
Honeywell HRF-U1
Score: 75/100
Honeywell HRFSP1
Score: 75/100Rankings

The Honeywell HEPA-Type filter is a genuine replacement for HHT270/290 series purifiers, offering dual-layer filtration for allergens and odors. Its main drawback is the frequent four-month replacement cycle and lower particle capture efficiency compared to True HEPA. It is ideal for users of Honeywell tabletop/tower purifiers needing reliable, certified performance.

The Honeywell HRFSP1 is an enhanced S-series air purifier filter designed to target pet odors using activated carbon and zeolite. It reduces pet odors up to 3.5x faster than standard filters when used with a pre-filter and HEPA filter in compatible Honeywell units. Ideal for multi-pet households needing faster odor control alongside HEPA filtration.
| Attribute | ![]() | ![]() |
|---|---|---|
4 monthsbest | 3 months | |
99 percentbest | — | |
| ↓ lower better | 2 micronsbest | — |
2best | — | |
| ↓ lower better | 0.29 lbsbest | 0.53 lbs |
1best | 1best |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Compatibility & Fit(1) | ||
Compatible Models | Honeywell HHT270, HHT290 Series | HPA3100, HPA3200, HPA3300, HPA5100, HPA5150, HPA5200, HPA5220, HPA5250, HPA5300, HPA5350 |
Maintenance & Lifespan(1) | ||
Replacement Interval (months) | 4 months | 3 months |
Physical & Packaging(2) | ||
Weight (lbs) | 0.29 lbs | 0.53 lbs |
Dimensions | 1.0 x 10.0 x 5.0 | 0.39 x 10.6 x 6.9 |
Filtration Performance(2) | ||
Filtration Standard | HEPA-Type | S-series Enhanced |
Target Contaminants | Dust, pollen, smoke, pet dander, mold spores, dust mites, VOCs, household odors | pet odors |


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

Professional reviewers highlight the filter's dual-layer design as highly effective for managing both allergens and odors in tabletop and tower purifiers.
Everyday users rate the filter highly, praising its ability to reduce dust, pollen, smoke, and odors effectively.

Manufacturer claims emphasize a 3.5x faster pet odor reduction rate via activated carbon and zeolite, positioning the filter as a customizable enhancement for InSight and PowerPlus series purifiers.
Everyday users commonly praise the filter for making all the difference in managing cat odors when used with HEPA filters.
“These pet odor filters make all the difference... keeping our cat odors manageable”


