Suburban 20.3L Gas-Electric Water Heater Kit – Black Door
The Suburban 20.3L Gas-Electric Water Heater Kit with Black Door is a compact, reliable hot water solution designed for caravans, motorhomes, and off-grid setups. Built for outdoor installation, it delivers hot water via gas heating with an electric boost, all accessible from a single coded exterior access point.
Easy External Service
Maintenance is simple: the limit switch, reset button, electric element, and combination drain/anode rod are all behind the removable outer door. Routine checks and servicing can be done without opening the cabinet or complex disassembly. The porcelain-lined steel tank features a sacrificial anode to extend tank life and reduce long-term maintenance.
Why Choose This Suburban Kit
External access for service: Removable door allows quick maintenance from outside the vehicle.
Dual heating options: Gas burner (~12,000 BTU) plus 1,440W electric element deliver fast hot water. Both can run together for higher recovery.
Strong recovery, compact footprint: 40 L/h at a 45°C rise, ideal for small RVs; unit measures 320 x 320 x 490 mm (allow extra for fittings).
Durable tank: Porcelain-lined steel with sacrificial anode; anode typically lasts 2–3 years.
Integrated controls: 12V wall-panel switch ignites gas burner and controls water temperature at a 54°C set point.
Quality fittings included: 12mm John Guest fittings and 1/2" BSP female water inlet for easy RV plumbing connections.
How It Works
The kit combines gas and electric heat for hot water on demand. Gas provides rapid heating, while the electric element offers steady boost or full electric operation when shore power is available. A 54°C set point ensures comfortable temperatures, and the integrated drain/anode design simplifies maintenance.
Specifications:
- Capacity: 20.3 L
- Heat sources: Gas + 240V electric (1,440W); can operate simultaneously
- Recovery rate: 40 L/h at 45°C rise
- Gas burner: ~12,000 BTU
- Electric element: 1,440W, 240V
- Set point: 54°C
- Inlet/outlet: 1/2" BSP female; 12mm John Guest fittings included
- Weight: 15 kg
- Dimensions: 320 H x 320 W x 490 D mm (allow ~50 mm for fittings)
- Installation: Must be done by qualified gas fitter; pump pressure max 45 PSI
Ideal Use
Perfect for RVs, travel trailers, and compact mobile homes where exterior access and space efficiency are key. Provides reliable hot water whether on gas or electric power, making it ideal for camping, long showers, or limited campground power.
Maintenance Tips:
- Check the sacrificial anode annually; replace every 2–3 years.
- Verify 12V wall-panel ignition and gas burner operation regularly.
- Ensure supply pump does not exceed 45 PSI.
- Seasonal checks: seals, drain plug, and connections before peak use.
The Suburban 20.3L Gas-Electric Water Heater Kit combines flexible heating, easy external servicing, and durable components, delivering reliable hot water for life on the road.
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