Primary replacement filter set
Winix Filter A – 115115 replacement filter
Fits 5300, 5300-2, 5500, 6300, 6300-2, 9800, AM90, C535, C909, P300. Winix sells this as a one-year replacement filter set: replace the True HEPA filter every 12 months and the included activated carbon filters every 3 months.
Compatible models
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Filter A 115115
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Check eBay prices for 115115Frequently asked questions
How often should I replace the Winix Filter A (115115)?
Winix sells this as a one-year replacement filter set: replace the True HEPA filter every 12 months and the included activated carbon filters every 3 months. The Filter Replacement Indicator LED on the unit also illuminates when a filter change is due.
Which Winix models use the Filter A 115115?
According to the official Winix product page, Filter A (115115) fits Winix 5300, Winix 5300-2, Winix 5500 and 7 more models. Verify the model label on your unit before ordering.
Is the Filter A (115115) washable?
No. Winix does not describe Filter A (115115) as washable; replace it on schedule. Only the fine-mesh pre-filter built into the unit is permanent and washable.
Do aftermarket 115115 filters work?
Marketplace listings include both genuine Winix and aftermarket filters. Aftermarket filters are usually cheaper, but Winix states its limited warranty is voided if non-Winix brand filters are used in the unit. Match the exact part number 115115 and check seller details before buying.
Source
Official Winix America product page identifies Filter A, SKU 115115, as compatible with models 5300, 5300-2, 5500, 6300, 6300-2, 9800, AM90, C535, C909 and P300.