1700 Marine Water Heater
1700 Series Marine Water Heater – Compact, Durable Hot Water Solution for
Cruising Vessels
The Raritan 1700
Series Marine Water Heater brings efficient, long-lasting hot water to
boats of all sizes—engineered specifically for marine durability and ease of
installation. Whether you’re docked at a marina or cruising offshore, this
versatile system ensures fast, consistent hot water flow for showers, galley
tasks, and cleaning routines onboard.
Built with a glass-lined steel tank and surrounded by high-density foam
insulation, the 1700
Series maintains water temperature longer while reducing overall energy
consumption. Unlike traditional stainless steel units, the glass-lined tank
resists corrosion better in marine conditions and is backed by a sacrificial magnesium
anode for extended service life—even with inconsistent water quality or frequent
use.
With its powerful electric element, this heater delivers up to 13 gallons per
hour (GPH) on 120V or up to 18 GPH on 240V, supporting multiple uses without
delay. A fully adjustable thermostat allows water temperatures up to 160°F,
giving you control over comfort and efficiency when blending hot and cold
outputs.
For energy-conscious cruisers, the optional heat exchanger uses your engine’s
cooling system to heat water while underway—saving power by using heat that
would otherwise be wasted. The 7-foot internal coil maximizes contact area for
rapid thermal transfer without increasing system complexity.
Installation is streamlined with all inlet, outlet, and relief valve connections
on a single side. The unit connects easily to existing ¾” NPT pressure water
systems and is available in 6-, 12-, and 20-gallon sizes to match your vessel’s
layout.
Perfect for sailors in the Pacific
Northwest, power cruisers in the Gulf
Coast, or liveaboards anywhere in the Great
Lakes, the Raritan 1700
Series delivers efficient hot water where and when you need it—quietly,
reliably, and without taking up precious cabin space.
Raritan Water Heater 1700 – Reliable, Efficient Marine Hot Water for Every
Voyage
Designed for life at sea, the Raritan
Water Heater 1700 Series delivers dependable hot water with robust
construction, efficient performance, and a space-saving footprint ideal for
marine environments. Whether you're cruising offshore, docked in a marina, or
anchored in a quiet cove, this marine-grade water heater ensures that hot water
is always available—safely, quickly, and without hassle.
Built for long-term durability, the 1700 Series features a
corrosion-resistant stainless steel tank, high-density insulation, and
an optional engine heat exchanger for dual-source heating. Its compact design
allows for flexible installation in tight spaces, making it a top choice for
sailboats, powerboats, and yachts alike.
Engineered for
Marine Conditions
Unlike residential models, the Raritan Water Heater is built specifically to
endure the harsh marine environment. Every component—from the tank to the
thermostat to the heating element—is carefully selected and tested for
performance, longevity, and corrosion resistance.
The stainless
steel inner tank is pressure-tested and backed by Raritan’s reputation
for reliability. The high-density
foam insulation keeps water hot longer, reducing the frequency of
reheating cycles and conserving energy while underway.
Efficient Heating
with Multiple Power Options
The 1700 Series operates off a pressurized
water system and offers flexibility through electric
heating, engine
heat exchanger capability, or a combination of both. This means you can
heat water using AC shore power or onboard generator power while docked, and
switch to engine-based heating when underway—ensuring hot water is always on
hand.
The fast
recovery element ensures rapid heating and quick replenishment, so even
with limited tank size, you’re not left waiting for the next warm shower.
Compact Design,
Seamless Installation
Space is at a premium on any vessel. The Raritan Water Heater 1700 is designed
with a compact,
low-profile form factor that allows it to fit neatly into tight
mechanical spaces. It connects easily to standard plumbing and requires only a
pressurized freshwater system to function.
The intuitive layout and marine-grade fittings simplify installation and future
service, giving both owners and marine professionals confidence in its setup and
operation.
Safety Meets
Performance
Raritan incorporates reverse-polarity
protection, temperature regulation, and pressure relief systems into
the 1700 Series for safe, worry-free use. You get consistent, clean, hot
water—without the risks associated with unregulated heat or electrical exposure
in marine environments.
Trusted by Boaters
Worldwide
From liveaboards to weekend cruisers, Raritan’s water heaters have become a
staple in marine systems worldwide. With a focus on longevity,
low maintenance, and real-world performance, the 1700 Series is
engineered to keep up with the demands of life on the water.
Frequently Asked Questions (FAQs)
Q: Can the Raritan Water Heater run off both shore power and engine heat?
A: Yes. The 1700 Series is available in models with electric-only or
electric + engine heat exchanger capabilities, allowing flexible use depending
on power source availability.
Q: What type of water system is required for installation?
A: A pressurized freshwater system is required. The unit will not
operate with a gravity-fed system.
Q: Is the tank interior made of aluminum or steel?
A: The tank is made of marine-grade
stainless steel, providing excellent resistance to corrosion and long
service life.
Q: How long does it take to heat a full tank of water?
A: Heating time varies based on tank size and power source, but the
high-efficiency heating element ensures rapid recovery—typically within 15–30
minutes.
Q: Can I install the heater in any orientation?
A: No. The unit should be installed in an upright position as specified
in the installation manual for optimal performance and safety.
Q: What safety features are built in?
A: Features include a temperature and pressure relief valve,
reverse-polarity protection, and a thermostat for temperature regulation.
Q: Is it safe to use the Raritan Water Heater with saltwater?
A: The system is designed to heat freshwater
only. Introducing saltwater into the tank will damage internal
components and void the warranty.
WARNING:
This product can expose you to chemicals including Di-n-hexyl Phthalate (DnHP)
which is known to the State of California to cause reproductive harm, and
Vinyl Chloride which is known to the State of California to cause cancer. For
more information go to 
