Changing your air filters every month will guarantee that the air in your house is clean and that your HVAC system is functioning correctly. Experts say that you can go for as long as three months before you need to change air filters in the home; the biggest benefit to changing it monthly is that it might be easier for you to remember to take care of this task. If you do this change on a regular basis you will extend the life of your system overall and improve the indoor air quality for your family’s health.