Q: "How often should I change the HEPA filter in my Amaircare 3000 portable air cleaner? I have cats and dogs and use it in my bedroom because my husband is allergic. Thanks." Susan
Answer: Usually the HEPA is changed every 2 to 3 years depending upon where the air purifier is used. What is as important is to wipe off the outside of the metal cabinet regularly and to change the pre-filters and inner filters regularly. Typically the outer filter is changed every 3 to 4 months and the inner filter every 6 months. The outer filter is made from foam and can be washed with detergent and water. The inner filter is made from a pure carbon blanket media that removes VOC's (volatile organic compounds like formaldehyde, paint thinner, etc.) and is not washable.
Americair manufactures its own Amaircare® brand HEPA filters in Canada. Filament is bonded to air filter media for structural support and even pleat spacing. After pleating, filters are enclosed in protective screens and cast in food-grade plastisol at both ends for a 100% air seal. 100 square feet of HEPA filtration material captures the smallest particulates. Each Amaircare HEPA filter is then tested for 99.97% efficiency, with a laser particle counter.
The Amaircare 3000 HEPA filter is a 16 inch cartridge filter that also fits the Amaircare 3050 and and Amaircare 4000. (These units are no longer made.) The same intervals should be followed for the other Amaircare air purifiers which include the Amaircare 2500 and the Roomaid with the VOC canister filter or with the standard HEPA and pre- and post-filters. There are also VOC cartridge filters that can be added to all these air purifiers.
Important: Always replace a HEPA air filter if an air purifier is turned off for more than 3 to 5 days. HEPA is a medium in which bacteria, viruses, etc. can grow if moisture collects in the filter media. Constant air flow keeps the HEPA filter media dry and free of such contaminants. I confess that I take my canister vacuum cleaner into the bedroom, remove the outer filter, lay it on the floor and vacuum it off with the floor tool every few weeks. We have two Boston Terriers and two cats so the dust raised is incredible. I wipe out the interior with a microfiber cloth.
Thank you for your question.