Heating costs go up when furnace filters get clogged with dust, dirt and lint. When the furnace filter is dirty the blower and motor have to work harder to keep your house heated. This is a common problem that is easily avoided.
During the months when your furnace is running consistently, make a point of changing the filter once a month. If the same system is used for air conditioning, consider changing the filter throughout warmer months as well. The simple process of changing the filter can save money on heating costs and prolong the furnace’s life, saving you much more on system replacement costs.