⏱️ Air Cleaning Time Calculator
How fast does your purifier clean the air? Enter room size and CADR to see cleaning time and air changes per hour.
Room & Purifier
Find CADR on the purifier box or spec sheet. Higher = faster cleaning.
12 min
to clean 1440 ft³ — 5.2 air changes/hr
180
Room ft²
180
Min CADR
Good ✓
Rating
💡 Allergies/asthma: aim 4+ ACH. Wildfire smoke: 6+ ACH. General use: 2+ ACH.
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