The best air purifiers can keep your indoor air clean and allergen-free — here are the top appliances we've tested.
The best air purifiers are great pieces of home tech that can help to keep your home free of pollutants and irritants. If you suffer from respiratory conditions like asthma or are prone to allergies, a good air purifier can make all the difference to your comfort levels at home. With the Black Friday sales now up and running, you can find one of the best air purifiers for less, with great deals available across a huge range of retailers.
So which air purifier is best for your home? At Live Science, we’ve put the best air purifiers to the test to come up with our recommendations. Read on for our round-up of the best appliances you can buy — or skip to our FAQ section, to read through advice from doctors and the EPA on the benefits of air purifiers and how they can help keep your indoor air clean .
Dr. Ross PerryDr Ross Perry qualified at Guy’s & St Thomas’ Hospital Medical School in 1994. He is now the medical director of Cosmedics Skin Clinics. For this piece, he offers advice on potential pollutants in the home and the efficacy of air purifiers. The air purifier is light and features indented handles at either side, making it easy to move from room-to-room.
What the users sayThe Coway AP 1512 HH Air Purifier has an impressive 4.7 star rating out of five on Amazon, and with reviewers praising its quiet running, affordable replacement filters and its economical performance, it’s fair to say that this is a total winner with users. Negative reviews said that the included instructions did not quite go far enough in instructing users how to set up and use their air purifier.
We particularly liked the Eco mode on the Coway AP-512HH which worked well to power down the air purifier when air pollution was low, saving energy and money. Our tester also found the auto mode worked well to toggle between fan settings depending on indoor air quality. The purifier also doubles up as a fan in hotter weather, although this isn’t as powerful as some users would like. Users can activate, schedule and monitor their purifier via the Dyson app, allowing them to set fan speed, timers and check air quality whether they’re home or away.
The Dyson Purifier Cool’s high price tag may be too expensive to suit everyone’s budget, but its stylish, sleek design and smart, connected functionality is impressive. We burned a series of matches to test how well the purifier absorbed particles. At a level 2 setting, we found that the purifier absorbed 99.7% of particles smaller than 0.3 microns, 99.5% of particles smaller than 2.5 microns, and 100% of particles measuring smaller than 10 microns. At a level 3 setting, we found that the purifier absorbed 99.9% of particles smaller than 0.3 microns, 99.6% of particles smaller than 2.
What the users sayThe Levoit H132 scores an impressive 4.7 out of five stars on Home Depot. Negative reviews are few and far between, with one customer finding problems with the motor whining after a few weeks. Most reviews are positive, with users praising the purifier as convenient and highly efficient at reducing the symptoms of allergies. Customers particularly like how quiet the purifier runs, even at the highest setting.
The Levoit H132 may not have all the bells and whistles of a smart air purifier, but its affordability and compact size makes it the ideal entry-level indoor air purifier that performs well in small to medium-sized rooms. Our at-home incense smoke test evaluated how well the purifier performed after burning five incense cones simultaneously and found mixed results. While the KOIOS EPI810 absorbed an impressive 99% of particles measuring 10 microns, it only absorbed 52% of particles smaller than 2.5 microns
HoMedics TotalClean Deluxe 5-in-1 is a tower air purifier equipped with UV-C technology and a 360-degree true HEPA filter. According to the manufacturer’s claims, this piece of equipment can remove up to 99.9% of harmful microbes, mold, fungi and airborne allergens. And thanks to its pre-filter and additional carbon filter, it can also be effective at getting rid of lingering odors, pet hair and volatile organic compounds — all for less than $250 per unit.
We start by running an ambient air quality test, where we run the air purifier in multiple rooms in a home to see how it performs at the regular setting, and the highest possible setting . We make note of readings after 15 and 30 minutes to see the speed at which the machine removes particles from the air. We also measure the noise levels generated by the fan, to comment on how noticeable the purifier will be in an average home.
If you have health concerns, or a recurring allergy, keeping pollutants out of your home with an air purifier is definitely worthwhile. Americans now spend roughly 90% of their time indoors, according to the Environmental Protection Agency . It's here that potentially harmful air is able to build up, meaning there are up to five times higher levels of pollutants indoors, than outdoors.
Jones added that HEPA filters can be particularly useful for those suffering from allergies or asthma. “Multiple studies with portable air cleaners that use a HEPA filter have found improvements in one or more allergy and/or asthma symptoms,” she said. What causes indoor pollution?"High temperatures and humidity can increase concentrations of some pollutants and be detrimental to health," Dr. Ross Perry, Medical Director of Cosmedics skin clinics, told Live Science.
What are HEPA filters?You’ll notice most of the air purifiers for rooms that we tested have something called a high-efficiency particulate absorbing filter. These can remove 99.97 percent of air pollutants from 0.3 microns in size, which basically means they are really effective at getting rid of the majority of indoor air pollutants.
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