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Home > Cabin/ Galley/ Deck > Marine Water Heaters >

Whale Seaward Water Heater




Seaward Products is a major manufacturer of marine water heaters.  All heaters feature aluminum hold down brackets, dual wall heat exchangers, ignition protection, and your choice of marine galvanized or stainless steel exteriors. Available capacities are: 3, 6, 11, 20, and 28 gallon models, horizontal or vertical. All models are available without heat exchangers.

All Seaward water heaters are made in America by American workers. Don't be fooled... there is a difference!

Please call Factory at (616) 897-2301 for Technical Support

Click here for detailed info for the spec's and Size







Whale Seaward Water Heater Front Heat Exchanger, Stainless Steel Case, 11 Gallon, 120V, F1200
Whale Seaward Water Heater Front Heat Exchanger, 11 Gallon, 120V, F1100
Whale Seaward Water Heater Front Heat Exchanger, Stainless Steel Case, 11 Gallon, 120V, F1200

Brand New with Factory Warranty

List Price: $US 899.00
Our Price: $US 689.00

Whale Seaward Water Heater Front Heat Exchanger, 11 Gallon, 120V, F1100

Brand New with Factory Warranty

List Price: $US 789.00
Our Price: $US 559.00

Whale Seaward Water Heater Front/White Heat Exchanger, 11 Gallon, 120V, F1100W
Whale Seaward Water Heater Front Heat Exchanger, 6 Gallon, 120V, F600
Whale Seaward Water Heater Front/White Heat Exchanger, 11 Gallon, 120V, F1100W

Brand New with Factory Warranty

List Price: $US 879.00
Our Price: $US 799.00

Whale Seaward Water Heater Front Heat Exchanger, 6 Gallon, 120V, F600

Brand New with Factory Warranty

List Price: $US 616.00
Our Price: $US 509.00

Whale Seaward Water Heater Front/White Heat Exchanger, 6 Gallon, 120V, F600W
Whale Seaward Water Heater Rear Heat Exchanger, 11 Gallon, 120V, S1100
Whale Seaward Water Heater Front/White Heat Exchanger, 6 Gallon, 120V, F600W

Brand New with Factory Warranty

List Price: $US 713.00
Our Price: $US 579.00

Whale Seaward Water Heater Rear Heat Exchanger, 11 Gallon, 120V, S1100

Brand New with Factory Warranty

List Price: $US 789.00
Our Price: $US 549.00

Whale Seaward Water Heater Rear/White Heat Exchanger, 11 Gallon, 120V, S1100W
Whale Seaward Water Heater Rear Heat Exchanger, 6 Gallon, 120V, S600
Whale Seaward Water Heater Rear/White Heat Exchanger, 11 Gallon, 120V, S1100W

Brand New with Factory Warranty

List Price: $US 1,034.00
Our Price: $US 899.00

Whale Seaward Water Heater Rear Heat Exchanger, 6 Gallon, 120V, S600

Brand New with Factory Warranty

List Price: $US 614.00
Our Price: $US 499.00

Whale Seaward Water Heater Rear/White Heat Exchanger, 6 Gallon, 120V, S600W
Whale Seaward Water Heater Front Heat Exchanger, Stainless Steel, 6 Gallon, F700
Whale Seaward Water Heater Rear/White Heat Exchanger, 6 Gallon, 120V, S600W

Brand New with Factory Warranty

List Price: $US 789.00
Our Price: $US 559.00

Whale Seaward Water Heater Front Heat Exchanger, Stainless Steel, 6 Gallon, F700

Brand New with Factory Warranty

List Price: $US 730.00
Our Price: $US 589.00

Whale Seaward 6 Gallon Hot Water Heater with Rear Heat Exchanger Stainless Steel Exterior S700
Whale Seaward 11 Gal Hot Water Heater with Rear Heat Exchanger Stainless Steel, S1200
Whale Seaward 6 Gallon Hot Water Heater with Rear Heat Exchanger Stainless Steel Exterior S700

Brand New with Factory Warranty

List Price: $US 877.00
Our Price: $US 589.00

Whale Seaward 11 Gal Hot Water Heater with Rear Heat Exchanger Stainless Steel, S1200

