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Marine Hot Water Heaters

We've put together a fine selection of marine hot water heaters for your boat hot water system, and we're selling them at tremendous discounts lower than you're likely to find anywhere. Choose from units made by top manufacturers, including Whale Marine, Raritan and Quick. Our lineup of Raritan water heaters includes numerous 120-volt models, each available either with or without heat exchangers.

You'll find we carry a complete line of Quick Nautical Boilers, available in seven various capacities and rated at either 500w or 1200w, depending on the unit. All are equipped with heat exchangers. Quick also offers several 110-volt compact water heaters. Our large selection of Whale Marine Seaward water heaters includes dozens of marine water heaters with heat exchangers or without. Choose from epoxy, galvanized or stainless steel.

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Whale Seaward 6 Gallon Hot Water Heater W/Rear Heat Exchanger Galvanized Steel Whale Seaward 6 Gallon Hot Water Heater W/Rear Heat Exchanger - Galvanized Steel - 120v - 1500w
List Price: $429.23
Our Price: $286.59
You save $142.64!
7 in stock!
(10)
Whale Seaward 11 Gallon Hot Water Heater W/Rear Heat Exchanger Whale Seaward 11 Gallon Hot Water Heater W/Rear Heat Exchanger - Galvanized Steel - 120v - 1500w
List Price: $476.57
Our Price: $317.32
You save $159.25!
6 in stock!
(2)
Whale Seaward 6 Gal Hot Water Heater W/Front Heat Exchanger Galvanized  Exterior Whale Seaward 6 Gallon Hot Water Heater W/Front Heat Exchanger - Galvanized Steel - 120v - 1500w
List Price: $430.17
Our Price: $287.20
You save $142.97!
3 in stock!
(4)
Whale Seaward 11 Gallon Hot Water Heater W/Front Heat Exchanger Whale Seaward 11 Gallon Hot Water Heater W/Front Heat Exchanger - Galvanized Steel - 120v - 1500w
List Price: $483.73
Our Price: $321.96
You save $161.77!
9 in stock!
(8)
Whale Seaward Magnesium Anode Whale Seaward Magnesium Anode
Our Price: $25.66
4 in stock!
(1)
Whale Seaward 6 Gallon Hot Water Heater W/Front Heat Exchanger Stainless Steel Exterior Whale Seaward 6 Gallon Hot Water Heater W/Front Heat Exchanger - Stainless Steel - 120v - 1500w
List Price: $509.79
Our Price: $338.87
You save $170.92!
5 in stock!
(2)
Whale Seaward 6 Gallon Hot Water Heater W/Rear Heat Exchanger Stainless Steel Exterior Whale Seaward 6 Gallon Hot Water Heater W/Rear Heat Exchanger - Stainless Steel - 120v - 1500w
List Price: $507.46
Our Price: $337.36
You save $170.10!
5 in stock!
(3)
Whale Seaward 11 Gal Hot Water Heater w/Rear Heat Exchanger Stainless Steel Whale Seaward 11 Gallon Hot Water Heater W/Rear Heat Exchanger - Stainless Steel - 120v - 1500w
List Price: $568.31
Our Price: $376.84
You save $191.47!
6 in stock!
(2)
Whale Seaward 6 Gallon Hot Water Heater W/Front Heat Exchager White Whale Seaward 6 Gallon Hot Water Heater W/Front Heat Exchager - White Epoxy - 120v - 1500w
List Price: $498.20
Our Price: $331.34
You save $166.86!
7 in stock!
(4)
Whale Seaward 6 Galllon Hot Water Heater W/Rear Heat Exchanger Whale Seaward 6 Gallon Hot Water Heater W/Rear Heat Exchanger - White Epoxy - 120v - 1500w
List Price: $480.37
Our Price: $319.78
You save $160.59!
3 in stock!
Whale Seaward 11 Galllon Hot Water Heater W/Front Heat Exchanger White Epoxy Finish Whale Seaward 11 Gallon Hot Water Heater W/Front Heat Exchanger - White Epoxy - 120v - 1500w
List Price: $532.94
Our Price: $353.90
You save $179.04!
