Reviewed Sep 2, 2026 · Manufacturer sources are linked in the comparison and finder.
Start with the model label, not the product nickname
A missing suffix can change the answer. “Core 300” is not a safe substitute for Core 300-P, and Winix 5500 is not the same lookup key as 5500-2. Read the model label on the purifier body or its manual before choosing a replacement.
Purifier Part Check returns unsupported rather than converting a near-match into a shopping result.
Two verified models, three different care actions
| Exact purifier | Part or layer | Care action | Verified replacement key |
|---|---|---|---|
| Levoit Core 300-P | Original 3-stage packaged filter | Replace the packaged filter; Levoit recommends 6–8 months depending on use. | Core 300-P-RF |
| Winix 5500-2 | Permanent pre-filter | Clean about every 14 days; this part is not included as a replacement in Filter H. | Keep / clean |
| Winix 5500-2 | Washable AOC carbon filter | Clean about every 3 months; replace with the HEPA set at about 12 months. | Filter H / 116130 |
| Winix 5500-2 | True HEPA filter | Do not wash; replace with the Filter H set at about 12 months. |
These intervals are manufacturer guidance, not a promise that every home will reach the same service life. Smoke load, operating time, and room conditions can shorten the interval.
A four-step ordering check
- 1Confirm the exact model.
Keep every number, dash, and suffix from the label.
- 2Name the layer that needs service.
Permanent pre-filter, washable carbon, and non-washable HEPA are different roles.
- 3Match the official filter key.
Use the manufacturer part name or SKU, not a retailer’s generic compatibility phrase.
- 4Check what the package contains.
A set may replace multiple layers while leaving a permanent pre-filter in the purifier.
What this guide deliberately does not answer
- No recommendation for Levoit Pet Allergy, Smoke Remover, or Toxin Absorber variants.
- No conversion from Coway AP-1512HH role names to an inferred SKU.
- No generic “fits Core 300” or “fits Winix 5500” claim without the exact supported suffix.
Those boundaries make the guide smaller, but they keep it useful without forcing a buyer toward an unverified part.