Fits checked Oct 1, 2026 · How we check
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Hunter · air purifier filter

Hunter H-PF400 pre-filter

H-PF400 EcoSilver Replacement Air Purifier Pre-Filter, 2 Pack. Part H-PF400. Replace every 3 months. Fits 1 model and their listed variants.

Buy H-PF400 pre-filter on AmazonManufacturer page

Opens an Amazon search for Hunter H-PF400 pre-filter. Check the listing says H-PF400.

Fits these models

  • Hunter HP400 as the pre-filter · HP400BLB, HP400BLS, HP400WHS, HP400WHGR

Part numbers

Genuine part
H-PF400
How often
Replace every 3 months
What is in it
EcoSilver coconut carbon pre-filter
Size
17.5 x 18.1 x 0.1 in

Sources

  • Which filter fits hunterpureair.com Maker's own page checked Oct 1, 2026
    Fits Hunter air purifier models HP400, HP400BLS, HP400BLB, HP400WHS, HP400WHGR. Package contains two (2) pre-filters.
  • How often hunterpureair.com Maker's own page checked Oct 1, 2026
    Recommended to replace every 3 months for maximum efficiency