Wisconsin's Journal Sentinel likens your heating system to a car, which can last a very long time if you take care of it, schedule regular inspections and take the necessary maintenance steps to keep things running smoothly.
It's recommended that you hire a professional HVAC contractor to come in and take a look at your system, as well as make any needed repairs on your system. If you take care to perform preventative maintenance on your system and fix any deficiencies, your heating system should serve you well for many years.