Troubleshooting guide
Dometic water heater rotten-egg odor
Use this for unpleasant rotten-egg or hydrogen-sulfide odor from a Dometic tank water heater's hot water.
Use this atlas to identify likely meaning and prepare for service. Shut off power, LP gas, fuel, or water when a listed appliance condition involves flame, gas smell, exhaust, generator shutdown, high temperature, moving jacks/slides, refrigerant, 120 VAC, control boards, repeated ignition failure, or a persistent lockout. Call the appliance maker, RV dealer, or a qualified RV technician for repair.
Owner-safe checklist
- Confirm the odor is from hot water, not an LP leak; use the gas-smell guide if gas odor is possible.
- Turn off the water heater before draining or flushing.
- Do not add aftermarket anode rods or non-approved devices to Dometic/Atwood aluminum tank water heaters.
- Use only owner-accessible tank draining or flushing steps if you are comfortable with them.
- Call service if odor persists, fittings are not owner-accessible, or water-heater service is needed.
Official sources
DometicDometic Unpleasant Odor | Water Heaters - Combo Gas & Electric | SupportDometicDometic XT Water Heaters Installation, Operation, and Maintenance ManualDometicDometic WH-6GA/WH-6GEA/WH-9GEA/WH-10GEA/WH-16GEA L.P. Gas Water Heater ManualDometicDometic Using After Market Anode Rods | Water Heaters - Combo Gas & Electric | SupportDometicDometic Using After Market Anode Rods | Water Heaters - Gas | SupportDometicDometic Unpleasant Odor | Water Heaters - Gas | Support