Defender Home Page
Phone: 800-628-8225 Fax: 800-654-1616 Int'l.: 860-701-3400 Email: Contact Us
Shipping Info
no sales tax Defender Home Page
Your Cart


View Cart View Shopping Cart
Check My Order(s)
Track My Package(s)
Metric/Inch
Conversion Chart
Categories
Shopping Areas
Information
Boats & Motors
 Defender Seal
 
Seaward Marine Water Heater - 20 Gallon Seaward By Whale Multiple Voltage Choices Available Available Models
Model: S1800 - Power: 120 Volt AC
Model: S1850 - Power: 240 Volt AC
Seaward Marine Water Heaters
Features:
Available in multiple
484.99
Seaward Marine Water Heater - 20 Gallon Seaward By Whale Multiple Voltage Choices Available Available Models
Model: HF2000 - Power: 120 Volt AC
Model: HF2050 - Power: 240 Volt AC
Seaward Marine Water Heaters
Features:
Available in multiple
474.99 484.99
Seaward Marine Water Heater - 20 Gallon Seaward By Whale S1800 Scratch & Dent: Customer return. Two mounting feet were broken off in transit. There are still two mounting feet
Seaward Marine Water Heaters
Features:
Available in multiple
320.00
Seaward Marine Water Heater - 20 Gallon Seaward By Whale S1800 Display Model: Original Packaging is missing - Re-boxed - Complete - Full Warranty
Seaward Marine Water Heaters
Features:
Available in multiple configurations to suit your
385.00
Seaward Marine Water Heater - 20 Gallon Seaward By Whale Multiple Voltage Choices Available Available Models
Model: H2050 - Power: 240 Volt AC
Seaward Marine Water Heaters
Features:
Available in multiple configurations to suit your installation requirements
559.99
Seaward Marine Water Heater - 20 Gallon Seaward By Whale Multiple Voltage Choices Available Available Models
Model: S1900 - Power: 120 Volt AC
Model: S1950 - Power: 240 Volt AC
Seaward Marine Water Heaters
Features:
Available in multiple
634.99 649.99
Seaward Marine Water Heater - 20 Gallon Seaward By Whale Multiple Voltage Choices Available Available Models
Model: HF2200 - Power: 120 Volt AC
Model: HF2250 - Power: 240 Volt AC
Seaward Marine Water Heaters
Features:
Available in multiple
559.99 584.99
Seaward Marine Water Heater - 20 Gallon Seaward By Whale H2250E Seaward Marine Water Heaters
Features:
Available in multiple configurations to suit your installation requirements

Combination electric / heat exchanger or electric-only
554.99
Seaward Marine Water Heater - 20 Gallon Seaward By Whale Multiple Voltage Choices Available Available Models
Model: H2200 - Power: 120 Volt AC
Model: H2250 - Power: 240 Volt AC
Seaward Marine Water Heaters
Features:
Available in multiple configurations to
559.99 574.99
Seaward Marine Water Heater - 20 Gallon Seaward By Whale Multiple Voltage Choices Available Available Models
Model: HF2000W - Power: 120 Volt AC
Model: HF2050W - Power: 240 Volt AC
Seaward Marine Water Heaters
Features:
Available in multiple
654.99 674.99
Seaward Marine Water Heater - 20 Gallon Seaward By Whale Multiple Voltage Choices Available Available Models
Model: H2050W - Power: 240 Volt AC
Seaward Marine Water Heaters
Features:
Available in multiple configurations to suit your installation requirements
554.99
Seaward Marine Water Heater - 20 Gallon Seaward By Whale H2050EW Seaward Marine Water Heaters
Features:
Available in multiple configurations to suit your installation requirements