Brand New with Factory Warranty

List Price: $US 814.00
Our Price: $US 659.00

Whale Seaward 3 Gallon Hot Water Heater White Epoxy, S360EW
Whale Seaward 6 Gallon Hot Water Heater - White Epoxy - 120V S600EW
Whale Seaward 3 Gallon Hot Water Heater White Epoxy, S360EW

Brand New with Factory Warranty

List Price: $US 836.00
Our Price: $US 679.00

Whale Seaward 6 Gallon Hot Water Heater - White Epoxy - 120V S600EW

Brand New with Factory Warranty

List Price: $US 779.00
Our Price: $US 539.00

Whale Seaward 6 Gallon Hot Water Heater - Galvanized Steel - 240V S650E
Whale Seaward 6 Gallon Hot Water Heater - Stainless Steel - 120V S700E
Whale Seaward 6 Gallon Hot Water Heater - Galvanized Steel - 240V S650E

Brand New with Factory Warranty

List Price: $US 618.00
Our Price: $US 499.00

Whale Seaward 6 Gallon Hot Water Heater - Stainless Steel - 120V S700E

Brand New with Factory Warranty

List Price: $US 689.00
Our Price: $US 589.00

Whale Seaward 6 Gallon Hot Water Heater - Stainless Steel - 240V S750E
Whale Seaward 6 Gallon Hot Water Heater with Front Heat Exchange - Galvanized Steel - 240V - 1500W, F650
Whale Seaward 6 Gallon Hot Water Heater - Stainless Steel - 240V S750E

Brand New with Factory Warranty

List Price: $US 731.00
Our Price: $US 599.00

Whale Seaward 6 Gallon Hot Water Heater with Front Heat Exchange - Galvanized Steel - 240V - 1500W, F650

Brand New with Factory Warranty

List Price: $US 749.00
Our Price: $US 519.00

Whale Seaward 6 Gallon Hot Water Heater with Front Heat Exchanger - White Epoxy - 240V - 1500W, F650w
Whale Seaward 6 Gallon Hot Water Heater with Front Heat Exchanger - Stainless Steel - 240V - 1500W, F750
Whale Seaward 6 Gallon Hot Water Heater with Front Heat Exchanger - White Epoxy - 240V - 1500W, F650w

Brand New with Factory Warranty

List Price: $US 722.00
Our Price: $US 599.00

Whale Seaward 6 Gallon Hot Water Heater with Front Heat Exchanger - Stainless Steel - 240V - 1500W, F750

Brand New with Factory Warranty

List Price: $US 879.00
Our Price: $US 609.00

Whale Seaward 3 Gallon Hot Water Heater - White Epoxy - 120V - 1500W, S300EW
Whale Seaward 3 Gallon Hot Water Heater - White Epoxy - 240V - 1500W, S350EW
Whale Seaward 3 Gallon Hot Water Heater - White Epoxy - 120V - 1500W, S300EW

Brand New with Factory Warranty

List Price: $US 784.00
Our Price: $US 549.00

Whale Seaward 3 Gallon Hot Water Heater - White Epoxy - 240V - 1500W, S350EW

Brand New with Factory Warranty

List Price: $US 804.00
Our Price: $US 569.00

Whale Seaward 3 Gallon Hot Water Heater with Side Heat Exchanger - White Epoxy - 120V - 1500W, S300W
Whale Seaward 6 Gallon Hot Water Heater with Rear Heat Exchanger - Galvanized Steel - 240V - 1500W, S650
Whale Seaward 3 Gallon Hot Water Heater with Side Heat Exchanger - White Epoxy - 120V - 1500W, S300W

Brand New with Factory Warranty

List Price: $US 799.00
Our Price: $US 559.00

Whale Seaward 6 Gallon Hot Water Heater with Rear Heat Exchanger - Galvanized Steel - 240V - 1500W, S650

