A16 $1,479, A20 $1,677, A24 $1,877, A26 $1,966, A28i $2,621
The Rinnai INFINITY A-Series are continuous flow hot water systems for residential applications. These water heaters produce endless hot water, and unlike electric cylinders, are energy efficient as they are only on when you need hot water.
There are five models to choose from depending on your hot water needs. Model numbers represent hot water capacity, for example the A26 produces 26 litres of hot water per minute at a 25 ° Celsius rise.
- external residential applications only (A16-A26)
- internal residential applications only (A28i)
- mains and medium pressure systems
- as a gas boost for solar connections (A28i model only1)
Hard or acidic water will need to be treated to use this product.
- as a spa or swimming pool heater
- for hydronic applications
1 Only unit that can be preset to 75 °C
Available for Natural Gas or LPG, specify at the time of purchase
40, 42, 50, 55, 60, 65 °C (70, 75, 85 °C*)
* A28i model only
|Model||Input MJ/h||Output kW|
Fitted as standard. Frost protection operates automatically, as long as the appliance is connected to the electrical power supply, by activating when the temperature inside the unit drops below 3.5 °C, and turns off once the temperature inside the unit reaches 7 °C.
Direct electronic ignition
|A16||0.9, 1.50||0.71, 1.09|
|A20-A26||1.08, 1.80||0.73, 1.12|
NG - 1.13kPa, LPG - 2.75 kPa
3.5 kPa (maximum standing pressure under abnormal intermittent conditions is 5.0 kPa).
In the case of commercial metering, (i.e. 35-37 kPa coming in), there may be a requirement to regulate the incoming pressure down.
Valve opens at 2060 kPa, closes at 1470 kPa
Nominal operating pressure:
Activation flow rate: 1.5 litres per minute
Please note: If the water inlet pressure or flow rate drops below the minimum values stated above, operation of the INFINITY is not guaranteed. The unit requires both minimum flow rate and pressure to operate correctly.
External units 50 dB(A), internal unit 54 dB(A). Some people are susceptible to low level noise. This needs to be considered if locating an appliance near a bedroom.
35 ppm (40 ppm A28i)
Energy Safety Supplier Declaration of Compliance declaration numbers:
A28i: Dec 2021
Our smallest most affordable model. This controller can be installed anywhere in the house.
Will run a bath for you, turn off the water, then tell you when it's ready.
Designed for kitchens and laundries, works in conjunction with the Bathroom Deluxe Controller.
Hide an external continuous flow water heater behind a door and out of sight.
An accessory that can be fitted to an external Rinnai INFINITY water heater. It is designed to expel combustion products in a sideways direction.
The upwards flue diverter is an accessory that can be fitted to an external Rinnai INFINITY. It is designed to expel combustion products in an upwards direction.
A sturdy security bracket can be installed to act as a permanent deterrent to thieves
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