Best valueLevoit Core 600S
True HEPA + activated carbon at a price that lets you put one in every room you sleep or cook in.
- Up to 635 sq ft
- H13 HEPA
- Smart app + voice

air
The only consumer purifier that publishes filtration data below 0.3 microns, where most HEPA claims stop.
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Quick take
Why we picked it
The only consumer purifier that publishes filtration data below 0.3 microns, where most HEPA claims stop.
Medical-grade HyperHEPA + V5-Cell carbon. Filters down to 0.003 microns, the smallest particles measured.
How we vetted this
RESEARCHEDWe recommend this product based on materials, certifications, and reputation. We have not yet bought or tested it in our own home.
If we move it into our home, we'll upgrade its tier and add first-person notes. If lab data emerges, we'll note that here.
Where to buy
Alternatives
Other picks in the same category we'd also consider, ranked the same way.
Best valueTrue HEPA + activated carbon at a price that lets you put one in every room you sleep or cook in.
Editor's pickGreen True HEPA plus an activated carbon stage tuned for cooking VOCs. The kitchen workhorse.

MERV 13 furnace filter. The cheapest upgrade with the largest square-footage impact, if your HVAC supports it.
Recommended based on the criteria for the cleaning + air chapter, written down before we shopped. Read the methodology →