Guardian Exhaust System Leak / Muffler Failure

Excessive exhaust noise or rattling from muffler area; exhaust leak visible as soot around joints.

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

Cracked muffler, Loose exhaust flange bolts, Failed exhaust gasket, Corroded exhaust pipe

Safety first: Turn the controller to OFF and open the main breaker. Allow the exhaust system to cool completely before touching.

Inspect exhaust joints: Look for black soot marks around flanges and joints indicating leaks.
Tighten hardware: Tighten loose exhaust manifold and muffler bolts to specification.
Replace gaskets: Install new exhaust gaskets where leaks are found.
Muffler replacement: Replace a cracked or rusted muffler with a Guardian-approved part.

Medium 3/5

Exhaust Muffler

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