Suburban Gas-Electric Water Heater Model Number SW6DE 5239A 6 Gallon - S6U5239A
The Suburban Advantage line of RV water heaters includes high recovery gas, gas/electric combination, gas/electric/motor aid and tankless, continuous models with sizes and features to match the requirements of almost any RV. Tank capacities include 4, 6, 10, 12 and 16 gallon models and tankless models provide up to 60,000 BTUH of endless hot water. Quality, efficiency, features, service, and selection - for more than 30 years, these have been the gold standard of Suburban water heaters. Take ADVANTAGE of Suburban’s expertise and reliability with longer lasting residential style tank and tankless water heaters.
Uses A Porcelain-Lined, Steel Water Heater Tank With An Anode Rod To "Absorb" The Electrolytical Action
Pressure Tested Twice During The Manufacturing Process To Ensure Its Integrity
A 1440 Watt Incoloy Electric Element Provides A Recovery Rate Of 6 Gallons Per Hour
Features An Indoor Mounted Switch Which Controls The Water Heater Ignition And Operation
Specifications
| Type: Electric/ LP Gas |
23.07" x 18.13" x 21.57" |
| Model: SW6DE |
20 3/8" x 22 ¾" x 18 1/4" |
| Capacity: 6 Gallon |
Black |
| Ignition Type: Direct Spark Ignition |
Front: 9,000 Rear right: 6,500 Rear left: 6,500 Oven: 7,100" |
| Wattage Rating: 1400 Watt |
Conventional |
| BTU Level: 12000 BTU |
3 |
| Width: 12-11/16 Inch |
Piezo |
| Height: 12-11/16 Inch |
17" |
| Depth: 19-3/16 Inch |
Black |
| With Insulation: No |
Metal Pane- Black |
| With Access Door: No |
Black |
| With Indicator Light: No |
Plastic Radius- Black |
| With Mounting Hardware: No |
Black |
| Blue Backlit Oven Knobs |
No |
| Broiler Function |
Yes |
| Grate |
Wire |
| Oven Light |
No |
| Racks |
1 |
| Rack Positions |
3 |
What our Experts Think
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Versatile Power Performance: Combines LP gas (12,000 BTU) and 120 V electric (1,440 W) heating for flexible, dependable hot water whether at campsite shore power or off-grid. Gas alone yields faster recovery, while electric adds convenience.
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Efficient Heat Recovery: With gas recovery around ~10 GPH and electric ~6 GPH, this unit heats water quickly for a 6-gallon tank capacity — ideal for small RV kitchens and showers.
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Durable Build Quality: Porcelain-lined steel tank with replaceable anode rod resists corrosion, extending life and preserving performance on the road.
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Reliable Ignition: Direct Spark Ignition (DSI) eliminates pilot light hassles and improves start-up reliability in mobile environments.
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Simple Installation & Service: Compact footprint fits standard RV cut-outs and maintains straightforward access for maintenance.
Q&A
Q: What is the Suburban SW6DE 5239A?
A: A 6-gallon RV water heater with Direct Spark Ignition (DSI) and a built-in electric heating element for versatile propane and electric hot water.
Q: What fuel and power options does it use?
A: Runs on liquid propane gas with 12 V DSI and features a 1,440 W electric Incoloy heating element for use with campground or shore power.
Q: How much hot water does it provide?
A: 6 gallon tank capacity; gas recovery ~10.1 gal/hr and electric recovery ~6.1 gal/hr.
Q: What are the key features?
A: Porcelain-lined steel tank with replaceable anode rod for corrosion protection, efficient heat transfer design, and robust construction tested for pressure and durability.
Q: What are the dimensions?
A: Approx. 12.7″ W × 12.7″ H × 19.2″ D (fits standard RV cut-outs).
Q: Is installation and maintenance easy?
A: Designed for RV side access; professional installation and periodic anode checks recommended for longest service life.
Q: Does it come with warranty support?
A: Backed by limited manufacturer warranties (typically 2 yr on components and extended on tank).
Q: Who should buy this?
A: RV, camper, and travel trailer owners who want reliable propane and electric hot water in a compact, high-efficiency unit.
Maintenance Tips
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Annual Anode Inspection: Check the anode rod yearly and replace it if heavily corroded to protect the porcelain-lined tank from rust and extend service life.
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Regular Drain & Flush: Drain and flush the tank annually to remove sediment buildup that reduces efficiency and performance.
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Test Pressure Relief Valve: Lift the pressure-relief valve yearly to verify it discharges freely; replace if it sticks or leaks.
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Check for Leaks: Inspect all gas and water connections regularly for tight seals; fix leaks promptly to avoid damage.
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Clean Burner & Vent: Keep vents, burner area, and combustion chamber free of debris or obstructions for proper airflow and ignition.
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Winterize Properly: Drain completely and bypass the unit if storing in freezing conditions to prevent freeze damage.
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Gas & Power Safety: Always shut off gas and electrical power before maintenance; use soapy water to check for gas leaks.
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Professional Service: Schedule an annual check-up with a qualified RV technician to ensure safe and reliable operation.
Damage 
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