The answer to 'how long does boiler last' is that a well-maintained boiler can typically last 15-30 years, depending on the type and quality of the boiler. Gas and oil-fired boilers tend to have a shorter lifespan of 15-20 years, while high-efficiency condensing boilers can last 20-30 years with proper care. The lifespan of a boiler is influenced by factors like the quality of installation, frequency of maintenance, and how hard the boiler has to work to heat the home.
Proper annual maintenance by a qualified HVAC technician is essential to maximizing the lifespan of a boiler. This includes cleaning, tuning, and inspecting the unit to identify and address any issues before they become major problems. With diligent care, many boilers can continue operating efficiently for 20 years or more.