Model compatibility ledger

Xiaomi Mi Air Purifier 3H 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

M8R-FLH

Replacement interval

Every 8 months

Annual filter estimate

$45-$110

OEM filter first

Xiaomi Mi Air Purifier HEPA Filter

Mi smart purifier using cylindrical filter cartridges.

Model numbers: 3H, Mi Air Purifier 3H
Aliases: Xiaomi 3H filter, Mi 3H HEPA filter
Dimensions: Cylindrical cartridge for Mi Air Purifier 3H family.

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	M8R-FLH · Xiaomi Mi Air Purifier HEPA Filter	M8R-FLH · Xiaomi Mi Air Purifier HEPA Filter Cylindrical cartridge for Mi Air Purifier 3H family. Annual estimate: $45-$110.

Retailer options for M8R-FLH

Amazon

Xiaomi Mi Air Purifier 3H filter

Varies by listing

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Availability note: Use the SKU and model notes here to confirm fit before checkout.
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Check retailer listing

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

Xiaomi

Mi Air Purifier 3H filter