Winix AIR PURIFIER

C909
replacement filter

YOUR FILTER MATCH

Filter A

115115

The linked source lists this model. Checked 2026-09-18. Availability and price may change.

Buying guidance for C909

Do the Winix 5510 and C909 use the same filters?

No. Winix specifies Filter Q (1712-0123-00) for the 5510 and Filter A (115115) for the C909. Choose the part listed for your exact model; the shared Winix brand does not make these filter sets interchangeable.

What should I compare in a Filter A package?

The manufacturer Filter A set contains one HEPA filter and four carbon filters. Winix recommends about 12 months for the HEPA filter and three months for each carbon filter. The four carbon sheets are replacements over time, not four complete HEPA changes.

Source references (checked 2026-10-10 unless dated separately): Winix Filter Q — 5510 compatibility · Winix Filter A — C909 compatibility. Package calculations are based on the listed filter counts.

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Manufacturer: Winix
Purifier model: C909
Replacement guidance: Replace the HEPA filter every 12 months and the carbon filter every 3 months.
Manufacturer source package: One HEPA filter and four carbon filters.

Compatibility source

Winix filter product information ↗

This page reports model-to-filter compatibility. It does not independently test filtration performance or certify third-party alternatives.

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