Rinnai Builders B20 Hot Water System

Price: $1,350.00
Save money and reduce your environmental footprint with the Rinnai B20 continuous flow unit.
Rinnai Builders B20

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Introducing the Rinnai Builders B20 Gas Hot Water System, a sophisticated and energy-efficient continuous-flow hot water solution.

This remarkable series by Rinnai lowers running costs and reduces greenhouse gas emissions, making it an environmentally conscious choice for your home. The B20 is perfect for small to medium-sized households that value consistent hot water supply, ease of use, and a compact design.

Features and Benefits

  • Energy Efficiency: Enjoy eco-friendly operation and savings with the 6-star rating, reducing your environmental footprint.
  • Advanced Temperature Control: Experience a comfortable shower with Puretemp™ technology, maintaining consistent and safe water temperatures.
  • Water Conservation: Lower energy bills and save water with B20’s compatibility with low-flow showerheads (WELS).
  • User-Friendly Interface: Customise your hot water experience effortlessly with easy-to-use temperature controls and monitoring.
  • Japanese Quality: Manufactured in Rinnai’s high-tech facility, the B20 combines Japanese engineering and design for exceptional performance and reliability.
  • Compact Design: Install the space-saving B20 with ease, while the neutral Dune colour adds a touch of sophistication to any home.

Upgrade to the B20 and enjoy a hassle-free, tailored hot water experience in your home.

Finance Options Available

We’re pleased to provide a convenient financing solution through the  Brighte Personal Loan, enabling you to pay in instalments for our hot water systems. This straightforward option allows you to make the essential home improvements you need while controlling your finances.

Have a question about Brighte Finance? Contact us for help.

Rinnai Builders B20 Product Specifications

Model #B20
System TypeGas Continuous Flow
Gas TypeNatural Gas
Gas Energy Rating (Stars)6
Number of Bathrooms1-2
Temperature Setting50 deg C
Hot Water Flow Rate @ 25 DegC Rise20 litres/min
Min. Operating Flow Rate1.5 litres/min
Weight (empty)14 kg

Size and Dimensions

Width351 mm
Height531 mm
Depth195 mm


Gas Consumption156 MJ/h
Gas Connection20 mm
Cold Water Connection20 mm
Hot Water Connection20 mm


Minimum Water Pressure160 kPa
Maximum Water Pressure1000 kPa
Relief Valve Setting2060 kPa
Heat Exchanger Warranty15 Years*
Parts and Labour Warranty3 Years (5 Years if two or more Water Controllers are installed in domestic applications)

* Conditions apply.

Visit rinnai.com.au for more information.