Comparison of allergens collected from furnace filters and vacuum floor dust

The ideal determinant of allergen exposure would be knowing the specific types and amounts of allergen material deposited in the airways during any period.1 Because this is impractical, proxies for exposure determination have been used. In homes with forced-air heating ventilation and air conditioning, all air is passed through the system approximately once every hour.2 The filter in that system should collect a representative sample of airborne allergens. We previously reported that dust from high-efficiency furnace filters (FFs) contains substantial amounts of aeroallergen.

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