Rinnai B20 LPG Gas Hot Water System

Rinnai B20 LPG Gas Hot Water System - Installed Today
Rinnai B20 LPG Gas Hot Water System - Installed Today

Rinnai B20 LPG Gas Hot Water System

Installed Today, Enjoyed Tomorrow. Seamless Service, Every Time
  • * 60Deg Unit May Require Restriction to 50Deg At Additional Cost
Regular price $999.00
  • Express Delivery to Metropolitan Cities
  • Over 90% of Systems Delivered Same Day
  • Secure payments
  • South East QLD Installation Available
  • Same Day Installation Option
  • In stock, ready to ship
  • Inventory on the way


Same day installation is only available business days (Monday-Friday EXC Public Holidays) with online purchases prior to 8am, all orders after 8am will be installed the following business day unless availability has been confirmed in writing prior. The installer will advise of installation time and where the customer is not available the installation will be moved to the following day.

All online packages are for a like for like (see definition below) EXTERNAL (outside building lines) replacement of existing compliant 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. All electrical hot water systems must be perpendicular to the wall with the electrical connection at the front and center facing forward.

All installations are for replacement of an existing system only (excluding water filters) and must be EXTERNAL to the building unless confirmed with installed today prior in writing. Please note where installed internally additional rates and conditions apply.

Installed Today will arrange a reputable installer to install your system when requested. All workmanship warranties will be between the purchaser and the installer. All product warranties will be handled by Installed Today.


Price for installation includes the valve kit only plus applicable basic sundries. Where required the installer will provide pricing for any additional work outside a standard like for like external installation not mentioned in rates below.

Please see rates below for any additional required work and all additional work is to be paid directly to the installer. Note some work may be mandatory to meet any legal or manufacturer requirements and will be added to your final invoice. Other work may be required if the selected system is not a like for like EXTERNAL replacement and only optional extras not required will be discussed prior to installation.

Where you require explicit costs prior to install please send a photo of the existing system to help@installedtoday for clarification at least 1 business day prior to installation if extra additional work is needed. Confirmation of photos being received and viewed will be sent via email.

Installers may send quotes reconfirming the rates below prior to install for approval along with same day payment conditions. Quoted installation rates apply only to payment at time of install of within 24hours of invoice issue only. Any discounts applied for prompt payment will be removed from quotes when paid outside the agreed time period. Any quotes issued will require approval prior to any installation taking place. 

Possible Mandatory Requirements for External Like for Like Replacements (added to invoice where legally or manufacturer required)
1. Gas main upgrades +$75pm
2. LPG Regulator Replacement - 250mj Manual +$250
3. LPG Regulator Replacement - 450mj Auto +$350
4. LPG Gas Bottle Restraint Set +$50
5. Additional pipework outside of package inclusions +$45pm supplied and fitted
6. Electrical extensions where the power does not reach the required connection point +$350
7. RCBO Safety switch where required if power is to be extended +$200
8. Internal Installations +$150
9. Internal Installations Requiring Safe Tray and Mildred Valve +$450
10. Water main location and/or subsurface relocation externally +$550
11. New concrete Support Bases +$80
12. New plastic pizza type support spacer +$50
13. Excavation $850m2
14. Element Swaps +$80
15. Fixture relocation or removal, inc access clearing or any disassembly required to access site (+$35 per 15minutes)
16. Two man install where access issues noted below are applicable and installation is not safe to be completed by a single person +$200

Optional Extras
17. Electrical new circuit +$600 includes circuit upto 10m in single phase
18. Hot water System Disposal exc Heat Pump and Solar +$80
19. Heat Pump/Solar system disposal +$120
20. Solar Removal from Roof Inc Crane Hire +$900
21. System Relocations inc Plumbing and Electrical +$1200
22. LPG Manifold - 3 Bottle +$200
23. LPG Manifold - 4 Bottle +$250
24. Key pickup and delivery for real estate +$75 per drop off/pickup

Two man install where access issues noted below are applicable and installation is not safe to be completed by a single person (+$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 maneuvered by hand trolley from vehicle to installation position without being carried. Confirmation from installed today in writing of access suitability where any of the above conditions apply.


