Do I really have to change my air filter often?
Yes, changing your air filter regularly helps save on bills and extends the life of your system. Changing your filter every three months is even better. All of the air in your home circulates and re-circulates through the same filter attached to your indoor unit. Filters become clogged, causing your system to work less efficiently and costing you more to operate it. If left unchanged long enough, your system could fail completely.