Air purifier for a 1000 sq ft room
Minimum smoke CADR: 667 cfm with an 8 ft ceiling, 750 cfm at 9 ft, 833 cfm at 10 ft.
Based on AHAM's 2/3 rule (smoke CADR ≥ 2/3 of floor area, scaled up for ceilings above 8 ft). For wildfire smoke or allergies, many people size up; the "headroom" column shows models with at least 50% more CADR than the minimum.
0 qualifying models, cheapest to run first
| Model | Smoke CADR (cfm) | ENERGY STAR room size (sq ft) | Energy use (kWh/yr) | Est. electricity/yr* | Headroom |
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*Estimate: ENERGY STAR annual kWh × U.S. average residential rate 18.31¢/kWh (EIA, July 2026 (preliminary)). ENERGY STAR's annual figure assumes 16 hours/day of operation under the DOE test procedure.
0 of these have at least 50% headroom. Not sure of your room size? Use the room calculator.
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