Doesn’t require frequent replacement of HEPA filters

 It is noiseless especially in sleep mode

 Charcoal filters fitted in this unit are easily replaceable

Cons

 Not very effective in removing some odors

 It makes some sound when turned to higher settings

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6. Coway AP-1512HH Air Purifier

In case you are living in a small room and you are looking for a suitable purifier, AP-1512HH Mighty Air Purifier from Coway is a proven machine that will freshen up your air and eliminate contaminants. Though this machine has a compact design, it features a four-stage filtration that can cover up to 361 sq. feet. It is quite different from most air purifiers as it has several filters including a carbon filter for eliminating odors, a pre-filter, a visual ionizer, and high-grade HEPA filters for eliminating air pollutants floating in your home, leaving your indoor environment perfectly purified.

The best thing with high-grade HEPA filters is that it has an eco-mode which makes it more environmentally friendly. Modern air purifiers have air-quality adjustment feature where sensors detect air quality and modify their operation based on that. Coway has enhanced this feature and stops working when it detects no pollutants and within 30 minutes. This helps to save energy. It is not only a good way to save money but also eco-friendly.

Overall, I found it a quality air purifier and one thing I love in it is its simple design and square shape, which enables it to fit almost everywhere, even in small spaces.

Features at a glance

– It has a 4-stage filtration system
– Features an auto mode
– Can purify air in rooms of up to 500 square feet
– Features a 3-stage filtration system
– It also has particle sensing technology
– Quiet operation
– Offers four fan speed settings
– 3-speed airflow control

Pros

It has a powerful 4-stage filtration system

 The eco-mode enables it to save money and energy

 Its filters are easy to clean

 It runs quietly, and I found it highly energy efficient

Cons

 It makes considerable noise when running in higher settings

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7. AeraMax 100 Air Purifier for Allergies and Asthma

This air purifier features AeraSmart sensor that automatically detects air quality and changes purification speed. This unit features HEPA filters with AeraSafe antimicrobial treatment that safely eliminates 99.97% of airborne particles as well as small pollutants such as ragweed, pollen, and other allergens such as germs, viruses, cigarette smoke, mold spores, and dust mites. Besides, it is certified allergy and asthma friendly by AFA (Allergy Foundation of America).

It has a particular mode for flu and cold season that makes it efficient for capturing influenza virus from your indoor environment. This air purifier can purify the air in a space of 100-200 square feet.

Features at a glance

– It boasts a 4-stage filtration system
– Has an AeraSmart sensor technology that enables it to detect pollutants and purify air
-It contains a true HEPA filter with AeraSmart technology that enables it to eliminate up to        99.97% of ragweed, pollen, mold, smoke, and dust
– It can clean air with 100-200 square feet
– It is highly portable thanks to its small size
– It comes in two color options
– It is certified asthma and Allergy friendly by Allergy and Asthma Foundation of Amerca

Pros

 operates quietly and it has adjustable fans

 It is compact and therefore saves floor space

 It has an inbuilt carry handle

 The ionization feature can be turned off

 It features an auto-air sampling mode

Cons

 It tends to release dry air when running at higher settings

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8. GermGuardian AC5250PT 3-in-1 Air Purifier 

This air purifier from a reputable brand, Guardian Technologies, consists of HEPA and Pet Pure filters. The HEPA filter captures 99.97% of allergens including dust mites, pet dander, and pollen. While Pet Pure filters are antibacterial agents added to the filter to inhibit mildew, mold, and odor-causing bacteria from reaching HEPA filters.

Besides, it has a charcoal filter that eliminates common odors from cooking, smoking, and pets. It also has UV-C light technology that combines with Titanium Dioxide to kill viruses, airborne bacteria, mold spores, and germs. Also, it is equipped with a 28-inch digital tower that has five speeds which makes it suitable for use in medium-to-large rooms. This air purifier is perfect for people with allergies.

Features at a glance

– It is CADR rated at 125+
– Has an AeraSmart sensor technology that enables it to detect pollutants and purify air
– It has HEPA filters that can remove 99.97% of particles including dander dust and pollen
– It features Pet Pure that help prevent odor-causing substances from reaching HEPA filters
– UV-C light technology together with Titanium Dioxide neutralizes mold, bacteria, and viruses
– It features charcoal filter technology that removes common household odors
– This unit features a digital display

Pros

 It is one of the best air purifiers I have ever used

 It runs quietly

 It reduces dust flying in your indoor environment

 Clears up pet odors perfectly

Cons

 It has a loud filter reset alert

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Air Purifiers Buyers Guide

Factors to consider when buying Best Air Purifiers

If you are still not sure of the best air purifier to buy, here are several things to look out for;

Clean Air Delivery Rate (CADR)

The CADR is a concise indicator that defines the volume of air filtered. If there is a great amount of tobacco, pollen, dust particles, and other microbes in your indoor environment, you need an air purifier with a higher CADR.

