Atwood G6A-8E 6-Gallon Gas/Electric RV Water Heater

The Atwood G6A-8E remains a dependable choice for RV owners who need flexible gas/electric water heating in a compact 6-gallon footprint.

4.3

HitchHaven score4.3 out of 5 · our editorial rating

6-gallon water capacity for consistent hot water supply
Dual gas and 120V electric heating modes
Direct spark ignition (DSI) for easy startup
Durable steel tank with porcelain lining
Electronic thermostat with high-limit safety switch
Compact design fits standard RV water heater bays

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Overview Specs Pros & cons Full review Related

The verdict

The Atwood G6A-8E remains a dependable choice for RV owners who need flexible gas/electric water heating in a compact 6-gallon footprint. Its dual-power design, DSI ignition, and proven Atwood build quality make it a solid replacement or OEM unit, though regular maintenance of the anode and tank lining is essential for long-term reliability.

Spec plate

Tank Capacity: 6 gallons
Power Source: 120V AC / Propane Gas
Ignition Type: Direct Spark Ignition (DSI)
Tank Material: Porcelain-lined steel
Dimensions: 20.1 x 15.75 x 15.1 inches

Pros & cons

What we like

Fast heat recovery compared to many tank-style units
Flexible operation on propane, electric, or both
Reliable DSI ignition reduces manual lighting hassle
Well-supported by widely available replacement parts
Solid build quality typical of Atwood/Dometic engineering

What to watch

Porcelain-lined steel tank can corrode over time if anode rod neglected
Electric-only mode heats slower than gas
Installation can be tricky without prior RV plumbing experience
Replacement door/accessories sometimes sold separately
Older units may require compatible control panel upgrades

Full review

The Atwood G6A-8E water heater is a reliable six-gallon gas and electric water heating unit designed specifically for recreational vehicles and campers, giving owners the flexibility to heat water using LP gas, a 120-volt electrical hookup, or both simultaneously for faster recovery times. Built with a durable porcelain-lined steel tank, this unit resists corrosion and mineral buildup far better than standard tanks, ensuring a longer service life even under the frequent on-and-off demands of mobile living. Its compact dimensions make it an easy fit for the water heater bays found in countless RV, travel trailer, and camper models, allowing for straightforward installation whether you're replacing an aging unit or outfitting a rig from scratch.

Functionally, the G6A-8E is engineered to deliver dependable hot water for showers, dishwashing, and general cleanup without placing excessive strain on your RV's propane supply or electrical system. The dual energy source design means that campers parked at a full-hookup site can rely on electric power to save on gas, while those boondocking off-grid can switch to LP operation to keep the hot water flowing regardless of shore power availability. The unit's heating element and thermostat are calibrated to maintain consistent water temperature, and the six-gallon capacity strikes a practical balance between water volume and the limited space and weight considerations inherent to RV construction.

Durability and ease of maintenance are central to this water heater's design, with features like a drain plug for simple winterization and a pressure relief valve that safeguards against overheating or excess tank pressure. The exterior access door and controls are designed for straightforward operation from outside the vehicle, letting users light the pilot, adjust settings, or monitor the unit without needing to access the interior living space. For RV owners and campers who prioritize consistent hot water access during road trips, extended camping stays, or full-time RV living, the Atwood G6A-8E offers a proven, field-tested solution that integrates seamlessly into the broader plumbing system of the vehicle.

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