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Final buying checklist Use this checklist before buying an air purifier for smoke: Smoke CADR matches your room size True HEPA or high-grade particle filter Real activated carbon filter No ozone generator Ionizer can stay off Replacement filters are easy to buy Noise level works for your room Room size is listed with higher air changes per hour Pre-filter can be cleaned Unit fits the room without blocked airflow The best air purifiers for smoke are not always the most expensive models

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