如果你的商用锅炉运行正常的话, you can typically expect its lifetime use to be about 15 - 20 years. However, normal wear and tear, as well as seasonal changes, can wreak havoc on heating systems. You may need to replace your old boiler with a new one before its average lifespan is up - especially if you notice signs of malfunction. To prevent premature replacement or repair service for your HVAC system, schedule 预防空调维修.