What is the average lifespan of a furnace?

The average lifespan of a furnace typically ranges from 15 to 20 years. However, several factors can affect its longevity, such as regular maintenance, usage patterns, and the quality of installation. Proper maintenance, including regular filter replacement and professional inspections, can significantly extend the life of a furnace. Usage patterns, such as continuous operation during extreme temperatures, may also impact its lifespan. Additionally, the quality of installation plays a crucial role in the durability of a furnace. A poorly installed unit may experience frequent breakdowns and require premature replacement. Therefore, it is essential to follow manufacturer guidelines, schedule regular maintenance, and ensure proper installation to maximize the lifespan of a furnace.