Air PurifiersAir purifiers will remove many common irritants from the air, improving indoor air quality and helping those with allergies and asthma manage symptoms. With hundreds of air purifiers to review, it can be difficult to know which one will suit your needs. Keeping these factors in mind will help you find the best air purifier that fit your requirement and budget.
CADR in Air PurifierClean air deliver rates, or CADR, measure the maximum room size a filter can clean effectively. Many units will list both a maximum and a recommended size based on how often all the air in a room is cleaned per hour. The larger the room, the fewer times the air is cleaned. Units that can handle large rooms tend to be large themselves. Standard units work well in bedrooms while mini air purifiers are ideal for bathrooms and small office spaces.
HEPA Filtration of Air PurifierHigh efficiency particulate air filters, better known as HEPA filters, offer the most effective filtration for homes. To qualify for a HEPA rating, a filter must capture at least 99.97% of airborne particles larger than 0.3 microns in diametre, including dust, many bacteria and allergens.
HEPA filters are rated on a scale from E10 to U17. The higher the number, the more effective the filter. An E10 filter will provide healthy air for most households. Asthmatics or those with severe allergies should consider a more efficient filter.