What is the lifespan of a water tank?
The answer to this question depends on so many factors that it is hard to put a precise timeframe on the life expectancy of a water tank, however, you can expect a tank to last anywhere from 10 years up to 30+ years depending on the material it is made from, where it is positioned and how much use it gets. Water Heater Lifespan If your tank water heater is more than 10 years old, it may be time to consider replacing it. With proper maintenance, a tank water heater tank should last six to 12 years. A tankless water heater can last for more than 20 years.