Everyone tells you to get furnace maintenance done before winter, which is true and not especially helpful when you are standing in October wondering if you missed the window. Indianapolis has a specific rhythm to its heating season, and the best appointment slots disappear in a predictable pattern. Here is when to book, why it matters, and what happens if you are already late.

You have heard that skipping furnace maintenance costs more in the long run. You have also noticed the people saying it are the ones selling the tune-up. Fair question. The savings are real but they do not come from where most homeowners assume, and they do not apply equally to every furnace. Here is the honest math on what a tune-up returns and when it does not.