Should You Upgrade a Working Gas Furnace?
A gas furnace has an average service life of more than 15 years. About 20 percent of gas furnaces are still working at the 20-year mark. However, “service life” simply means the span of time during which the unit still starts up and generates heat. Many homeowners may wonder whether an aging furnace that’s still technically functioning should be kept on the job or replaced. Here are some considerations to help you make that call: