Winix C555 comes with two washable filters, i.e., pre-filter and AOC carbon filter. First, open the front panel and gently remove both the panels from the device.
Rinse the carbon filter with room temperature water. Use a brush to scrub the debris off the filter gently.
Once cleaned, let it dry for 24-hours or longer.
You can clean the pre-filter of the C555 using a vacuum cleaner and a soft brush. Avoid rinsing and washing the pre-filter as it can form sticky mud on the filter.