Rinnai Infinity B26 Black Model Number: Infinity B26 Black
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Australia’s favourite continuous flow system – now in black
Looking for a reliable, energy-smart hot water solution? The Infinity B20 Gas Continuous Flow Hot Water Unparalleled in performance, the Rinnai’s B26 is Australia’s favourite Gas (Tankless) Continuous Flow Hot Water Heater for 1–2 bathroom homes (1–3 in warmer climates).
Now available in a bold black finish or classic dune, the B26 delivers superior comfort and reduced running costs, with no energy consumed until a tap is turned on. With an impressive 6 star energy rating, it’s the most energy efficient 26L continuous flow system on the market.
Built to withstand tough Australian conditions, the slimline design also saves valuable outdoor space.
Complete your B26 setup with our full range of hot water controllers for added convenience and control.
Dimensions:
H: 531, W: 351, D: 195
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
- 6.1 Star equivalent energy rating*
- Never runs out of hot water
- Precise temperature control for safety and convenience
- Puretemp™ temperature stability technology
- Natural Gas models available
- 25 year extended heat exchanger warranty**
6.1 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 – B26 Black Gas (Tankless) Continuous Flow Hot Water System | Unit | ||
| Bathrooms* | Cool Climate | No | 1 – 2.5 |
| Warm Climate | 1 – 3 | ||
| Dimensions | Height | mm | 531 |
| Width | 351 | ||
| Depth | 195 | ||
| Colour | Black | ||
| Installation | External | ||
| Gas Energy Rating | Stars | 6.0 | |
| Heating Capacity (raised at 25ºC) | L / Min | 26 | |
| Weight | kg | 15 | |
| Gas Input | High | MJ / h | 199 |
| Connection (mm) | Cold Water | mm | 20 (3/4″) |
| Hot Water | 20 (3/4″) | ||
| Gas | 20 (3/4″) | ||
| Minimum Operating Flow | L / Min | 1.5 | |
| Factory Pre-set Temperature** | °C | 50 / 60 | |
| Ignition | Direct electronic ignition with automatic flame sensing | ||
| Gas Type | NG | ||
| Electrical Supply (10 Amp weatherproof power point) | V / Hz | AC 240 / 50 | |
| Water Controllers | Up to 4 Water Controllers can be installed | ||
| Heat Exchanger Warranty | 25 years# | ||
| Parts / Labour Warranty | 3 years (5 years if two or more Water Controllers are installed in domestic applications) | ||
* 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.
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