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Marine Hot Water Heaters and Parts

29 products

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Atwood 90037 ECO Thermostat Switch
Atwood 96180 6 Gal Gas / Electric Water Heater
Save $8
Norcold 621702 AC Heating Element
Thetford-Norcold Norcold 621702 AC Heating Element
Sale price$51.99 Regular price$59.99
Save $46.98
Attwood Whale Seaward Products F600 Water Heater 6 Gallon Front Exchanger
Save $284.78
Attwood Whale H2850ES-3000 Water Heater Electric Only
Attwood Attwood Whale H2850ES-3000 Water Heater Electric Only
Sale price$1,215.21 Regular price$1,499.99
Save $14.02
Whale S300W 3 Gallon 120 Volt Marine Water Heater with Heat Exchanger
Save $126.68
Johnson Pump AquaH 56-47455-02 Water Heater 120V
Johnson Pump Johnson Pump AquaH 56-47455-02 Water Heater 120V
Sale price$323.31 Regular price$449.99
Save $182
Attwood Seaward F1100 Marine Electric Water Heater with Front Heat Exchanger
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Whale S360EW 3 Gallon 12 Volt Marine Water Heater
Attwood Whale S360EW 3 Gallon 12 Volt Marine Water Heater
Sale price$599.39 Regular price$599.99
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Scandvik 80001 Hot Waves Marine Water Heater With Heat Exchanger
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Johnson Pump AquaH 56-47457-02 Water Heater 11 Gallon 120V
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Attwood Whale F750 Seaward Marine Water Heater 6 Gallon
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Atwood 92058 Rocker Switch with 9" Wire 125V AC - 16 Amp
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Attwood Whale H2850ES-4500 28 Gal Water Heater Electric Only
Attwood Attwood Whale H2850ES-4500 28 Gal Water Heater Electric Only
Sale price$1,196.78 Regular price$1,379.99
Save $2.60
Whale S600W Whale Water Heater, 6 Gallon Capacity
Attwood Whale S600W Whale Water Heater, 6 Gallon Capacity
Sale price$497.39 Regular price$499.99
Save $112.50
Scandvik 80000 Hot Waves Marine Water Heater
Scandvik Scandvik 80000 Hot Waves Marine Water Heater
Sale price$487.49 Regular price$599.99
Save $59.59
Attwood Whale S350EW 3 Gallon Hot Water Heater White Epoxy 240V 1500W
Save $4.70
Attwood Whale S1200 11 Gal Hot Water Heater W/Rear Heat Exchanger

Discover Marine Hot Water Heaters, Parts and More at Boat & RV

Think you can't enjoy the comfort and convenience of warm water when out on your boat? Think again. At Boat & RV, we carry a massive selection of boat appliances and marine hot water heaters to choose from. Whether you have a small sailboat or a large yacht, you're sure to find the perfect hot water system for your needs. And if you have a question or need any additional information about our selection of marine hot water heaters, we're here to help. Reach out today and one of our knowledgeable team members will be more than happy to assist you.

Learn More About Marine Hot Water Heaters

At Boat & RV, we make it easy to find the right product for your needs. But we also understand that finding the right marine hot water heater can be a challenge. Check out our helpful Information Center or keep reading to learn more about marine hot water heaters and how to choose the best product for your watercraft.

HOW DOES A MARINE HOT WATER HEATER WORK?

While a marine hot water heater may look like a standard appliance you'd find in your home, it actually utilizes a unique method for heating water. The boat hot water heater includes a heating element that is immersed in the water. An AC current then powers this heating element and can be controlled through the use of a thermostat.

HOW ARE MARINE HOT WATER HEATERS POWERED?

Typically, all marine hot water heaters are powered using one of two methods: electric or propane gas. In addition to this, a marine water heater with heat exchange can use the boat engine's wasted heat energy as an alternative power source. It's important to note that when water is heated this way, the thermostat has no real control over the temperature of the water. Instead, you'll need to install a tempering valve at the heater or an anti-scald valve at the faucet to avoid potentially dangerous scenarios.

HOW MANY BTUS DO I NEED FOR MY HOT WATER HEATER?

The British thermal unit (BTU) is a measure of how much energy is needed in order to heat water. Typically, the higher the BTU, the more water a marine hot water heater is capable of heating. A boat obviously won't need as high of a BTU as a house would. So, when choosing a marine hot water tank, ensure you're getting the right BTU for your realistic hot water needs.

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