How to Locate Your Home's Air Filters

it has to work harder. When your unit works harder, it also causes your utility bill to increase. If you have just moved into a new house or are not experienced with changing the air filter, you may be curious about where you can change them. Once you locate your air filters, you will want to change them every three months depending on your air quality, whether or not you have a lot of traffic in your home and other factors.