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Top 10 Best Air Purifiers in 2021

Experts at OwlRatings researched for days and finally came up with the following ten air purifiers that are perfect to be used all around the air, for any problem. Whether you have allergies due to pets or pollens, or you are tired of the unpleasant kitchen smells from spreading all across your house, the following units work perfectly!

Reasons to look for a good air purifier

There is an increasing concern about the levels of air pollution indoors as well as outdoors. While you cannot control the air pollution outside, you can definitely control its levels indoors. Air Purifiers are small electronic devices that can remove most of the tiny harmful particles like dust, dust mites, pollen, pet dander, allergens, and germs from the air. Furthermore, these units are also great for removing unpleasant odors. Wildfires, smoke, VOCs -it can eliminate them all.

Almost all of the air purifiers that you will find in the market will have HEPA technology filters. HEPA filters, or High-Efficiency Particulate Air filters, are a kind of pleated mechanical air filters that can remove up to 99.97% of airborne particles from the air that have a size of 0.3 microns or more.

Removing these pollutants and allergens from the air can have numerous health benefits that can benefit you in the long term. Some of the most common benefits include improved sleep quality, high life expectancy, and a drastic decrease in allergies like asthma.

Did you know that every one out of 12 people has asthma? For those who do not know, asthma attacks are usually triggered by small particular matters like pollen dust, dust mites, and pet dander and if not treated in time, you can end up in a hospital with breathing difficulties. These attacks can be reduced if you have an air filter at your place.

So whether you want to eliminate harmful chemicals, radon, asbestos particles, or just reduce the chance of asthma attacks, an air purifier is the best available option.

Best overall

Germ Guardian AC4825E air purifier

Germ Guardian AC4825E air purifier

This air purifier is ideal for people who want to keep their environment clean as much as possible.

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Germ Guardian’s AC4825E Air Purifier is ideal for all those people who love a tech-savvy unit that offers features you might not find anywhere else. It provides the perfect sanitation for your place and makes sure to kill every type of germs, allergens, viruses, and mold spores from the air.

The unit is a 4-in-1 air purifier that contains a HEPA filter that captures almost 99.97% of airborne particles, a charcoal filter that eliminates odors from the air, UV-C light that removes viruses and allergens from the air, and finally a TIO2 that collaborates with the UV-C lights to reduce the presence of Volatile Organic Compounds (VOCs) from the air.

We appreciated the silent operation of the unit. There is not a single electronic device in the market that does not make noise but the best ones are which produce the least decibels of noise even while operating at high speeds; such as the AC4825E. While at a low speed, the device becomes so quiet that you will forget it is functioning. On the other hand, at higher speeds, you might hear a slight buzz but all’s good! It will not disturb you.

Furthermore, the unit has a pretty simple interface. So you will not find trouble operating the device, even if it is your first time. Though, if you do find any trouble, just check the instructions manual that it comes with!

Best for allergies

LEVOIT Core 300 air purifier

LEVOIT Core 300 air purifier

It is ideal for people who want a quiet operating air-purifier that can eliminate almost all of the allergens and pollutants from the air.

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LEVIOT’s Core 300 Air Purifier is ideal for everyone who has allergies. The unit is extra quiet while operating and works extra hard to eliminate unpleasant odors and airborne allergens from the atmosphere. Wherever you place this small yet powerful unit, you will find clean and fresh air to breathe in.

The air purifier has a 3-in-1 filter combination. It contains H13 true HEPA filters that work together with pre-filters and activated carbon filters to remove all harmful or dangerous particles from the air. Furthermore, the unit also has a toxin absorber filter that works against smoke, VOCs, and wildfire. Besides this, it also contains a pet allergy filter that catches all pet dander and pet odors (specifically from their litter boxes).

The device also features Vortex Air Technology, QuietKEAP Technology, and Sleep mode which just adds to the overall value of the product. The brand has made sure that the unit includes every feature that might benefit the customer.

We were also very surprised by how quiet the operation was. Though, of course, ear sensitivity plays a major role here. People who are sensitive to noises might find the buzz a bit above the normal noise level threshold. However, we personally don’t think the noise is even noticeable. It barely makes 24dB noise which sounds like a slight buzz.

Best ease of use

Winix 5500-2 air purifier

Winix 5500-2 air purifier

If handling highly technological and advanced devices is not your forte, then this air purifier is perfect for you.