Like for like replacement includes the following replacement types below ONLY. Note all systems are for replacement installation only in an external compliant position. Please confirm the system will fit in the desired position prior to purchasing. If in doubt please send pictures to help@installedtoday.com.au to confirm.

A. Gas storage replaced with Gas Storage

B. Continuous Flow replaced with Gas Storage

C. Continuous Flow replaced with Continuous Flow (Note power point must be reused and/or preinstalled)

D. Electric Storage replaced with Electric Storage

E. Electric Storage replaced with Heat pump 

F. Heat pump replaced with Heat pump

G. Heat pump replaced with Electric Storage (May require electrician to extend circuit at additional cost)

Tax included. Shipping calculated at checkout.

From our customers


Great service and price, will only use JR Gas and Water from now on. Joshua and Sean turned up exactly when they said they would, and Brandon and Lachlan fixed an issue with our shower in 5 minutes!

Brisbane, QLD

Josh arrived on time to replace a hot water system with a friendly and positive attitude. Josh explained the maintenance process and cleaned up after himself. Job was completed within a very short turn around time from engaging in their services. Professional, competitive company with excellent communication. A credit to Jarred's organisation from his website, quote and invoicing to his staff member Josh. Highly recommended.

Wen J
Brisbane, QLD

Very happy with JR Gas and Water, for a new Rheem Steller hot water system installed last week. Sean the installer was very polite and friendly, professional. Owner Jarrod very professional and helpful. We have used this Company twice in two years with two properties. Many thanks.

Jacqui K
Brisbane, QLD

What a great experience. Needing hot water replacement. JR Gas & Water provided quick, easy and well defined scope of works. They were quick to respond. Tradies keep me informed before, during and after the job. Sean and Mark did a great job. Workmanship excellent and the price was good. Highly recommended. JR Gas and Water set the standard for customer service. Great job, well done and highly satisfied. Enviro heat Pump is awesome.

K Hain
Brisbane, QLD

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Los Angeles, CA

Contacted JR Gas and Water this morning regarding a faulty hot water system. As promised by the person I was talking to (unfortunately do not remember his name) Sean and Josh arrived on time. They were extremely professional, polite and quick. Everything went smoothly and left my place in a spotless condition. Should I require their service again, I will not hesitate to contact them. Highly highly recommended. Thanks again guys, you are champions.

Brisbane, QLD

Jared, Sean and Mark has done a fabulous job installing a new hot water system for me. The whole process from quote to installation took less than a week and it's painless! Thank you team for your prompt and professional work! We highly recommend JR gas and water.

Fei F
Brisbane, QLD

Rinnai's B20 continuous flow hot water system: A guide to its efficiency and reliability

Are you looking for a solution to provide hot water that is sustainable? Rinnai B20 provides unlimited hot water to small and medium-sized homes while also being energy efficient. The article will explore the design of the Rinnai B20, the features that reduce operating costs and emissions and compare it to other options, so you can make an informed choice about your investment.

The Key Takeaways

  • Rinnai's B20 compact gas water heater is energy efficient and has a 6 star energy rating. It was designed to provide hot water on demand with the latest temperature control technology.

  • The system is available with flexible purchase options and professional installation will ensure the best performance and longevity of your system.

  • This system is an eco-friendly and economical solution to residential hot water requirements.

Rinnai's B20 is a compact and energy-efficient hot water solution.

Rinnai B20 20L continuous gas flow hot water system offers features such as:

  • Precisely designed to provide hot water at two faucets simultaneously

  • Its compact size makes it perfect for smaller to medium-sized houses

  • Efficient performance

  • 12 year factory warranty on heat exchangers, ensuring long-term customer satisfaction and reliability.

Rinnai's B20 is known for being energy efficient and heats the water on demand as it flows through. The energy consumption is significantly reduced compared to other electric water heaters which heat the water less efficiently. Rinnai’s Hot Water System Controllers such as the Universal Controller or Wireless Controller are compatible with B20, allowing for precise temperature control and convenience.

