Whale Seaward 11 Gallon Hot Water Heater - Stainless Steel - 120V - S1200E
Manufacturer Part #: S1200E
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Whale Seaward 11 Gallon Hot Water Heater – Stainless Steel – 120 V (Model S1200E)
The Whale Seaward 11 Gallon Hot Water Heater – Stainless Steel – 120 V (Model S1200E) is a high‑quality marine‑grade electric water heater designed to deliver dependable and consistent hot water for boats, yachts, RVs, and mobile living environments. With an 11 gallon (42 L) capacity and 120 volt electric operation, this unit provides abundant hot water for showers, sinks, kitchens, and galley use—even when shore power is the only available source.
Constructed with a stainless steel exterior, the S1200E offers superior corrosion resistance and durability in harsh saltwater conditions, ensuring long service life and reliable performance. The heater features double‑wall heat exchanger construction for efficient heating, integrated pressure relief and safety controls, and a convenient temperature/pressure drain tube to simplify maintenance.
Designed for horizontal mounting, this Whale Seaward water heater fits seamlessly into marine and RV plumbing systems. Its combination of smooth operation, robust construction, and generous capacity makes it an excellent choice for onboard comfort and everyday use.
Applications
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Marine fresh water systems on boats and yachts
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RV and camper hot water supply
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Showers and galley hot water needs
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Replacement or new installations in 120 V systems
Key Features
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Corrosion-Resistant Exterior: The 304 stainless steel jacket provides a "yacht-grade" finish that won't rust, pit, or peel like galvanized or painted steel units.
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High-Efficiency Heating: Equipped with a 1500W / 120V element that provides a fast recovery rate, ensuring you have enough hot water for back-to-back showers.
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Robust Aluminum Tank: The inner tank is constructed from high-quality aluminum, which is lighter than steel and offers excellent thermal conductivity.
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Magnesium Anode Protection: Includes a replaceable magnesium anode rod to protect the aluminum tank from galvanic corrosion, significantly extending the unit’s lifespan.
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Safe for Gas Engines: The unit is Ignition Protected and meets all ABYC, USCG, and CE standards for marine installation.
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Safety Integrated: Features a factory-installed Temperature & Pressure (T&P) Relief Valve and a high-limit thermal cut-out switch for peace of mind.
Technical Specifications
| Attribute | Specification |
| Model Number | S1200E (Whale/Seaward) |
| Capacity | 11 Gallons (41.6 Liters) |
| Voltage / Wattage | 120V AC / 1500W |
| Heat Exchanger | None (Electric Only) |
| Exterior Material | 304 Stainless Steel |
| Dimensions | 16" W x 16" D x 22" H |
| Weight | 32 lbs (Empty) |
Why Choose the S1200E?
If your vessel does not have a closed-loop engine cooling system or if you prefer a simpler plumbing setup without the risk of engine coolant leaks, the S1200E (Electric Only) is the ideal solution. It is lighter and easier to install than models with heat exchangers, while still providing the high-end stainless steel aesthetic and durability.
Installation Pro-Tip:
Since this is a 120V / 1500W unit, it will draw approximately 12.5 Amps. Ensure it is wired to a dedicated marine-grade circuit breaker. Crucial: Never apply power to the unit until you are certain the tank is completely full of water (open the hot water faucet until a steady stream flows). Running the element in a dry tank will cause it to burn out in seconds.
Whale Seaward 11 Gallon Hot Water Heater - Stainless Steel - 120V - S1200E is backordered and will ship as soon as it is back in stock.
Whale Seaward 11 Gallon Hot Water Heater - Stainless Steel - 120V -...
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