How often should air filters be cleaned or replaced?
A. Generally, they should be replaced or cleaned once every three to six months depending on how often your equipment runs, how many pets and people are in the building, and the particular design of the filter. It may be necessary to visually inspect the filter every couple of months before determining the frequency of replacement or cleaning. I fsomeone in your home has allergies, you may want to replace your filters more frequently or speak with one of our specialists about a Trane CleanEffects system. Many new systems are equipped with permanent filters. These should be cleaned according to the instructions supplied by the manufacturer or the contractor that installed the original equipment. When replacing disposable filters, match the type and size of the original filter.