Raritan 6 Gallon Marine Water Heater w/Heat Exchanger, 120 V

SKU: RAR 170611

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  • Regular price $1,436.50
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Raritan 6 Gallon Marine Water Heater w/Heat Exchanger, 120 V

A marine water heater is simply a small, insulated tank downstream of the pump. You must have a pressurized water system to operate a water heater. The pump draws water from the storage tank(s) and fills the water heater tank. Inside the water heater is an electrical heating element and usually a coiled tube called a heat exchanger. When AC power is available, the electrical element (controlled by a thermostat) heats the water. Away from the dock, the hot engine coolant is routed through the coiled tube to heat the water in the tank when the engine is running.

Water heaters have four threaded ports. The tank inlet connects via a tee-connector to the outlet hose from the pump. A check valve is required in this line or in the heater to prevent hot water from migrating back toward the pump. The outlet connection supplies heated water to the hot side of all faucets, also using tee-connectors. The other two ports are for the heat exchanger connection, which varies depending on engine installation. Use only metal fittings to plumb a water heater, never plastic. If a pressure-release valve isn’t integral, the heater will have a fifth port for this essential component.


  • Orientation: Vertical
  • Heat Exchanger Position: Front
  • Tank Capacity: 6 Gallons
  • Tank Material: Glass lined steel
  • Exterior Jacket: White polymer
  • Power: 120 Volt AC / 1250 Watts, Draw: 10 Amps
  • PSI Rating: 150 PSI

General Features:

  • Simple installation – retrofits to most onboard pressure systems
  • Proven long-life design
  • Glass-lined steel tank for long life and improved efficiency
  • Environmentally friendly, solid CFC-free foam insulation keeps water hotter longer than with fiberglass insulation
  • Polymer exterior jacket resists corrosion from dampness
  • Ignition protected, adjustable thermostat
  • Replaceable magnesium anode to protect tank and neutralize acids in tank water
  • Each unit is assembled by hand and individually tested
  • Tank is covered by 5-year limited warranty, entire heater is covered 2-year limited warranty

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