7 in stock!
(1)
Whale Seaward 11 Gallon Hot Water Heater - Stainless Steel - 120V Whale Seaward 11 Gallon Hot Water Heater - Stainless Steel - 120v - 1500w
List Price: $566.37
Our Price: $375.59
You save $190.78!
3 in stock!
Whale Seaward 6 Gallon Hot Water Heater - White Epoxy - 120V Whale Seaward 6 Gallon Hot Water Heater - White Epoxy - 120v - 1500w
List Price: $464.21
Our Price: $309.28
You save $154.93!
Out of Stock
(1)
Raritan 12/20 Gallon Water Heater Magnesium Anode Raritan Magnesium Anode F/12 & 20-Gallon Water Heater
List Price: $60.00
Our Price: $51.20
You save $8.80!
5 in stock!
(1)
Whale Seaward 11 Gallon Hot Water Heater W/Rear Heat Exchanger White Epoxy Whale Seaward 11 Gallon Hot Water Heater W/Rear Heat Exchanger - White Epoxy - 120v - 1500w
List Price: $554.36
Our Price: $367.79
You save $186.57!
7 in stock!
Whale Seaward 6 Gallon Hot Water Heater w/Front Heat Exchange - Galvanized Steel - 240V Whale Seaward 6 Gallon Hot Water Heater W/Front Heat Exchange - Galvanized Steel - 240v - 1500w
List Price: $443.87
Our Price: $296.09
You save $147.78!
7 in stock!
Whale Seaward 3 Gallon Hot Water Heater w/Side Heat Exchanger - White Epoxy - 120V Whale Seaward 3 Gallon Hot Water Heater W/Side Heat Exchanger - White Epoxy - 120v - 1500w
List Price: $485.47
Our Price: $323.09
You save $162.38!
6 in stock!
Whale Seaward Thermostatic Mixer Valve Whale Seaward Thermostatic Mixer Valve
List Price: $161.00
Our Price: $111.31
You save $49.69!
6 in stock!
Raritan 6 Gal Water Heater Magnesium Anode - Boat Hot water Heaters Raritan Magnesium Anode F/6-Gallon Water Heater
List Price: $60.00
Our Price: $51.20
You save $8.80!
5 in stock!
Whale Seaward 11 Gallon Hot Heater W/Front Heat Exchager Stainless SteelExterior Whale Seaward 11 Gallon Hot Water Heater W/Front Heat Exchanger - Stainless Steel - 120v - 1500w
List Price: $592.15
Our Price: $392.32
You save $199.83!
4 in stock!
(1)
Whale 3 Gallon Hot Water Heater White Epoxy - Boat Hot water Heaters Whale 3 Gallon Hot Water Heater - White Epoxy - 120v - 1500w
List Price: $584.09
Our Price: $387.09
You save $197.00!
6 in stock!
(1)
Whale Seaward 11 Gallon Hot Water Heater w/Rear Heat Exchanger - Galvanized Steel - 240V Whale Seaward 11 Gallon Hot Water Heater W/Rear Heat Exchanger - Galvanized Steel - 240v - 1500w
List Price: $490.26
Our Price: $326.20
You save $164.06!
3 in stock!
Whale Seaward 3 Gallon Hot Water Heater - White Epoxy - 120V Whale Seaward 3 Gallon Hot Water Heater - White Epoxy - 120v - 1500w
List Price: $465.35
Our Price: $310.03
You save $155.32!
2 in stock!
Whale Seaward 11 Gallon Hot Water Heater w/Front Heat Exchanger - White Epoxy - 240V Whale Seaward 11 Gallon Hot Water Heater W/Front Heat Exchanger - White Epoxy - 240v - 1500w
List Price: $537.03
Our Price: $356.54
You save $180.49!
4 in stock!
Whale Seaward 11 Gallon Hot Water Heater w/Rear Heat Exchanger - Stainless Steel - 240V Whale Seaward 11 Gallon Hot Water Heater W/Rear Heat Exchanger - Stainless Steel - 240v - 1500w
List Price: $582.01
Our Price: $385.72
You save $196.29!
2 in stock!
Whale Seaward 6 Gallon Hot Water Heater - Galvanized Steel - 240V Whale Seaward 6 Gallon Hot Water Heater - Galvanized Steel - 240v - 1500w
List Price: $431.51
Our Price: $288.07
You save $143.44!
2 in stock!
Whale Seaward 6 Gallon Hot Water Heater - Stainless Steel - 120V Whale Seaward 6 Gallon Hot Water Heater - Stainless Steel - 120v - 1500w
List Price: $496.95
Our Price: $330.54
You save $166.41!
3 in stock!