Home & Garden

The 11 Best Air Purifiers You Can Buy In 2021

If you’re looking for the best home air purifier for your home you’ve come to the right place! Below we’ll be reviewing the top 11 air purifiers on the market.

Recent air filter statistics from the Center for Disease Control (CDC) and Environmental Protection Agency (EPA) showed that the air inside one’s home can be five to ten times dirtier than outside air, with Americans spending about an average of 90% of their lives indoors.


Best Air Purifier 2021


Dyson Pure Cool Link

The Dyson Pure Cool Link is definitely on the pricier side, but considering its state-of-the-art features may be worth the investment.whole house air purifier

Using a Wi-Fi-connected fan, the Dyson Pure Cool Link has a variety of sensors, a 360-degree HEPA filter, and a monitor for indoor air quality, which automatically removes pollutants from the household environment.

With its sleek design and high-tech method of air purification, the Dyson Pure Cool Link is a great choice for sophisticated consumers.


Removes up to 99.97 percent of allergens and pollutants that are as small as 0.3 microns.

It also has a fan for warmer months. It links to an app by Dyson to monitor the air it purifies.

This app will keep track of everything that goes on in the air around your home, or at least in the area where it sits.


The filter does not last very long. Sometimes, it only lasts for about seven months. This occurrence happens even when the fan runs on lower settings.

While the lightweight quality of this fan may appear to be a plus, there are concerns that it can easily be knocked over.

The plastic construction is rather fragile, which can be a problem when compounded with the previous concern.


Alen BreatheSmart

Best for larger spaces and rooms of up to 1100 sq ft, the Alen BreatheSmart boasts 4 HEPA filters and an equal number of fan speeds to fit your household needs.best air purifier 2018

Featuring automatic smart sensors that quickly adjust to changes in the household atmosphere, such as an increase in pet dander, seasonal changes, and indoor pollutants, the Alen BreatheSmart is understandably praised for its intuitive operating system.

While the design itself is fairly no-nonsense and on the larger side, you can select from a variety of colors and styles, which is a definite aesthetic plus.

It’s also best for large and open living rooms up to 1100 square feet.


This model comes in many colors, so it has a design that will fit almost any home’s décor.

They also have multiple different packages to choose from.

It claims to purify the air in a room in less than two hours.

It does not make much noise due to the WhisperMax technology it possesses. Lifetime warranty


There are concerns that it does not trap and purify larger particles, especially dust particles.

The filter does not seem to trap many things to the naked eye.

Noise develops over time when the device is switched over to lower speeds.


The GermGuardian 3-in-1

This cost-effective purifier is great for anyone budget that can’t really afford to spend hundreds of dollars.GermGuardian 3-in-1

Featuring ultra-quiet technology combined with 3-speed controls, this product captures 99.97% of dust particles, mold spores, and other allergens floating in the air.

Its odor-eliminating power makes it exceptional for households with smokers or particularly bothersome mildew and pet odors.

With its slender and lightweight build, the GermGuardian is easily portable, with a simple understated appeal that won’t overwhelm a room’s decor.

With pricing starting at under $100, the GermGuardian’s overall effectiveness is matched only by its competitive price tag.

*The Elite 4-in-1 might be a better option for you. See review below!


This model has a True HEPA filter that traps up to 99.97 percent of dust and allergens.

It also works with particles that are as small as 0.3 microns.

It possesses UV-C lighting and Titanium Dioxide to kill airborne bacteria, viruses, germs, and mold spores.

It can also reduce odors that come from smoking, cooking, and pets.


The filter has to be replaced every six to eight months.

This model also puts out fumes at first because of the Titanium Dioxide that can be rather noxious to people with asthma.

Limited warranty.



A long-trusted brand, the Honeywell 50250-S True HEPA captures up to 99.97% of household particles as small as 0.3 microns, with additional carbon activated filters trapping larger dust, lint, and animal fur debris.Honeywell air purifier

One notable benefit is that the long-life HEPA filter can be vacuumed to extend the filter life, meaning the average household will likely only have to replace the filter every 3-5 years.

Any guesswork in the interim is eliminated by the Intelli-Check electronic filter indicator that alerts you when it’s time to vacuum or replace the filter.

