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Aside from the fact that the dog days of summer are upon us, much of the East Coast is currently under air quality alerts. While we often recommend air purifiers for churning stale, musty scents out of our homes—especially when away on vacation after our doors and windows have stayed shut for a prolonged period of time—we also appreciate these little machines for trapping not just large particles of dust or pet dander but micro-size pollutants (we’re talking bacteria-size small).

If you’re currently searching for an appliance that will clear your space of the smoke—sadly we can’t do anything about the gloomy haze outside—we recommend tapping one of our favorite air purifiers (all equipped with a HEPA filter to reduce nearly 100% of 0.01-micron particles) from Coway, below. Plus each of the four is on sale at Amazon, so you’ll get to breathing easy even sooner.

13% Off Airmega 150 True HEPA Air Purifier

airmega 500 coway in sage
Airmega 150, Coway ($165 was $190)

Our top air purifier pick for filtering out allergens and irritants in bedrooms, the Airmega 150 is also revered for its design-forward exterior. Offering several trendy shades, including sage green and peony pink, it’s sleek enough to sell at the MoMA Design Store and has won several awards for its eye-pleasing appearance. But this compact machine is also fully capable of clearing up to 518 square feet of space in just 30 minutes with a low, white-noise-level fan.

14% Off Airmega 200M True HEPA and Activated-Carbon Air Purifier

Coway Airmega 200M True HEPA and Activated-Carbon Air Purifier, AP-1518R - White
Airmega 200M in White, Coway ($197 was $230)

Unassuming in appearance, this version promises to quietly clean spaces less than 400 square feet. Its square silhouette is limited to either a black or white finish, but its compact size allows for a ton of flexibility: You can easily tuck it into the corner of any room or under a console table. Take advantage of its timer function and have this running for a couple hours each day while you’re away, or bump up the fan to a faster speed for instant relief as soon as you walk through the front door. 

16% Off Airmega Mighty True HEPA Air Purifier

Coway air purifier in black
Airmega AP-1512HH, Coway ($192 was $230)

Not to be mistaken for an oversize iPod Shuffle, the Airmega Mighty is one of Coway’s top-performing purifiers. It’s backed by 20,000-plus positive reviews on Amazon, earning a rare 4.7-star rating. While it’s best reserved for smaller rooms, our favorite feature is the built-in pollution sensor that will alert you to the quality of your indoor air. “Great filter. We have had it running around the clock on auto for about a year. Works great, no issues,” one shopper writes. And an allergy-suffering couple shares that it’s made a huge impact on their daily lives, adding, “For the first time in many allergy seasons, neither one of us woke up with stuffy nose.”

23% Off Airmega 300 True HEPA Air Purifier

Standing White Air Purifier by Coway
Airmega 300, Coway ($405 was $529)

If you’re on the market for something bigger, turn to the Airmega 300. This upgrade not only provides you with greater coverage—up to 1,256 square feet—by sucking in air from all sides, but it can intuitively adapt its fan speeds (it features a range of five different slow to quick settings) based on the pollutants in the air. And despite the bulkier frame, held up by tapered legs, it isn’t much louder than its smaller counterpart.