The 9 Best Air Purifiers of 2019

Shop for the best air purifiers to improve the air quality in your home

Our editors independently research, test, and recommend the best products; you can learn more about our review process here. We may receive commissions on purchases made from our chosen links.

Research has shown indoor air quality is often significantly worse than that outside, which is why it's no surprise that air purifiers are such a popular purchase among homeowners. These devices work to remove microscopic particles from the air, saving potentially harmful molecules like dust, mold, smoke and more from entering your lungs.

If you're looking for an air purifier to help improve the air quality in your home, the following are some of the best options available today, all of which will help you breathe a little easier.

  • 01 of 09

    Best Overall: Coway AP-1512HH Mighty Air Purifier

    Coway AP-1512HH Mighty Air Purifier with True HEPA and Eco Mode
    Courtesy of Amazon.com.
    Excellent

    Another incredibly efficient, effective air purifier is the Coway AP-1512HH Mighty Air Purifier. In addition to removing contaminants from the air, this machine has several additional features that make it a worthwhile purchase.

    Using a four-stage filtration system, this Coway purifier removes 99.9% of contaminants from the air, as well as many odors. It can be used in rooms up to 361 square feet, and it features a pollution sensor that provides real-time updates on your air quality. Additionally, this air purifier comes with an eco-friendly mode, where it automatically shuts off once no pollution is detected.

    Reviewers say the Coway Mighty Air Purifier is durable and effective, doing an especially great job eliminating odors from the air.

  • 02 of 09

    Runner-Up, Best Overall: Honeywell HPA 300 True HEPA Allergen Remover

    Honeywell True HEPA Allergen Remover, 465 sq. Ft, HPA300
    Courtesy of Amazon.com.
    Very Good

    One of the most efficient, highly-rated air purifiers available right now is the Honeywell True HEPA Allergen Remover. This device helps remove more than 99.97% of airborne particles from large rooms, effectively improving indoor air quality.

    This top-rated air purifier from Honeywell is effective on particles as small as .3 microns, and it will capture things like pollen, dust, mold, pet dander, smoke, and germs. It's effective in rooms up to 465 square feet, and it can circulate all the air in a given area up to five times an hour. Not to mention, reviewers love this HEPA air purifier, which they say comes at a great price and helps reduce allergies and sickness among their family.

  • 03 of 09

    Best for Pets: LEVOIT LV-H132 Air Purifier with True HEPA Filter

    Very Good

    If someone in your home has allergies, it may irritate them to have pet dander floating around in the air. A great product to capture pet dander and other irritating particles is the LEVOIT LV-H132 Air Purifier.

    This model has a three-stage filtration system, including a true HEPA filter, that removes 99.9% of dust, pollen, smoke, mold spores, and pet danders. It can filter out particles as small as .3 microns, and it can be used in rooms as big as 85 square feet. There are more than 1,500 glowing reviews for the LEVOIT Air Purifier, and many buyers say it’s amazing at reducing airborne irritants, as well as pet dander and odors.

  • 04 of 09

    Best Budget: GermGuardian AC4825

    GermGuardian AC4825 3-in-1 Air Cleaning System with True HEPA Filter, UV-C Sanitizer, Allergen and Odor Reduction, 22-Inch Air Purifier
    Courtesy of Amazon.com.
    Excellent

    High-end air purifiers can cost up to several hundred dollars, but you don't need to break the bank to get a quality product. One great budget option is the GermGuardian AC4825 22” 3-in-1 Full Room Air Purifier, which delivers the same air-purifying power for a fraction of the price.

    This model uses a HEPA filter to capture 99.9% of allergens, including pet dander, mold spores, and pollen. It also uses a charcoal filter to reduce common odors from pets, smoking, cooking and more, and it boasts optional UV-C light technology that can kill airborne bacteria and germs. Not to mention, there are more than 5,500 5-star reviews for this air purifier, many of which call the product life changing. One reviewer even noted that she hasn't gotten sick since she purchased her GermGuardian three years ago.

    Continue to 5 of 9 below.
  • 05 of 09

    Best for Allergies: LG Electronics PuriCare 3-Stage Filter Air Purifier

    If someone in your family suffers from allergies, you need a product such as the LG Electronics PuriCare 3-Stage Filter Air Purifier. This product has a sleek, modern design, and it's incredibly efficient at removing small particles from the air, helping to reduce allergy symptoms.

