Funmit Winix C545 Replacement Filter S – 2 HE Electrostatic Filters + 8 Activated Carbon Pre-Filters for Odor Control

Funmit C545 Replacement Filter S is a complete filter combo designed to replace the Winix C545 S filter, delivering HE-grade particle capture plus activated carbon odor control for fresher indoor air.

Keep your Winix C545 air purifier performing like new with this Funmit replacement bundle. The kit includes two high-efficiency electrostatic HE-style filters and eight activated carbon pre-filters sized for the Winix C545 model. Filters are manufactured with upgraded electret media and a low-density activated carbon layer to balance filtration efficiency with low airflow resistance, preserving purifier performance while reducing noise and energy draw.

How does this replacement set restore my Winix C545’s air cleaning performance?

The high-efficiency elements trap fine particles such as dust, pet dander, and lint while the activated carbon pre-filters absorb common household odors from cooking and smoke. Together they recreate the original filtration stages of your air purifier so it can remove airborne particulates and reduce smells effectively.

• Includes 2 high-efficiency electrostatic filters sized H:12.8 x L:11.0 x W:2.0 inches.
• Comes with 8 activated carbon pre-filters sized H:13.0 x L:11.0 x W:0.2 inches.
• Electret technology increases particle capture without raising pressure on the fan.
• Carbon layer targets VOCs and common indoor odors.

Are these Funmit filters compatible with my Winix C545 unit?

Yes — this replacement combo is made specifically for the Winix C545 and corresponds to common OEM part numbers often referenced for the S filter. Installation is a direct swap with no tools required, making upkeep straightforward for most users.

• Designed as a replacement for Winix C545 S filter models (matches common part numbers).
• Drop-in fitment — remove the old filter and insert the Funmit replacements.
• No adapters or modifications needed for standard Winix C545 housings.
• Clear sizing guidance included to confirm fit before installation.

How often should I change these filters to keep air clean?

Replacement frequency depends on environment and use, but follow routine intervals for predictable performance. The high-efficiency filters typically last longer while the lightweight carbon pre-filters capture larger debris and odors more frequently.

• High-efficiency electrostatic filters: replace every 6–12 months.
• Activated carbon pre-filters: replace every 2–3 months.
• Shorter intervals recommended for smoky, dusty, or pet-heavy homes.
• Regular checks help maintain airflow and quiet operation.

Will using these filters affect noise or energy use of my purifier?

The Funmit set is engineered with lower-density materials and an upgraded electret layer to reduce airflow resistance. That design aims to keep the purifier running efficiently with minimal additional fan strain, often resulting in steadier noise levels and modest energy savings versus denser alternatives.

• Electret media increases filtration without forcing the fan harder.
• Nano-fiber and low-density carbon help reduce operating noise.
• Maintaining clean filters prevents the unit from working harder and using more power.
• Replacing clogged pre-filters often restores quieter operation quickly.

Who is this for: The Funmit C545 Replacement Filter S combo suits Winix C545 owners who want an affordable, full replacement pack to restore original filtration and odor control. It’s ideal for households with pets, cooking odors, or seasonal dust where predictable maintenance and easy, tool-free installation matter. If you need a complete set of high-efficiency elements plus multiple activated carbon pre-filters to keep a unit running smoothly month after month, this bundle covers those needs while matching Winix C545 sizing standards.