Customer Reviews For The Honeywell True HEPA Replacement Filter O

Overall Rating

1 Review

Write a review

1 customers recommend this product

Sort by:

Mike

April 11, 2026

Air Purifier

Looks great. Very quiet. If you wonder how good an air purifier works check out the filter at cleaning. Since it runs 24/7 my hope it’s long lasting & filters are readily available.

Are these authentic Honeywell HEPA Replacement Filters?

Yes, the Honeywell Store only sells Certified Honeywell Filters.

Which air purifier models use Filter O?

The Honeywell Filter O is designed exclusively for the Honeywell HPA120 and HPA125 Allergen Plus Tabletop Air Purifier series. Using this specific 3-in-1 filter ensures that these tabletop models maintain their certified HEPA performance and internal air pressure.

What does "3-in-1 filtration" mean for this filter?

Unlike standard filters that may only target one type of pollutant, the HRF-O1 combines three layers of protection into a single unit:

Vacuumable Pre-Filter: Captures larger particles like dust and pet hair.
True HEPA Filter: Traps 99.97% of microscopic allergens (0.3 microns) such as pollen and smoke.
Activated Carbon Layer: Reduces common household odors and Volatile Organic Compounds (VOCs) from cleaning products and pets.

How often should I replace my Filter O?

To keep your air purifier running efficiently, it is recommended to replace the filter every 9 to 12 months. The exact timing depends on your air quality and how frequently the unit is used. Replacing it on schedule helps protect the motor and ensures the air remains noticeably fresher.

Will using non-Honeywell filters affect my air purifier?

Yes, it can. Certified Honeywell filters are specifically engineered for a precise fit within the HPA120/125 housing. Using generic or "compatible" brands may lead to air leakage around the edges (bypassing the filter), reduced motor efficiency, and could potentially void your air purifier's warranty.

The Honeywell Allergen Plus Series Air Purifier achieves proven HEPA performance through this powerful 3-in-1 Certified HEPA Air Purifier Filter. This single filter employs three distinct levels of purification. The first level uses a vacuumable Pre-Filter to capture larger airborne particles. The second level utilizes the certified HEPA Filter to effectively capture up to 99.97% of microscopic allergens and particles including dust, pollen, pet dander, dust mite debris, and smoke as small as 0.3 microns. The third level incorporates an Activated Carbon Filter for effective odor reduction, ensuring the air that passes through is not only clean but noticeably fresher.