Compact Sigmar Marine 20L Boiler

$1,437.00 inc GST

WIDTH: 366mm
LENGTH: 430mm
HEIGHT: 358mm

When you are spending time out in the wild or on the water having easy access to hot water can help make your adventure more pleasant. Whether it’s for enjoying a hot cup of tea or taking a refreshing hot shower, the 20L boiler from Sigmar Marine is perfectly suited for keeping you well provided with hot water.




The exterior of the Sigmar water boiler 20L is made from durable plastic that is resistant to corrosion and rust which makes for easy maintenance and a long product lifespan. The interior uses a stainless steel tank that is resilient and provides proof against corrosion. High quality polyurethane foam insulation keeps the heat inside the tank and away from the exterior creating an efficient and safe environment. It is also compact, taking up less space than comparable 20L boiler units, and the integrated mounting brackets make it easy to install so you can start accessing hot water on your boat or from your RV quickly.

Sigmar 20L Boiler – Installation

  • Using the holes found on the boiler, fasten it to a dry, flat and well ventilated surface.
  • Connect the input & output taps.
  • Connect the engine cooling to the heat exchanger.

Find Your Boating and Camping Accessories Online at BCA Australia

Need quality RV or marine accessories in addition to your Sigmar Marine water boiler 20L? Browse BCA Australia’s range of leisure accessories online for a selection of great products at excellent prices. We ship our marine hot water systems and caravan hot water systems anywhere in Australia. For more information on all of our products, or further enquiries, call 0418 497 029, email or fill out our online form and we will get back to you shortly.

20L Boiler Specifications:

  • Materials: INOX
  • 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

Water Boiler 20L Characteristics:

  • 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

Sigmar’s 20L boiler, thanks to its innovative compact plastic casing and integrated brackets offer the following advantages:

  • Occupy less space than equivalent water heaters with separate fastening brackets, which makes a great RV storage water heater.
  • 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/brackets 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 AISI 316 ensure that waste engine heat is transformed into hot water.

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