The efficiency of air purifier is normally measured using CADR. The size of the room (square footage) and the rate of purification are directly related. A higher Clean Air Delivery Rate means that the air in your indoor environment will be purified at a faster rate.

To ensure you buy the best air purifier, make sure to compare the CADR of different brands of product to know the best performing unit.

Filtration Technology

There are various filtration technologies, but you should look for air purifiers that have HEPA filters and carbon filters.

Features

Of course, you have to check the features of your unit; the more features it has, the better. Some of the crucial features to look for in an air purifier include shut-off timer, UV light, a filter life indicator, and air quality sensor, and more.

Effectiveness

The effectiveness of a unit is based on utter performance; this means that a quality air purifier should remove at least up to 99 percent of pollutants and airborne particles.

Square Footage

Air purifiers perform optimally at a certain size. This is one of the specifications that you must look into when purchasing an air purifier.

Different Types of Filters

Air filters are an important component of your home’s cooling and heating system. Their primary function is to trap dust, dirt, and other harmful pollutants from the air. Clogged and dirty filters can affect the performance of your air purifier.

To understand how filters work and how to change them, here are the different types of filters;

HEPA Air Filters

These are extremely efficient and can remove up to 99% of airborne particles. They can trap smaller irritants such as mold or pollen. They are the best filters on the market.

Carbon Air Filters

When treated with oxygen, carbon becomes highly absorbent. After being treated with oxygen, it becomes activated carbon because it can trap odors and absorb particles. Carbon filters trap gases and chemicals, and can also filter cigarette smoke.

Pleated Air Filters

These are made of folded sheets of cotton or polyester-blend fabric. Air filters with more pleats per square foot are recommended since they allow more air to your home. These filters have superior dust-stopping ability.

Fiberglass Air filters

These are the most common type of filters and are extremely affordable and disposable; they are developed to protect your air purifier. For people with allergic and asthmatic problems, purifiers with these filters are a better option.

Air Purifier Frequently Asked Questions

What Do Air Purifiers Do?

Air purifiers eliminate allergens such as dust, mites, mold spores, and pet dander as well as smoke, exhaust emissions, and other chemical vapors.

How Does an Air Purifier Help In Containment of Allergies?

An air purifier draws in air and passes it through different filtration layers. Contaminants, allergens, and particles are trapped in the filters and purifies air is released into the room.

After How Long Should I Change or Clean The Filters?

Pre-filters need to be changed after 4-5 months while HEPA filters should be changes 2-4 years. However, these depend on factors such as tobacco smoke, indoors pets, or a fireplace. Some brands have filter life indicators to notify you when a filter needs to be changed.

Related Aritce: How To Clean A HEPA Filter In Few Easy Steps

Can I Open the Windows When the Air Purifier is Running?

Yes- you can allow a little fresh air to enter your home while your purifier is working. For more: Can I Use Air Purifier With Window Open?

Are Air Purifiers Worth It?

Considering that air purifiers are quite pricey, it is natural to wonder if they are worth it. If you’re sensitive to air quality, you will probably need an air purifier. If you suffer from allergies, you will also need an air filtration unit. They eliminate over 99% of air pollutants.

Related Article: Can An Air Purifier Help You Sleep Better?

In Conclusion

I hope you have found a suitable unit among the best air purifiers I have discussed here. If not, I hope the buyer’s guide I have provided will help you pick the best air filtration unit that will work best for you. And although all air purifiers are not created equal, any of the above devices will work out well for you. It can make a huge difference in improving the quality of air that you breathe.

Once you purchase your unit, ensure to keep the surrounding of the area you will install it clean. This is because keeping the surrounding areas dusty and untidy will cause the unit to do unnecessary work. Also, you should regularly check its filters to see if they are clogged with dirt and dust as a clogged device will not perform optimally. If the filters become obsolete, don’t hesitate to clean or change them for the sake of your health. You also need to check your unit’s grills and exterior panels for dust.

I hope this post was helpful to you. Let us know which purifier you are most fascinated with and why.