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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 Brand New with Factory Warranty List Price: $US 899.00 Our Price: $US 679.00		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 Brand New with Factory Warranty List Price: $US 879.00 Our Price: $US 609.00		Whale Seaward Water Heater Front Heat Exchanger, 6 Gallon, 120V, F600 Brand New with Factory Warranty List Price: $US 616.00 Our Price: $US 489.00



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 569.00		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 Brand New with Factory Warranty List Price: $US 1,034.00 Our Price: $US 649.00		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 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 579.00



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 579.00		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 649.00



Whale Seaward 3 Gallon Hot Water Heater White Epoxy, S360EW Brand New with Factory Warranty List Price: $US 836.00 Our Price: $US 669.00		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 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 579.00



Whale Seaward 6 Gallon Hot Water Heater - Stainless Steel - 240V S750E Brand New with Factory Warranty List Price: $US 731.00 Our Price: $US 589.00		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 Brand New with Factory Warranty List Price: $US 722.00 Our Price: $US 589.00		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 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 559.00



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 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 649.00



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 579.00		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 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 569.00



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 669.00		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 Brand New with Factory Warranty List Price: $US 814.00 Our Price: $US 559.00		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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