Marine Hot Water Systems

BCA Australia’s Marine Hot Water Systems

Welcome to a world of comfort and convenience with our cutting-edge boat water heaters!

At BCA Australia, we understand that life on the water demands practical solutions without compromising on luxury. Our range of marine hot water systems are tailored for the everyday boat enthusiast, ensuring that you can enjoy hot water for showers, cooking, cleaning, and everything in between!

Engineered with reliability in mind, our boat hot water systems seamlessly integrate into your boat’s infrastructure, delivering a steady and efficient supply of hot water whenever you need it.

Whether you’re anchored in a serene cove, navigating open waters, or docked at a marina, our marine water heaters provide a touch of luxury that enhances your time on the water. When you purchase a marine hot water systems from BCA Australia, you’ll enjoy the benefits of:

An economical and efficient way to warm water

Easy installation as heaters don’t require pipes

Home comforts to make long boat trips more enjoyable

Whether you are planning an extended trip on the ocean, or are wanting to enjoy quiet afternoons fishing in the bay, you can’t afford to miss out on installing one of our safe and reliable boat hot water heaters.

Our Sigmar Marine Hot Water Systems

We stock two innovative boat hot water systems from Sigmar Marine, the “COMPACT” boat water heaters and the “INOX” boat water heaters.

Ranging from 20 to 80 litres, these boat hot water systems are attractively encased in a compact plastic shell and offer better technical characteristics, water tank insulation and resistance to corrosion. They are easy to install and quick to heat. The COMPACT hot water system and the INOX hot water systems offer the best cost for quality on the market today.

All Sigmar boat hot water heaters feature an engine heat exchanger which transfers heat waste from the engine to the water tank, saving on your electricity costs.

Sigmar Marine is a hot water system certified manufacturer and one of the top leading brands for marine hot water systems. We are certified Lloyds Register Quality Assurance ISO 9001 certified and carried all spares needed for the Sigmar boat hot water systems range. Contact us today if you need specific hot water system parts!


Marine Hot Water Systems


WIDTH: 366mm
LENGTH: 430mm
HEIGHT: 358mm
Price: $1,437.00


WIDTH: 287mm
LENGTH: 558mm
HEIGHT: 297mm
Price: $1,457.00


WIDTH: 366mm
LENGTH: 540mm
HEIGHT: 358mm
Price: $1,699.00


WIDTH: 366mm
LENGTH: 660mm
HEIGHT: 358mm
Price: $1,829.00


WIDTH: 366mm
LENGTH: 875mm
HEIGHT: 358mm
Price: $2,082.00


WIDTH: 410mm
LENGTH: 920mm
HEIGHT: 401mm
Price: $2,554.00

Heating Element
240 volt or 110 volt (Watt)
Part Number

Materials: INOX AISI 316
Installation: Vertical / horizontal deck and bulkhead.
Insulation: Polyurethane foam (max 50 mm. top part of water heater)
Fittings Engine and Water: ½ “ Gas BSP UNI ISO 228
Safety and Non Return Valve: 6 BAR ± 1 (87 psi)
Heating Element: Incoloy with AISI 316 1 ¼” fitting.

Advantages of Sigmar Marine Hot Water Systems:

  • Occupy less space than equivalent boat water heaters with separate fastening brackets
  • Greater strength of plastic to corrosion, breakage or damage
  • Greater electric insulation of plastic
  • Better thermal insulation: more insulation material covers the upper part of water heater where heat dissipation is normally greater thanks to inside tank’s dis-axial position in respect of outside casing
  • Plastic casing itself dissipates less heat than other materials
  • Greater security: casing houses five sturdy fixing points (rather than the four of traditional separate side mountings/brackets)
  • Quicker and simpler installation: no separate side mountings or brackets that have to be dismantled / remounted and integrated bracket’s five fixing points are easily accessible from the sides or above
  • Safer installation: no sharp edges or burrs
  • Heat exchangers in stainless steel ensure that engine heat waste is transformed into hot water

Characteristics of Our Hot Water Tanks for Boats:

sturdy plastic casing with integrated brackets

stainless steel AISI 316 inside tank

injected polyurethane foam

stainless steel AISI 316 heat exchanger

800/1200W 220V (on request 110V) heating element

regulating thermostat with double safety

safety and non-return valve

universal mount (vertical and horizontal)

thermostatic mixing valve kit available as an accessory

various models with different storage capacity are available

Compact Mounting Positions

Thermostatic Mixing Valve Kit

This kit permits the mixing valve to be easily mounted onto all SIGMAR COMPACT.
Part no: 15003

SIGMAR marine mixing valves function automatically. All you have to do is turn the knob in the desired direction in order to obtain a temperature between 38°C (100°F) and 65 °C (149°F) with a tolerance of ± 7°C (±44°F).

The reliability of the device is assured by its simple design and no need of auxiliary energy. A thermostatic bulb senses the temperature of the mixed water and maintains it by changing the amount of hot or cold water mixed. N.B. in order to obtain a correct mix, the pressures of the hot and cold water must be the more or less the same.


