Amazon Is Running a Secret Sale on Air Purifiers Right Now

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Tons of Popular Mechanics top picks are on sale today.

Spring is in the air, which means allergens are, too. Dust mites, pet fur, mold, smoke, and viruses are often the invisible reasons behind sniffles and sneezes, and they all come to a head this season. And sometimes, cleaning the full house with high-powered vacuums and ensuring bedsheets get washed regularly still isn't enough to reduce allergens. That's where air purifiers come into play.

Indoor and outdoor air pollution is a growing global concern. Breathing in polluted air can worsen asthma and lead to other health concerns, like increasing the risk of cancer and strokes, according to a study published in the National Library of Medicine. That same study found that indoor air filters and purifiers were successful in reducing unwanted particles. Researchers found that HEPA (high-efficiency particulate air) filters can "capture 99.7 percent of all particles 0.3 microns or smaller."

Here at Popular Mechanics, we've long been at the forefront of testing and reviewing (and reading the fine print for) air purifiers. Our lists are thoroughly vetted by experts, and we read through hundreds of consumer reviews to make sure our picks are always top-notch.

When looking at air purifiers, it's also incredibly important to consider the size of your space, so we always note the optimal square footage so that consumers aren't powering up a too-small purifier and have it fall short of expectations.

Now, some of our all-time favorite portable purifiers and dust-specific filtering models are marked down on Amazon just in time for peak allergy season. Shop some of the best-reviewed, most trustworthy picks below.

This half-off Clorox option is best for rooms under 200 square feet. "I’ve only had this for about a week and I’ve already noticed a difference. I’m not as stuffy as I used to be when I wake up in the morning, and I sneeze a lot less," one reviewer noted.

This low-cost model is meant for small spaces — under 130 square feet — so use it for kids’ rooms and dorms, or pair it with another model to double down on efficiency.

An economical choice given it covers 750 square feet and is currently almost 30 percent off, this PM pick is well-loved on Amazon. It has 4.7 stars after over 30,000 reviews, with customers saying it makes a noticeable difference.

Ideal for spaces under 361 square feet, this Coway option has an LED light that lets you know how polluted the air is in your home. Popular Mechanics editors called it "a great choice if you’re looking for a no-frills portable air purifier that does its job. It works quietly unless it detects a large amount of pollution, in which case it can be louder than a standing fan."

Made for spaces under 403 square feet, this pick is high-tech and nearly silent. "At a max volume of 23 decibels, it's the quietest purifier on our list," editors wrote.

This Coway pick covers up to 1,560 square feet, so it's well worth the bigger price tag (which is currently over 50 percent off.) "It also has a variety of smart features, sleep settings, and a surprisingly compact design for such a capable portable air purifier... there's also a timer and pollution sensor," Popular Mechanics experts wrote earlier this year.

Megan is a freelance writer who specializes in E-Commerce, LGBTQ+ media, mental health, and astrology. Their email is [email protected].

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