POST Blue Line – Boat Diesel ECO Combi Boiler -20kW


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POST Blue Line – Boat Diesel ECO Combi Boiler -20kW

POST are a dutch marine boiler manufacturer with over 40 years of experience in producing reliable heating appliances for the maritime sector. Their appliances are extremely reliable and are suitable for daily liveaboard use. Henk Post, the head of product development and design at POST Marine, started Kabola in 1974 as a manufacturer of diesel-fired central heating systems, and in the early days with its core business in the commercial shipping industry. The boilers can run on diesel, red diesel, kerosene, and biofuel, and range from 10kw to 130kw. The fuel consumption rate for the lower wattage models we offer for installation is approximately 0.25 litres per kW per hour. However, the boiler won’t be running continuously or at full power once the boat is warmed up. Therefore, real-life fuel usage rates are often lower.

POST Blue Line Eco Boilers

The POST Blue Line range is a truly impressive bit of engineering. POST say that “The Blue Line is the cleanest and most efficient oil-fired central heating boiler of our time”. Blue line boilers have an incredible 0% soot emissions rating and the burner is well over 95% efficient. This way nearly all of the heat produced is used for heating domestic hot water or for the central heating system, and only a very small amount of heat is lost through the exhaust. Blue Line central heating boilers also use 35% less electricity, compared to other POST models. We are only listing smaller size domestic output ranges for POST Blue Line Boilers, but larger models are available upon request.

Post Boilers are delivered straight from the factory in the Netherlands. Please allow 2 weeks for delivery.

Flue Kit Included:

  • 7 day timer with thermostat
  • Stainless Steel Through Hull Fitting
  • Silencer
  • 2m Flex Exhaust Pipe
  • 4x Clamps


  • Heat output: 20kW
  • Flow rate DHW at 40°C:  12 to 24 litres per minute
  • Operating pressure: 1-2 bar
  • Burner efficiency: over 95%
  • Voltage: 240V
  • Power consumption based on 30%
    switch-on percentage: approx. 0.9A
  • Thermostat and 7-day timer

If you would like this diesel combi boiler fitted by a professional and certified marine heating engineer, please contact our sister company Marine Heating Solutions.


POST Blue Line Boiler Specifications

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