Brand New with Factory Warranty

List Price: $US 712.00
Our Price: $US 509.00

Whale Seaward 6 Gallon Hot Water Heater with Rear Heat Exchanger - Stainless Steel - 240V - 1500W, S750
Whale Seaward 11 Gallon Hot Water Heater - Stainless Steel - 120V - 1500W, S1200E
Whale Seaward 6 Gallon Hot Water Heater with Rear Heat Exchanger - Stainless Steel - 240V - 1500W, S750

Brand New with Factory Warranty

List Price: $US 739.00
Our Price: $US 599.00

Whale Seaward 11 Gallon Hot Water Heater - Stainless Steel - 120V - 1500W, S1200E

Brand New with Factory Warranty

List Price: $US 811.00
Our Price: $US 659.00

Whale Seaward 11 Gallon Hot Water Heater with Front Heat Exchanger - Galvanized Steel - 240V - 1500W, F1150
Whale Seaward 11 Gallon Hot Water Heater with Front Heat Exchanger - White Epoxy - 240V - 1500W, F1150W
Whale Seaward 11 Gallon Hot Water Heater with Front Heat Exchanger - Galvanized Steel - 240V - 1500W, F1150

Brand New with Factory Warranty

List Price: $US 712.00
Our Price: $US 589.00

Whale Seaward 11 Gallon Hot Water Heater with Front Heat Exchanger - White Epoxy - 240V - 1500W, F1150W

Brand New with Factory Warranty

List Price: $US 769.00
Our Price: $US 629.00

Whale Seaward 11 Gallon Hot Water Heater with Front Heat Exchanger - Stainless Steel - 240V - 1500W, F1250
Whale Seaward 11 Gallon Hot Water Heater with Rear Heat Exchanger - Galvanized Steel - 240V - 1500W, S1150
Whale Seaward 11 Gallon Hot Water Heater with Front Heat Exchanger - Stainless Steel - 240V - 1500W, F1250

Brand New with Factory Warranty

List Price: $US 867.00
Our Price: $US 709.00

Whale Seaward 11 Gallon Hot Water Heater with Rear Heat Exchanger - Galvanized Steel - 240V - 1500W, S1150

Brand New with Factory Warranty

List Price: $US 702.00
Our Price: $US 579.00

Whale Seaward 11 Gallon Hot Water Heater with Rear Heat Exchanger - Stainless Steel - 240V - 1500W, S1250
Whale Seaward 11 Gallon Hot Water Heater - White Epoxy - 240V - 4500W, S1150EW-4500
Whale Seaward 11 Gallon Hot Water Heater with Rear Heat Exchanger - Stainless Steel - 240V - 1500W, S1250

Brand New with Factory Warranty

List Price: $US 833.00
Our Price: $US 679.00

Whale Seaward 11 Gallon Hot Water Heater - White Epoxy - 240V - 4500W, S1150EW-4500

Brand New with Factory Warranty

List Price: $US 786.00
Our Price: $US 649.00

Whale Seaward 6 Gallon Hot Water Heater - White Epoxy - 240V - 3000W, S650EW-3000
Whale Seaward 20 Gallon Hot Water Heater with Front Heat Exchanger - Stainless Steel - 240V, S1950
Whale Seaward 6 Gallon Hot Water Heater - White Epoxy - 240V - 3000W, S650EW-3000

Brand New with Factory Warranty

List Price: $US 814.00
Our Price: $US 569.00

Whale Seaward 20 Gallon Hot Water Heater with Front Heat Exchanger - Stainless Steel - 240V, S1950

Brand New with Factory Warranty

List Price: $US 1,679.00
Our Price: $US 1,149.00


Frequently Asked Questions

 
 
Can engine coolant lines be used to heat the water?

Model depending, coolant and/or mains voltage can be used to heat the water.

 
 
Is a model able to heat off a 12V supply available?

Yes, model S360EW.

 
 
Are these heaters available in Europe?

Only the 12V model, S360Ew, is available to buy in Europe/UK.

 
 
Should I fit an anode?

If the water supply has high levels of salinity, a magnesium anode should be fitted.

 
 
What size circuit-breaker should be used?

120V requires 15A circuit breaker, 240V requires 10A dual breaker.

 
 
Do Whale manufacture a thermostatic mixing valve?

 

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