RV Water Heater Parts

RV Water Heater Parts

Shop RV water heater parts for Dometic, Suburban, and Girard water heaters used in motorhomes, travel trailers, fifth wheels, toy haulers, and truck campers. Find replacement components for gas-only, gas and electric, tank-style, XT, and tankless RV water heaters.

Available parts include control boards, thermostats, heating elements, gas valves, igniters, burners, sensors, switches, anode rods, drain plugs, exterior doors, wiring harnesses, and other repair components.

Dometic RV Water Heater Parts

Shop replacement parts for current Dometic water heaters and select older Atwood models now supported under the Dometic name.

Common Dometic and Atwood water heater parts include:

  • Control boards

  • Gas valves

  • Ignition electrodes

  • Thermal cutoff kits

  • Thermostats

  • Electric heating elements

  • Relays and switches

  • Drain plugs

  • Pressure-relief valves

  • Mixing valves

  • Exterior access doors

  • Wiring harnesses

Dometic parts should be selected using the complete water-heater model and product number. Similar-looking parts may differ between older Atwood models and current Dometic WH-series water heaters.

Suburban RV Water Heater Parts

Shop Suburban water heater parts for 6-, 10-, 12-, and larger tank models, Direct Fit water heaters, and Suburban tankless systems.

Common Suburban RV water heater parts include:

  • Anode rods

  • Electric heating elements

  • Control boards

  • Gas valves

  • Burner assemblies

  • Ignition electrodes

  • Thermostats and limit switches

  • Relays

  • Exterior doors

  • Pressure-relief valves

  • Switches

  • Wiring harnesses

  • Tankless controllers and sensors

Suburban tank water heaters use porcelain-lined steel tanks and normally require a sacrificial anode rod. Use the complete SW, SAW, IW, or ST model number when selecting replacement parts.

Girard RV Water Heater Parts

Shop Girard tankless water heater parts for current GSWH-2 models and select older Girard water heaters.

Common Girard parts include:

  • Control boards

  • Digital wall controllers

  • Flow sensors

  • Temperature sensors

  • Gas valves

  • Blower motors

  • Igniters

  • Flame sensors

  • Pressure switches

  • Wiring harnesses

  • Freeze-protection components

  • Exterior doors

  • Trim rings

Parts for the Girard GSWH-1, GSWH-1M, and GSWH-2 may not be interchangeable. Confirm the complete model and original part number before ordering.

Common RV Water Heater Replacement Parts

RV water heaters combine propane, electricity, water, ignition controls, and safety components. A problem with any one of these systems can prevent the water heater from operating correctly.

Common replacement categories include:

  • Control boards and ignition modules

  • Thermostats and thermal cutoffs

  • Gas valves and regulators

  • Burners and burner tubes

  • Igniters and flame sensors

  • Electric heating elements

  • Relays and switches

  • Flow and temperature sensors

  • Anode rods and drain plugs

  • Pressure-relief valves

  • Exterior doors and access panels

  • Wiring and electrical connectors

The correct part depends on the manufacturer, model, serial number, and production revision of the water heater.

RV Water Heater Control Boards

The control board manages the ignition sequence, gas valve, flame detection, safety shutdowns, and other water-heater functions.

A failed control board may cause symptoms such as:

  • No ignition

  • Repeated ignition attempts

  • Burner shutdown

  • Fault lights

  • No response from the interior switch

  • Intermittent operation

Control boards are highly model-specific. Match the complete part number whenever possible rather than selecting a board based only on the water-heater brand.

RV Water Heater Thermostats and Thermal Cutoffs

Thermostats regulate water temperature and shut the burner or electric element off when the proper temperature is reached.

High-limit switches, ECO thermostats, and thermal cutoffs provide additional protection against overheating or flame-related damage.

These parts may look similar across several water heaters but have different temperature ratings, wiring, mounting methods, and operating functions.

RV Water Heater Electric Heating Elements

Electric heating elements are used in gas and electric tank-style RV water heaters. They operate on 120-volt AC power and allow the water heater to use campground or generator electricity.

Before replacing an element, verify:

  • Water-heater model

  • Element wattage

  • Voltage

  • Thread size

  • Gasket requirements

  • Switch and relay condition

  • Thermostat operation

Never energize an electric heating element unless the water-heater tank is completely full. Operating the element dry can cause it to fail almost immediately.

RV Water Heater Ignition Parts

Direct-spark ignition systems use an electrode to ignite the propane burner and detect the presence of a flame.

Common ignition-related parts include:

  • Spark electrodes

  • Flame sensors

  • Ignition wires

  • Control boards

  • Gas valves

  • Burner tubes

  • Thermal cutoff devices

Ignition problems may also be caused by low 12-volt power, poor grounding, restricted burners, propane-pressure issues, or damaged wiring.

RV Water Heater Anode Rods and Drain Plugs

Suburban tank water heaters normally use a sacrificial anode rod that also functions as the tank drain. The rod protects the porcelain-lined steel tank by corroding before the tank itself.

Dometic and older Atwood water heaters commonly use aluminum tanks and generally require a drain plug rather than an anode rod.

Do not install an anode rod based only on the gallon capacity of the water heater. Use the drain component specified for the exact manufacturer and model.

RV Water Heater Doors and Access Panels

Replacement exterior doors are available for Dometic, Suburban, and Girard water heaters.

The correct door depends on:

  • Manufacturer

  • Water-heater model

  • Tank or tankless design

  • Original opening size

  • Mounting style

  • Intake and exhaust configuration

  • Exterior color

Doors for tankless water heaters are functional parts of the combustion intake and exhaust system. Use only a compatible door or panel approved for the exact model.

Find the Correct RV Water Heater Part

Locate the water-heater data label before ordering replacement parts. Record the complete manufacturer, model number, product number, and serial number.

The model number is usually found behind the exterior access door or on the side of the water-heater housing.

Browse Dometic, Suburban, and Girard RV water heater parts by brand, model, and part category to find the correct component for your repair.

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