What You're Removing · reference
Do Air Purifiers Help With Cooking smoke?
rated, compare the smoke CADR
cooking smoke belongs to the fine end EPA tests
The honest answer: cooking smoke is a particle problem, and a rated one. Frying and searing put fine particles into the air, and the tobacco-smoke CADR, the column EPA points to for the smallest particles, is the honest comparator for them.
The honest caveat: the range hood is still the right tool first. Extraction at the hob beats dilution in the room, and the smell of the meal is a gas with no published CADR at all.
Is cooking smoke a particle?#
The smoke and the aerosol grease are particles, the fine end of the range, the same class EPA probes with its tobacco-smoke test.
The aroma is a different substance entirely: gas-phase, unrated, and the reason the kitchen smells like the kitchen.
What the rating covers#
The smoke CADR measures how a machine handles fine particles. For a household that fries, that column says more than any badge on the front.
Carbon in the filter stack helps with the smell, but carbon carries no comparable number, only the particle figures can be compared.
What sizing means here#
The kitchen row governs: a floor between the 100 and 200 sq ft rows takes 130 cfm, rounded up between rows, 8-foot ceiling assumed.
Cooking is episodic, so run the unit while the hob is on and for a while after. Grease loads filters faster than anything else in a home, carbon stages do the unrated work and wear out doing it.
Suggested next step
Compare what the table asks for
Search listings for the published minimum your room needs, then check the smoke CADR on the shortlist before anything else.
Limits and honest caveats#
- The range hood extracts at source; run it every time, purifier or not.
- Keep the purifier out of the steam and grease path, filters are not non-stick.
- The smell is unrated; expectations should be set by physics, not the box.
- Check the pre-filter often; cooking aerosols are sticky.
Where the marketing overreaches#
"Odour elimination" numbers do not exist, because no published test produces them. The rated claim a box can make is a CADR for a room size.
A "kitchen-grade" badge is seasoning. The smoke column is the meal.
Questions people actually ask
Sources
- U.S. Environmental Protection Agency, Guide to Air Cleaners in the Home (2nd edition), retrieved 2026-08-30
Quoted and transcribed, never paraphrased into new numbers. This site does not interpolate between published figures.
Suggested next step
One more angle before you decide
The minimum is settled, spend the rest of the decision on noise, filter cost and the smoke CADR.
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Printed from https://roomandfilter.com/pollutants/air-purifier-for-cooking-smoke, “Do Air Purifiers Help With Cooking smoke?”. Figures from U.S. Environmental Protection Agency, Guide to Air Cleaners in the Home (2nd edition), retrieved 2026-08-30. No prices are shown on this site, by policy.