The average lifespan of a well-maintained furnace is typically around 15 to 20 years. However, this can vary depending on various factors such as the brand, model, installation quality, usage patterns, maintenance, and overall system care. Some furnaces may last even longer with proper maintenance, while others may experience issues or wear out earlier.
Regular maintenance and timely repairs can help extend the lifespan of your furnace. If your furnace is approaching the 15-year mark or experiencing frequent breakdowns, it may be worth considering a replacement to ensure reliable and efficient heating in your home.