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Hot Water Calorifier System

STS Hot Water Calorifier offers high quality solutions for consistent hot water heating onboard vessels. We can supply large capacities up to 10,000 litres and custom-engineered according to customer’s specifications. The pressure tank is made of 304, 316 or 316L stainless steel, marine grade standard, and meets the various ICAS members’ class certification.


  • Available up to 10,000 litres in tank capacity
  • Customization possible for various functions such as the integrated control function, alarm options, number of circulation pumps and heater size
  • For safety precaution, STS hot water calorifier is designed with multiple safety points to cut off the heater
  • 304, 316 or 316L stainless steel pressure tank, classable by IACS members