Combination electric / heat exchanger or electric-only
534.99
Kuuma Marine Water Heater - 20 Gallon Kuuma 11870 Kuuma Marine Water Heaters
Features:
Available in 5, 6, 11, 20 and 26 gallon models
Corrosion resistant, TIG-welded aluminum inner tanks
Ignition protected controls
459.99
Isotemp Basic 75 Marine Water Heater - 20 Gallon Isotemp Multiple Voltage Choices Available Available Models:
Model: 607521B000003 - Power: 115 Volt AC
Model: 607531B000003 - Power: 230 Volt AC
Isotemp Water Heaters General Features:
All Isotemp water heaters use
899.99 924.99
Isotemp Basic 75 TCT Marine Water Heater - 20 Gallon Isotemp Multiple Voltage Choices Available Available Models
Model: 607523BD00003 - Power: 115 Volt AC
Model: 607531BD00003 - Power: 230 Volt AC
Isotemp Water Heaters General Features:
All Isotemp water heaters use
1029.95 1064.95
Raritan 1700 Series Marine Water Heater - 20 Gallon Raritan Multiple Voltage Choices Available Raritan 1700 Series Marine Water Heaters General Features:
Available in 6, 12 and 20 gallon models – with or without engine heat exchangers
Versions available for 120 and 240 Volt
999.99
Raritan 1700 Series Marine Water Heater - 20 Gallon Raritan Multiple Voltage Choices Available Raritan 1700 Series Marine Water Heaters General Features:
Available in 6, 12 and 20 gallon models – with or without engine heat exchangers
Versions available for 120 and 240 Volt
859.99
 Sort by Brand    Sort By Title   Description    Sort By Price
 
Seaward By Whale
  • Seaward Marine Water Heater - 20 Gallon Seaward Marine Water Heater - 20 Gallon
    Seaward Marine Water Heater - 20 Gallon
 
Brand:
Seaward By Whale
 
Seaward Marine Water Heater - 20 Gallon
Seaward Marine Water Heater - 20 Gallon
Item # : 503260

  • Capacity: 20 Gal., Orientation: Vertical, Heat Exchanger: Front
  • Select Voltage / 1500 Watts, Tank Material: Aluminum
  • Dimensions: 20.25" W x 20" H x 27" D, Exterior: Galvanized
  • Model Number: Multiple Voltage Choices Available
      Available Models
    Model: S1800 - Power: 120 Volt AC
    Model: S1850 - Power: 240 Volt AC
    Seaward Marine Water Heaters
    Features:
    Available in multiple... more...
       
    $484.99
    List Price:
    $723.25

    Our Price:
    $484.99



     
     
    Seaward By Whale
    • Seaward Marine Water Heater - 20 Gallon Seaward Marine Water Heater - 20 Gallon
      Seaward Marine Water Heater - 20 Gallon
     
    Brand:
    Seaward By Whale
     
    Seaward Marine Water Heater - 20 Gallon
    Seaward Marine Water Heater - 20 Gallon
    Item # : 503266

  • 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: Galvanized Steel
  • Model Number: Multiple Voltage Choices Available
      Available Models
    Model: HF2000 - Power: 120 Volt AC
    Model: HF2050 - Power: 240 Volt AC
    Seaward Marine Water Heaters
    Features:
    Available in multiple... more...
       
    $474.99
     
    From: $474.99
    To: $484.99



     
     
    Seaward By Whale
    • Seaward Marine Water Heater - 20 Gallon Seaward Marine Water Heater - 20 Gallon
      Seaward Marine Water Heater - 20 Gallon
     
    Brand:
    Seaward By Whale
     
    Seaward Marine Water Heater - 20 Gallon
    Seaward Marine Water Heater - 20 Gallon
    Item # : 503260SWH120D2

    Scratch & Dent
  • Capacity: 20 Gal., Orientation: Vertical, Heat Exchanger: Front
  • Power: 120 Volt AC / 1500 Watts, Tank Material: Aluminum
  • Dimensions: 20.25" W x 20" H x 27" D, Exterior: Galvanized
  • Model Number: S1800
      Scratch & Dent: Customer return. Two mounting feet were broken off in transit. There are still two mounting feet
    Seaward Marine Water Heaters
    Features:
    Available in multiple... more...
       
    $320.0
    List Price:
    $702.27

    Scratch Price:
    $320.00



     
     
    Seaward By Whale
    • Seaward Marine Water Heater - 20 Gallon Seaward Marine Water Heater - 20 Gallon
      Seaward Marine Water Heater - 20 Gallon
     
    Brand:
    Seaward By Whale
     
    Seaward Marine Water Heater - 20 Gallon
    Seaward Marine Water Heater - 20 Gallon
    Item # : 503260SWH120D1

    Display Model
  • Capacity: 20 Gal., Orientation: Vertical, Heat Exchanger: Front
  • Power: 120 Volt AC / 1500 Watts, Tank Material: Aluminum
  • Dimensions: 20.25" W x 20" H x 27" D, Exterior: Galvanized
  • Model Number: S1800
      Display Model: Original Packaging is missing - Re-boxed - Complete - Full Warranty
    Seaward Marine Water Heaters
    Features:
    Available in multiple configurations to suit your ... more...
       
