When you are in need of gas furnace repair for your Elizabethtown, KY, home, it is best to act quickly. Ignoring issues will only lead to them getting worse, and then you might require full gas furnace replacement, which will cost a lot more than simple repairs. A typical gas furnace can last up to 30 years before needing to be replaced, but you’ll cut that life span short if you don’t deal with repairs in a timely manner. Here’s what you need to know to determine whether your furnace needs to be repaired or replaced.