Have you ever wondered How Long Should a Gas Boiler Last? As a homeowner, it’s one of the most common questions we hear. After all, your boiler is at the heart of your home’s heating and hot water, and knowing when it might be time for a change can help you plan ahead. In this post, we’ll look at the average lifespan of a gas boiler, the key factors that affect its longevity, and when it might be best to consider a boiler replacement.