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Winix’s 5500-2 Air Purifier is simply magnificent. It is one of the most reliable, durable, and convenient units that we have come across during our research. The air purifier is a mid-range electronic that contains many features like a true HEPA filter, AOC carbon filters, sensors to gauge the air, and Plasma Wave.

The true HEPA filter eradicates the pollutants from the air whereas the AOC carbon filter is made from tiny carbon granules which attract different kinds of smells towards it and eliminates the most unpleasant ones. The PlasmaWave is a permanent filter that efficiently breaks down allergens, chemical vapors, and other pollutants from the air.

The smart sensors gauge the air while on the other hand, the auto mode adjusts the process of filtration according to the surrounding atmosphere. So, if you buy this unit, you can sure that the air will always be fresh, clean, and hygienic in the room.

We were let down a bit by the noise level. Though, you might notice the noise when it is operating at a low speed. At a higher speed, it can operate at a noise level of 54.8 dB which is perceptible to people with sensitive ears. Although, you can still hear the TV over the air purifier even if it is working at its highest speed.

Best for viruses

Honeywell HEPA Filtration HPA300 air purifier

Honeywell HEPA Filtration HPA300 air purifier

If you have any breathing problems, then this one can definitely keep them at bay.

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Honeywell’s HPA300 HEPA Air Purifier is the device to buy if you are thinking of placing it in extra-large rooms with an area of 465 square feet or less. This unit is pretty good at capturing if not all, most of the pollutants, allergens, and other particles that are floating freely in the air. It reduces their density in the room and offers clean air circulation all around the clock.

The HEPA filter and the carbon pre-filters keep the air clean and pleasant whenever it is functioning. Furthermore, the unit regulates the air in a room almost five times per hour. The unit can remove particles as small as 0.005 microns.

The most notable feature of the unit is its cleaning levels. The unit has four levels that you can select from; allergen, germ, pre-filter turbo. So, if you or someone in your family has asthma or other allergies due to pollen, then this is the one for your place.

Moreover, we appreciated the small yet convenient features that the device is loaded up with. It possesses a filter change indicator, a reset button, a control panel dimmer, and a shut-off timer. Honestly, the company has done a pretty good job in ensuring that you have the entire control of the unit.

Best for dust

Coway AP-1512HH air purifier

Coway AP-1512HH air purifier

If you live in an area with frequent winds that instantly cover your entire house in dust, then this one can help you combat this problem.

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Living in an area that frequently welcomes strong winds is a nightmare but it won’t be if you have the mighty Coway’s AP-1512HH Air Purifier! The device features a true HEPA filter, washable pre-filter, a deodorization filter, and a vital ion that works together and eliminates all the contaminants from the air accurately.

The pollution sensor evaluates the quality of the air indoors and updates you about it so that you can change the settings accordingly. In addition to this, the unit features three fan speeds to give you better control of the air quality. It also has the auto mode that optimizes the functions according to the environment. The timer and filter lifetime indicator is also useful and keeps you aware of the condition of the air purifier 24/7.

The noise level is also bearable. The strongest fan speed does make considerable operational noise but it is not too loud. It produces less than 60 dB noise at maximum functionality which is the average noise level during a conversation. Though it is perceptible, we can overlook this flaw because of its efficient air purifying feature.

The gadget has a simple and compact design with only 12 pounds of weight. Hence, it is small enough to take with you anywhere you want. It is convenient, easy to use, and ideal for large rooms.

Best for pets

Levoit Vital 100 air purifier

Levoit Vital 100 air purifier

This unit is ideal for anyone who has allergies to pet hair and pollen.

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LEVOIT’s Vital 100 Air Purifier has a durable construction, a robust filtration system, silent operation, and power fan options. It contains all the features you might require in an Air purifier, especially if you are looking for a unit to use because you have allergies because of pet hair, pet dander, and pollen.

The most notable feature for us was its large air intake. It ensures that all the pet hair and other contaminants are removed efficiently and precisely from the air. The next thing that caught our eye was its intuitive interface. It is extremely easy to use and control.

The light of the display screen can be dimmed out or completed turned off which is perfect if you want to use the unit during the night. With three timer options (2,4, and 8 hours), the unit is ideal for nighttime use. It produces only 23 dB noise when it is at its lowest setting whereas it makes 50dB at the highest level.