    $385.0
    List Price:
    $702.27

    Display Model:
    $385.00



     
     
    Seaward By Whale
    • Seaward Marine Water Heater - 20 Gallon Seaward Marine Water Heater - 20 Gallon
      Seaward Marine Water Heater - 20 Gallon
     
    Brand:
    Seaward By Whale
     
    Seaward Marine Water Heater - 20 Gallon
    Seaward Marine Water Heater - 20 Gallon
    Item # : 503263

  • Capacity: 20 Gal., Orientation: Horizontal, Heat Exchanger: Rear
  • Power: 240 Volt AC / 1500 Watts, Tank Material: Aluminum
  • Dimensions: 16" W x 16" H x 32" D, Exterior: Galvanized Steel
  • Model Number: Multiple Voltage Choices Available
      Available Models
    Model: H2050 - Power: 240 Volt AC
    Seaward Marine Water Heaters
    Features:
    Available in multiple configurations to suit your installation requirements... more...
       
    $559.99
    List Price:
    $806.00

    Our Price:
    $559.99



     
     
    Seaward By Whale
    • Seaward Marine Water Heater - 20 Gallon Seaward Marine Water Heater - 20 Gallon
      Seaward Marine Water Heater - 20 Gallon
     
    Brand:
    Seaward By Whale
     
    Seaward Marine Water Heater - 20 Gallon
    Seaward Marine Water Heater - 20 Gallon
    Item # : 503262

  • Capacity: 20 Gal., Orientation: Vertical, Heat Exchanger: Front
  • Select Voltage / 1500 Watts, Tank Material: Aluminum
  • Dimensions: 20.25" W x 20.25" D x 27" H, Exterior: Stainless
  • Model Number: Multiple Voltage Choices Available
      Available Models
    Model: S1900 - Power: 120 Volt AC
    Model: S1950 - Power: 240 Volt AC
    Seaward Marine Water Heaters
    Features:
    Available in multiple... more...
       
    $634.99
     
    From: $634.99
    To: $649.99



     
     
    Seaward By Whale
    • Seaward Marine Water Heater - 20 Gallon Seaward Marine Water Heater - 20 Gallon
      Seaward Marine Water Heater - 20 Gallon
     
    Brand:
    Seaward By Whale
     
    Seaward Marine Water Heater - 20 Gallon
    Seaward Marine Water Heater - 20 Gallon
    Item # : 503268

  • 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: Stainless Steel
  • Model Number: Multiple Voltage Choices Available
      Available Models
    Model: HF2200 - Power: 120 Volt AC
    Model: HF2250 - Power: 240 Volt AC
    Seaward Marine Water Heaters
    Features:
    Available in multiple... more...
       
    $559.99
     
    From: $559.99
    To: $584.99



     
     
    Seaward By Whale
    • Seaward Marine Water Heater - 20 Gallon Seaward Marine Water Heater - 20 Gallon
      Seaward Marine Water Heater - 20 Gallon
     
    Brand:
    Seaward By Whale
     
    Seaward Marine Water Heater - 20 Gallon
    Seaward Marine Water Heater - 20 Gallon
    Item # : 502579

  • Capacity: 20 Gal., Orientation: Horizontal, Heat Exchanger: None (Electric)
  • Power: 240 Volt AC / 1500 Watts, Tank Material: Aluminum
  • Dimensions: 16" W x 16" H x 32" D, Exterior: Stainless Steel
  • Model Number: H2250E
      Seaward Marine Water Heaters
    Features:
    Available in multiple configurations to suit your installation requirements

    Combination electric / heat exchanger or electric-only... more...
       
