Rinnai Infinity B26 Natural Gas Continuous Flow Hot Water System

The Rinnai Infinity B26 Natural Gas Continuous Flow Hot Water System is available online from Hot Water Outlet as a supply-only natural gas hot water unit with metro delivery available in selected areas Australia wide.

Customers can purchase the Rinnai Infinity B26 Natural Gas as a supply-only hot water system and request assistance arranging installation quotes after purchase through licensed local installers in selected metro regions.

The Rinnai Infinity B26 Natural Gas is a high-capacity external gas continuous flow hot water system designed for homes that need stronger on-demand hot water performance without a storage tank. With a 26 L/min flow rate, a 6.0 Star Equivalent Energy Rating and Puretemp™ temperature stability technology, it is a strong option for natural gas homes, larger households and replacement installations needing reliable hot water from a compact wall-mounted unit.

About the Rinnai Infinity B26 Natural Gas

The Rinnai Infinity B26 Natural Gas heats water as it passes through the unit instead of storing hot water in a cylinder. This gives the home continuous hot water while the unit has suitable natural gas supply, water flow and power available.

This model is designed for natural gas only. It is not interchangeable with LPG unless the correct LPG model is selected. The natural gas version is commonly suited to homes connected to mains natural gas, subject to gas pipe sizing, meter capacity and licensed gas fitting checks.

The B26 is generally suited to one to two bathroom homes and may suit up to three bathrooms in warmer climates depending on water temperature, fixture flow rates, usage patterns and site conditions.

Buy Rinnai Infinity B26 Natural Gas Supply Only

Buy the Rinnai Infinity B26 Natural Gas supply only online from Hot Water Outlet if you already have a licensed plumber and gas fitter arranged for installation.

The product price is for the unit only. Installation, valve kits, old system removal, disposal, gas fitting changes, electrical work, pipework changes, pressure control, recess boxes, pipe covers and compliance upgrades are not included unless separately quoted.

Common search terms this product suits include:

• Rinnai Infinity B26 natural gas price

• Rinnai B26 natural gas hot water system

• Rinnai REU-BM2626W natural gas

• 26 L/min natural gas continuous flow hot water

• Natural gas instant hot water system

• Outdoor natural gas hot water system

• Rinnai Infinity B26 supply only

• Rinnai B26 gas hot water replacement

Installation Quotes Available After Purchase

Hot Water Outlet does not directly provide installation services.

After purchasing the Rinnai Infinity B26 Natural Gas Continuous Flow Hot Water System, customers in selected metro areas may request assistance arranging installation quotes through licensed local plumbers and gas fitters.

Installation quote availability depends on:

• service location

• installer availability

• natural gas suitability

• gas supply requirements

• valve kit requirements

• access

• water pressure

• electrical connection

• outdoor location suitability

• compliance requirements

Additional installation costs may apply for:

• valve kit replacement

• old system removal

• disposal

• natural gas pipe sizing changes

• gas meter or supply suitability checks

• electrical connection or power point requirements

• pipework changes

• recess box installation

• pipe cover installation

• restricted access

• water pressure control

• non-compliant existing installation

• relocation from the existing hot water position

Rinnai Infinity B26 Natural Gas Delivery Brisbane

Hot Water Outlet offers metro delivery for the Rinnai Infinity B26 Natural Gas Continuous Flow Hot Water System in selected Brisbane areas.

This model may suit Brisbane homes replacing an existing natural gas continuous flow hot water system, especially where the current unit is externally mounted and the property already has suitable mains natural gas available.

Rinnai Infinity B26 Natural Gas Delivery Gold Coast

Hot Water Outlet offers metro delivery for the Rinnai Infinity B26 Natural Gas Continuous Flow Hot Water System in selected Gold Coast service areas.

This system may suit coastal homes, family properties, townhouses, investment properties and natural gas-connected homes needing a larger external hot water replacement.

Rinnai Infinity B26 Natural Gas Delivery Sydney

Hot Water Outlet offers metro delivery for the Rinnai Infinity B26 Natural Gas Continuous Flow Hot Water System in selected Sydney metro areas.

