The answer to 'how long does boiler last' is that a well-maintained boiler can typically last between 15 to 30 years, depending on the type and quality of the boiler, as well as how it is used and maintained. Properly servicing and performing regular maintenance on your boiler is key to extending its lifespan.
Boilers that are used in homes with high heating demands or in harsh environments may have a shorter lifespan, around 10-15 years, while high-quality, well-maintained boilers in moderate-use homes can potentially last 20-30 years. Regular tune-ups, cleaning, and addressing any issues promptly can help maximize the boiler's longevity.