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What should I do if my Ruud Ultra Plug-in Heat Pump with HydroBoost (120V Shared Circuit) has a rumbling noise?

CAUTION: For your safety, always consult a professional before attempting any fixes.

  • Possible Cause: Water conditions in your home caused a buildup of scale or mineral deposits in the water heater.
  • What To Do: Allow a few quarts of water to run from the drain valve to remove sediment settlings.

If the problem persists, please call Rudd’s customer service at 1-800-432-8373.

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