Question: How long should the filter last? HRF-R1 (Honeywell HEPA Filter – 1 pack)
Answer: Depending on operating conditions, the True-HEPA filters should be replaced every 12 months, and the Odor Reducing Pre-Filters every 3 months, especially if there have been heavy odors and particles in the home.
Question: Which air purifiers fit this filter?
Answer: The Honeywell Replacement Filter K is compatible with the following Honeywell models: HFD-120-Q, HFD-300 Series, HFD-310 and HFD-320.