Dometic RV Water Heater Switches and Controls

What does the on/off switch on a Dometic RV water heater do?

The interior switch controls the 12V signal that tells your Dometic water heater to start a heating cycle, either on the electric element, the LP gas burner, or both depending on the model. When the switch fails, the heater will not fire even though power and gas are present. This collection covers 28 Dometic-compatible switches and control parts, including replacement rocker switches, indicator-light assemblies, and reset buttons for Atwood-branded Dometic units (Atwood became part of Dometic in 2014, so many switches carry both labels).

How do I know which Dometic water heater switch fits my unit?

Pull the model and serial sticker from inside the access door on the exterior of the heater. Dometic and Atwood model numbers follow a readable pattern: GC=Gas/Combo, E=Electric, H=Helium gas valve, the number is the gallon capacity (6 or 10), and trailing letters indicate features like DSI ignition. Match that model number to the switch listing before ordering. If you run a 10-gallon tank, the matching tank and element parts live in the 10 Gallon RV Water Heater collection.

Can I replace the reset button on a Dometic RV water heater myself?

Yes. The reset button is a low-voltage component mounted to the control board or ECO (Energy Cut Off) bracket and swaps out with a Phillips driver and basic spade-connector work. Disconnect shore power and the 12V battery before opening the access panel. If the new button trips again immediately, the issue is usually the thermostat, thermal fuse, or heating element rather than the switch itself. For wiring help on related 12V circuits, see our RV Electronics collection.

Does United RV Parts ship Dometic water heater switches with free shipping?

Orders over $100 ship free within the contiguous United States. Most switches and small control parts in this collection are low-weight items that ship via standard ground in 1-3 business days. If you need help confirming the right switch for your model before ordering, text or call our team at 817-984-1852.