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Step 1
Check retail outlets, or surf the Internet, and find out what air purifier brands there are, what makes each one unique, and how much each brand costs.
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Step 2
Read air purifier customer reviews. There is nothing better than obtaining information directly from people who have went through the buying process before you. This can easily help you weed out the air purifiers that don't do what they say they will do.
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Step 3
When you have narrowed down your choice of air purifiers, pay attention to the air purifier filters. How often do they have to be replaced? How much do they cost? Can they be clean and reused? This is an important step that will help you determine how much it will cost to maintain different types of air purifiers long term.










