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Best Air Purifiers Reviews – Top 10 Hottest List for Jan 2021


Since you are reading this article, we can safely assume that you are looking for the best air purifier money can buy. Well, good news! You have come to the right place. If you live in a metropolitan city where the air pollution level has already reached the alarming mark, investing in an air purifier is the need of the hour. With so many varieties, size options and abundance of technical details, it could be challenging for a general customer to find the right product.

That’s where we come into the picture. Our core team did extensive research and had hands-on experience with over a dozen of products over the course of 3 months. We finally narrowed down to 10 products which performed exceedingly well in our carefully monitored tests conducted in a spacious NYC apartment.

Best Air Purifiers Comparison:

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Product Name »

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Weight »


Levoit LV-PUR131 Air Purifier

(Best of the Best)


15.8 pounds

GermGuardian-AC4825 3-in-1 Air Purifier


10.8 pounds

Coway AP-1512HH Mighty Air Purifier


12.3 pounds

Enerzen Commercial Ozone Generator


5 pounds

GermGuardian AC5350B Elite 4-in-1 Air Purifier


11 pounds

LEVOIT Air Purifier Filtration with True HEPA Filter


6.6 pounds

Winix 5300-2 Air Purifier


18 pounds

Dyson Pure Cool Link WiFi-Enabled Air Purifier


7.9 pounds

Oransi Max HEPA Large Room Air Purifier


19 pounds

Honeywell 50250-S True HEPA Air Purifier


21.9 pounds

Top 10 Best Air Purifiers of 2021

Best Air Purifiers over dozens of competitive models from different brands listed below:

1. LEVOIT LV-PUR131 Air Purifier with True HEPA Filter(Highly-rated, Well-priced product/Best of the Best)

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Be it clean air performance output, noise output, ease of operation or overall value for money- the Levoit LV-PUR131 scored consistently well in every department, which is why it is at the top of this list. It boasts of a CADR (Clean Air Delivery Rate) of 135+ which roughly means that the unit can cover rooms up to 200 sq.ft. (Since we are on the point, the CADR rating should always be around 2/3rd of the room you’d be using the purifier in).

While this sounds brilliant for bedrooms, it might not be sufficient for medium-size living rooms. The unit comes with a HEPA filter along with spacious micro-pleated surfaces that can capture pollens, dust, smoke and various airborne bacteria that cause allergy. If you or any of your family members have a pollen allergy, this could be a great device for indoor air treatment.

The true HEPA model took an hour to reduce about 99.47% airborne particles. While there are few up-to-date models taking a shorter time to reach the same threshold, it is the best of its kind given its humble price tag. Also, it is one of the most silent models we have come across.

The only thing you can hear is white noise. It also features carbon filters and many other filtration stages to remove smoke, gaseous contaminants and other types of odors from the air. We also loved the seamless controls and Auto Switch function that automatically adjusts the settings based on the current environment. Apart from 3 fan speed, it also has a Sleep mode that facilitates a very quiet operation. Last but not the least, it also has a rail attached to it which makes it easy to relocate.

What We Liked

  • True HEPA filter.
  • Removes 99.47% airborne particles under an hour.
  • Carbon filters to cancel out gaseous contaminants and odors.
  • Noise-free operation.
  • Easy to move from place to place.

What We Didn’t Like

•    Not suitable for spacious living rooms.

2. GermGuardian-AC4825 3-in-1 Air Purifier (Another Top Pick)

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This model has a CADR rating of 100+ which makes it a strong suit for rooms measuring up to 150 sq.ft. This moderately priced unit comes with True HEPA filter that is also one of its biggest strengths. The filter has the ability of 99.97% airborne particles under the one hour mark. Apart from the HEPA filter mechanism, it also employs UV-C light that activates Titanium Dioxide that helps to remove pet odors and gas emitted from harmful chemicals.

The UV light demolishes pathogenic bacteria, virus, mold, pollen, smoke and other contaminants that usually cause allergies, skin, and respiratory ailments. Without the use of the highly debated ozone gas, its powerful carbon filters further banishes smoke and other types of annoying odors and chemical vapors that lead to stuffy rooms.

Thanks to the addition of pre-filter, the HEPA filter which is the next layer of it, is able to remove particles as tiny as .3 microns. The controls are fairly easy and while the removable filters might add to the air purifying cost, you can opt for affordable charcoal filters to save some of the cost.

What We Liked

  • HEPA filters can remove airborne particles as small as .3 microns.
  • Pre-filters that capture the large particles.
  • Carbon filters that reduce smoke and odor.
  • UV-C light kills virus and harmful bacteria.
  • Easy controls.

