How often should water heater tanks be flushed to maintain efficiency?

Flushing water heater tanks at least once a year is recommended to maintain efficiency and prolong the lifespan of the unit. Over time, sediment and mineral deposits from the water can accumulate in the tank. This buildup can hinder the heater’s efficiency by insulating the heating elements, causing it to work harder and consume more energy to heat water. Regularly flushing the tank helps remove these deposits, ensuring efficient operation and reducing the risk of damage to the heater.

Additionally, annual maintenance can help spot potential issues early, such as rust or leaks, leading to timely repairs. While more frequent flushing may benefit certain conditions, such as in areas with a high mineral content in the water, once a year is a general guideline that is suitable for most households.