+21 How Long Should An In Home Filter Be Changed Ideas. However, for a typical suburban home, you'll probably want to change filters at least every 90 days. But that time frame changes depending on the additional circumstances listed.

Does bacteria grow in brita filters? It is a general recommendation that you should change your air filter in your home every 30 days when using less expensive fiberglass filters. Replace filter every 90 days for most efficient system performance and lower energy costs.