“Indoor air quality can be two to five times more polluted than outdoor air quality,” says Dr. McKeon. “Outdoor air quality is an issue. But the air inside, where we spend most of our time, has a number of pollutants added to it.”
While we introduce allergens like pollen and animal hair to our homes, our indoor environment also creates allergens, says Dr. McKeon. Dust mites build up naturally and thrive off of dead skin. Particles are released into the air whenever there’s a furnace, wood-burning fire, or candle. Cooking releases oil and fat particulates into the air. “The particles of concern are the ones you can’t see,” says Jake Read, advanced design engineer at Dyson.
The specifics of your home environment also impact air quality, explains Dr. McKeon. Since newer, more energy efficient homes don’t have the same gaps and cracks as older homes, there’s less air circulation, he says. Humidity can lead to higher dust levels. Newly installed floors and furniture can release chemicals into the air.
Now, all of this isn’t meant to freak you out—when it comes to indoor air quality and health, Dr. McKeon says an allergen is really only an issue if it bothers you.
“It would be wrong to spread a message that everybody needs to have an air purifier. Many people benefit by having a device to clean the air, but people may may live in an indoor environment that’s got good air quality already and it’s well ventilated,” says Dr. McKeon. “If you’ve got a good indoor air quality and you are not suffering symptoms, and you’re somebody who’s not bothered by some of those indoor allergens anyway, then it’s probably not required.”
If you know your triggers, it’s also possible to reduce the amount of allergens in your indoor air by doing things like vacuuming more, getting rid of pests, and installing a humidifier or dehumidifier, depending on your space’s needs. But whether or not you’re bothered by indoor allergens, Dr. McKeon says some people just like the assurance of having an air purifier to know they’re breathing clean air.
Keep in mind that the air purification system you choose is only as good as the way you use it. “You’ve got to run that thing 24/7,” says indoor air quality expertVinny Lobdell, global president of HealthWay . When purchasing an air purifier, Dr. McKeon says it’s important to look for one that’s validated by a third-party testing organization to ensure it’s effectively removing and trapping allergens.
Shop validated air purifiers at three different price points, below.
The best air purifiers to improve indoor air quality and your health
1. Blueair Blue Pure 411, $120
Blueair’s most compact air purifier is suitable for spaces that are 161 square feet or smaller. It silently filters an area of that size every 12 minutes to remove 99.97 percent of airborne particles, making it a good choice for a small bedroom. Blueair’s products are verified by the Association of Home Appliance Manufacturers for Clean Air Delivery Rate, the EPA for Energy Star rating, and the California Air Resources Board for electrical safety and ozone emission. It comes two machine washable pre-filter fabric sleeves in black and blue. Additional washable pre-filters ($10) to match your decor are available in crystal pink, buff yellow, and light gray.
Shop now: Blueair Blue Pure 411, $120
2. LG Puricare Air Purifier Round Console, $300.
Certified asthma and allergy friendly, LG’s air purifier has a room coverage of 248 square feet. A three-stage filtration system, including a deodorizing filter, removes 99.97 percent of particulates. It’s complete with a timer, filter alarm, and child lock. This model also comes in gold.
Shop now: LG Puricare Air Purifier Round Console, $300
3. Coway Airmega 150, $190
This Energy Star certified air purifier from Coway is perfect for small living spaces and bedrooms, as it’s able to reduce contaminants in rooms up to 214 square feet. A three-stage filter reduces combines a pre-filter, an odor filter, and a true HEPA filter. These work to remove airborne odors and pollutants including allergens, pet dander, and second-hand smoke. It senses indoor air particles and adjusts the fan speed accordingly to keep your air pure. And when you use it on auto mode, it’ll stop the fan will stop and enter low-noise mode when no indoor air pollution is detected for 30 minutes.
Shop now: Coway Airmega 150, $190
4. Dyson Pure Humidify+Cool, $800
Take everything you love about Dyson’s top-line air purification technology, and add a humidifier. With the release of its newest product, Dyson tackles two common air quality problems at once: dirty air and dry air. It removes 99.97 percent of allergens and pollutants including pollen, mold, and bacteria, then reports air quality to your Dyson Link app. (Lack of humidity can also lead to higher-than-average levels of dust, says Dr. McKeon.) A new breeze mode uses a complex algorithm to mimic natural airflow patterns and it’s also way easier to clean than a traditional humidifier. You can take it to the next level with the Dyson Pure Humidify+Cool Cryptomic ($900), which captures a variety of volatile organic compounds, and completely destroy some of the most toxic at a molecular level.
Shop now: Dyson Pure Humidify+Cool, $800
Originally posted April 7, 2020; updated October 2, 2020.
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