    $554.99
    List Price:
    $771.12

    Our Price:
    $554.99



     
     
    Seaward By Whale
    • Seaward Marine Water Heater - 20 Gallon Seaward Marine Water Heater - 20 Gallon
      Seaward Marine Water Heater - 20 Gallon
     
    Brand:
    Seaward By Whale
     
    Seaward Marine Water Heater - 20 Gallon
    Seaward Marine Water Heater - 20 Gallon
    Item # : 503265

  • Capacity: 20 Gal., Orientation: Horizontal, Heat Exchanger: Rear
  • Select Voltage / 1500 Watts, Tank Material: Aluminum
  • Dimensions: 16" W x 16" H x 32" D, Exterior: Stainless Steel
  • Model Number: Multiple Voltage Choices Available
      Available Models
    Model: H2200 - Power: 120 Volt AC
    Model: H2250 - Power: 240 Volt AC
    Seaward Marine Water Heaters
    Features:
    Available in multiple configurations to... more...
       
    $559.99
     
    From: $559.99
    To: $574.99



     
     
    Seaward By Whale
    • Seaward Marine Water Heater - 20 Gallon Seaward Marine Water Heater - 20 Gallon
      Seaward Marine Water Heater - 20 Gallon
     
    Brand:
    Seaward By Whale
     
    Seaward Marine Water Heater - 20 Gallon
    Seaward Marine Water Heater - 20 Gallon
    Item # : 503267

  • 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
  • Model Number: Multiple Voltage Choices Available
      Available Models
    Model: HF2000W - Power: 120 Volt AC
    Model: HF2050W - Power: 240 Volt AC
    Seaward Marine Water Heaters
    Features:
    Available in multiple... more...
       
    $654.99
     
    From: $654.99
    To: $674.99



     
     
    Seaward By Whale
    • Seaward Marine Water Heater - 20 Gallon Seaward Marine Water Heater - 20 Gallon
      Seaward Marine Water Heater - 20 Gallon
     
    Brand:
    Seaward By Whale
     
    Seaward Marine Water Heater - 20 Gallon
    Seaward Marine Water Heater - 20 Gallon
    Item # : 503264

  • Capacity: 20 Gal., Orientation: Horizontal, Heat Exchanger: Rear
  • Select Voltage / 1500 Watts, Tank Material: Aluminum
  • Dimensions: 16" W x 16" H x 32" D, Exterior: White Epoxy
  • Model Number: Multiple Voltage Choices Available
      Available Models
    Model: H2050W - Power: 240 Volt AC
    Seaward Marine Water Heaters
    Features:
    Available in multiple configurations to suit your installation requirements... more...
       
    $554.99
    List Price:
    $845.75

    Our Price:
    $554.99



     
     
    Seaward By Whale
    • Seaward Marine Water Heater - 20 Gallon Seaward Marine Water Heater - 20 Gallon
      Seaward Marine Water Heater - 20 Gallon
     
    Brand:
    Seaward By Whale
     
    Seaward Marine Water Heater - 20 Gallon
    Seaward Marine Water Heater - 20 Gallon
    Item # : 501253

  • Capacity: 20 Gal., Orientation: Horizontal, Heat Exchanger: None (Electric)
  • Power: 240 Volt AC / 1500 Watts, Tank Material: Aluminum
  • Dimensions: 16" W x 16" H x 32" D, Exterior: White Epoxy
  • Model Number: H2050EW
      Seaward Marine Water Heaters
    Features:
    Available in multiple configurations to suit your installation requirements

    Combination electric / heat exchanger or electric-only... more...
       
    $534.99
    List Price:
    $740.78

    Our Price:
    $534.99



     
     
    Kuuma
    • Kuuma Marine Water Heater - 20 Gallon Kuuma Marine Water Heater - 20 Gallon
      Kuuma Marine Water Heater - 20 Gallon
     
    Brand:
    Kuuma
     
    Kuuma Marine Water Heater - 20 Gallon
    Kuuma Marine Water Heater - 20 Gallon
    Item # : 502577

    New Lower Price!
  • Capacity: 20 Gal., Side Mount, Orientation: Vertical, Heat Exchanger: Front
  • Power: 120 Volt AC / 1500 Watts, Tank Material: Aluminum
  • Dimensions: 18.875" W x 29.75" H x 20.75" D, Exterior: Aluminum
  • Model Number: 11870
      Kuuma Marine Water Heaters
    Features:
    Available in 5, 6, 11, 20 and 26 gallon models
    Corrosion resistant, TIG-welded aluminum inner tanks
    Ignition protected controls... more...
       
