Which filters does the Winix P300 take?

HEPA filter 115115, HEPA filter 1712-0004-12, HEPA filter 1712-0004-11, HEPA filter 1712-0004-10.

Winix P300 air purifier filters: 115115

HEPA filter

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

Shop the hepa filter on Amazon Other models that use 115115

HEPA filter

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

Shop the hepa filter on Amazon Other models that use 1712-0004-12

HEPA filter

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

Shop the hepa filter on Amazon Other models that use 1712-0004-11

HEPA filter

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

Shop the hepa filter on Amazon Other models that use 1712-0004-10

1HEPA filter115115

Part numbers come from Winix (source 1, source 2, source 3, source 4), checked November 6, 2026. Amazon buttons open a search for the part number; we may earn a commission.

Where the model number is

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

Other Winix air purifiers

HR900HR950HR951NK100NK105P150P450QS T1 T810