Rinnai Infinity B12

Rinnai Infinity B12 Model Number: Infinity B12

$1,399 Supplied & Installed in Perth

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Reliable, energy-efficient hot water for single bathroom homes

Experience continuous hot water without compromise. Perfect for one-bathroom households, the Infinity B12 Gas Continuous Flow Hot Water Heater delivers powerful performance in a compact design.

Using no energy until a tap is turned on, this smart system offers lower running costs and greater efficiency. With an impressive 6.2 star energy rating*, it’s the most energy-efficient 12L continuous flow hot water unit available.

Built tough for Australian conditions, the Infinity B12 features a slimline design that saves space, while offering advanced features like precise temperature control display, enhanced safety monitoring and Puretemp™ stability control for consistent water temperature.**

Backed by Rinnai’s 25 year heat exchanger warranty***, you can count on long-lasting performance and peace of mind.

Upgrade your setup with Rinnai’s range of hot water controllers for even more convenience and control.

Dimensions:

H: 531, W: 351, D: 202

Important Pricing Information

Our listed prices apply to standard, like-for-like replacements of existing hot water systems, assuming the new unit is similar in type and easily accessible.

If your setup requires additional work-such as new pipework or valve upgrades-extra charges may apply. These costs generally range between $85 and $420. Any variations will be clearly explained by our technician before work begins, so you know exactly what to expect.

Please note:
Quoted pricing is based on compliant installations. If your system requires upgrades to meet current plumbing or gas regulations, this may incur additional costs. Again, our team will always discuss these with you upfront.

What’s Included

✔️ Removal and responsible disposal of your old hot water unit
✔️ Plumbing and gas compliance certificates provided
✔️ Honest pricing, no surprises-unlike many online-only providers
✔️ Perth-based customer service you can rely on

✔️ All work done to AS3500 standards

System Type Changeover?

Converting from gas storage to continuous flow? Expect an additional cost of $450–$1550 depending on site specifics.

Features & Performance

Ideal for 1 bathroom
Never runs out of hot water
Precise temperature control for safety and convenience
6.2 Star equivalent* energy rating
Status operation monitor
Puretemp™ temperature stability technology**
LPG or Natural Gas models available
25 year extended heat exchanger warranty***

6.2 Star equivalent energy rating*

Low running costs
Highly efficient
Low greenhouse gas emissions

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

Rinnai quality

25 year extended heat exchanger warranty***
After sales support

Related products/Add-ons

★ Hot Water Controllers
★ Pipe Covers
★ Recess Boxes
★ Security Brackets
★ Smartstart Water Saver system

* Independently calculated using Australian Standard AS5263.1.2. | S5263.1.2 limits the rating shown on the energy label to 6.0 Stars. | Where the calculated rating of Rinnai appliances exceeds 6.0 Stars it is designated as an “equivalent” rating.
** Puretemp™ temperature stability control ensures that the water temperature remains steady, even during fluctuations in flow.
*** 25 year extended heat exchanger warranty available subject to participating in the Rinnai scheduled service program. For full terms and conditions please refer to the warranty booklet.

Specifications

Rinnai – Infinity B12 Gas (Tankless) Continuous Flow Hot Water System			Unit	Values
Shower Outlets	Warm Climates		No	1
	Cool Climates			1
Dimensions	Height		mm	531
	Width			351
	Depth including Brackets			202
	Height including Brackets			571
	Hot Water Outlet	From Wall		87
		Left from Centre		105
	Cold Water Inlet	From Wall		68
		From Centre		10
	Gas Connection	From Wall		77
		From Centre		83
Connection Sizes	Hot			15
	Cold			15
	Gas			20
Weight			kg	13
Energy Rating			Stars	6.1
Flow Rate		25°C	L / min	12
		20°C		15
Operating Water Flow		Minimum		1.5
Gas Rate	NG	Minimum	mj / h	16
		Maximum		92
	LPG	Minimum		16
		Maximum		92
Water Pressure		Minimum	kPa	120
		Maximum		1000
Factory Default Temperature			°C	50 / 60
Electrical Consumption			W	68
Status Monitor				Yes

* Sizing assumes AAA or 3 star outlets. For non WELS rated or WELS rated fixtures with higher flow outlets (AA, A, 2 star or 1 star rated), a larger size appliance or additional appliance may be required to deliver adequate performance. This is a guide only, special site and location factors may affect this. Half a shower outlet refers to a guest shower or powder room that is not used all the time. For more information, consult with your hot water specialist.