    This air purifier uses a three-stage filter system to capture 99.9% of allergens as small as .3 microns. It will effectively cleanse the air of particles such as dust, pet dander, mold, and pollen—all of which can cause your allergies to act up. Additionally, it includes an LED light system that visually indicates air pollution levels, as well as a digital display for real-time measurements of indoor particulates. Reviewers say this air purifier makes a noticeable difference in their homes, helping to relieve allergy symptoms while operating silently.

  • 06 of 09

    Best for Mold: GermGuardian AC5000 28” 3-in-1 Large Room Air Purifier

    While microscopic, mold particles can be harmful to your health if you breathe them in over a prolonged period of time. If you're concerned about mold in your home, you should invest in an air purifier such as this model from GermGuardian.

    This product uses a HEPA filter to capture 99.9% of dust and allergens as small as .3 microns, and it also uses UV-C light technology to reduce airborne bacteria, germs, and mold spores. It's effective in rooms up to 180 square feet, as it can circulate the air up to four times per hour.

    According to reviewers, the GermGuardian Large Room Air Purifier works great, noticeably clearing dust and other particles out of the air. However, several note this product is louder than other “silent” models.

  • 07 of 09

    Best for Smoke: Pure Enrichment PureZone 3-in-1 True HEPA Air Purifier

    If you live in an area where there are frequently wildfires or have someone in your home that smokes, you know how permeating the odor can be. However, you can combat the smell of smoke with a product like the Pure Enrichment PureZone 3-in-1 True HEPA Air Purifier.

    This air purifier has a true HEPA filter that removes 99.9% of fine particles from the air, including pollen, pet dander, mold spores, and smoke. Further, it uses UV-C light to destroy microorganisms like viruses, bacteria, and fungi. It can be used in areas up to 200 square feet, and it boasts a whisper-quiet operation that you won't even notice.

    Many reviewers rave about this air purifier for the purpose of combating wildfire and other smoke. Many note it's incredibly effective at removing the odor from the air, but you may have to change the filter more frequently than recommended for best results.

  • 08 of 09

    Best for Bedrooms: Rabbit Air BioGS 2.0 Ultra Quiet HEPA Air Purifier

    Rabbit Air BioGS 2.0 Ultra Quiet HEPA Air Purifier

    Courtesy of Amazon

    If you're going to put an air purifier in your bedroom, you probably want it to be quiet enough that it won't disturb you while you sleep. If this is the case, you should definitely look into the Rabbit Air BioGS 2.0 Ultra Quiet HEPA Air Purifier, which is virtually silent during operation.

    This air purifier has a four-stage purification and deodorization system that includes HEPA filtration. It can be used in a room up to a whopping 550 square feet, and it traps particles as small as .3 microns with a 99.9% efficiency. The Rabbit Air purifier is great for reducing the buildup of common allergens such as dust mites, mold, pollen and pet dander, as well as bacteria and viruses, making it a solid investment for any bedroom.

    Reviewers say this unit looks sleek and modern, and it delivers “unbelievable” results, freshening up rooms and removing unpleasant odors, to boot.

    Continue to 9 of 9 below.
  • 09 of 09

    Best Design: Dyson Pure Cool Purifying Tower Fan, TP04 Air Purifier

    Dyson Pure Cool Purifying Tower Fan, TP04 Air Purifier

    Courtesy of Home Depot

    If you aren’t afraid to spend a little extra on a high-end product, you can't beat the design and performance of the Dyson Pure Cool Purifying Tower Fan. This highly-rated product has impressive dual functionality, working as both an air purifier and a fan in rooms up to 400 square feet.

    This product from Dyson uses a HEPA filter to capture 99% of microscopic particles, as small as .3 microns, but it does more than that. It also features a real-time display that shows you air quality levels, and it has a powerful fan that includes both forward and backward airflow modes and can oscillate 350 degrees. Additionally, this air purifier includes smart technology, so it links up to the Dyson app and can be controlled via Amazon Alexa.

    Reviewers give this product top marks across the board, writing that it's easy to use and control, and it works incredibly efficiently, even in larger rooms.

Products Tested by

How We Tested

We bought four top-rated air purifiers and our reviewers tested them for over 1,050 hours. We asked our testers to consider the most important features when using these air purifiers, from their filter type to their footprint. We've outlined what matters most here so that you, too, know what to look for when shopping.

What to Look for in an Air Purifier

Size A larger room requires a higher-capacity air purifier. This is measured by clean air delivery rate, or CADR, which indicates how many particles are filtered and how fast. For the most effective air purifier, choose one that has a CADR rating that’s at least two-thirds the size of the room. (A 100-square-foot room would have a CADR rating of at least 67.)