The Key Benefits and Features

Rinnai B20

  • Compact and convenient design

  • The 6-star rating for energy efficiency is a major selling point

  • The water is heated only when needed, resulting in less waste energy and lower bills

  • Perfect for medium to small homes

  • The continuous hot water flow is delivered without consuming too much room.

Rinnai offers a range of Hot Water System Controllers, temperature controller cables and other accessories to control the Rinnai B20. The compatibility of the Rinnai B20 adds convenience to your experience and allows you to control all aspects of hot water.

Japanese Design and Manufacturing of High Quality

Rinnai B20 is a product of Japanese quality design and manufacture. The Rinnai B20 is designed and meticulously manufactured in Rinnai’s high-tech, advanced facility to ensure endless hot water. High-quality components engineered to be durable are a testament to Japan's stringent manufacturing processes.

The B20 is subjected to a number of tests during its manufacturing process in order to ensure quality and reliability. The energy-efficient design of the Rinnai B20 focuses only on heating water when it is needed to reduce energy consumption. Materials used in the manufacture of Rinnai B20 come from Japan. This ensures its reliability and quality.

Installment and Payment Options

The following steps are required to install the Rinnai b20:

  1. Choose the appropriate location.

  2. Preparation of the installation site

  3. Please follow the instructions provided by your manufacturer.

  4. Ensure that you comply with standards like AS/NZS3000, AS/NZS3500 and AS/NZS.

Follow these steps to ensure maximum performance and safety.

The cost of professional installation for the Rinnai can range from $799 up to $1535.83 depending on your provider and additional services. It's worth the investment, however, because of its design which is energy efficient and reduces greenhouse gas emissions significantly compared with traditional hot water systems.

Rinnai B20 Hot Water System is $949. In certain areas, there are additional payment methods such as ZipPay and Openpay, which cater to different budgets.

Professional Installation

Professional installation is recommended to maximize system performance and increase its life span. The following are the benefits of this approach:

  • Installation according to the instructions of the manufacturer and standards applicable

  • Mitigate any possible risks

  • Ensure the longevity of your system

Rinnai B20 installers are required to complete specific courses covering installation, repair, and service of Rinnai commercial water heaters. This training will ensure that potential problems during installation such as issues with water flow and power supply can be addressed effectively.

Flexibility in Payment

Paying methods include:

  • Paypal

  • Zip

  • Humm

  • Transferring funds electronically via credit card (Visa and MasterCard)

The Rinnai B20 can be purchased using a prepaid card. The flexibility is designed to meet the needs of a variety of clients.

Rinnai's B20 hot water system can be purchased from a variety of retailers. These may offer different payment methods. You have more options when purchasing this reliable and efficient hot water system.

Reduce Greenhouse Gases Emissions, and Operating Costs

The Rinnai B20 is more than a simple hot water system. It represents an important step in the direction of a sustainable future. The Rinnai B20's high energy efficiency means that it can heat the water when needed, resulting in a reduction of energy use and greenhouse gas emissions compared with systems which constantly heat water.

The Rinnai B20 is not only highly energy efficient, it can also save you a lot of money. The Rinnai B20 is rated as a continuous flow LPG system with 6.5 stars, meaning that it offers higher energy efficiency and lower operating costs.

The Rinnai B20 offers a great value for money, with estimated running costs between $295 and $665 per year. This is an excellent choice for those who want to save energy without having to compromise on performance or efficiency. The Rinnai B20 is the ideal combination of environmental awareness and cost-effectiveness.

Reduced Emissions

Rinnai B20

  • It has been given a 6 star rating, which signifies its outstanding energy efficiency

  • Reduced emissions compared to traditional hot water systems

  • Natural gas is a fuel with high energy efficiency that helps reduce greenhouse gas emissions.

Rinnai's B20 is a:

  • Carbon dioxide emissions are reduced by up to 80% compared with conventional systems

  • An environmentally-friendly choice

  • Reduction in operating expenses

  • Reduce greenhouse gas emissions

  • A net positive environmental impact

Cost Savings

A typical family can save up to 65% on hot water bills by using the Rinnai instead of a conventional electric system. The Rinnai B20 is a very energy efficient option due to its significant savings in operating costs.

