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 C545
Winix C545 Air Purifier
Series: PlasmaWave
These filter part numbers are matched to this air purifier model in our reference. Compare the OEM number with the label on your current filter or your owner’s manual before you buy.
Best match first
WINIX-115115
Winix Filter H (HEPA)
Replace about every 12 months
All details for this part (notes, compatible models, buying options 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