
Isinlive HEPA Replacement Filter
Score: 82/100
Honeywell HRFSP1
Score: 75/100Rankings

The Isinlive HPA300 is a True HEPA filter replacement designed for Honeywell air purifiers, featuring pre-cut activated carbon pre-filters and capturing 99.97% of particles down to 0.3 microns. It offers a budget-friendly multi-pack alternative to OEM filters with high CADR ratings. Best for budget-conscious owners of Honeywell HPA300-series purifiers needing frequent replacements in medium rooms.

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 | ![]() | ![]() |
|---|---|---|
9 monthsbest | 3 months | |
465 sq_ftbest | — | |
320 cfmbest | — | |
99.97 percentbest | — | |
| ↓ lower better | 0.3 micronsbest | — |
2best | — | |
| ↓ lower better | 1.79 lbs | 0.53 lbsbest |
3best | 1 |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Compatibility & Fit(1) | ||
Compatible Models | Honeywell HPA300 Series (HPA100/200/300/5000) | HPA3100, HPA3200, HPA3300, HPA5100, HPA5150, HPA5200, HPA5220, HPA5250, HPA5300, HPA5350 |
Maintenance & Lifespan(1) | ||
Replacement Interval (months) | 9 months | 3 months |
Physical & Packaging(3) | ||
Weight (lbs) | 1.79 lbs | 0.53 lbs |
Dimensions | 10.2 x 6.5 x 1.6 | 0.39 x 10.6 x 6.9 |
Package Quantity | 3 | 1 |
Filtration Performance(2) | ||
Filtration Standard | True HEPA | S-series Enhanced |
Target Contaminants | Dust, pollen, smoke, VOCs, pet odors | pet odors |

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

Professional reviewers note that compatible HEPA filters like those for the Honeywell HPA300 effectively clear PM1 particles in 34-50 minutes at low speeds. They highlight the combined pre-filter and carbon layer's ability to handle larger particles and odors, while noting that three smaller HEPA filters allow for partial replacement.
Everyday users praise the easy installation, perfect fit, and effective odor control in homes with pets or smokers. Recurring positives include the value of multi-packs and the convenience of pre-cut filters without trimming needs.

“These pet odor filters make all the difference... keeping our cat odors manageable”




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.