Raritan 12-Gallon Marine Water Heater with Heat Exchanger — 120V AC (78-171211)
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Premium Glass-Lined Marine Water Heater — Built to Last Below Deck
The Raritan 12-Gallon Marine Water Heater (78-171211) is a premium-grade water heater engineered specifically for the marine environment. Where most marine water heaters use aluminum or galvanized steel tanks, Raritan uses a glass-lined steel tank — a construction method proven to outlast stainless steel in hot water applications — paired with a flame-retardant polymer jacket that resists corrosion from the constant dampness found below deck.
Key Features
- 12-Gallon Capacity — ample hot water for larger crews, liveaboards, and extended passages
- 120V AC / 1250W Element — shore power compatible; lower wattage draw suits vessels with limited shore power capacity
- Heat Exchanger — engine coolant loop integration for underway hot water production
- Glass-Lined Steel Tank — more durable than stainless steel in hot water service; resists scale and corrosion from the inside out
- Replaceable Sacrificial Anode — provides electrolysis protection; field-replaceable to extend tank life
- Adjustable Thermostat — precise water temperature control
- Flame-Retardant Polymer Jacket — will not corrode from below-deck dampness; resists damage during installation and handling
- 5-Year Limited Tank Warranty — Raritan’s confidence in their glass-lined construction
Parts Desk Insights
SKU 78-171211 is a Raritan Engineering premium marine water heater — the glass-lined steel tank and replaceable anode system set it apart from the aluminum-tank Kuuma and Seaward units in this category. Position it for customers who prioritize longevity and are willing to pay a premium; the 5-year tank warranty and anode serviceability are strong closing points. At 27.9 kg this is a freight-weight item — confirm shipping method and installation access before ordering. The 1250W element is lower than most competitors (vs. 1500–1800W) — slower heat recovery but easier on limited shore power circuits. Confirm heat exchanger plumbing compatibility (engine coolant only vs. raw water) with the customer before recommending.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.