Customers can purchase the unit online and arrange installation separately or request assistance arranging installation quotes after purchase.

Rinnai Infinity B26 Natural Gas Delivery Melbourne

Hot Water Outlet offers metro delivery for the Rinnai Infinity B26 Natural Gas Continuous Flow Hot Water System in selected Melbourne metro areas.

Customers can order online and request assistance arranging installation quotes after delivery where available.

Is the Rinnai Infinity B26 Natural Gas Right for Your Home?

This system may suit you if:

• you need a natural gas continuous flow hot water system

• you are replacing an existing external natural gas hot water unit

• your property is connected to mains natural gas

• you want a larger 26 L/min continuous flow model

• your home has one to two bathrooms or up to three bathrooms in warmer conditions

• you want a compact wall-mounted hot water system

• you want a 6.0 Star Equivalent Energy Rating

• you want temperature stability technology for more consistent hot water delivery

• your property has suitable gas supply, water pressure, access and outdoor wall space

• you prefer supply-only purchase flexibility

Extra work may be required if:

• the existing unit is being moved to a new location

• gas pipe sizing does not suit the new appliance

• the gas meter or natural gas supply needs checking

• existing valves are old, missing or non-compliant

• water pressure is outside the required range

• electrical work is needed for the unit

• pipework changes are required

• access is restricted

• the old system needs removal or disposal

• the existing position does not meet clearance or compliance requirements

• the household needs even higher flow capacity due to simultaneous outlet use

Key Features of the Rinnai Infinity B26 Natural Gas

• Natural gas continuous flow hot water system

• Product code REU-BM2626W

• 26 L/min flow rate at 25°C rise

• 26 L/min flow rate at 20°C rise

• Suitable for one to two bathrooms and up to three bathrooms in warmer climates depending on conditions

• 6.0 Star Equivalent Energy Rating

• Puretemp™ temperature stability technology

• Compact outdoor wall-mounted design

• Status operation monitor

• Compatible with optional Rinnai hot water controllers

• Compatible with selected pipe covers, recess boxes and security brackets

• Minimum operating water flow of 1.5 L/min

• Minimum water pressure of 200 kPa

• Maximum water pressure of 1000 kPa

• Natural gas rate of 16–199 MJ/h

• Hot, cold and gas connection sizes of 20 mm

• Approximate unit weight of 15 kg

• 68 W electrical consumption

• Rinnai-listed 25-year extended heat exchanger warranty subject to scheduled servicing and warranty terms

Quick Specs

Brand: Rinnai
Range: Infinity B
Product: Infinity B26 Natural Gas Continuous Flow Hot Water System
Product Code: REU-BM2626W
System Type: Gas continuous flow hot water
Gas Type: Natural Gas
Installation Type: External outdoor installation
Recommended Household Size: Generally one to two bathrooms with up to three bathrooms in warmer climates depending on conditions
Energy Rating: 6.0 Star Equivalent
Flow Rate at 25°C Rise: 26 L/min
Flow Rate at 20°C Rise: 26 L/min
Minimum Operating Water Flow: 1.5 L/min
Minimum Water Pressure: 200 kPa
Maximum Water Pressure: 1000 kPa
Gas Rate: 16–199 MJ/h natural gas
Electrical Consumption: 68 W
Factory Default Temperature: 50°C / 60°C depending on model setup
Status Monitor: Yes
Connection Sizes: 20 mm hot, 20 mm cold, 20 mm gas
Dimensions: 531 mm high x 351 mm wide x 202 mm deep including brackets
Height Including Brackets: 571 mm
Weight: 15 kg
Warranty: 25-year extended heat exchanger warranty listed by Rinnai subject to scheduled servicing and warranty terms

Natural Gas Continuous Flow Hot Water

The Rinnai Infinity B26 Natural Gas is designed for homes connected to mains natural gas. It may suit larger homes, family homes, townhouses, investment properties and homes replacing an older external natural gas continuous flow hot water system.

Because this is the natural gas model, it must be matched to a suitable natural gas supply. Natural gas and LPG appliances are not interchangeable, so the correct gas type must be selected before ordering and installation.

