{"id":5135,"date":"2014-05-12T11:28:41","date_gmt":"2014-05-12T11:28:41","guid":{"rendered":"http:\/\/localhost\/Asthma\/how-to-buy-an-air-purifier\/"},"modified":"2014-05-12T11:28:41","modified_gmt":"2014-05-12T11:28:41","slug":"how-to-buy-an-air-purifier","status":"publish","type":"post","link":"https:\/\/asthmaandallergyfriendly.com\/USA\/how-to-buy-an-air-purifier\/","title":{"rendered":"How to Buy an Air Purifier"},"content":{"rendered":"

An air filtration machine (which manufacturers often call a “purifier”) may help remove irritants from the air. But not all models are that useful \u2014 or even healthy. What to consider \u2014 and avoid \u2014 when shopping.<\/p>\n

What to Look For<\/strong><\/h3>\n

CADR<\/strong> (clean air delivery rate) delineates the maximum square footage recommended in which to use the filter (a good baseline for choosing a room unit) and how quickly it can remove three types of pollutants: smoke (with a number ranging from 10 to 450), dust (10 to 400), and pollen (25 to 450). The higher the value, the faster \u2014 but not necessarily the more thoroughly \u2014 the machine filters the air.<\/p>\n

 <\/p>\n

HEPA<\/strong>, the same type of filter that traps dust within vacuum cleaners. In a room air filter, HEPA can capture very small airborne particles before they settle.<\/p>\n

“Asthma and Allergy Friendly<\/strong>,” a relatively new certification from the Asthma and Allergy Foundation. Only a few units have earned it so far, by proving that they reduce (and don’t just redistribute) allergens.<\/p>\n

What to Skip<\/strong><\/h3>\n

Ozone:<\/strong> Some machines, which may be marketed as air fresheners, generate ozone for its sweet-smelling fragrance. Don’t buy these: Ozone is a known lung irritant.<\/p>\n

View Original Article<\/a><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

An air filtration machine (which manufacturers often call a “purifier”) may help remove irritants from the air. But not all models are that useful \u2014 or even healthy. What to consider \u2014 and avoid \u2014 when shopping. 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