The frequency of home heating and AC system air filter changes depends upon several factors within the home. Since each home is different, it is best to use the following details as a guide and make adjustments, as needed, to fit your home’s heating and air conditioning maintenance.


What type of air filter are you currently using?

There are all different types of air filters on the market today, from low-quality fiberglass to high-quality pleated fibers. Lower quality air filters have less filtering area to collect dust, pet dander, allergens, and other particles and remove them from the air. Higher quality filters do a much better job at removing these items.

However, you need to also take into account the following factors to determine how often you need to replace the air filter:

  • Do you have a problem with dust? If your home gets dusty easily, then you need to change the air filter more often. The problem could also be related to the type of air filter you are using.
  • Are there pets in the home? If you have pets, again, the air filter can get dirtier faster from pet dander and more frequent changes could be necessary.
  • Do you have allergies? If you suffer from allergies, you want to make sure your air filter is changed regularly. Dirty air filters can trigger allergies since they are no longer removing airborne particles and dust.

Typically, with a low-end filter, it will need to be changed every two to four weeks, whereas the better quality filters can last between two and three months on average—sometimes longer.

When selecting filters for your home, one thing you will notice is many have a MERV rating. The MERV rating is how effective the filter is at removing dust and airborne particles from the air. For most homes, a MERV rating between 8 and 13 is sufficient.

If you need assistance in selecting the right air filter for your heating and AC system, please feel free to contact Kaiser Air Conditioning at (805) 988-1800 today!