Filters out formaldehyde and TVOCs in no time
- The extra-capacity formaldehyde removal filter cleans the air of harmful agents and is ultra-effective in formaldehyde removal. With German technology and specially treated activated carbon, it cleans the air of formaldehyde and other harmful gases in no time. Horizontal and vertical pleats perform equally well.
Healthy air protect alert warns you when to replace filter
Healthy air protect lock ensures healthy air always
- Healthy air protect alert gives you a timely warning when to replace the filter. When the filter is not replaced in time, the appliance stops functioning to avoid running with no effect since the filter is full. It is your assurance of healthy air always.
- Healthy air protect lock function ensures you healthy air always. It shuts off the purifier when healthy air can no longer be guaranteed. When one of the filters is almost full and has to be cleaned or replaced, the Healthy air protect alert warns you to replace or clean filter. When users do not replace concerned filter, the appliance stops operating and the appliance is locked. For Philips air purifier AC4091