Continuous Flow Performance

The B26 heats water on demand when a hot tap is opened. This means there is no stored hot water cylinder and no tank capacity to recover after use.

Its 26 L/min flow rate makes it a stronger choice than smaller continuous flow models where the home needs more hot water capacity. Actual performance depends on incoming water temperature, selected outlet temperature, pipework, fixture flow rates, gas supply and whether multiple outlets are used at the same time.

6.0 Star Equivalent Energy Rating

The Rinnai Infinity B26 Natural Gas has a 6.0 Star Equivalent Energy Rating. Continuous flow systems can be efficient because they heat water only when required, helping reduce standby heat loss compared with many storage tank systems.

Running costs still depend on household usage, gas pricing, outlet temperature, incoming water temperature, fixture flow rates and installation setup.

Puretemp™ Temperature Stability Technology

Puretemp™ temperature stability technology helps maintain steadier hot water temperature during normal operation. This is useful for households wanting more consistent hot water delivery from a larger natural gas continuous flow system.

Site conditions, fixture flow rates, gas supply and correct installation still play an important role in the final hot water performance.

Compact Outdoor Design

The Rinnai Infinity B26 Natural Gas has a compact wall-mounted design making it suitable for external installation where a large storage tank is not wanted or where space is limited.

The final position must comply with clearance, access, flue terminal, drainage, gas, plumbing and electrical requirements.

No Stored Tank

Because the B26 is a continuous flow system, it does not store hot water in a cylinder. This helps save space and makes it suitable for homes wanting an external wall-mounted hot water replacement.

There is no tank capacity to size, but the flow rate must suit the home’s hot water demand.

Optional Hot Water Controllers

The Rinnai Infinity B26 Natural Gas is compatible with optional Rinnai hot water controllers. Controllers can provide added convenience and temperature control where suitable.

Controllers are not included unless selected separately. Installation suitability and controller compatibility should be checked before purchase.

Outdoor Installation Only

This Rinnai Infinity B26 Natural Gas model is for external outdoor installation. Do not install this unit internally unless a manufacturer-approved internal or flued model is specifically selected for that purpose.

Outdoor installation must still meet clearance, ventilation, flue terminal, gas, plumbing and electrical requirements.

Water Pressure Requirements

The Rinnai Infinity B26 Natural Gas requires a minimum water pressure of 200 kPa and has a maximum listed water pressure of 1000 kPa.

If the property has high water pressure, pressure control may be required. If water pressure is too low, the unit may not operate correctly. Pressure should be checked as part of the installation assessment.

Gas Supply Requirements

The natural gas supply must be suitable for the appliance demand. The B26 has a natural gas rate range of 16–199 MJ/h.

A licensed gas fitter should confirm gas meter suitability, gas pipe sizing, appliance location and compliance requirements before installation.

Electrical Requirement

The Rinnai Infinity B26 Natural Gas requires power for operation and has a listed electrical consumption of 68 W.

Electrical access must be suitable for the installation location. Electrical work is not included unless separately quoted.

Rinnai Infinity B20 vs B26 Natural Gas

The Rinnai Infinity B26 Natural Gas is the larger option compared with the B20 Natural Gas and may suit homes needing more hot water flow capacity.

The B20 is generally suited to smaller homes or lower hot water demand. The B26 provides a higher 26 L/min flow rate, making it a stronger option for larger homes, one to two bathroom properties or households that need better performance when hot water demand is higher.

The right size depends on bathrooms, shower flow rates, incoming water temperature, number of users, natural gas supply and whether multiple outlets are used at once.

Rinnai Infinity B26 vs INF28 Internal

The Rinnai Infinity B26 Natural Gas is an external continuous flow model designed for outdoor installation. The INF28 Internal is a different model type designed for internal applications where a manufacturer-approved internal unit is required.

Do not use the B26 for internal installation. If the hot water system needs to be installed indoors, the correct internal or flued model must be selected and installed to manufacturer and compliance requirements.

