HEPA filter
Air filters load up with dust and smells. The maker lists how often to change it.
Winix C535: the hepa filter is part 115115, and the air filter is part 1712-0094-00. Source: Winix, checked November 6, 2026.
Air filters load up with dust and smells. The maker lists how often to change it.
Air filters load up with dust and smells. The maker lists how often to change it.
Air filters load up with dust and smells. The maker lists how often to change it.
Air filters load up with dust and smells. The maker lists how often to change it.
Air filters load up with dust and smells. The maker lists how often to change it.
1HEPA filter115115Part numbers come from Winix (source 1, source 2, source 3, source 4, source 5), checked November 6, 2026. Amazon buttons open a search for the part number; we may earn a commission.