Water is leaking from the bottom of the Laars boiler cabinet.
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.
Possible Causes
How to Fix / Troubleshooting
Safety first: Turn off power. If the leak is significant, close the system isolation valves and, if safe, the water supply to the boiler. Beware of hot water.
- Identify fluid type: Condensate is usually clear and may be slightly acidic; system water may contain rust or glycol. Smell and appearance can help distinguish.
- Inspect relief valve discharge: Check if water is coming from the pressure relief valve outlet. If so, see the high pressure scenario.
- Look inside cabinet: Remove the front panel and use a flashlight to locate the source—heat exchanger, pump, fittings, or condensate trap.
- Contain leak: Place a pan or towels to prevent water damage until repairs are made.
When to call a professional: Any internal leak, especially from the heat exchanger, requires professional diagnosis and repair or replacement.
Repair Difficulty
Required Part
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