While certainly utilitarian in its appearance, the Honeywell’s overall build is pleasantly small and compact, making for lightweight portability throughout the house.

Where it lacks in the Dyson and Airocide’s ultra-modern design sensibilities, it more than makes up for in function and durability.


The filter will last for three to five years with an extended life.

Filters can be cleaned instead of simply replaced.

This model will tell you when to clean or change it based on its Intelli-Check electronics.


This model is noisy at higher settings.

The blue light on the sensor can be rather disturbing at night.

It emits a strong, saccharine, chemical odor at first that can be off-putting.


Whirlpool Whispure

Another dependable brand, the Whirlpool Whispure removes dust mites, pollen, smoke, and mold spores while operating at a whisper-soft volume.Whirlpool Whispure air purifier

It’s great for households with small children, babies, and noise-sensitive adults. The Whirlpool Whispure won’t make a sound while working overtime to keep your household free of harmful allergens.

Particles such as pet dander, ragweed, and other microscopic irritants are trapped and destroyed through the HEPA filter, improving overall air quality that could otherwise aggravate allergy and asthma symptoms.

The Whirlpool Whispure’s price range is comparable to that of the GermGuardian, adding it to the list for the effective budget-conscious consumer.


This model filters a room full of air 4.8 times per hour for a 500 square foot space.

It has easy-to-use electronic controls.

It has four fan speeds and sleep and turbo modes.


This model may shake at higher settings.

It is rather bulky.

This model might start to make loud noises after a few months of constant use.



Developed by Coway, the AIRMEGA is a Wi-Fi-equipped smart app-enabled product that allows you to control your AIRMEGA from any location via the convenient mobile app.best air purifier

Slightly bulkier than traditional ones, the AIRMEGA 300S model justifies its size by covering up to 1,256 square feet of indoor space.

Equipped with two pre-filters and two Max2 filters, with smart mode (auto, sleep, and eco) features and real-time air quality monitoring, the AIRMEGA 300S covers all bases from one easy-to-use app you can download from your Apple or Android device.

The AIRMEGA can operate with or without a Wi-Fi connection, and will not be interrupted should you lose connectivity.

Priced at around the same as the NASA Airocide, it’s evident that the more leading-edge the technology is, the higher the investment.


The 300S has several modes, including an auto-speed and economy mode.

The manufacturer claims it will cover up to 1,256 square feet.

It also has a timer for one hour, four hours, and eight hours.


The light on the front that indicates air quality can be rather disruptive at night.

The sensor sensitivity is not as sensitive as some reviews claim.

There are concerns that this model is pricier than other models that function better.


AeraMax 300

The AeraMax 300 is a good choice for individuals with health problems since it has an AeraSmart sensor that detects pollutants and automatically purifies the air.AeraMax 300 purifier

It’s certified by the Asthma and Allergy Foundation of America as effective even when it comes to capturing flu viruses, but it also successfully gets rid of 99.97% of other airborne 0.3 micron pollutants and allergens: germs, dust mites, mold spores, pollen, ragweed.

On top of that, it eliminates all kinds of smells, including cigarette smoke and even food odors, making it convenient for kitchens, too.

It works in large rooms: up to 600 sq. feet. Its HEPA (High-Efficiency Particulate Air) filters are replaceable, which are always better than washable ones. It has a special high performance operating mode for allergy and flu season. It is definitely worth its price (see on Amazon).


The ionizer can be turned off Eliminates all smells, including cigarette smoke.

Replaceable filters are cheap.

Monitors air quality; responds automatically.


Can be too loud for some users.

Blue display light can be too bright.


GermGuardian Elite 4-in-1

The GermGuardian Elite 4-in-1 tower contains a HEPA filter and captures more than 99% of 0.3-micron household pollutants and allergens, plus charcoal filters which are efficient at eliminating odors.GermGuardian Elite 4-in-1

It is suitable for medium and large rooms of about 200 sq. feet, has 5 different settings which also include an ultra-quiet sleep mode. Thus, it is both efficient and customizable.

It kills airborne bacteria, viruses, germs, and mold spores by using its UV-C light technology-based system. Filters are replaceable, and the device automatically lets the user know when a filter change is required.


