Wellis Slow Leak / Evaporation vs. Hidden Leak

Water level drops noticeably between uses without visible external leak

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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

Leaking jet gasket behind foam, Small crack in plumbing, Leaking light fitting or suction fitting, Excessive evaporation due to poor cover seal

How to Fix / Troubleshooting

Safety first: Turn off power if water level drops near suction fittings or below skimmer.

  • 1. Rule out evaporation:
    • Ensure the cover seals tightly and is not waterlogged.
    • Mark the water level and monitor over 24–48 hours with the spa off.
  • 2. Inspect cabinet:
    • Remove panels and look for damp insulation or wet spots.
  • 3. Dye test (optional):
    • Use a spa-safe dye near suspected fittings (lights, jets) to see if dye is drawn into a leak.
  • 4. Address accessible leaks:
    • Tighten or reseal accessible fittings and replace gaskets as needed.
  • 5. Hidden leaks in foam: These often require specialized leak detection and foam excavation. Contact a Wellis technician.
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Repair Difficulty

Hard 4/5

Required Part

Jet Body Gasket Kit
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