How to Fix / Troubleshooting

Safety first: Turn off power and gas. Sooting indicates unsafe combustion and potential carbon monoxide production.

Inspect air intake: Ensure all combustion air openings and louvers on the Nirvana heater are clear of debris, leaves, or spider webs.
Clean burners: Remove the burner tray and clean the Nirvana burner assembly with a soft brush and compressed air. Clear any debris from burner ports.
Check venting: Verify that the exhaust vent is properly sized and not restricted.
Professional combustion test: Have a licensed technician check gas pressure, verify correct orifices, and perform a combustion analysis. Adjust or repair as needed.
Do not operate: Do not use the heater until soot production is resolved and combustion is verified safe.

Heater operates but produces visible soot or dark staining on the exhaust outlet.

Possible Causes