
GermGuardian FLT4825
Score: 82/100
Honeywell HRF-R1
Score: 85/100Rankings

The Honeywell True HEPA Replacement Filter (HRF-R1) is an OEM filter designed for specific Honeywell air purifier series, capturing 99.97% of particles at 0.3 microns. It requires annual replacement and may necessitate purchasing multiple units per machine, which increases overall cost. Ideal for allergy sufferers owning compatible Honeywell units who prioritize warranty compliance.

GermGuardian HEPA PURE filters are genuine OEM replacement filters designed for specific GermGuardian air purifier models. They feature a multi-layer design combining True HEPA media that captures 99.97% of particles as small as 0.1 microns, an activated carbon layer for odor and VOC reduction, and pre-filters to trap larger debris. Best suited for allergy sufferers and pet owners in medium-sized rooms.
| Attribute | ![]() | ![]() |
|---|---|---|
6 months | 12 monthsbest | |
728 sq_ftbest | — | |
140 cfmbest | — | |
99.97 percentbest | 99.97 percentbest | |
| ↓ lower better | 0.1 micronsbest | 0.3 microns |
3best | — | |
| ↓ lower better | 0.35 lbs | 0.25 lbsbest |
1best | 1best |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Compatibility & Fit(1) | ||
Compatible Models | GermGuardian AC4825 Series | HPA-090, HPA-100, HPA200, HPA300 Series |
Maintenance & Lifespan(1) | ||
Replacement Interval (months) | 6 months | 12 months |
Physical & Packaging(2) | ||
Weight (lbs) | 0.35 lbs | 0.25 lbs |
Dimensions | 4.76 x 1.29 x 15.77 | 1.65 x 10.32 x 6.69 |
Filtration Performance(2) | ||
Minimum Particle Size Captured (microns) | 0.1 microns | 0.3 microns |
Activated Carbon Filter | true | false |

Products in the top-left offer the best value (high score, low price).

Professional reviewers highlight the GermGuardian HEPA PURE filters as industry-standard solutions that effectively capture 99.97% of particles on the first pass. They note efficient airflow paths comparable to competitors like Honeywell, with clean times around 23 minutes for test rooms.
Everyday users commonly praise the filters for their excellent capture of pet dander and dust, as well as noticeable reductions in smoke and household odors. Recurring complaints focus on the need for frequent replacements every six months, issues with off-brand alternatives not fitting or working well, and perceptions that the lightweight build feels flimsy.

“I did not understand that I needed THREE filters! ... replacement filters will run you more than half the purchase”




Professional reviewers and editors lack dedicated reviews for these replacement filters.
Everyday consumers generally praise the filters for working as expected in reducing allergens and providing reliable performance when paired with Honeywell units.