In Miami-Dade County, Florida, it is generally recommended to change your air filters every 30 to 60 days. This depends on the size of your household and the presence of pets. For instance, a three-person household without pets should replace their air filter every 90 days. On the other hand, a single person without pets may be able to go as long as six months between filter changes.
As a general rule of thumb, it is best to replace your air filter every 1 to 3 months. This will help keep your heating and cooling system running efficiently and reduce the chances of a major breakdown. Additionally, changing your air filter regularly can help protect the internal mechanics of your air conditioning system from dirt and debris. For optimal performance, it is recommended that you have your heating and cooling system serviced twice a year - once in the spring and once in the fall.
During these tune-ups, your technician can check the condition of your air filter and suggest when it should be replaced.