Replacement timing
How Long Does a Furnace Last?
Many furnaces operate for 15 to 20 years, but maintenance, installation quality, usage, and local conditions affect actual service life.
Age is one signal
An older furnace is not automatically unsafe or inefficient, but repair risk often rises over time.
Watch performance
Uneven temperatures, unusual noise, frequent cycling, and repeated repairs can signal a larger problem.
Plan before failure
Shopping before an emergency gives you more time to compare equipment, pricing, and financing.