Model compatibility ledger

Winix C545 replacement filter

Use this model page to match the purifier body label to the OEM filter SKU, compatible alternatives, sizing notes, and retailer listings before ordering.

OEM filter SKU

Filter S

Replacement interval

Every 12 months

Annual filter estimate

$50-$110

OEM filter first

Winix Filter S Replacement Kit

Retail-club smart purifier model.

Model numbers: C545
Aliases: Winix Costco C545
Dimensions: Panel filter kit for Winix C545.

Last reviewed 2026-05-29. Match both purifier model and filter SKU because retailers often group similar cartridges together.

OEM and compatible filter comparison

OEM entries are shown first. Compatible alternatives are not manufacturer-approved unless marked OEM.

Check	OEM filter	Compatible option
Manufacturer-recommended filter	Filter S · Winix Filter S Replacement Kit	Filter S · Winix Filter S Replacement Kit Panel filter kit for Winix C545. Annual estimate: $50-$110.

Retailer options for Filter S

Amazon

Winix C545 Filter S 1712-0096-00

Varies by listing

Affiliate link

Price note: Check retailer listing for current price.
Availability note: Use the SKU and model notes here to confirm fit before checkout.
Link disclosure: Amazon Associates; opens with sponsored nofollow attributes.

Check retailer listing

Verify the purifier model and filter SKU on the retailer page before ordering.

Walmart

Winix C545 Filter S