Safety first: Unplug the spa before tightening any fittings or working around water near electrical components.

Identify leak source:
- Fill the spa and observe where water drips or pools.
- Check all inlet/outlet hose connections at the control unit and spa wall.
Tighten clamps and collars:
- Gently tighten hose clamps or threaded collars by hand, then a small additional turn with a tool if needed.
Inspect O-rings and gaskets:
- Disassemble leaking joints and inspect O-rings for cracks or flattening.
- Replace with compatible Avenli O-rings and apply a thin layer of silicone lubricant.
Check liner fittings:
- If water seeps from around the spa wall fittings, the liner gasket set may need replacement.

Spa leaks water from around the base of the control unit or from hose connections.

Possible Causes