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Top-Rated Furnace Filters for Allergies, Dust, Pet Owners and MoreIts MERV 13 rating puts it squarely in HEPA territory. It’s capable of filtering out particles as small as 0.3 microns, but the furnace filter needs to be changed every 90 days to work as ...
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Why High-Performance Furnace Filters May Ruin the BlowerFurnace filters designed to act as whole-house air ... can remove particles as small as 0.3 microns, which make them HEPA-standard compliant. Ratings for filters range from 1 to 20 on the MERV ...
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