How important is my furnace filter?
The 1” wide furnace filter protects the equipment from dirt and debris. The 1” filter should be checked at least once a month. Always use the rule “when in doubt, change it out”. If left out of the system dirt will damage the system. A dense pleat filter will restrict too much air as will a dirty filter. This will also cause problems for the system. If air cleaning is what you wish the filter to do you will need a media air cleaning system installed. These wider filters can be changed every 3-6 months. Just remember, a 1” filter is only designed to protect the equipment.