    $459.99
    List Price:
    $707.21

    Our Price:
    $459.99



     
     
    Isotemp
    • Isotemp Basic 75 Marine Water Heater - 20 Gallon Isotemp Basic 75 Marine Water Heater - 20 Gallon
      Isotemp Basic 75 Marine Water Heater - 20 Gallon
     
    Brand:
    Isotemp
     
    Isotemp Basic 75 Marine Water Heater - 20 Gallon
    Isotemp Basic 75 Marine Water Heater - 20 Gallon
    Item # : 502693

  • Capacity: 20 Gal., Orientation: Horizontal or Vertical, Heat Exchanger: Front
  • Select Voltage / 750 Watts, Tank Material: Stainless Steel
  • Dimensions: 42.2" L x 15.5" OD, Exterior: Stainless Steel
  • Model Number: Multiple Voltage Choices Available
    This product ships truck
      Available Models:
    Model: 607521B000003 - Power: 115 Volt AC
    Model: 607531B000003 - Power: 230 Volt AC
    Isotemp Water Heaters General Features:
    All Isotemp water heaters use... more...
       
    $899.99
     
    From: $899.99
    To: $924.99



     
     
    Isotemp
    • Isotemp Basic 75 TCT Marine Water Heater - 20 Gallon Isotemp Basic 75 TCT Marine Water Heater - 20 Gallon
      Isotemp Basic 75 TCT Marine Water Heater - 20 Gallon
     
    Brand:
    Isotemp
     
    Isotemp Basic 75 TCT Marine Water Heater - 20 Gallon
    Isotemp Basic 75 TCT Marine Water Heater - 20 Gallon
    Item # : 502694

  • Capacity: 20 Gal., Orientation: Horizontal or Vertical, Heat Exchanger: Front
  • Select Voltage / 750 Watts, Tank Material: Stainless Steel, Dual Exchanger
  • Dimensions: 41" L x 16" OD, Exterior: Stainless Steel
  • Model Number: Multiple Voltage Choices Available
    This product ships truck
      Available Models
    Model: 607523BD00003 - Power: 115 Volt AC
    Model: 607531BD00003 - Power: 230 Volt AC
    Isotemp Water Heaters General Features:
    All Isotemp water heaters use... more...
       
    $1029.95
     
    From: $1029.95
    To: $1064.95



     
     
    Raritan
    • Raritan 1700 Series Marine Water Heater - 20 Gallon Raritan 1700 Series Marine Water Heater - 20 Gallon
      Raritan 1700 Series Marine Water Heater - 20 Gallon
     
    Brand:
    Raritan
     
    Raritan 1700 Series Marine Water Heater - 20 Gallon
    Raritan 1700 Series Marine Water Heater - 20 Gallon
    Item # : 503456

  • Capacity: 20 Gal., Orientation: Vertical, Heat Exchanger: Front
  • Select Power/Watts, Tank Material: Glass-Lined Steel
  • Dimensions: 24.25" H x 18.75" OD, Exterior: White Polymer
  • Model Number: Multiple Voltage Choices Available
      Raritan 1700 Series Marine Water Heaters General Features:
    Available in 6, 12 and 20 gallon models – with or without engine heat exchangers
    Versions available for 120 and 240 Volt... more...
       
    $999.99
    List Price:
    $1,370.00

    Our Price:
    $999.99



     
     
    Raritan
    • Raritan 1700 Series Marine Water Heater - 20 Gallon Raritan 1700 Series Marine Water Heater - 20 Gallon
      Raritan 1700 Series Marine Water Heater - 20 Gallon
     
    Brand:
    Raritan
     
    Raritan 1700 Series Marine Water Heater - 20 Gallon
    Raritan 1700 Series Marine Water Heater - 20 Gallon
    Item # : 503455

  • Capacity: 20 Gal., Orientation: Vertical, Heat Exchanger: None
  • Select Power/Watts, Tank Material: Glass-Lined Steel
  • Dimensions: 24.25" H x 18.75" OD, Exterior: White Polymer
  • Model Number: Multiple Voltage Choices Available
      Raritan 1700 Series Marine Water Heaters General Features:
    Available in 6, 12 and 20 gallon models – with or without engine heat exchangers
    Versions available for 120 and 240 Volt... more...
       
    $859.99
    List Price:
    $1,200.00

    Our Price:
    $859.99