How Often To Change Furnace Filter In House. When in doubt, we suggest that you check the filter to see if it is truly dirty. If you have furry pets living in your home, this will shorten the life of your furnace filter.
How often should you change your furnace filter? This can range based on the quality of the filter as well as the size. Anytime you're aware of more pollutants or particles in the air is a good time to change your filter, van deventer says.
A fresh version should be installed at least once per season.
In general, this is how often changing furnace filters needs to be done: In actuality, no person can tell you how often you should replace the furnace humidifier filter as it depends on the usage of the humidifier. There is no substitute for the analysis. It is a general recommendation that you should change your air filter in your home every 30 days when using less expensive fiberglass filters.