Rinnai B20:

  • Low running costs due to efficient energy consumption

  • Heat water efficiently and with a 6-star energy rating.

  • Energy bill savings while contributing to sustainability

Thermostat Controls and Safety Features

When it comes to the safety and comfort of your hot water system, nothing is more important. The Rinnai B20 combines Puretemp technology with safety features to provide a safe and comfortable hot water experience.

Puretemp is a technology that:

  • PCB-controlled system for a stable temperature of the outlet water

  • Reduce the risks of burns by implementing effective measures

  • Provide a temperature-control mechanism that is reliable.

Puretemp Technology for Temperature Stability

Rinnai B20 Puretemp Technology's Temperature Stability Technology regulates the PCB to ensure precise temperature control at outlet. The technology ensures optimal temperature stability and a comfortable, consistent hot water experience.

Puretemp Technology prevents accidental scalding by maintaining a constant water temperature. The Puretemp Technology ensures that you have a comfortable and safe hot water experience every time.

Safety Features

The Rinnai B20 places safety as a top priority. Flame failure protection, which automatically cuts off gas if the flame goes out, reduces gas leaks. The Rinnai B20 has a safe gas connection that ensures maximum performance and safety.

The Rinnai B20 also includes an overheat feature which gives priority to the Kitchen Water Controller when the temperature is above 50degC. The function maintains the temperature of water within safe limits to prevent scalding.

Compare the Rinnai b20 with Other Hot Water Solutions

You can enjoy the following benefits:

  • A tailored design for projects/builders

  • A heat exchanger built into the system provides exceptional energy efficiency

  • Consistent hot water at 20L/h

  • A user-friendly installation design

  • Construction robust

  • a 6+ star efficiency rating

The Rinnai B20 is a standout.

How does it compare with other models and hot water solutions in the Rinnai line?

Electric vs. Natural Gas Hot Water Systems

Comparing the Rinnai B20 to other electric water heaters, its energy-efficient features ensure that energy is only consumed when water needs heating. It results in less waste of energy, reduced utility bills and a reduction in greenhouse gas emissions.

Rinnai B20 and Other Rinnai models

Rinnai B20 is distinguished from the other Rinnai products primarily by its color variations, warranty, and pricing. It has the same energy rating, internal components and hot water capacity as other Rinnai models.

Rinnai is known for its quality, reliability, and dependability, no matter what model you select.

You can read more about it here:

Rinnai B20 is an environmentally-friendly, efficient and reliable solution to your hot water requirements. The compact design, low emissions, energy-efficiency, cost-savings, temperature control and safety features make this hot water system a great choice. The Rinnai is an excellent investment for a safe and comfortable home.


How hot is the Rinnai b20?

This Rinnai B20 is suitable for homes with one to two bathrooms. It operates at 60degC. The temperature of 60degC ensures that hot water is continuously available (no dates).

What causes my Rinnai heater to stop working?

It is possible that your Rinnai heater has stopped working because of a damaged, dirty or bent thermocouple. This sensor works in conjunction with the pilot light to maintain the safety of the heater. The thermocouple should be visible near the pilot flame.

How long does a Rinnai hot water system last?

Rinnai's gas-powered hot water systems last between 8 and 12 years. This is a testament to the company's energy-efficient, reliable products.

How much flow does the Rinnai B20 produce?

Rinnai's b20 has a flow rate ranging from 2.4L/min up to 24L/min. It also offers a 20L/min heating capacity at 25oC. It is therefore suitable for a wide range of water heating requirements.

The Rinnai B20 offers energy-efficiency benefits.

Rinnai B20 is rated at 6-stars for energy efficiency, meaning it only heats the water when necessary, leading to less waste of energy and lower bills.

    Installation Service (Optional):
    For your convenience, we offer an optional installation service through our network of trusted and professional contractors.

