Buffalo BX3 series

RRP $3,066 *Indicative installed cost (incl. furnace, controller, ducting, outlet, return grille, and installation) for a small home with 6-10 outlets is $7000-$10,000, and for a large home with 11-15 outlets is $11,000-$14,000.

Brivis Buffalo BX3 series

The Brivis Buffalo external weatherproof units have been reliably keeping New Zealanders warm for over 35 years.

  • excellent value for money
  • easy changeover
  • reliable and built to last
  • superior airflow
  • Natural gas connections only
  • Five year parts and labour warranty


BX320EN: 87 MJ/h (max.)
BX326EN: 120 MJ/h (max.)

Output NG

BX320EN: 20 kW (max.)
BX326EN: 28 kW (max.)

Model codes and star rating
  • BX320EN (3.8)
  • BX326EN (3.5)
Airflow L/s @ 100 Pa ESP


  • 300 mm base box - 541
  • 350 mm base box - 574


  • 350 mm base box - 849
  • 400 mm base box - 957
Net weight

BX320EN - 57 kg

BX326EN - 67 kg

Market release 2015

Brivis Buffalo BX3 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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