Do you sniffle and sneeze and wheeze your way through the year? If you are plagued by allergies and/or asthma, you may be considering purchasing a home air filtration system. Air purifier buying guide;How to choose:
If you want a purifier and don't have a forced-air system, consider a large portable. In addition to removing more particles at high speeds, the better large models still did well at lower, quieter speeds.
Weigh features carefully. Most air purifiers have an indicator that tells you when first to clean or replace the filter to maintain efficiency. But some indicators turn on based on length of time the unit has been running, not how dirty the filter is. Skip odor-removal features. In past tests it took up to an hour for them to make a difference--when they did anything at all.
And the certifications on the box? All tell how well a model filters particles at its highest speed. The certifications all also allow up to 50 parts per billion of ozone, a respiratory irritant. We advise against using models that produce any ozone, even if they are effective cleaners.
Check an air purifier's efficiency rating
If you still want one, use this air-purifier guide to choose. The Association of Home Appliance Manufacturers certifies most room models as part of a voluntary program that includes appropriate room size and maximum clean-air delivery rate (CADR), a measure of cleaning speed. We judge a CADR above 350 to be excellent and below 100 to be poor. Choose a model designed for an area larger than yours for better cleaning at a lower, quieter speed. Many whole-house filters list a minimum efficiency reporting value (MERV), developed by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers. The top performers in our tests typically had a MERV higher than 10.
Consider looking at the #Carrier Air Purifier.
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