When it comes to effectiveness, the brand has made sure that the Vital 100 completely wipes out all the pollutants from the air. It possesses a pre-filter, a true HEPA filter, and an activated carbon filter that not only clears out small particles like pet fur, hair, fibers, lint, mold spores, and bacteria from the air but also absorbs unpleasant odors.

So whether you want to reduce the odor of your pet’s litter box or the smells from the kitchen, we feel like the unit was made for this reason!

Best premium

Blueair Blue Pure 211+ air purifier

Blueair Blue Pure 211+ air purifier

It is best for people who are looking for a lightweight air purifier that can clean large rooms quickly.

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Blueair’s Blue Pure 211+ Air Purifier is a small device that gas the power to clean large rooms, approximately 525 square feet of area. It can clear out unpleasant odors of smoking, cooking, wildfire and also remove the airborne pollutants from the air simultaneously.

Adorned with a washable pre-filter, a particle filter, and an activated carbon filter, the device cleans up the air pretty quickly, irrespective of how small or large the room is. These three filters are guaranteed to capture almost 99% of the bacteria, allergens, and germs that are floating aimlessly in the air. Furthermore, the LED warning system is a valuable addition; it keeps you updated about the filter quality and alerts you as soon as it is time to change it.

We were not able to hear the unit over the TV when we set it at its lowest setting. However, when we set it at the highest speed, we could hear the unit clearly. Generally, it produces 31 to 56 dB(A) noise while it is working.

It has a simple and intuitive design and you will easily be able to figure out the controls on your own, even if you are a first-time user. Despite the loud noise at the highest setting, we would recommend this to anyone who wants an air purifier that can clean huge rooms quickly and can remove odors effectively. Lastly, it is available in many colors.

Best for smoke

Medify Air MA-40 air purifier

Medify Air MA-40 air purifier

If you have a sensitive sense of smell and you want to completely remove different irritating odors from the air, this is the one.

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If your biggest and foremost priority is an air purifier that removes smoke, formaldehyde, and other kinds of harmful odors from the air, then you will like Medify Air’s MA-40-W Air Purifier. Moreover, it is just as perfect for removing harmful particles like dust, dust mites, pollen, pet dander, and allergens from the air.

The unit possesses a 4-stage filtration process that eliminates 99.95% of the particles and odors from the air. The process includes four types of filters; a pre-filter, true HEPA filter, activated carbon filter, and an ionizer. Combining their forces, the four filters to their intended job (to clean the air from odors and particles) perfectly.

Whether it’s wildfire, cooking smells, smoke, or other toxins, the filters make sure to eliminate them all. Furthermore, we liked that we had the option to use the ionizer or not since some people do not like using it.

Features like the smart sensors, auto mode, child/pet lock, and LED indicator makes using the device extremely easy and convenient. However, the only disadvantage of the unit is its perceptible noise level which makes it unsuitable for nighttime use. We think it is perfect for homes and especially offices during the daytime because you might be able to ignore its noise over all the hustle-bustle.

Best for mold

Hamilton Beach TrueAir air purifier

Hamilton Beach TrueAir air purifier

It is a compact air purifier that can clean even the tiniest speck of mold from your place.

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Hamilton’s Beach TrueAir Air Purifier is for people who are looking for a simple yet high-tech unit that possesses all the necessary functions one needs to minimize pollutants and unpleasant odors from the air. It is space-efficient and lightweight so you can easily take it with you anywhere you want!

The 3-stage filtration process is made from a true HEPA filter, carbon zeolite filters which can easily be replaced, and a pre-filter. All of these filters remove pet danger, bacteria, germs, dust, and dust mites from the air with an efficiency of 99.97%. the HEPA filter particularly captures pollutants smaller than 0.3 microns.

The fan speed is also adjustable at three distinct settings; quick clean, whisper clean, and med. The fan operates silently. You can definitely use the unit during the nighttime but at the lowest level, especially if you have sensitive ears and light sleep. The highest setting produces a muffled buzz that is ignorable during the daytime.  

The unit also requires minimum maintenance. The filters can be washed many times and need to be replaced only when the quality deteriorates so this reduces the overall operational cost. Furthermore, this particular air purifier costs way less than similar models but offers just as amazing features. So, if you are trying to save money, then purchase this unit. It is efficient, user-friendly, and lightweight!

Best affordable

PARTU BS-03 air purifier

PARTU BS-03 air purifier

This product possesses all of the major features as well as some advanced ones which make it one of the best affordable unit in the market.

