Buffalo BX5 series

Brivis Buffalo BX5 series

The Brivis Buffalo 5-star heater has been designed with efficiency and reliability in mind. The perfect solution for replacing your existing Buffalo, the Buffalo 5 has the same gas pipe connection, flue position, base dimensions, electrical connection and base box—almost indentical to its predecessor, but with the improved 5-star energy rating.

Your investment in the Buffalo 5 is sure to provide you with years of trouble free, high-efficiency, as well as reduced gas consumption.

  • 2-speed flue fan
  • modulating gas valve
  • tubular heat exchanger
  • 5-year warranty


Output NG

BX520EN = 20 kW
BX526EN = 30 kW

Energy Star Rating


Model codes and star rating
  • BX520EN (5.1)
  • BX526EN (5.0)
Airflow L/s @ 100 Pa ESP


  • 300 mm base box - 540
  • 350 mm base box - 600


  • 350 mm base box - 970
  • 400 mm base box - 1040
Net weight

BX520EN - 57 kg

BX526EN - 67 kg

Market release 2012

Buffalo BX5 dimensions diagram and table

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At Rinnai NZ,  adding a touch of magic to life’s daily pleasures is what we are all about so that people can get on with the more complicated challenges in life.  Rinnai makes daily routines, like taking a hot shower or heating your home, simple, enjoyable and stress-free.  

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