Rinnai B20 Gas Hot Water System $1299 Installed

Rinnai B20 Gas Hot Water System $1299 Installed


BASE RATE - Perfect for those who wish to install the exact make and model as their current system. NOTE the existing system must be compliant with current standards for this package to apply.

plus SILVER INCLUSIONS - Our Most Popular Package - Designed for those switching from a similar sized continuous gas system and wanting to upgrade the valve and pipework so its all new, complaint and working effectively. NOTE reusing old valves can effect your product warranty.

plus GOLD INCLUSIONS - For those needing a new regulator or tempering valve fitted to a non-50degree compliant unit. Perfect for those replacing a non-power assisted unit. Includes new pipework and valve set to suit.

plus PLATINUM INCLUSIONS - Designed for those wanting to replace and relocate their existing system to a new location, upgrading to a larger unit where the gas main needs to be increased in size or convert from a different system type.

STEP 1. - Select External Installation Replacement Package
STEP 2. - Select Preferred Installation Day
STEP 3. - Select Installation Area
Regular price $1,399.00 Sale price $1,299.00 Save $100
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  • Returns Available
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  • In stock, ready to ship
  • Inventory on the way

All online packages are for a like for like, EXTERNAL (outside building lines) replacement of existing installation only and installation fees do not cover relocating the system, upgrades to current standards, electrical supply alterations outside of a standard disconnect/reconnect, upgrades due to insufficient gas, water or power supplies or repairs of any kind outside of the hot water system UNLESS they are included the purchased package.

For all internal installations please complete our quote request form. https://clienthub.getjobber.com/client_hubs/2656845f-c248-4532-bae6-dc151651823b/public/work_request/new?source=social_media

All electrical hot water systems must be perpendicular to the wall with the electrical connection at the front and centre facing forward. unless a relocation package has been purchased.


Two man install will be required where access issues noted below are applicable and installation is not safe to be completed by a single person will be an additional $200. Access for installation is to be free of stairs, steep driveways, through homes, over retaining walls, in ceilings. Unit must be able to be maneuverer by hand trolley from vehicle to installation position without being carried. Confirmation from JR in writing of access suitability where any of the above conditions apply. For restricted access installations we recommend completing our quote request form and sending photos prior. https://clienthub.getjobber.com/client_hubs/2656845f-c248-4532-bae6-dc151651823b/public/work_request/new?source=social_media

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Efficient and Reliable: Your Guide to the Rinnai B20 Continuous Flow Hot Water System

Looking for a sustainable hot water solution? The Rinnai B20 not only provides endless hot water for small to medium homes but does so with impressive energy efficiency. This article dives into the system’s design, its features to reduce running costs and emissions, and how it compares to alternatives, giving you the insights to make an informed decision on your hot water system investment.

Key Takeaways

  • The Rinnai B20 is a compact, energy-efficient gas hot water system with a 6-star energy rating, designed for small to medium homes, providing on-demand hot water with advanced temperature control technologies.

  • It offers flexible payment options for purchase and requires professional installation to ensure optimal performance, adherence to safety standards, and system longevity.

  • The system significantly reduces greenhouse gas emissions and running costs compared to traditional hot water heaters, making it an environmentally friendly and cost-effective solution for residential hot water needs.

Discover the Rinnai B20: A Compact and Energy-Efficient Hot Water Solution

The Rinnai B20 is a 20L b20 continuous flow gas hot water system that offers the following features:

  • Precisely engineered to supply hot water to two taps simultaneously

  • Compact size, making it ideal for small to medium-sized homes

  • Efficient performance

  • 12-year factory heat exchange warranty, providing long-term reliability and customer confidence.

The Rinnai B20, known for its energy efficiency, heats water as it passes through the unit, on demand. This significantly reduces energy waste in comparison to electric hot water heaters that heat water in a less efficient manner. The B20 is also compatible with Rinnai’s range of Hot Water System Controllers, such as the Universal Controller and Wireless Controller, providing precise temperature management and added convenience.

Key Features and Benefits

The Rinnai B20:

  • Conveniently designed and compact

  • Boasts a 6-star energy efficiency rating

  • Heats water only when required, leading to less energy waste and lower utility bills

  • Ideal for small to medium-sized homes

  • Ensures continuous flow hot water delivery without taking up too much space

For precise temperature management, control over the Rinnai B20 can be achieved using Rinnai’s range of Hot Water System Controllers and temperature controller cables. This compatibility adds to the overall convenience and user experience, allowing you to have complete control over your hot water needs.

