Sta-Rite Internal Water Leak

Water leaking from the bottom of the heater cabinet

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Cracked heat exchanger, Leaking manifold O-rings, Loose union fittings, Corroded header

How to Fix / Troubleshooting

Safety: Turn off power and close the water valves to the heater. Allow the system to depressurize before opening any plumbing.

  • Identify leak source: Remove the front and side panels of the Sta-Rite heater and use a flashlight to trace the leak to its origin (manifold, unions, exchanger).
  • Check unions and fittings: Tighten inlet and outlet unions slightly; do not overtighten plastic fittings. Replace any cracked unions.
  • Inspect manifold O-rings: Look for drips at the manifold/header joints. Replace Sta-Rite manifold O-rings if hardened or flattened.
  • Evaluate heat exchanger: If water is leaking from the exchanger body or tubes, the Sta-Rite heat exchanger is likely cracked and must be replaced.
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Repair Difficulty

Hard 4/5

Required Part

Manifold O-Ring Kit
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