The average residential boiler lasts 15 to 30 years, depending on the model, quality of installation, and how well it’s maintained. Boilers that receive annual tune-ups and timely repairs often stay efficient longer, while neglected systems may need replacement much sooner. As boilers age, efficiency can drop—leading to higher heating costs and more frequent breakdowns. At Donc, we inspect and service boilers across Denver to help homeowners extend system life and decide the right time to upgrade to a modern, high-efficiency unit.