Quality Japanese Design and Manufacturing

High-quality Japanese design and manufacturing is evident in the Rinnai B20. It is meticulously crafted in Rinnai’s advanced high-tech facility, designed to provide endless hot water for residential use. The high-quality componentry engineered for durability attests to the stringent manufacturing process in Japan.

The B20 undergoes a series of testing procedures during the manufacturing process to guarantee its quality and reliability. Its energy-efficient design focuses on heating water only when needed, reducing energy consumption. The materials used to manufacture the Rinnai B20 are sourced from Japan, further ensuring its quality and reliability.

Installation and Payment Options

Installing the Rinnai B20 requires the following steps:

  1. Select an appropriate location.

  2. Prepare the installation area.

  3. Follow the manufacturer’s instructions.

  4. Ensure compliance with relevant standards such as AS/NZS 3000, AS/NZS 3500, and AS/NZS.

Following these steps will ensure optimal performance and safety.

Costs for professional installation of the Rinnai B20 can vary, typically ranging from $799 to $1535.83, depending on the provider and any additional services required. But considering its energy-efficient design that helps reduce greenhouse gas emissions substantially compared to traditional hot water systems, it’s a worthy investment.

The Rinnai B20 hot water system is available for purchase at $949 AUD. To make it more affordable, additional payment options such as Humm, ZipPay, and Openpay are available in specific areas, catering to diverse budgets and needs.

Professional Installation

To optimize system efficiency and extend its lifespan, professional installation of the Rinnai B20 is highly recommended. This approach guarantees:

  • Correct installation in accordance with the manufacturer’s instructions and applicable standards

  • Mitigation of any potential risks

  • Ensuring the system’s longevity

Installers of the Rinnai B20 are required to undergo specific training courses that encompass installation, service, and repair of Rinnai’s commercial water heater range. The training ensures that any potential challenges during the installation, including issues with power supply, water flow, and error codes, can be effectively addressed, ensuring a smooth installation process.

Flexible Payment Options

Payment methods such as:

  • PayPal

  • Zip

  • Humm

  • Electronic funds transfer via Credit Card (Visa or MasterCard)

can be used to purchase the Rinnai B20. This flexibility aims to cater to a wide range of customers and their varying financial needs.

Moreover, the Rinnai B20 can also be acquired from third-party retailers, which may provide diverse payment options. This means you have more choices when it comes to purchasing this efficient and reliable hot water system.

Reducing Greenhouse Gas Emissions and Running Costs

More than just a hot water system, the Rinnai B20 represents a step towards a more sustainable future. Its energy efficiency allows it to heat water only when necessary, leading to decreased energy consumption and a significant reduction in greenhouse gas emissions when compared to systems that are only heating water constantly, regardless of need.

Not only does the Rinnai B20 demonstrate superior energy efficiency, but it also results in substantial cost savings. It holds a 6-star continuous flow LPG hot water system rating, which means higher energy savings and lower running costs.

With estimated annual running costs ranging from $295 to $665, the Rinnai B20 is a cost-effective choice for users aiming to reduce energy expenses without compromising on efficiency or performance. It’s the perfect blend of cost-effectiveness and environmental consciousness.

Lower Emissions

The Rinnai B20:

  • Is awarded a star rating of 6, signifying its exceptional energy efficiency

  • Results in reduced emissions in comparison to conventional hot water systems

  • Utilizes natural gas, a highly energy-efficient fuel that contributes to the reduction of greenhouse gas emissions.

The Rinnai B20 provides:

  • Substantial annual carbon dioxide savings in comparison to conventional hot water systems

  • An environmentally-friendly choice

  • Reduction in operating expenses

  • Reduction in greenhouse gas emissions

  • A net positive environmental impact

Cost Savings

When using the Rinnai B20 instead of conventional electric hot water systems, a typical household can achieve savings of up to 65% annually on their hot water costs. This significant reduction in running costs makes the Rinnai B20 a highly energy-efficient option compared to other hot water systems.

The Rinnai B20 offers:

  • Efficient energy consumption resulting in low running costs

  • 6-star energy rating and efficient operation for minimal energy consumption when heating water

  • Savings on energy bills while contributing to a sustainable environment

Temperature Control and Safety Features

Comfort and safety are paramount when it comes to your hot water system. For a comfortable and secure hot water experience, the Rinnai B20 incorporates Puretemp temperature stability technology and safety features.

The Puretemp technology encompasses:

  • A PCB controlled system that ensures a consistently stable outlet water temperature

  • Effectively reducing the risk of scalding

  • Providing a reliable temperature control mechanism.