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PARTU’s Air Purifier is a low-priced electronic that performs just as well as the high-end models. It is fast, precise, and has an efficacy rate of 99.9%. So, whether you have allergies due to pet hair or dust or you find the unpleasant odors from the kitchen, this unit is for you.

Its powerful filtration system is a 3-stage process that features a HEPA filter, pre-filter, and an activated carbon filter that work together and makes sure to keep your allergies at bay. It can clean particles as small as 0.3 microns and odors as unpleasant as smoke.

The cylindrical air purifier adorns an air outlet at the top whereas the filters are situated at the bottom along with the air inlets. The child lock keeps the children or pets from messing up the settings. Furthermore, it possesses three fan speeds as well as a nighttime display screen which makes it ideal for nighttime use.

One of our most favorite features in the unit is the fragrance sponge. All you need to do is drop a few drops of your favorite fragrance or essential oil on the sponge and place it back in its place (which is at the top). Now, whenever you turn the unit on, the fan will push the fresh air as well as the fragrance out in the air and make your entire room smell refreshing, and just pleasant.

Lastly, the noise level is between 38 to 59 dB which is typical for air purifiers. Though the highest speed is not ideal for nighttime, the other speeds might work perfectly.

What’s important when choosing an air purifier

Noise level

No one wants a device that makes loud noises and keeps you distracted. So, the first thing that you need to notice in an air purifier is its noise level.

You might have noticed in the above reviews that a lot of units have three or more fan speeds. The fan is the major component in an air purifier that produces noise. The larger and the faster the fan operates, the more noise it would make. However, a larger fan and higher speed mean that the unit is working to its maximum potential and will most likely wipe out every particle and odors from the air.

Typically, the air purifiers have a noise level between 20 till 60 dB. One thing that you need to understand is that all electronic devices make noise. If they are turned on and operating, you will hear it while it’s working. Thus, you need to evaluate the level of noise you are most comfortable with.  

Features

Check out the different features the unit has. Some of the most useful features, in our opinion, are washable filters, LED indicators, and an auto or night mode. These features generally add to the comfort and convenience and elevate the user experience.

However, many units have other advanced features as well such as a timer, smart sensors, and air quality indication. However, devices that have these units can be expensive.

Effectiveness

Check the filtration system of the unit. Most units typically have a filtration process comprising of three or four filters.

A pre-filter removes large particles like dust, dirt, debris, and hair whereas a HEPA filter captures small particles like microorganisms, pollen, and bacteria. The activated carbon filter absorbs unpleasant odors.

The ionizer is an optional feature that is present in some models. These are effective in removing small-sized pollutants like mold, pollen, dust, smoke, and chemical toxins. However, they increase ozone exposure which can be hazardous for your health. This is why most models which do have an ionizer can be turned on and off manually.

Room size

You need to decide where you want to place the air purifier. Different air purifiers work differently in different room sizes. Though using a high-capacity air purifier might work even in a small room, the opposite is not suitable.

If you buy an air purifier that does not circulate enough air for your room, then it can result in sub-optimal cleaning. So always check if the air purifier can easily clean your space.

FAQ

Where should I place my air purifier?

You need to place the air purifier in a place that has the highest concentration of smoke, dust, or other airborne particles and indoor airflow. So, you can place it in the hallway, living room, or any place in your house or apartment that has the highest air exchange.

Also, make sure that you install the air purifier almost 3-5 feet above the ground. This would help in horizontal and vertical air circulation. Last but not the least, never place an air purifier in a corner because they have the lowest airflow as well as harmful particle concentration. Typically, the air quality is adequate in the corners.

Does an air purifier make air dry?

No, an air purifier does not make the air dry. It does not have any mechanism that draws the moisture from the air. As discussed above, the unit simply passes the air through various filters which captures small particles and chemical gases and that’s all.

Are air purifiers bad for you?

Not really. Air purifiers are ideal for removing impurities from the air. However, as we discussed above, some units have an ionizer that is made from an ion generator. This means it uses ozone to clear out the pollutants and this can be harmful.

Not to worry though! You can switch off the ionizer easily in most units and only use it if you want to.

Final verdict

Buying an air purifier has many benefits; it can reduce asthma attacks, improve the air quality at your place, and enhance your sleep. If you are thinking of buying an air purifier for your place, check its noise level, features, effectiveness, and the room area it supports before your make a purchase. These will make sure that you end up with the perfect air purifier for your place.

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