Search·Winix
When you already know your purifier’s model number, this page shows the replacement filter numbers we match to it—then you can compare with your old filter and shop.
Brand
Winix
Model HR900
Winix HR900 Air Purifier
Series: PlasmaWave
These filter part numbers are matched to this air purifier model in our reference. Compare the part number with the label on your current filter or your owner’s manual before you buy.
Primary part on file
WINIX-115115
Winix Filter H (HEPA)
Replace about every 12 months
WINIX-115115 is the part shown first for model HR900; match that part number before checkout.
Why this part
- 2 mapped replacement part options for this purifier model in our reference
- Notes available for this part
- When a BuckParts Verified Link appears below, we checked that retailer product page against this part number. Compare it with your old filter before ordering.
Replacement filter fit for this model is based on our reference data.
BuckParts Verified Links
A place to buy that BuckParts has checked against the part, listing, and evidence we trust. Not every filter page has one—we only show a link when our checks clear for this part number.
Shown as a BuckParts Verified Link after we checked the product page against this filter number (2026-05-24).
All details for this part (notes, compatible models, BuckParts Verified Links when listed)
Other parts that also fit this model
Less common crosses — open each for full part details.
Notes & next steps
Search again if you need a different model or part number.
Typically uses Filter A + Filter B