Nordic Hot Tubs Plumbing or Component Leak

Spa is leaking water inside the equipment bay or from under the 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

Loose pump union, Cracked heater union, Split PVC plumbing, Leaking jet body or gasket

How to Fix / Troubleshooting

Safety first: Turn off power at the GFCI breaker. Water and electricity are a dangerous combination.

  • Step 1 – Locate leak source: Remove the equipment bay panel and inspect while the spa is filled. Use a flashlight to trace drips back to their origin (pump unions, heater unions, valves, or plumbing joints).
  • Step 2 – Tighten unions: If water is seeping from pump or heater unions, hand-tighten them further. Do not overtighten to the point of cracking.
  • Step 3 – Inspect gaskets and O-rings: If tightening does not stop the leak, shut off power, drain below the leak, and disassemble the union. Replace worn O-rings or gaskets with Nordic-compatible parts.
  • Step 4 – Repair PVC joints: For leaks at glued PVC fittings, the joint may need to be cut out and replaced using new fittings and PVC cement. Allow proper cure time before refilling.
  • Step 5 – Check jets and fittings: If water appears from the shell area, a jet body or suction fitting gasket may be leaking and require removal and resealing from inside the spa.
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Repair Difficulty

Hard 4/5

Required Part

Pump Union Gasket
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