$1,250.00 ex GST


Rinnai Builders B20 Continuous Flow
Hot Water Unit 50 Degree Natural Gas

Product Information

Gas Type: Natural Gas
Installation: External

Technical Information

Capacity (at 25 deg C rise): 20 ltr/min
Gas Connection: 3/4” (20mm)
Gas Consumption: 160 MJ/h
Minimum Water Pressure: 160 kPa
Maximum Water Pressure: 1000 kPa
Star Rating: 6.1 Star
Temperature Setting: 50 deg C
Water Connections: 3/4” (20mm)
Information: Available in 16L, 20L
and 26L models. Available in Natural
Gas and LPG models

Note: will price match any written quote


Heat Exchanger Warranty: 10 Years
Spare Parts and Labour: 3 Years

Size and Dimensions

Height: 530 mm | Width: 350 mm
Depth: 194 mm | Number of People: 2-3
Weight (Dry): 15 kg


• Hot Water Lagging
• Includes original fault finding visit up to 30 mins only (same visit)
• To commission and submit compliance paperwork to local authority

Additional extras

• NOTE: 50-degree models to be used only unless otherwise requested. If 60-degree model requested
a tempering valve must be installed and $100 will be added
If it is a 100% like-for-like change-over no tempering valve is required
• If a controller is required add an extra $100+ per controller (install only) within 10m of HWS
• To upgrade gas to 20mm within a 5m straight run of existing gas point or meter box add an extra $250+
• If a weatherproof power point (GPO) is required add an extra $220+ (single story house only)
• Additional visits will incur an additional fee
• If the unit requires a ladder to install, then a second person will be required and $100+ will be added