What We Didn’t Like

  • Not one of the quietest air purifiers in this list.

3. Coway AP-1512HH Mighty Air Purifier – (Runners-Up)

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The air purification system of combines a few stages of filtration process and does the job better than all of its competitors in its price range. The unit is rated for 350 sq.ft and under just 20 minutes, the airborne particles reduced up to 85% in our New York apartment living room which measured over 600 sq.ft.

The machine has smart air sensors or as they call it, air quality indicator that helps you figure out the amount of air pollutants remaining in the indoor environment. With its HEPA filtration method, the air purifier can remove 99.97% contaminants with accuracy in just a little over half an hour.

From pet odor, pet dander, smoke, gaseous chemicals, mold, mildew, pollen to dust-the superior filtration system clears the indoor air of every possible pollutant before it reaches your respiratory system. Another inviting feature of this unit is the energy-saving mode. After 30 minutes, if the air quality sensor detects no pollutant left in the air, the unit shuts itself off, automatically.

What We Liked

  • 85% airborne particles reduction under 20 minutes in large living rooms.
  • HEPA filter.
  • Removes various types of gaseous contaminants and foul odor.
  • Energy-saving option.
  • The filter can last for over two years.
  • Air quality indicator.

What We Didn’t Like

  • Might heat the room. However, the issue is product-specific.

4. Enerzen Commercial Ozone Generator – (Editor’s Choice)

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The next model on our list is a serious restoration tool used for banishing bad odor, smoke and other toxic fumes from indoors via oxidization method. Sometimes, room sprays and deodorants aren’t effective enough to break down the odor-filled molecules floating in the air. That’s when an ozone generator like this comes into the picture.

It neutralizes the odor-causing molecules, leaving the air refresh and purified for breathing. The oxidization process releases a limited amount of ozone into the air which acts as a deodorizing agent. Apart from the foul smell, the Enerzen Commercial Ozone Generator also diminishes harmful bacteria, virus, dust mites and effectively removes mold.

Another feature we liked a lot is its low-cost maintenance. Since there’s no hassle of replacing filters, you can cut some serious cost on your yearly air treatment bill.

What We Liked

  • 6000 mg capacity is suitable for medium-size rooms.
  •  Removes foul smell, toxic fumes and smoke from the air
  • Highly powerful mold removal mechanism.
  • Kills pathogenic virus and bacteria.
  • Portable.

What We Didn’t Like

  • The room might smell like chlorine if you keep the device on for too long.

5. GermGuardian AC5350B Elite 4-in-1 Air Purifier – (Budget Pick)

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If you are suffering from asthma or severe dust allergy, you need an air purification system as powerful as this one. Before digging deeper, let’s give you a brief overview of the 4 in 1 filtration mojo this unit boasts of. It is actually three-stage filtration, where the carbon filter and pre-filter are actually merged into one. However, that doesn’t affect the effectiveness of the unit in any way.

While its True HEPA filter effectively captures pet danders, pollens and airborne particles smaller than 0.3 microns, it’s UV-Cdestroys harmful virus, bacteria, and bad odor. With a CADR rating of 125+, it can efficiently improve the air quality of bedrooms and offices measuring around 140 sq.ft. Unfortunately, like the previous model, this one also suffers from the lack of an air quality sensor.

What We Liked

  •  HEPA filter that reduces airborne particles up to 99.97%.
  •  Carbon filter removes bad odor.
  • UV-C technology kills germs and pathogenic bacteria.
  • Tower design makes it a snug fit in small rooms.
  • Seamless adjustments.

What We Didn’t Like

  •  The absence of air quality indicator.

6. LEVOIT Air Purifier Filtration with True HEPA Filter – (Best Overall)

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​​​​If you want to revitalize the air inside your room and office and block harmful airborne particles up to 99.97%, LEVOIT Air Purifier Filtration with True HEPA Filter is one of the best choices you have. Its 3-stage filtration system neutralizes odor-causing molecules, thus removing unwanted smell and chemical fumes.

Its patented HEPA technology is engineered to capture allergens in rooms measuring up to 300 sq.ft, making it a strong fit for spacious bedrooms as well as living rooms. Add to this, the activated carbon filters fitted inside the unit blocks bigger dust particles, pet fur, mold etc. apart from removing gaseous chemicals and stench.

It is a non-ionic air purifier. Therefore, it ensures no positively charged ion floats in your room. We also loved the soft nightlight function and whisper- quiet operation facilitated by the machine.

What We Liked

  •  HEPA filter removes allergens.
  • Activated carbon filter removes big particles and odor.
  • 3-stage filtration system that ensures clean air.
  • Easy settings.
  • Suitable for rooms up to 300 sq.ft.