    How It Works:

    1. Select Installation Service: Indicate your interest in installation service during the checkout process.
    2. Payment for Installation: Pay for you installation with you system purchase.
    3. Contractor Assignment: We will assign a certified contractor from our network to handle your installation.
    4. Schedule Your Installation: The assigned contractor will contact you to schedule the installation at your convenience.
    5. Direct Support: For any questions or support related to the installation process, please direct your inquiries to the contractor first and if you are having issues with the contractor we are here to help.

    Please Note: Our role is to supply the product and facilitate the connection with a certified contractor for installation services.

    We are committed to ensuring your satisfaction both with our products and the installation service facilitated through our contractor network. For any product-related inquiries or assistance, please contact us.

    Experience the "Installed Today" Difference with Our Verified Installers

    When you choose "Installed Today" for your installation needs, you're not just getting a product; you're gaining access to a network of rigorously verified installers dedicated to providing you with an exceptional service experience. Here's what you can expect when you opt for an installation by an "Installed Today" verified installer:

    Professional and Efficient Service

    • Prompt Communication: Our verified installers will contact you within 2 business hours of receiving your order details to confirm and begin scheduling your installation at the earliest convenience.
    • Expert Installation: All "Installed Today" installers are highly skilled and qualified, ensuring your product is installed according to the highest industry standards and specific regulations in your area.
    • Clear and Professional Communication: From the moment they receive your order until the completion of your installation, our installers maintain clear and professional communication, providing you with all necessary information regarding your installation.

    Peace of Mind

    • Insurance and Liability: Every "Installed Today" verified installer maintains comprehensive insurance coverage, giving you peace of mind knowing you're protected throughout the installation process.
    • Warranty and Quality Assurance: Enjoy a warranty on your installation, guaranteeing rectification work at no additional charge in the unlikely event of any deficiencies. Our installers strive to achieve a minimum 4.5-star average rating across major review platforms, reflecting our commitment to excellence and customer satisfaction.

    Customer-Centric Policies

    • Customer Dispute Resolution: In the rare event of a dispute, our installers are committed to acknowledging and initiating the resolution process within 1 business day, aiming for a swift and satisfactory resolution within 5 business days.
    • Rectification Work Timeframes: Should any rectification work be necessary, it will be acknowledged within 1 business day and completed within 2 business days, ensuring minimal inconvenience to you.

    Additional Services at Transparent Rates

    • Beyond Basic Installation: Our verified installers offer a range of additional services to complement your installation. All available services and their set rates are communicated upfront, ensuring no surprises.

    By choosing "Installed Today," you're not just installing a product; you're investing in a seamless, quality service that values your time and peace of mind. Trust in our verified installers to exceed your expectations with their professionalism, expertise, and commitment to excellence.

    This product description outlines the benefits and assurances provided by "Installed Today" verified installers, designed to inform and reassure customers about the high level of service they can expect.


    Greater Brisbane and Gold Coast (EXCLUDING BAY ISLANDS) - 1 business day

    Metropolitan Cities - Up to 3 Business Days

    Non-Serviced Metropolitan Areas (confirmation via email to availability only) - Upto 10 business days


    Greater Brisbane and Gold Coast (EXCLUDING BAY ISLANDS) - Up to 2 business days

    Metropolitan Cities - Up to 4 Business Days

    Non-Serviced Metropolitan Areas (confirmation via email to availability only) - Upto 10 business days


    Greater Brisbane and Gold Coast - up to 5 business days

    Metropolitan Cities & Centres - Up to 10 Business Days



    -Gold Coast

    -Sunshine Coast


    -Coffs Harbour













    -Harvey Bay



    -Tweed Heads


    Brand - Rinnai

    Model - REU-A2024WB

    Volume (L) - 20

    Height (mm) - 571

    Width (mm) - 356

    Weight (kg) - 14.5

    Energy Rating - 6.0/6

    Made In - Japan

    Made By - Rinnai

    Maximum Warranty - 10years

    Internal Material - NA

    Noise Level (dBa) - NA

    Recommend Occupants - 1-7

    Recommended Bathrooms - 1-2

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