Cleaning tips for allergy and asthma sufferers.Air cleaners and air filters in the home.You can learn more about how we ensure our content is accurate and current by reading our editorial policy. We link primary sources - including studies, scientific references, and statistics - within each article and also list them in the resources section at the bottom of our articles. Medical News Today has strict sourcing guidelines and draws only from peer-reviewed studies, academic research institutions, and medical journals and associations. According to the EPA, ozone does not remove air particles, and ionizing air purifiers may not be as effective as HEPA filters. Some ionizing air purifiers produce ozone, which can irritate the respiratory system. The AAFA recommends air purifiers with certified asthma- and allergy-friendly filters, which remove almost 98% of allergen air particles. The Environmental Working Group recommends using a filter that replaces the air volume in a room two to three times every hour. They should also make sure the device has a suitable clean air delivery rate for the room in question. Room sizeĪ person should choose an air purifier appropriate for the size of the room they plan to use it in. This means just 3 in every 10,000 particles this size will not become trapped by the filter. HEPA purifiers remove at least 99.97% of particles 0.3 micrometers in diameter or larger. Look for an air purifier with a high-efficiency filter. When choosing an air purifier, people may wish to consider the following factors: Efficiency The Environmental Protection Agency (EPA) also points out that while air purifiers can help reduce indoor pollution, they cannot eliminate all indoor air pollutants. The Asthma and Allergy Foundation of America (AAFA) states that air-cleaning devices such as air purifiers might help people with asthma, but removing as many sources of environmental triggers as possible is the most effective way to reduce symptoms. However, research suggests they do not reduce the gas pollutants in tobacco smoke, such as nicotine, in the air. This study also called for further research into the role of air purifiers in asthma treatment.Īccording to a 2016 review, portable high-efficiency particulate air (HEPA) purifiers reduce particles in the air by around 25–50% and reduce asthma symptoms and attacks. The results indicated some significant improvements in both air quality and respiratory function with the use of air purifiers. A randomized group of participants used air purifiers in their bedrooms, while a control group did not. One 2018 study looked at the effects of air purifiers on 50 people with asthma. The review’s authors suggested that a combination of methods may help improve asthma outcomes, but further research among larger populations is needed. The researchers found that single strategies, such as using an air purifier alone, did not generally improve asthma measures. Air purifiers may help reduce some of these triggers.Ī 2018 review looked at how strategies to reduce indoor allergens affected asthma. Dust, smoke, and other pollutants or allergens can trigger asthma symptoms.
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