The average person takes around 20,000 breaths per day, the majority of which usually occur indoors—either at work or at home.

This means that keeping your home’s air in tiptop shape and free of potentially harmful particles should be a top priority. If you live in a remote area with high outdoor air quality, opening your windows is one way to clear allergens and irritants from your air. If you live in a polluted city or have a preexisting respiratory condition, you might want to consider buying an air purifier. But keep in mind: Not all air purifiers are created equal.

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