Check out what we do at Queen City Heating and Cooling.
Furnaces, in our area of the Ozarks, last 15-18 years.
It is important to have your system checked seasonally for proper functionality and safety. One bad part on your system may be costing you money on your utility bill, but more importantly, your furnace may be causing you to live in an unsafe environment. Issues with your system could lead to a fire or even carbon monoxide poisoning.
Most furnace upgrades are going from the old furnace at 60-65% to a new furnace at 95%+. There have been many improvements to furnaces of the past. These improvements save you about 30% off your gas bill and up to 80% on the electricity needed to run the blower.