How often do I need to change Filtrete filters?
The recommended change interval is three months. However, the effectiveness and life of the filter can vary and will depend on the individual conditions in your home. Unusually dirty duct work, construction work, furniture or drywall sanding, pets, the presence of smokers and running the fan continously are some of the things that can shorten the life of your filter. In these cases, change the filter more frequently.