Drake Mechanical changes filters when we come out and do our fall and spring preventative maintenance. For some systems this is enough depending on the filters installed. On a lot of other heating and cooling systems in the Treasure Valley this is not enough though and the furnace filter should be changed or checked each month. Clean furnace filters are very important for your furnace and air conditioner to work efficiently. They also are important for you and your family. There are many different types of filter installation methods, this is one installation method we don't recommend but there are a lot of them installed this way arround Boise Nampa and Caldwell. The prefered filter installation method is have an independent filter cabinet for your furnace filter to fit in. If you need furnace filters then give us a call, we can get all types and sizes of furnace filters and can save you a lot of money over filter outlet stores or the big box stores. For more information on furnace filters give us a call or click on the link below to send us an a mail.