How Often Should You Flush a Tankless Water Heater in Orange County?

Short answer: in most South Orange County homes without a water softener, flush your tankless water heater about once a year, and more often if you have very hard water or a big household. With a softener, you can usually go longer.

Why hard water matters

South OC has hard water. The minerals in it, mostly calcium and magnesium, build up as scale inside the heat exchanger of a tankless unit. Over time that scale makes the heater work harder, lowers hot water flow, and can cause error codes or lukewarm water.

Signs your tankless needs a flush

• •Hot water that runs lukewarm or cuts in and out
• •An error code on the unit's display
• •Lower hot water pressure than usual
• •It's been a year or more since the last flush

Why a flush record helps

Many tankless manufacturers expect regular maintenance, and scale damage often isn't covered under warranty. Keeping a dated record of each flush is a smart habit.

Tank water heaters need it too

Standard tank water heaters collect sediment at the bottom. A yearly flush helps them run quieter and last longer.

Our water heater flush

We flush both tank and tankless water heaters for $99, every day. Serving Laguna Niguel and South Orange County.