You should flush your water heater at least once a year to remove sediment buildup that can reduce efficiency and shorten the unit's lifespan

. However, if you live in an area with hard water, which contains higher mineral content, flushing twice a year (every 6 months) is recommended to prevent faster sediment accumulation

. Older water heaters or those with older pipes may also benefit from more frequent flushing, about twice per year

. In summary:

• Standard recommendation: Flush once a year.
• Hard water areas or older systems: Flush twice a year (spring and fall).
• Signs to flush more often: Low hot water pressure, rust-colored water, sediment visible in the tank, or reduced heating efficiency

This maintenance helps keep the heating element clear of sediment, improving energy efficiency and prolonging the water heater's life