Kuuma 11841 Marine Water Heater ā 11 Gal, 120V AC, Front Heat Exchanger (735-11841)
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Dual-Source Hot Water ā Shore Power at the Dock, Engine Heat Underway
The Kuuma 11841 (735-11841) is an 11-gallon marine water heater designed to work with whatever power source you have available. Plug into shore power at the dock, or let your engine's coolant loop do the work while you're underway ā the front-mounted heat exchanger keeps the tank topped up on passage so you arrive with hot water ready.
Key Features
- 11-Gallon Capacity ā suitable for larger vessels, liveaboards, and extended cruising
- 120V AC / 1500W Element ā shore power compatible; slightly lower draw than 1800W units, easier on smaller shore power pedestals
- Front-Mounted Heat Exchanger ā engine coolant loop integration for underway hot water production; front placement suits forward engine room plumbing access
- Aluminum Tank & Aluminum Alloy Case ā reduces galvanic corrosion risk compared to dissimilar-metal construction; lightweight build
- 1/2" NPT Hot/Cold Connections ā standard fitting size for straightforward plumbing integration
- UL/CE Certified, Ignition Protected ā approved for use aboard gasoline-engine vessels; dual certification for US and European markets
ā ļø Important: Heat exchanger is designed for use with engine coolant only. Do not connect to raw water systems.
Parts Desk Insights
SKU 735-11841 is sourced through Land 'N' Sea under the Kuuma brand (note: tag reads brand:kuuma-grills ā Kuuma is primarily known for grills but produces a marine water heater line; confirm brand tag accuracy). At 1500W this unit draws less than the Seaward S1100/S1100W (1800W) ā worth noting for customers on 15A shore power circuits where headroom is tight. Front heat exchanger placement: compare against Seaward F600 (698-F600) which is also front-mounted, if the customer is deciding between brands. The engine coolant-only restriction on the heat exchanger is a critical install note ā flag prominently when advising customers with raw-water-cooled engines. No image currently on file ā flag for photo or manufacturer asset request.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3ā4 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 ā 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 ā 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.