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What could be causing my Rinnai water heater to produce water that is discolored or appears rusty?


James Thompson, Water Heater Repair Expert

If your Rinnai water heater is dispensing discolored or rusty water, it could be due to several reasons. The most common cause is corrosion inside the tank, which can occur over time. This is especially likely if the anode rod, which is designed to prevent corrosion, is failing. Another possible cause is sediment build-up in the tank. Regular maintenance and flushing of the tank can help prevent these issues. If you’re experiencing this problem, it’s best to consult with a professional.

At 5 Star Best Plumbing, our specialists are experienced in all aspects of water heater repair and can help diagnose and resolve any issues you may be experiencing with your appliance.

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