Factory Heaters Ltd supplying Rinnai Sensei Next Generation Commercial water heaters

Blog • February 22, 2021

For the best in-class, added value water heating solutions at an economical price.


Factory Heaters Ltd supply Rinnai Sensei water heaters which are the pinnacle in commercial water heating. The Sensei is a fully modulating, fully condensing, stainless steel, continuous flow water heater.


This unique water heater design offers turndown ratios of 13:1 and has many other new and exciting features. The Sensei range is available in 2 wall mounted versions:-


  • N1600i internal, N1600E External - 59.7kW. 35L/Min
  • N1300i internal, N1300E External - 47kW, 26L/Min



The Sensei range is A-rated and can offer flow rates above 1500 litres of temperature accurate hot water per hour.


The Rinnai Sensei is capable of being installed in a cascade arrangement meaning that multiple water heaters can be situated side by side to increase the flow rate and supply the most demanding applications. Newly incorporated features include flue damper, in-built sequencing controls, a stainless steel heat exchanger, easy gas conversion system and turbo-fan.


  • Increased performance and efficiency (96% gross efficiency)
  • 13:1 turndown ratio - optimising gas useage
  • Easy integration to Building Management Systems / remote monitoring
  • Extended flue runs of 45+ metres
  • Stainless steel heat exchanger offers increased durability and warranty.
  • Available in either Natural Gas or LPG
  • In-built controller for temperature setting and fault diagnostics


Pre-packaged Plant Room Solution.


 Factory Heaters Ltd can also supply your condensing water heater requirements as a pre-packaged plant room solution with multiple water heaters installed in a modular frame, together with pre-built pipework and connections :-



  • Offering increased flow rate
  • Can meet the supply of the most demanding applications
  • Reduce customer down-time significantly
  • Reduces on-site installation time significantly



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  • a row of boilers are lined up in a room with pipes .

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