How often do the active charcoal filters have to be changed?
Question: How often do the active charcoal filters have to be changed?
The filters should be changed every 3 months to ensure optimum extraction performance, although this may vary depending on what kind of cooking you normally do and how often. If you have a Smeg hood with electronic controls, an indicator light will tell you when it's time to change the filters. Clean filters are essential for optimum hood performance.