Doctors recommend True HEPA air purifiers
This True HEPA Air Purifier has been AHAM Certified for use in rooms up to 390 square feet. Its certified CADR ratings are: 250 for smoke, 250 for dust and 250 for pollen
Replace True HEPA Filter every 3-5 years – True HEPA replacement filter: HRF-F1 (requires 3 filters).
Replace Pre-filter every 3 months – Universal Carbon Pre-filter model HRF-AP1 OR Household Odor & Gas Reducing Pre-filter model HRF-APP1
To ensure stated product performance, use only Certified Honeywell Replacement Filters