6 Gallon Dometic RV Water Heaters

Shop current 6 gallon Dometic RV water heaters for motorhomes, travel trailers, fifth wheels, truck campers, and other recreational vehicles. Dometic offers gas-only, gas and electric, and XT models built around a compact 6 gallon aluminum tank.

A 6 gallon Dometic water heater is a popular choice for RV owners who need dependable hot water without the additional space required for a traditional 10 gallon unit. These models are commonly used for new installations and as replacements for select older Dometic and Atwood RV water heaters.

Current 6 Gallon Dometic Water Heater Models

Current Dometic 6 gallon water heater options include the WH-6GA gas-only model, the WH-6GEA gas and electric model, and the WH-9GEA XT. The WH-9GEA XT has a physical 6 gallon tank but uses mixing-valve technology to provide the equivalent of approximately 9 gallons of usable hot water.

The right model will depend on the energy sources available in the RV, the amount of hot water required, and the dimensions and connections of the existing water heater.

Dometic WH-6GA 6 Gallon Gas Water Heater

The Dometic WH-6GA is a 6 gallon gas-only RV water heater powered by propane. It uses a 10,000 BTU electronic-ignition burner to heat the water and requires 12-volt DC power for the ignition and control system.

The WH-6GA is a practical choice for RV owners who primarily use propane, frequently camp without electrical hookups, or are replacing an older gas-only Atwood or Dometic water heater.

Its aluminum tank is lightweight, corrosion resistant, and does not require an anode rod. The exterior access door is sold separately and should be selected according to the installation and desired color.

Dometic WH-6GA product number: 9600024378.

Dometic WH-6GEA 6 Gallon Gas and Electric Water Heater

The Dometic WH-6GEA is a 6 gallon gas and electric RV water heater. It allows the water to be heated with propane, 120-volt AC electricity, or both energy sources when the RV and installation are properly configured.

Propane operation is useful while dry camping or traveling without shore power. Electric operation allows the RV owner to heat water using campground electricity rather than consuming propane. Using both heating sources can provide faster hot-water recovery when supported by the RV’s controls and electrical system.

The WH-6GEA is a strong replacement option for RV owners who want a conventional 6 gallon tank with the flexibility of both gas and electric operation.

Dometic WH-6GEA product number: 9600024379.

Dometic WH-9GEA XT 6 Gallon Water Heater

The Dometic WH-9GEA XT is a gas and electric RV water heater with a physical 6 gallon tank. Dometic’s XT mixing valve blends heated water from the tank with cold water before it reaches the RV’s faucets and shower.

This process allows the WH-9GEA XT to provide the equivalent of approximately 9 gallons of usable hot water while maintaining a compact 6 gallon tank size. It is a good choice for RV owners who want longer showers or greater hot-water availability without moving to a larger 10 gallon water heater.

The WH-9GEA XT includes a 10,000 BTU propane burner, a 1,400-watt electric heating element, electronic ignition, and an aluminum tank that does not require an anode rod.

Dometic WH-9GEA XT product number: 9600024380.

Gas-Only vs. Gas and Electric Dometic Water Heaters

A gas-only Dometic water heater uses propane as its heat source. This configuration is well suited for boondocking, dry camping, and RVs that are not regularly connected to shore power. The WH-6GA is the current gas-only option in the 6 gallon Dometic lineup.

Gas and electric models provide additional flexibility. They can operate on propane when electrical hookups are unavailable and use 120-volt AC electricity while the RV is connected to shore power. The WH-6GEA and WH-9GEA XT are gas and electric models.

The best choice depends on how the RV is used. Frequent dry campers may prefer the simplicity of the WH-6GA, while RV owners who regularly stay at powered campsites may benefit from the electric heating capability of the WH-6GEA or WH-9GEA XT.

What Is a Dometic XT Water Heater?

A Dometic XT water heater increases usable hot-water output through a thermostatic mixing valve. The water stored inside the tank is heated to a higher temperature and then blended with cold water as it leaves the unit.

The Dometic WH-9GEA XT uses this technology to provide approximately 33 percent more usable hot water than a conventional 6 gallon water heater. Although the model name references 9 gallons, the physical tank holds 6 gallons.

This distinction is important when comparing capacity, installation dimensions, and replacement compatibility.

Replacing an Older 6 Gallon Atwood Water Heater

Dometic now supports many products previously sold under the Atwood name. Current Dometic 6 gallon water heaters may replace select Atwood GC6AA, G6A, GCH6A, and related water heater models, but compatibility must be verified using the complete original model and product number.

Do not select a replacement based only on the tank capacity. Two water heaters may both hold 6 gallons while using different energy sources, wiring, switches, control systems, doors, depths, or installation components.

Before ordering, verify:

• The complete Atwood or Dometic model number

• The original product or SKU number

• Gas-only or gas and electric operation

• Sidewall cutout dimensions

• Overall water heater depth

• Exterior access-door size

• Water and propane connection locations

• 12-volt DC wiring

• 120-volt AC wiring

• Interior control switches

• Required adapter brackets

Adapter brackets may be necessary when installing a current Dometic water heater in an opening previously used by an older Atwood model.

Dometic 6 Gallon Water Heater Dimensions

The WH-6GA and WH-6GEA are designed for an installation opening approximately 12.75 inches high by 12.75 inches wide. Their required depth is approximately 19 to 20 inches, depending on how the unit and cutout are measured.

The WH-9GEA XT uses the same general height and width but requires additional depth for its mixing-valve system. Its listed cutout is approximately 12.75 inches high by 12.75 inches wide by 20.875 inches deep.

Always measure the available space and compare it with the specifications for the exact product number before ordering.

Do Dometic 6 Gallon Water Heaters Need an Anode Rod?

Current Dometic 6 gallon RV water heaters use aluminum tanks and do not require a sacrificial anode rod. This differs from many steel-tank water heaters that use an anode rod to help protect the tank from corrosion.

Installing an aftermarket anode rod in a Dometic aluminum tank is generally unnecessary. Use the manufacturer-specified drain plug and follow Dometic’s instructions for draining, flushing, and winterizing the water heater.

Are Exterior Doors Included?

Current Dometic replacement water heaters are commonly sold without an exterior access door. The correct door must be ordered separately when the existing door cannot be reused.

Dometic recommends door number 94050 in Arctic White or 94010 in Black for several current 6 gallon models. Compatibility should still be verified for the exact water heater and RV opening before ordering.

Find the Correct 6 Gallon Dometic Water Heater

Browse our selection of 6 gallon Dometic RV water heaters to compare gas-only, gas and electric, and XT models. Available options include the Dometic WH-6GA, WH-6GEA, and WH-9GEA XT.

For the most accurate replacement match, locate the data label on the existing water heater and record its complete model number and product number. These numbers provide more reliable identification than tank capacity or exterior appearance alone.