FiltersDex

Air purifier filter finder

Find the exact replacement filter for your air purifier - the part number, whether it's True HEPA, CADR and room coverage where the manufacturer lists them, and the cheaper aftermarket equivalent. Browse by brand and model below.

70 filters · 35 True HEPA · 9 brands

GermGuardian (2)

FLT4825FLT5900

Shark (1)

HP102

Notable filters

AXPPF182AXPPF209AXPPF220AXPPF225AXPPF207AXPPF208AXPPF1AXPPF17Core 200S-PCore 200S-RFCore 300-P Pet AllergyCore 300-P-RFCore 300-RFCore 300-RF-SR Smoke RemoverCore 300-RF-TX Toxin AbsorberCore 400S-P

Frequently asked

How do I find my air purifier's replacement filter?

Pick your purifier's brand below, then your exact model. Each model page shows the exact filter part number, whether it's True HEPA, how often to replace it, and the cheaper aftermarket equivalent.

Is every replacement filter True HEPA?

No. Only filters our data lists as True HEPA are rated to capture at least 99.97% of 0.3-micron particles - many budget and aftermarket filters are 'HEPA-type' or 'HEPA-like' without meeting that standard, and we only claim True HEPA where the manufacturer specifies it.

What is CADR?

Clean Air Delivery Rate - a measure of how fast a purifier filters air, and the basis for its rated room coverage in square feet. Not every manufacturer publishes it; we only show CADR and coverage where the manufacturer lists them.