How often do I change my air filters?
This depends on the type of air filter system you have. If you have a removable media filter (looks like a cardboard box) then it depends on the width of your filter. 1″ width should be changed very month. 2″ Every other month. 4″ or 5″ Every 6 months. If your home has a lot of dust, or a lot of activity (the outside door opening a lot), or pets you may want to change your air filter more frequently.