Purifies the Air with 3-in-1 Composite Filter — Pre-filter, TRUE HEPA Filter, & Activated Carbon Filter.
It is recommended to change the Composite Filter (Pre-Filter, HEPA Filter & Activated Carbon Filter) every 3 to 6 months, depending on the ambient air quality. The service life of 3-6 months is not a rigid standard time, which needs to be judged according to the cumulative purification amount of the filter and the operating environment. WBM purifier will remind the user to replace the Composite Filter after using it for 1500 hours. When the FILTER RESET light turns on, it is reminding the user to replace the Composite Filter. Turn the Composite Filter Cover clockwise, from LOCK to OPEN, to open the Composite Filter Cover, and take out the old Composite Filter.