Seaward Marine Water Heater - 20 Gallon
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Seaward Marine Water Heater - 20 Gallon

  • Capacity: 20 Gal., Orientation: Horizontal, Heat Exchanger: Front
  • Select Voltage / 1500 Watts, Tank Material: Aluminum
  • Dimensions: 16" W x 16" H x 32" D, Exterior: White Epoxy
  • Item #: 
    Seaward By Whale
    Model #: 
    Multiple Models Available
    Reg. Price:     From: $624.99 To: $634.99
    Sale Price:     From: $499.99 To: $507.99
    499.99 507.99
    Please enter quantity below.


    Model #
    Shipping Weight
    120 Volt AC
      53.63 Lbs.
    Reg. Price: $624.99
    Sale Price: $499.99
    240 Volt AC
      58.45 Lbs.
    Reg. Price: $634.99
    Sale Price: $507.99
    Click the "More Info" button above for specific information about that product.

    Shipping weight reflects calculated Dimensional Weight and is not actual product weight - see here for details.

    Available Models

    Model: HF2000W - Power: 120 Volt AC
    Model: HF2050W - Power: 240 Volt AC

    Seaward Marine Water Heaters


    • Available in multiple configurations to suit your installation requirements
      • Combination electric / heat exchanger or electric-only models
      • Versions available for 120 and 240 Volt AC systems
      • Wide range of tank capacities: 3, 6, 11, 20 or 28 gallons
      • Horizontal or vertical mounting
    • Exterior jackets available in marine galvanized steel, stainless steel or white epoxy-coated aluminum
    • Robust manufacturing
      • Mounting brackets welded to inner tank
      • Double-wall heat exchangers
      • Large 3/4" drain valve
    • Easy-to-use safety controls
      • Integrated pressure relief valve
      • Temperature and pressure drain tube included
    • Magnesium anodes sold separately (recommended for longer tank life)
    • Ignition protected


    • Orientation: Horizontal
    • Heat Exchanger Position: Front
    • Tank Capacity: 20 Gallons
    • Tank Material: Aluminum
    • Exterior Jacket: White epoxy coated aluminum
    • Power: Specify 120 or 240 Volt AC / 1500 Watts
    • Circuit Breaker: 15 Amp (120 Volt AC) or 10 Amp dual breaker (240 Volt AC)
    • PSI Rating: 150 PSI
    • Dimensions: 16" W x 16" H x 32" D
    • Meets or exceeds all ABYC, CE and UL standards

    For further details including installation and operating instructions see Owner's Manual for this product

    WARNING: This product MAY expose you to chemicals, which are known to the State of California to cause cancer, birth defects and/or other reproductive harm. For more information go to


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