During the height of the heating and cooling seasons, your furnace filter is doing a lot of work keeping dust and other particles out of the air in your home.

To save money and energy and protect your investment in your furnace and air conditioner, check your furnace filter monthly.  If your furnace or air conditioner has been working overtime, you will likely need to change the filter at this time.  If you are using a high-efficiency filter you may get some more life out of it.  However, a new filter is a small investment to save energy, keep your air clean and save money too!