What is a Water Heater Thermal Expansion Tank, and Do I Need One?

Water Heater on the Fritz Lately?

If your water heater is more than 10 years old, if you’re noticing leaks or corrosion around the base of the tank, or if it doesn’t consistently heat your water to the temperature you want (or doesn’t heat your water at all – BRR!), it’s probably time to replace your water heater.