Common Uses

The Rinnai Infinity B26 Natural Gas Continuous Flow Hot Water System can be suitable for:

• natural gas continuous flow hot water replacement

• external gas hot water system replacement

• one to two bathroom homes

• larger family homes

• townhouses

• rental properties

• investment properties

• renovation projects

• homes connected to mains natural gas

• homes needing stronger hot water flow than a smaller continuous flow unit

• homes wanting compact wall-mounted hot water

• homes replacing older natural gas instantaneous units

• homes wanting hot water heated on demand

Frequently Asked Questions

Can I buy the Rinnai Infinity B26 Natural Gas supply only?

Yes. You can buy the Rinnai Infinity B26 Natural Gas as a supply-only unit if you already have a licensed plumber and gas fitter arranged.

Does Hot Water Outlet install natural gas hot water systems?

No. Hot Water Outlet does not directly provide installation services. Customers may request assistance arranging installation quotes after purchase in selected metro areas.

Can I get the Rinnai Infinity B26 Natural Gas installed in Brisbane?

Customers in selected Brisbane areas may request assistance arranging installation quotes after purchase depending on location, access,site conditions and installer availability.

Can I get the Rinnai Infinity B26 Natural Gas installed in Gold Coast?

Customers in selected Gold Coast service areas may request assistance arranging installation quotes after purchase subject to service coverage and site suitability.

Is installation included in the product price?

No. The product price is for the unit only unless separately quoted. Installation, valve kits, disposal, old system removal, electrical work, gas fitting changes and other extras are not included unless arranged separately.

What gas type is this model?

This page is for the natural gas version of the Rinnai Infinity B26. Natural gas and LPG models are not interchangeable. Always select the correct gas type for your property.

Can the Rinnai Infinity B26 Natural Gas be installed indoors?

No. This model is for external outdoor installation. Internal installation should only be considered with a manufacturer-approved internal or flued model designed for that purpose.

What flow rate does the Rinnai Infinity B26 Natural Gas provide?

The Rinnai Infinity B26 Natural Gas provides 26 L/min at a 25°C rise and 26 L/min at a 20°C rise.

How many bathrooms does the Rinnai Infinity B26 Natural Gas suit?

It is generally suited to one to two bathroom homes and may suit up to three bathrooms in warmer climates depending on fixture flow rates, incoming water temperature, usage and site conditions.

What is the product code?

The listed product code is REU-BM2626W.

What are the water pressure requirements?

The listed minimum water pressure is 200 kPa and the maximum water pressure is 1000 kPa.

What is the minimum operating water flow?

The minimum operating water flow is 1.5 L/min.

What is the natural gas rate?

The listed natural gas rate is 16–199 MJ/h.

Does the Rinnai Infinity B26 Natural Gas need power?

Yes. The unit requires electrical power for operation and has a listed electrical consumption of 68 W.

What are the dimensions?

The listed dimensions are 531 mm high x 351 mm wide x 202 mm deep including brackets. The height including brackets is listed as 571 mm.

What does it weigh?

The listed unit weight is 15 kg.

What is the energy rating?

The Rinnai Infinity B26 Natural Gas has a 6.0 Star Equivalent Energy Rating.

Does it run out of hot water?

As a continuous flow system, it heats water on demand rather than relying on stored hot water. Ongoing hot water delivery depends on suitable natural gas supply, water flow, power, installation conditions and the unit being sized correctly for the home.

Can hot water controllers be added?

Optional Rinnai hot water controllers may be compatible. Controllers are not included unless selected separately.

Do I need a valve kit?

A valve kit may be required depending on the existing installation, local requirements and site condition. This should be checked before installation.

Is this a good replacement for an old natural gas hot water system?

Yes. It may be a suitable replacement for an old external natural gas continuous flow hot water system provided the gas supply, water pressure, location, clearances and compliance requirements are suitable.

What is the difference between the Rinnai B20 and B26 Natural Gas?

The B26 is the larger model with a higher 26 L/min flow rate, making it better suited to homes with higher hot water demand. The B20 may suit smaller homes or lower usage depending on site conditions.

What is the warranty?

Rinnai lists a 25-year extended heat exchanger warranty for the Infinity B26 subject to scheduled servicing and warranty terms. Always check the current warranty conditions before purchase.

