Air Filter LookupAir purifier filter finder

Air purifier filter finder

Find the right replacement filter for your air purifier

Type the model number from your purifier's label or the part number on your old filter. We match it to the manufacturer's official replacement part, then show where to buy it.

Search by model or part number

Use the model number on your purifier's label, or the part number printed on your old filter.

Matching filters appear as you type.

Sponsored eBay links are labeled. We may earn a commission from qualifying purchases.

Browse the catalog

Shop replacement filters by brand

All part numbers

Coway

2 models · 1 filter

Levoit

24 models · 39 filters

Winix

41 models · 31 filters

Start here

Model

Levoit Core 300

Uses Core 300 Series 3-Stage Original Filter Core 300-RF

Avoid ordering the wrong size

How to find your replacement filter

  1. Read the model label

    The model number is printed on a sticker on the back or bottom of your air purifier.

  2. Match the part number

    Search the model to see its primary filter name and exact manufacturer part number.

  3. Compare and order

    Check that the listing names the same part number, then compare price, pack size, and shipping.

Why trust these matches

Every filter match comes from the manufacturer

We only list a model-to-filter match when the purifier maker's own product page states it. Look-alike filters, seller titles, and similar model names never count as proof. Each page links to its source and the date it was checked.

Air Filter Lookup is independent. We don't sell filters; sponsored eBay links help keep the lookup free.

Browse all 227 filter part numbers

Free download

Air purifier filter crosswalk CSV

The full catalog is available as a spreadsheet with one row per official model-to-filter match, including the source link and replacement guidance.

Download the crosswalk CSV