Wellis Plumbing Leak / Shell Penetration Leak

Spa is leaking water inside cabinet or onto ground

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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

Loose pump or heater unions, Cracked PVC fittings, Leaking jet body gasket, Damaged slice valve or O-ring

How to Fix / Troubleshooting

Safety first: Turn off power at the breaker and do not run pumps with low water level. Be cautious of slippery surfaces.

  • 1. Identify leak source:
    • Remove side panels and inspect while the spa is filled.
    • Look around pump unions, heater unions, slice valves, and jet bodies.
  • 2. Tighten unions:
    • Hand-tighten any loose pump or heater unions; do not overtighten.
  • 3. Replace gaskets/O-rings:
    • If a union or slice valve continues to leak, replace its gasket or O-ring.
  • 4. Jet body leaks:
    • If water is seeping around a jet on the shell, the jet body gasket may be compromised.
    • This often requires draining the spa and accessing the rear of the jet body to reseal or replace it.
  • 5. Structural or inaccessible leaks: For leaks within foam insulation or under the shell, contact a Wellis service technician for leak detection and repair.
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Repair Difficulty

Hard 4/5

Required Part

Pump Union Gasket Set
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