Puretemp Temperature Stability Technology

Through PCB regulation, the Rinnai B20’s Puretemp Temperature Stability Technology ensures precise control of outlet water temperature. This technology guarantees optimal temperature stability, providing a consistent and comfortable hot water experience.

By maintaining consistent water temperature, the Puretemp Technology helps to prevent accidental scalding. This safety measure ensures a more secure and comfortable hot water experience, providing peace of mind every time you turn on the tap.

Safety Features

Safety is a priority with the Rinnai B20. The flame failure protection feature, designed to automatically cut off the gas supply if the burner flame extinguishes, mitigates the risk of gas leaks and related safety hazards. With a secure gas connection, the Rinnai B20 ensures optimal performance and safety.

Additionally, the Rinnai B20 includes an overheat protection feature that reallocates ‘priority’ to the Kitchen Water Controller if the temperature exceeds 50°C. This function is designed to maintain the water temperature within safe parameters to avoid scalding, ensuring your hot water experience is as safe as possible.

Comparing the Rinnai B20 to Other Hot Water Solutions

With advantages like:

  • a tailored design for builders/projects

  • exceptional energy efficiency through a built-in heat exchanger

  • consistent hot water supply at 20L/min

  • a user-friendly design for easy installation

  • robust construction

  • a 6+ star efficiency rating

the Rinnai B20 stands out.

But how does the best hot water solution compare to other hot water solutions and models within the Rinnai range?

Natural Gas vs. Electric Hot Water Systems

The Rinnai B20’s energy-efficient design, when compared to electric hot water systems, ensures energy is consumed only when heating water as needed. This leads to less energy waste, lower utility bills, and reduced greenhouse gas emissions, making it a more environmentally sustainable choice.

Rinnai B20 vs. Other Rinnai Models

The Rinnai B20 distinguishes itself from other Rinnai models primarily through variations in color, pricing, and warranty. However, it maintains identical energy ratings, internal components, and hot water output capacity when compared to other models in the range.

Regardless of the model you choose, with Rinnai, you can expect quality and reliability.


In conclusion, the Rinnai B20 offers an efficient, reliable, and environmentally friendly solution for your hot water needs. Its compact design, energy efficiency, lower emissions, cost savings, temperature control, safety features, and flexible payment options make it a standout choice among hot water systems. Whether you’re building a new home or upgrading your current hot water system, the Rinnai B20 is a worthy investment towards a comfortable, safe, and sustainable living.

Frequently Asked Questions

What temperature is the Rinnai B20?

The Rinnai B20 operates at a temperature of 60°C, making it suitable for one or two bathroom homes. This temperature ensures a continuous flow of hot water (no date).

Why does my Rinnai gas heater keep stopping?

Your Rinnai gas heater may be stopping due to a dirty, bent, or damaged thermocouple, which is a safety sensor that works with the pilot flame to ensure the heater's safety. Check if the thermocouple is easily visible next to the pilot light.

How long do a Rinnai gas hot water systems last?

Rinnai gas hot water systems typically last 8 to 12 years, showcasing the brand's reputation for energy-efficient and reliable products.

What is the flow rate of the Rinnai b20?

The flow rate of the Rinnai b20 ranges from 2.4L/min to 24L/min, with a heating capacity of 20L/min at 25oC. This makes it suitable for various water heating needs.

What are the energy efficiency advantages of the Rinnai B20?

The Rinnai B20 has a 6-star energy efficiency rating, which means it heats water only when needed, resulting in less energy waste and lower utility bills.

Brand - Rinnai
Model Number - REU-A2024WB
Volume - 20L
Width - 356mm
Height - 571mm
Manufactured In - Japan
Cylinder/ Heat Exchange Material - NA
Cylinder/Heat-Exchange Warranty - 12 Years
Noise Level - NAdBa
Dry Weight - 15kg
Energy Source - Natural Gas or LPG
Wifi Controller Built in or Compatible - No
Built In Timer - No
LED/LCD Status Indicator - No
Coefficient of Performance (COP) -

If you're in Queensland and considering a new electric hot water system, JR Gas & Water is the company to choose. Here's why:

Experience and Expertise: JR Gas & Water has over 10 years of experience in the gas and plumbing industry. Their team of licensed and insured professionals is highly skilled and knowledgeable about all aspects of electric hot water system installation, maintenance, and repair. They can provide expert advice on the best system for your needs and ensure a smooth installation process.

Quality Products: JR Gas & Water uses only high-quality products from trusted brands to ensure your electric hot water system is reliable and efficient. They also offer a range of options to suit different budgets and requirements.