What We Didn’t Like

  • Might take a little while to set up properly.

7. Winix 5300-2 Air Purifier – (Editor’s Choice)

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The Winix 5300-2 Air Purifier is one of the best air purifiers in its price range for a lot of valid reasons. Rated for 360 sq.ft, we tested this model in our 700 sq.ft NYC apartment and the unit facilitated 80% reduction in airborne particles in just around 40 minutes. Its unique PlasmaWave technology demolishes pathogenic bacteria, virus, and mold without the risk of Ozone emission.

The permanent pre-filter effectively captures large particles of dust, pet fur, hair, and pollen. The activated carbon filter does an excellent job of eliminating the foul odor, kitchen smoke and chemical vapors that result in stuffy rooms. The only complaint we have is that the filter requires replacement in every 3 months which will significantly add to your budget.

What We Liked

  •  Pre-filter eliminates pet dander and other bigger airborne particles.
  • True HEPA filter.
  • Activated carbon filter removes odor.
  • Well-suited for large rooms.
  • Easy setup.

What We Didn’t Like

  • The filter needs replacement in every 3 months.

8. Dyson Pure Cool Link WiFi-Enabled Air Purifier – (Best Overall, Runners-Up)

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The out-of-the-box bladeless fan design of this air purifier is the first thing that caught our notice. The unit can be controlled and monitored using your iOS or Android device via Dyson’s Link App. It employs Pure Cool Link mechanism that forces indoor air through a fine mesh filter and releases purified air through its air multiplier fan.

Its glass HEPA filter manages to block airborne contaminants up to 99.95 %. Anything sizing up to 0.1 microns is efficiently captured by the filter. Apart from the Dyson’s Link App, you can control the timer and speed of the fan etc. using an infrared remote control.

What We Liked

  •  HEPA filter removes up to 99.95% pollutants.
  • Wi-Fi enabled.
  • Infrared remote control.
  • Bladeless fan design.
  • Space-saving design.

What We Didn’t Like

  • Makes noise at high settings.

9. Oransi Max HEPA Large Room Air Purifier – (Hot Selling Product)

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In order to optimize the air quality of large living rooms, king-size bedrooms and office rooms, you need a powerful device like Oransi Max with HEPA filter. There are several types of allergens floating in the air. Instead of focusing on a specific type of allergen, the HEPA filter blocks all the types, ensuring the air that reaches your nostrils is fresh and healthy.

The pre-filter placed right above the HEPA filter captures the large dust particles and pet dander’s, leaving only the finer particles for the next stage of filtration. It also features an air quality monitor which relieves you from the hassle of manually tweaking the fan speed settings in order to maintain the air quality inside the room.

What We Liked

  • The HEPA filter blocks all types of allergens.
  • Pre-filter captures pet dander, mold and pollen.
  • Air quality indicator.
  • Easy setup.
  • Suitable for large rooms.

What We Didn’t Like

  • The air cleaning performance isn’t on par with our top picks.

10. Honeywell 50250-S True HEPA Air Purifier – (Best Overall)

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Overall particle reduction depends on many factors including the amount of air processed, the pollutant type and the pollutant introduction rate into the environment. This most effective for large to extra large rooms. The True HEPA filter is capable of sucking in pollutants as tiny as 0.3 microns, smoke, and foul odor. Its pre-filter captures the large particles before the finer particles reach the next filtration stage.

However, it might not be as efficient as our top two picks when it comes to removing pollens or mold. We found it to be mainly engineered to filter pet fur, dust, lint and smoke particles from the indoor air. Although it is designed for large rooms, it is exceptionally easy to move from one room to another.

Another key feature of this unit is three air-cleaning levels that let you control the air circulation via the air purifier. In an otherwise technically sound gadget, the absence of an air quality indicator is a bit of a letdown. The inclusion of a filter monitor, however, mitigates the flaw to some extent. This significant feature lets you know when to change the filter, helping you keep your machine functioning optimally. To ensure stated product performance, use only certified Honeywell replacement filters

What We Liked

  • Suitable for  large to extra large rooms.
  • Easy to relocate.
  •  Pre-filters.
  • Highly effective dust and smoke filters.
  • Filter monitor.
  • 3 air cleaning levels

What We Didn’t Like

  • No air quality sensor.

Final Verdict

Finding the best air purifier isn’t just about reading reviews and knowing the advantages. That’s why we have also pointed out the noteworthy disadvantages of each product as well to help you make an informed decision. We all deserve to breathe fresh and purified air but those of us who live in the city have almost forgotten what purified air feels like. Therefore, it is very important that you consider all the essential parameters such as size, design, and overall performance before taking the plunge.

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