How Long Should a 50 Gallon Water Heater Last?

This is one of the questions most frequently asked when considering home heating and one of the first things to consider when looking for a new water heater. The answer varies depending on the manufacturer, but a general rule is that a water heater with an average lifespan of three years should be replaced every five years or less. This assumes that no leaks are found, and that all normal use has been done. A three-year expectancy is the absolute lowest, and many manufacturers advertise ten years or even twenty year warranties. The key to determining how long should a 50 gallon water heater last is assessing the use and how you will be using your water heater.