Water saving : By regulating the water temperature at the heating source, a significant saving of water can be attained.

Safety : Water temperature is preset and the chance of scalding is eliminated.

Temperature range : 38° – 65 °C ± 7 °C (100 °F – 149 °F ± 44 °F)
Flow rate ?p 1 bar (14.5 Psi) (kv): 1.300 l/h (347 US gals/h)

Max. temperature: 110 °C (232 °F)
Max. pressure : 10 bar (145 Psi)

Spare parts for Sigmar Compact Boat Hot Water Heaters

Heating Elements: Listed Below
Volts Watts Material Part No.

Part No: 10012

Safety non return value

Part No: 10016

Monophase thermostat 220V/110V

Part No: 15003

Thermostatic mixing valve Kit Range 30C – 48C/86F-118F

Boat and Caravan Hot Water Tanks from BCA Australia

BCA Marine & Leisure is proud to offer boat water heaters from Sigmar Marine. A Sigmar Marine water heater is a great option for boaters who want to enjoy hot water on their boat. These tanks are made of high-quality materials and can withstand the rigors of marine life. They are also very easy to install, making them a great choice for those who do not want to spend a lot of time on installation. A Sigmar Marine water heater is an excellent choice for boaters everywhere.

If you’re looking for reliable and high-quality RV hot water systems, look no further. We offer a wide range of hot water tanks for RVs that are perfect for all types of caravans, from small to large. With a hot water tank from BCA Marine & Leisure, you’ll never have to worry about running out of hot water while on the road.

When purchasing marine hot water systems from us, you have several options in terms of size. A COMPACT Hot Water Boiler from Sigmar Marine is from our smaller capacity line. Ranging from 20 litres to 40 litres, a COMPACT Hot Water Boiler is perfect for when saving space is of the utmost importance. If you need hot water tank with a bit more capacity, we also carry COMPACT INOX Boilers from Sigmar Marine. These hot water tanks come in capacities of 60 litres and 80 litres. Whatever size hot water tank you need, we’ve got you covered.

If you are interested in learning more about our hot water tanks for RVs and boats, please get in touch with BCA Australia by calling 041 849 7029, emailing, or by filling in our online form on the contact page.

Sail boat sitting on clear blue water | Featured image for the Marine Hot Water Systems Page of BCA Australia.

An Essential Part of Boating Life

They provide the necessary hot water for cooking, cleaning, and bathing. But any equipment that you install in a boat of caravan must be able to withstand the rigors of constant travel. All of the hot water tanks for boats and caravans we carry are extremely durable and can withstand the abuse that comes from the sea and the road.

When shopping BCA Marine & Leisure for marine hot water systems, you can rest assured that you will be purchasing the best quality and most reliable portable hot water system on the market. We understand that when you’re travelling, you need a hot water tank that is easy to use and reliable. That’s why we carry hot water systems that have been designed with simplicity in mind. Our tanks are easy to install and come with clear instructions so that you can get started using them right away. Our boat hot water systems also come in a variety of capacities, and we carry several different shapes and sizes of to fit your needs.

We’ll work with you to set you up with the perfect hot water system for your boat. Give us a call on 041 849 7029, email us at, or contact us by filling in our online form on the contact page. We are standing by and ready to help provide you with hot water for your boat.

Purchasing Tips for Boat Hot Water Tank Systems

It’s understandable if you don’t know where to start when shopping for a hot water tank for a boat or caravan. Here are a few things to keep in mind when shopping for a portable hot water tank:


How much hot water do you need? Is this hot water system meant to service a family, a couple, or a single person? Choose a hot water tank that has the capacity to meet your needs.


Even in the largest of caravans and boats, space saving is important. Make sure the hot water tank will fit in the space you have available.


Some hot water tanks come with features like temperature control and universal mounting. These features can help you save time, space and energy.

Frequently Asked Questions

The Marine hot water systems sold by BCA Australia are between 20 and 80 litres. The size of marine hot water system you require will depend on the size of your boat and available space.

Water heater manufacturers do need to be certified. Sigmar Marine is a certified water heater manufacturer, by Lloyds Register Quality Assurance ISO 9001 to produce boat hot water heaters that last.

Installing boat water heaters on a boat means you have hot water for showering and washing dishes. hot water systems for boats make your time onboard more comfortable as a result. Read our Marine Hot Water Heater Guide to learn more about hot water installations.

A marine installation enables you to heat water on board your boat. With our heater installations, you can take hot showers and wash dishes with hot water. To learn more, read our guide to Marine Hot Water Installation.

Don’t forget to get updated on our Shipping Policy & Prices!

Get in Touch to Learn More

To learn more about any of the leisure accessories stocked by BCA Australia, you can get in touch by calling 0418 497 029 emailing or by filling in the online form and we’ll be in touch as soon as possible. Alternatively, browse our marine accessories shop and make a purchase online today!


Family sailing on a boat together | Featured image for the Marine Hot Water Systems Page of BCA Australia.
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