Air Purifier Filter Finder
Menu

Model-first filter lookup

Find the exact air purifier replacement filter before you buy.

Search by purifier model, filter SKU, alias, or brand family to compare OEM filters, compatible alternatives, wrong-filter notes, and retailer options.

Showing popular model matches while the search field is empty.

Browse brands Find my model number

Best matches

Exact model numbers and filter SKUs rank first, followed by aliases and brand-family matches.

View full directory
Popular model Levoit Core 300 Uses Core 300-RF · replace every 8 months Core 300 and Core Mini filters are not interchangeable. Open model match Popular model Coway AP-1512HH Mighty Uses 3304899 · replace every 12 months Filter kits may include both HEPA and deodorization filters; confirm what is in the box. Open model match Popular model Winix 5500-2 Uses Filter H, 116130 · replace every 12 months Filter A and Filter H look similar in search results but are not the same kit. Open model match Popular model Blueair Blue Pure 211+ Uses F211PACF101435 · replace every 6 months Main filter and fabric pre-filter are separate parts. Open model match Popular model Honeywell HPA300 Uses HRF-R3, HRF-AP1 · replace every 12 months HPA300 typically takes three R-size HEPA filters. Open model match Popular model GermGuardian AC4825 Uses FLT4825 · replace every 8 months FLT4825 and FLT5000 are different sizes. Open model match

Brand directory

Browse supported purifier makers and model families.

Replacement guides

Read practical help for labels, SKUs, and fit checks.

Affiliate disclosure

See how retailer links and editorial notes are handled.

Popular brands

Start with the maker when the purifier label is readable but the exact model number needs confirmation.

All supported brands
3 supported models Blueair Blue Pure and DustMagnet families with washable fabric pre-filters and fitted main filters. Common SKUs: F211PACF101435, F411PACF101435, F311PACF101435 Browse 3 supported models Coway Mighty and Airmega purifiers with separate HEPA, deodorization, and pre-filter parts. Common SKUs: 3304899, Airmega Max2 400 Browse 3 supported models Honeywell Room purifiers that pair true HEPA filters with separate carbon pre-filter packs. Common SKUs: HRF-R3, HRF-AP1, HRF-R2 Browse 3 supported models Levoit Popular Core-series purifiers with model-specific cylindrical replacement filters. Common SKUs: Core 300-RF, Core 400S-RF, Core Mini-RF Browse 3 supported models Winix Tower and console purifiers that often use lettered replacement filter kits. Common SKUs: Filter H, 116130, Filter S Browse 2 supported models Dyson Purifying fans and humidifying purifiers with sealed HEPA and carbon filter assemblies. Common SKUs: 970341-01 Browse

How to avoid ordering the wrong filter

Replacement filters are usually sold by filter SKU, but owners often remember the purifier model instead. Use this page as a compatibility ledger: identify the purifier, confirm the OEM filter code, then compare compatible packs only after the dimensions and warning notes match.

Read the purifier label first

Use the model number printed on the rear, bottom, or inside-door label. Retailer titles often mix purifier names with filter names, so the physical label is the best starting point.

Match the OEM SKU before comparing packs

The finder shows the manufacturer filter code first, then compatible alternatives. Compare dimensions, pack quantity, and included carbon or pre-filter pieces before choosing a third-party listing.

Check warnings for look-alike filters

Many brands reuse similar family names across different cartridge sizes. Amber notes call out common mismatches, discontinued variants, and regional model codes to verify before checkout.

Last reviewed dataset records include replacement cadence, cost-range notes, and fit warnings where available. This site does not claim live prices, live inventory, or third-party manufacturer approval.

Retailer link handling

Affiliate-capable purchase links route from the centralized filter dataset into one shared retailer card so sponsored attributes, labels, and click telemetry stay consistent.

Amazon

Levoit Core 300-RF replacement filter

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.