Competitive Pricing: JR Gas & Water offers competitive pricing for their electric hot water systems, ensuring that you get a great value for your investment. They also provide a detailed quote upfront, so there are no surprises or hidden costs.

Customer Service: JR Gas & Water is committed to providing excellent customer service. They are always available to answer any questions or concerns you may have and are committed to ensuring your satisfaction.

Local Business: JR Gas & Water is a locally owned and operated business in Queensland. By choosing them for your electric hot water installation, you are supporting a local business and contributing to the local economy.

Warranty and Guarantee: JR Gas & Water provides a warranty and guarantee on all their products and services, giving you peace of mind knowing that your system is covered in case of any issues.

Energy Efficiency: Electric hot water systems can be energy efficient, and JR Gas & Water can help you choose the right system for your needs. They can provide advice on energy-saving features and options, such as timers and thermostats, to help you save on your energy bills.

Safety: JR Gas & Water is committed to safety and ensuring that all installations are done to the highest safety standards. They are also familiar with local safety regulations and requirements, ensuring that your electric hot water system is installed safely and in compliance with all relevant codes.

JR Gas & Water is a reliable and experienced choice for your electric hot water system installation in Queensland. With a commitment to quality products, competitive pricing, excellent customer service, and safety, they can help you make the switch to a more efficient and cost-effective solution for your hot water needs. Contact them today to learn more about their services and how they can help you.

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An electric storage hot water system is a traditional way to heat water for domestic use. It works by heating water in a storage tank using an electric heating element.

The benefits of installing an electric storage hot water system include reliability, ease of installation, and low upfront costs.

The cost of installing an electric storage hot water system in Australia can vary depending on factors such as the size of the system, the complexity of the installation, and the location of the property. On average, prices range from $800 to $2,000.


The installation time for an electric storage hot water system can vary depending on the complexity of the installation and the size of the system. On average, installation can take between 2-4 hours.

Yes, like all hot water systems, electric storage hot water systems require regular maintenance to ensure they are working efficiently and to prolong their lifespan. This includes checking the system's thermostat, cleaning the tank, and checking the heating element.

Electric storage hot water systems typically last between 10-15 years, although this can vary depending on the quality of the system, the frequency of maintenance, and the level of usage.

Yes, electric storage hot water systems can be installed in most types of properties, including residential homes, commercial buildings, and apartments.

Yes, installing an electric storage hot water system can have environmental impacts, such as increasing greenhouse gas emissions and energy usage. However, newer models with higher energy efficiency ratings can reduce these impacts.

Choosing the right size electric storage hot water system for your property will depend on several factors, including the number of people in the property, the level of hot water usage, and the climate in the area. A qualified installer can help you determine the right size system for your needs.

Reviews From Our Customers


Great service. We were about to move into a house without hot water! Were able to get to us urgently and have us up and running. Professional, friendly service! Reasonable pricing too.


The JR Gas and Water team was very professional and friendly. They arrived on time and exchanged my hot water system within 2 hours. Will definitely use them again in the future.


Not only is the service incredible, the quality of the work is too! The digital quotes are detailed, so you know exactly what you are paying for (and why). Jarred was prompt, efficient, and highly skilled.


I called JR Gas and Water at 9.30 Saturday morning and he arrived at appointment time 11.30 Saturday morning.
Job complete, waste and packaging removed.
Highly recommend this service.
Super Friendly, very efficient.


I recently contacted JR Gas & Water as I needed a new electric hot water system suppled and installed. Their website is informative and easy to navigate and the quote and booking process very straight-forward. The service I experienced from my initial phone enquiry with Jay all the way through to the punctual and professional installation by Sean was absolutely amazing! The service provided far exceeded my expectations. I highly recommend JR Gas & Water.


Accurate on time and easy to read quotes. They arrived on schedule and we’re in and out with hot water going again in no time. There was no mess left behind it was easy and hassle free


Very informative in helping me choose a hot water system that suited my needs. Competitive prices. Quick and reliable service.Happy with my product and highly recommend this company for your hot water needs


JR Gas and Water were fast, efficient and very reliable. They sent a quote quickly that was itemised and comprehensive. I was able to approve the quote online and they were out the next day to fit the new hot water system. As the family have a very ill family member we were all very grateful. We had tried another service just before this company and they were all over the show with lots of comments about "extras", after providing an initial quote. So glad we changed to JR Gas and Water!


You wont see reviews this good anywhere else.

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BuyNow Pay Later with HUMM, ZipPay & Openpay

Pay your way.

Pay your way.

Pay your way.

BuyNow Pay Later with HUMM, ZipPay & Openpay
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