Raritan 6-Gallon Marine Water Heater with Heat Exchanger — 120V AC (78-170611)
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 — Compact 6-Gallon Capacity
The Raritan 6-Gallon Marine Water Heater (78-170611) brings Raritan’s premium glass-lined steel tank construction to smaller vessels and tighter spaces. The same proven technology as the 12-gallon model — glass-lined tank, replaceable sacrificial anode, flame-retardant polymer jacket, and dual-source heating — in a more compact, lighter package suited to day boats, weekenders, and smaller cruisers.
Key Features
- 6-Gallon Capacity — right-sized for couples and small crews; compact footprint for tight installations
- 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 internal corrosion
- Replaceable Sacrificial Anode — electrolysis protection; field-replaceable to extend tank service life
- Adjustable Thermostat — precise water temperature control
- Flame-Retardant Polymer Jacket — corrosion-resistant exterior; resists below-deck dampness and handling damage
- 5-Year Limited Tank Warranty — backed by Raritan’s confidence in glass-lined construction
Parts Desk Insights
SKU 78-170611 is the 6-gallon variant in the Raritan glass-lined water heater line under the Raritan Engineering brand. Direct comparison to the 12-gallon (78-171211): identical construction and feature set, capacity and weight are the differentiators — 6-gallon at 18.6 kg vs. 12-gallon at 27.9 kg. Position the 6-gallon for smaller vessels and couples; the 12-gallon for larger crews and liveaboards. Both are premium-tier units vs. the aluminum-tank Kuuma and Seaward alternatives — the glass-lined tank and 5-year warranty are the key value arguments. At 18.6 kg, installation is a two-person job; confirm access and mounting location before ordering.
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.