Rinnai Infinity A20 Continuous Flow Gas Hot Water

Enjoy endless hot water on demand with the Rinnai Infinity A20 , a compact and efficient continuous flow gas hot water system designed for New Zealand homes. Unlike traditional electric cylinders, the Infinity A-Series only heats water when you need it, making it a reliable, energy-efficient choice for residential use.

Perfect for external installation , the A20 is suited to both mains and medium pressure water systems. With hot water flow rates from 1.5–16 L/min , it easily meets the needs of small to medium households. Available in Natural Gas or LPG , you can select the fuel option that best suits your home.

For added safety and durability, the A20 comes with built-in frost protection as standard, plus multiple safety devices including flame failure, boil-dry, overheat, fusible link, pressure relief valve, and combustion fan RPM check.

Key Features:

Continuous flow hot water – never run out

Energy efficient – only heats water when needed

External installation only

Suitable for mains & medium pressure systems

Flow rate: 1.5–16 L/min

Direct electronic ignition

Nominal operating pressure: 120–1000 kPa

Frost protection fitted as standard

Available in Natural Gas or LPG (choose at purchase)

Fixed temperature settings: 40, 42, 50, 55, 60, 65°C

Safety devices: flame failure, boil-dry, overheat, fusible link, pressure relief valve, combustion fan RPM check

Not Suitable For:

Spa or swimming pool heating

Hydronic heating applications

Areas with hard or acidic water (treatment required)

The Rinnai Infinity A20 combines advanced technology, compact design, and proven performance to deliver hot water whenever you need it – efficiently, safely, and reliably.