AstralPool Internal Water Leak

Heater is leaking water from the base or inside 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

Corroded copper heat exchanger, Loose union or manifold gasket, Cracked AstralPool header or manifold, Freeze damage to internal piping

How to Fix / Troubleshooting

Safety first: Turn off power and gas, and close water isolation valves to the heater. Water leaks can damage electrical components.

  • Identify leak source: Remove the front panel and use a flashlight to locate where water is originating—at unions, manifolds, or from the heat exchanger core.
  • Tighten unions: If water is seeping from unions, gently tighten them by hand, then slightly with a wrench if needed. Do not overtighten plastic unions.
  • Check drain plugs: Ensure any drain plugs on the heater are installed and snug.

If water is leaking from the heat exchanger or manifold body, the component will need replacement by a qualified technician.

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Repair Difficulty

Hard 4/5

Required Part

AstralPool Heat Exchanger
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