How to Fix / Troubleshooting

Safety first: Turn off power and gas before working around the heater base.

Improve drainage: Ensure the Nirvana heater is installed on a raised, level pad with proper drainage away from the unit. Eliminate standing water.
Check for leaks: Inspect internal plumbing, the Nirvana heat exchanger, and unions for slow leaks contributing to corrosion.
Neutralize chemicals: Avoid storing chlorine or acid near the heater. Redirect any chemical fumes or off-gassing away from the cabinet.
Rust treatment: Light surface rust can be cleaned and treated with rust-inhibiting paint. Structural corrosion of the base or exchanger supports may require component or unit replacement.

Heater cabinet shows signs of rust and corrosion, especially near the base and around plumbing connections.

Possible Causes