How Long Does a Furnace Last? (2026 Lifespan Data)

Furnace lifespan in 2026: premium brands 18–25 yrs, budget 12–18 yrs. Brand-level data, replacement signals, and what to do at the 15-year mark.

About HomeScore

HomeScore forecasts repairs, replacement timing, and total ownership cost across 40+ home systems. Used by 8,200+ buyers, sellers, and long-term homeowners in 2026.