
Levoit Core 300-P
Score: 88/100
Blueair Blue Pure 511i Max Replacement Filter
Score: 92/100Rankings

The Blueair Blue Pure 511i Max Genuine Replacement Filter is a high-performance filter featuring HEPASilent technology that captures 99.97% of particles down to 0.1 microns. It offers excellent odor control with its carbon layer and a washable pre-filter, though it is limited to the 511i Max model. Ideal for medium-sized rooms where quiet operation and smart home integration are priorities.

The Levoit Core 300 Replacement Filter (Pet Allergy version) is a genuine 3-stage filtration replacement designed for Levoit Core 300 series air purifiers. It features an upgraded activated carbon filter enhanced with ARC formula to neutralize pet odors and VOCs, alongside a HEPA-grade main filter. It is best suited for pet owners in small to medium rooms seeking relief from shedding pets and allergy sufferers.
| Attribute | ![]() | ![]() |
|---|---|---|
6 months | 9 monthsbest | |
219 sq_ft | 351 sq_ftbest | |
145 cfm | 174 cfmbest | |
99.97 percentbest | 99.97 percentbest | |
| ↓ lower better | 0.3 microns | 0.1 micronsbest |
3 | 4best | |
| ↓ lower better | 1.17 lbs | 0.485 lbsbest |
1best | — |
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| Attribute | ![]() | ![]() |
|---|---|---|
Compatibility & Fit(1) | ||
Compatible Models | Levoit Core 300 Series | Blue Pure 511i Max |
Maintenance & Lifespan(1) | ||
Replacement Interval (months) | 6 months | 9 months |
Physical & Packaging(2) | ||
Weight (lbs) | 1.17 lbs | 0.485 lbs |
Dimensions | 7.48 x 6.3 x 7.48 inches | 11.2 x 2.7 x 8.7 |
Filtration Performance(7) | ||
Filtration Standard | HEPA-grade | HEPASilent |
Coverage Area (sq_ft) | 219 sq_ft | 237-465 sq_ft |
Clean Air Delivery Rate (cfm) | 145 cfm | 152-174 cfm |
Minimum Particle Size Captured (microns) | 0.3 microns | 0.1 microns |
Filter Stages | 3 | 4 |
Air Changes Per Hour (ach) | 5 ach | 4.8 ach |
Pre-Filter Type | Non-woven fabric | Washable Fabric |

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

Professional reviewers praise the lab-tested performance of the Levoit Core 300 Pet Allergy filter, highlighting its strong CADR scores across smoke, dust, and pollen categories. Experts note that the upgraded activated carbon content beyond the standard 50 grams excels at capturing allergens and neutralizing odors effectively without requiring separate replacement units.
Everyday consumers rate the product highly for its easy assembly and effective pet deodorizing capabilities. Recurring themes in user feedback include strong odor control and significant allergen reduction, though some users express frustration with the frequent replacement schedule and occasional stock availability issues.




Professional reviewers highlight the four-stage HEPASilent filtration system as a superior alternative to traditional HEPA filters due to its quiet operation and energy efficiency. Experts note that the CADR ratings of 152-174 CFM make it highly effective for medium-sized rooms between 237-465 square feet.
Everyday users generally praise the hassle-free replacement process and the filter's effectiveness in managing common allergens like pollen and pet dander. Recurring themes include satisfaction with odor control for light household smells such as cooking and pets.