Tempering Valve and Element Information

*Element size information:
All electric hot water units are supplied as standard with a 3.6kW element unless otherwise stated on the product page, invoice, or order confirmation.

If a different element configuration is requested, such as 1.8kW or 2.4kW, the hot water unit may still arrive with the standard 3.6kW element fitted from the manufacturer. The requested 1.8kW or 2.4kW element will be supplied separately with the order for installation by a suitably licensed electrical contractor or licensed electrical licence holder.

Any element changeover, electrical connection, disconnection, wiring, testing, or modification must be carried out by a licensed electrical contractor or licensed electrical licence holder. Elements must not be changed, connected, modified, or tested by an unlicensed person.

Alternative elements supplied for non-standard configurations may be generic replacement elements and may not be the same brand as the hot water unit unless specifically stated. Generic elements are supplied to suit the requested element size and electrical configuration, but final suitability must be checked by the licensed installer before installation.

1.8kW and 2.4kW elements supplied separately with a hot water unit include a 12-month supply-only parts warranty from the date of purchase, provided the element has been correctly installed by a licensed electrical contractor or licensed electrical licence holder and used under normal operating conditions.

This element warranty covers the replacement supply of the element only. It does not include labour, call-out fees, electrical work, plumbing work, fault finding, removal, reinstallation, testing, travel, downtime, damage caused by incorrect installation, or any other associated costs. Warranty may be declined where the element has been incorrectly installed, dry-fired, modified, damaged, connected to incorrect voltage or wiring, affected by power issues, used in unsuitable water conditions, or installed by an unlicensed person.

Proof of purchase, installer details, electrical licence details, photos, and/or return of the faulty element may be required before a warranty claim is approved.

**Tempering valve information:
Where a hot water system is capable of delivering water above 50°C, a compliant tempering valve must be installed to control the temperature delivered to personal hygiene fixtures such as showers, baths, basins, and bathroom outlets. This helps reduce the risk of scalding and assists with meeting plumbing compliance requirements.

A tempering valve blends hot and cold water to deliver a safer controlled outlet temperature to required fixtures. The hot water unit itself may store water at a higher temperature, but the water delivered to personal hygiene outlets must be controlled where required by plumbing regulations.

If your property already has a suitable, compliant tempering valve installed, your licensed plumber can assess whether it is appropriate for use with the new hot water system. Existing valves may not always be suitable due to age, condition, compliance requirements, valve type, location, or system compatibility.

If a compliant tempering valve is not already installed, or if the existing valve is unsuitable, one must be supplied and installed by a licensed plumber as part of the hot water installation.

Tempering valves are not automatically included with every supply-only hot water unit unless specifically selected, listed as included, or purchased as part of a suitable valve kit. If a tempering valve is required, please purchase the appropriate valve kit with your order or arrange for your licensed installer to supply and install the correct tempering valve on site.

It is the customer’s responsibility to ensure the installation is completed by appropriately licensed trades and that all required valves, fittings, electrical work, plumbing work, and compliance requirements are allowed for as part of the installation.

Buying a new hot water system or hot water part should be simple. Hot Water Outlet helps you compare hot water systems, valves, thermostats, elements, pipework and fittings in one place, so you can choose the products that suit your home, budget and hot water needs without the back and forth.

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Where relevant, you can add common hot water parts such as tempering valves, pressure relief valves, duo valves, non-return valves, thermostats, elements, pipework and fittings to help complete your order.

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Important Note

Product suitability can vary by property, existing services, energy source, gas type, available space, connection points, pressure requirements and local compliance requirements. Always check product specifications carefully and confirm the selected hot water system, valves, fittings and accessories are suitable for your property before ordering.

Standard Delivery: 2–8 business days

Express Delivery: 1–4 business days

90% of products are delivered the next business day where stock, postcode eligibility and freight availability allow.

Delivery timeframes are estimates and may vary by product, stock location, delivery postcode, carrier availability and order timing. Wet weather, storms, flooding or unsafe site access may delay delivery and are additional to any advertised or guaranteed freight timeframes.