: Mechanical filters typically need replacement every 6–12 months, while carbon pre-filters for odor removal may need changing every 3 months . Air Purifier Buying Guide - Consumer Reports
: Look for "True HEPA" or "Absolute HEPA" on the label, which guarantees capture of 99.97% of particles at 0.3 microns . Be wary of "HEPA-type" or "HEPA-like" terms, which are unregulated . where to buy hepa filter
: Recommended for ensuring you receive "True HEPA" certified products rather than unregulated "HEPA-type" alternatives . Popular Replacement Filter Options Honeywell HEPA Filter Kit (A/R) : Mechanical filters typically need replacement every 6–12
Medical-grade H13 filtration for BreatheSmart 45i models. Available at (~$69) and Lowe's (~$69) . : Recommended for ensuring you receive "True HEPA"
A multi-layer replacement for popular AC4825 models. Found at (~$20) and Lowe's (~$26) . Genuine - - Alen B4 Pure Hepa Air Purifier Filter Go to product viewer dialog for this item.
A budget-friendly 2-in-1 filter for portable personal purifiers. Available at (~$11) . Critical Buying Tips