We’ve tested over a dozen air purifiers that range from $150 to $1,200 — but the most effective method for getting the green light from our air quality monitors is completely free: opening the windows. Of course, seasonal allergies, frightful weather and wildfires mean letting the outside air in is not always possible. That makes air purifiers your second best option. With fans and multi-layered filters, these simple machines can clear up odors, cooking emissions, dust particles, smoke, pet dander and more. We performed simple at-home tests to compare different models and compared the features and design of well-reviewed models to help you find the best air purifier for
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