S20 Solar Booster

The S20 gas booster uses all the technological advancements of the famous Infinity hot water system, with built in intelligence for solar boosting. It is factory set at a temperature of 70 degrees Celcius and offers 20 l/min maximum flow rate to service the fixtures in your home. Years of service can be expected when used in either a Rinnai Sunmaster or Rinnai Prestige solar hot water system.

Designed specifically for solar

Never runs out of hot water

Perfect for single bathroom homes

External model built to withstand Australian conditions

12 Year Heat Exchanger warranty

Superior technology

  • Quality Japanese design and manufacturing
  • Precise temperature control for safety and convenience
  • Compact design allows installation flexibility
  • Suitable for higher ambient water temperatures
  • Compatible with low flow rated shower fixtures (3 Star - 7.0 to 9.0 l/min)

Rinnai quality

  • After sales support
  • 12 year warranty on heat exchanger


Colour Dune
Factory Default Temperature (Celsius) 70
Water Pressure (kPa) : Minimum 160
Water Pressure (kPa) : Maximum 1000
Gas Rate (MJ) : Maximum 125
Flow Rate (L/min) : Maximum 20
Star Rating N/A
Connection Sizes Gas/Hot/Cold (mm) 20/20/20
Status Monitor No
Width (mm) 350
Depth (mm) 194
Height (mm) 530
Height inc Brackets (mm) 571
Hot Water Outlet from wall (mm) 87
Hot Water Outlet left from Centre (mm) 105
Cold Water Inlet from wall (mm) 68
Cold Water Inlet right from centre (mm) 10
Gas Connection from wall (mm) 77
Gas Connection right from centre (mm) 83
Gas Connection Length from base (mm) 40
Cold Connection Length from base (mm) 50
Hot Connection Length from base (mm) 39
Compatible with water controllers No

Note: Can NOT be used as a stand alone continuous flow water heater

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