5 speeds, ultra-quiet sleep mode.


UV-C light killing germs.



Expensive replaceable filters.

Too loud for bedrooms.

Takes up a lot of space – must be removed from the wall for proper airflow.


Blue Pure 121

The Blue Pure 121 is specifically designed for large and extra-large rooms between 600 and 700 square feet. As such, apart from large living rooms, it is also convenient for dorms, expansive offices, college rooms, and other public premises.Blue Pure 121

With its three-phase filtration, it attacks and captures 99% of all pollutants, including dust, pet dander, smoke, and pollen, and also removes the common household odors caused by smoking, pets, or cooking thanks to its carbon filter.

It is praised for its low sound output, so with all of its 3 fan speeds, it is suitable for bedrooms and similar when quiet operation is essential.

Thanks to its polypropylene filter media, it processes more at low fan speeds, which results in less noise, and simultaneously contributes to its being 60% more energy-efficient, which is not negligible when taking into account its high price tag.

Its air cleaning system is also ozone reducing, which may be important for individuals with lung conditions or generally for those with breathing problems.


Energy-efficient and very quiet.

More airflow at low fan speeds.


Replacement filters are expensive.


Coway Mighty

Although compact in design, the Conway Mighty is pollutant elimination efficient with its 4-stage filtration (pre-filter + carbon (odor) filter + HEPA filter + ionizer).Coway Mighty Air Purifier

It contains an air-quality indicator that uses particle sensing technology to not just monitor but also respond to changes with a vivid color indicator.

It automatically turns on when needed, and also turns off after 30 minutes if it doesn’t detect any pollutants, thus making it very energy efficient.

It has a filter change indicator and declared noise level at 24.4 – 53-8 dBA. It is certified to have low ozone emissions, making it suitable for individuals with breathing problems and lung conditions.


Automatic particle sensing control.

Air-quality indicator.

4-stage filtration system.

Very quiet even on the highest speed.


One customer noted an increase in room temperature.

Customers have noted that replacement filters are not regularly in-stock.


Why Do I Need One?

Purifiers eliminate unhealthy and potentially hazardous contaminants in the air, such as dust, pollen, mold, and pet dander, not only making it easier to breathe but enjoy an overall improvement in health and well-being.

Those who suffer from respiratory allergies or occupy older homes can especially benefit from investing in one, as discomfort and the risk of illness will significantly decrease with routine use.

A common misconception about these is their cost, which many assume to be too high.

In fact, there are several moderately priced options of makes, models, and capacities available today, that are well worth the price tag in terms of exceptional health benefits.


How Do Air Purifiers Work

They work by drawing air through a filter or a series of filters to capture allergens and harmful pollutants. As the air flows through the filter particles become trapped, and the more times the air passes through the filter the cleaner the air becomes.


Types Of Air Filters

HEPA Air Filters

Capable of capturing particles of 0.3 microns at an efficiency level equal to or greater than 85%.

True HEPA Air Filters

Same as HEPA, but with more rigorous standards. Can capture microns equal or greater to 99.97%.

Ionic Filters

Uses electrostatic precipitators that have both positive and negative charged plates. Particles collect on the plates as air passes through them.

Charcoal and Active Carbon Filter

Great for removing odor, but not so much for allergens and pollutants. These are typically used as a pre-filter to HEPA or True HEPA.


Things To Consider Before Buying

Among a multitude of offered air-purifying products, it can be hard to pick the best air cleaner.

First, like with making any purchasing decision, one has to look into one’s personal particular needs and problems that need to be addressed, how much money they are willing to spend, the space that requires purifying energy consumption, and others.

Room Size

Some are designed for specific room sizes. Small, medium, large, and extra-large.


Pollen, mold, pet dander, dust mite, pollutants, and tobacco smoke particles.


Does the filter require cleaning or replacing? Some filters last between 3 – 6 months depending on how dirty the air is.

Air Filter Type

Look for HEPA or True HEPA filters.

Features / Specs

Fan speed, app connectivity, UV-C sanitizers, etc…

We hope you found this review helpful, and if you have any questions please leave them in the comment section below.

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