Which hepa filter does the Winix B151 take?

Winix B151 air purifier hepa filter

Winix B151: the hepa filter is part 113050. Source: Winix, checked November 6, 2026.

Air filters load up with dust and smells. The maker lists how often to change it.

1HEPA filter113050

Part numbers come from Winix (source), checked November 6, 2026. Amazon buttons open a search for the part number; we may earn a commission.

On a label on the bottom or the back of the purifier.