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What is Room Coverage

Room coverage is determined by Air Changes Per Hour (ACPH). An air change per hour translates to how many times an air purifier can clean a room in one hour. For example, 2 air changes per hour shows that an air purifier can clean a room once every 30 minutes.

An allergy and asthma sufferer needs at least 4 air changes per hour, which means an air purifier can clean a room at least once every 15 minutes.

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