Efficiency Air purifiers clean a room’s air at different intervals over the course of one hour. This is called air change per hour, or ACH rate (which varies from 2-6). An ACH rate of 2 means the air will be cleaned every 30 minutes, an ACH rate of 4 means the air will be cleaned every 15 minutes, and an ACH rate of 6 means the air will be cleaned every 10 minutes.

Filter type There are three main types of filters: HEPA filters, charcoal or active carbon filters, and washable filters. HEPA filters are most effective at reducing common allergens (pet dander, pollen, and dust), but charcoal or active carbon filters remove irritants like smoke or cooking smells more effectively. Washable filters are more cost efficient and environmentally friendly since the entire filter does not need to be replaced.

Test Results: Coway AP-1512HH Mighty Air Purifier (Best Overall)

Excellent

What We Like

  • Useful air quality indicator light

  • Quiet on lower settings

  • Convenient eco and auto settings

What We Don't Like

  • Instruction manual needs more info

  • Loud on highest setting

Coway AP-1512HH Mighty Air Purifier
The Spruce 
Coway AP-1512HH Mighty Air Purifier
 The Spruce
Coway AP-1512HH Mighty Air Purifier
 The Spruce

“The combination of features and effective air purification makes it a good buy,” our tester revealed of this air purifier. Our reviewer particularly liked the air quality indicator light, the energy-saving shut-off feature, and the auto setting. “The machine can self-detect changes in air quality and increase filtration speed,” she explained. On the other hand, she didn’t like how loud the highest setting gets. Our tester also commented, “While the purifier includes instructions on how to use each feature, it doesn’t explain what they do or why they’re needed.” However, she gave it high marks for effectiveness: “After only a few hours, the rooms in which the unit was tested smelled fresher, even with a shedding dog.”

Test Results: Honeywell True HEPA Allergen Remover HPA 300 (Runner-Up, Best Overall)

Very Good

What We Like

  • Effective in large rooms

  • Specific setting for allergies

  • HEPA filters only need to be changed yearly

What We Don't Like

  • Large and heavy

  • Quite loud

Honeywell HPA 300 True HEPA Allergen Remover
 The Spruce
Honeywell HPA 300 True HEPA Allergen Remover
The Spruce 
Honeywell HPA 300 True HEPA Allergen Remover
The Spruce 

Our tester recommended this air purifier for its effective filtration, capacity for large rooms, and unique settings. “Unlike with other purifiers, this unit offers settings not in terms of quietest to loudest, but instead, by what purpose they serve,” our reviewer reported. “There's a recommended everyday setting, as well as extra settings specific to allergies or viral particles.” The negatives? Our tester found this much louder than other models, especially on its turbo setting, and also didn’t like its bulkiness. The takeaway? “This purifier is worth buying for users who need a very large space filtered and aren't concerned with appearance or sound,” our reviewer explained.

Test Results: LEVOIT LV-H132 Air Purifier with True Hepa Filter (Best for Pets)

Very Good

What We Like

  • Super effective

  • Reasonable price

  • Aesthetically pleasing design

What We Don't Like

  • Lacks advanced features

  • Doesn’t cover large rooms

LEVOIT LV-H132 Air Purifier with True HEPA Filter
 The Spruce
LEVOIT LV-H132 Air Purifier with True HEPA Filter
The Spruce 
LEVOIT LV-H132 Air Purifier with True HEPA Filter
The Spruce
LEVOIT LV-H132 Air Purifier with True HEPA Filter
The Spruce

Our tester loved this air purifier for its compact, aesthetically appealing design, the reasonable price point, and its effectiveness, particularly with pet dander. “We noticed a change in air quality after going from running it to not running it, and one user in the household who usually experiences nosebleeds in the spring didn’t have any,” our reviewer raved. On the flip side, there are few advanced features—like an auto shut-off or timer—and it’s designed for smaller rooms. Overall? “This product is absolutely worth buying for price-conscious buyers with small rooms,” our tester said.

Test Results: GermGuardian AC4825 (Best Budget)

Excellent

What We Like

  • Lightweight

  • Quiet

  • Effective

What We Don't Like

  • No fan

GermGuardian AC4825
GermGuardian
GermGuardian AC4825 air purifier
GermGuardian AC4825 purifier
GermGuardian purifier

The GermGuardian AC4825 came highly recommended by our testers as an easy-to-use, cost-effective air purifier. One of our reviewers said, “My husband has allergies and this product has really helped with that.” Our testers also liked that it was lightweight, portable, and quiet enough to run while sleeping. One of our reviewers wished it had “dual functionality as a fan,” but didn’t consider that a dealbreaker. “For its price, it is very effective in purifying and humidifying the air,” one of our testers concluded.