The Rinnai B Series

The B series units are specifically designed for builders and projects. The units are highly efficient, only heating water as it passes through the unit, reducing the running costs and greenhouse gas emissions. The units are compact in size which allows it to be installed almost anywhere, these are the most technically advanced hot water systems available today.

Rinnai Hot Water Heaters 2

The units are available in 16L (6.2 star) , 20L (6.1 star) or 26L (6.1 star). Temperature presets of 50C or 60C are also available.


  • Quality Japanese design and manufacturing in Rinnai’s own high tech facility.
  • High quality componentry engineered to last.
  • Quick connect system for temperature controller cables
  • Puretemp temperature stability technology provides PCB controlled and perfectly stable outlet water temperature
  • Superior 6+ star efficiency across the range of 16-26 litres units
  • 10 years heat exchAnge warranty
  • Sleek and compact design
  • Low flow shower head compatible

The Rinnai B Series is modelled on Rinnai’s heavy duty range of continuous flow gas hot water systems. This means that the units incorporate superior heat exchangers that are more durable than standard heat exchangers. These heat exchangers are backed up by a 10-year warranty. Each unit also features a mechanical heat exchanger bypass valve.

Rinnai Builders Continuous Flow Hot Water Systems are advantageous because they take up minimal space and are also a lot more energy efficient than standard storage-tank hot water systems. In a continuous flow hot water system, water is only heated as and when it is needed, meaning that no energy is wasted keeping a large storage tank hot. This improved energy efficiency also has a much smaller environmental impact.

The Rinnai Builders models are not to be confused with Rinnai HD Commercial continuous flow hot water heaters that are used for large plantroom applications which can be skid-mounted before they leave the factory.  This is where Each unit is pre-assembled in Rinnai’s state-of-the-art facility in South Australia. The advantage of skid-mounting the units is that they can be moved with ease, depending on the needs of your project. This modular approach allows you to have full flexibility to move your hot water supply to wherever it is needed.

Australian Hot Water can supply and install all Rinnai Builders continuous flow hot water systems, no matter what your project is. Australian Hot Water’s expert technicians are also available 24/7 for same-day service to assist with moving, maintaining, or repairing any Rinnai continuous flow system.

Call us today for expert advice and a free quote.

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