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Rinnai Gas, Electric & Continuous Flow Hot Water Systems

Rinnai hot water logo.

Mr Plumber is your trusted hot water system specialist in South East Melbourne. Our team of experienced professionals are committed to providing a range of services for Rinnai hot water systems, from installation to repair work. We understand that a well-functioning hot water system is essential for the daily lives of our customers, so we strive to provide you with the best service possible.

With years of experience in this industry, Mr Plumber has received positive reviews from many satisfied clients who have enjoyed the peace of mind that comes with knowing they can rely on us to handle all their needs when it comes to hot water systems. 
We specialise in installing and repairing all types of Rinnai units, including Rinnai Heaters, both gas and electric. Enjoy the brand new Rinnai Infinity 26, delivering instant hot water whenever you need it. Or you can also have a Rinnai Avenger 25 installed in your home if you want a more affordable option.
As experts in our field, we ensure that each job is completed quickly and efficiently with minimal disruption or inconvenience. Give Mr Plumber a call today!

Rinnai Hot Water Systems

Rinnai infinity 26.

Rinnai hot water systems are one of the most popular hot water solutions on the market. These energy-efficient systems provide a reliable source of heated water that can be used throughout the home, providing ultimate convenience and comfort. Rinnai hot water systems are designed to meet all household needs, from small studio apartments up to large family homes.

  • Rinnai Infinity 26: Rinnai Infinity 26 uses a co-axial flue system to easily “room seal” your appliance and make it easy to install anywhere. Has an impressive 6.1-star energy rating. Compatible with lower-pressure shower fittings.

  • Rinnai Avenger 25: The Rinnai Avenger 25 is the perfect heating solution for large, open-plan living areas. Compatible with both LPG and natural gas. Remote controlled, allowing you to adjust the heating settings from anywhere in the room with the simple click of a button.

  • Rinnai B26: This Rinnai hot water system comes with a 10-year warranty. Has the same energy rating as Infinity 26, which is 6.1 stars. Requires a tempering valve.

  • Rinnai B 20: It is designed with energy efficiency in mind and has earned an impressive 6.1-star rating for its ability to reduce power consumption without compromising on hot water delivery. Can deliver up to 20L/minute. Compatible with low-flow shower heads. 

  • Rinnai Enduro 13: This Rinnai gas-powered heater packs a powerful output despite its small size. With its adjustable thermostat settings, this small yet powerful Rinnai Enduro 13 has everything you need for your home or office heating needs!


Mr Plumber is the go-to choice for anyone looking to install a Rinnai hot water heater. Not only do we specialise in hot water system installation, but we can also provide expert advice on which type of Rinnai hot water system is compatible with your existing plumbing setup. 

Popular Rinnai Hot Water System Models

Two of the most popular Rinnai hot water system models are the Rinnai Infinity 26 and the Rinnai Avenger 25. Both models feature high-quality components and provide excellent performance for residential or commercial applications.

Rinnai Hot Water System Reviews

Woman's hand ticked on 5 stars review.

Rinnai is one of the leading brands in hot water system technology, and its products are known for their durability, efficiency, and reliability. When it comes to Rinnai hot water system reviews, most consumers come away with very positive experiences.

Customers, in particular, praise Rinnai Infinity 26’s sleek design and small size. Many users note that installation is a breeze compared to other gas hot water systems and that the unit itself takes up very little room in their home or apartment. 

Comparing Rinnai Hot Water Systems & Prices

Rinnai hotflow 126l.

When shopping for a Rinnai electric hot water system, you must compare prices to ensure you get the best deal possible. It is also important to think about your budget and how much you can afford to spend on a new system and its installation.

  • Rinnai Infinity 26: is a high-performance, continuous-flow hot water system that delivers an impressive 6.1-star energy rating. This makes it one of the most efficient of its kind on the market today, as you can enjoy hot water without having to worry about unnecessary energy consumption or increased electricity bills. The price starts at around $1700.

  • Rinnai Hotflo 160L: comes with an enamel-lined steel tank, adding to its durability and ensuring it will last for years to come. Ideal for larger households and businesses that require bigger volumes of hot water in shorter periods. Costs around $800.

  • Rinnai 315L: has a 10-year warranty on its cylinder. The pressure-temperature relief valve included in the package provides an additional layer of safety and security against unwanted accidents or malfunctions. Has an estimated cost of around $1000.

It pays to get the right quote when it comes to the cost of installing a hot water system. Mr Plumber is an experienced provider of hot water systems and we can provide you with the most cost-effective options for your needs.

Rinnai Hot Water Installation Service Melbourne

Plumber's adjusting installation hot water system.

Mr Plumber has become an industry leader when it comes to offering all types of Rinnai hot water services in Melbourne. Our plumbing company is well-known for our prompt and reliable service, with experienced technicians who can provide top-quality installation and repair for any kind of hot water system in Melbourne CBD.

Our qualified plumbers are available 24/7 to attend to any plumbing emergencies in the eastern suburbs of Melbourne, offering professional advice on all kinds of Rinnai hot water systems. We also serve the south east suburbs of Melbourne.


With our professional Rinnai hot water installation service, you can immediately enjoy increased comfort in your home with the added convenience of hot water on demand.


Call Mr Plumber right away for any Rinnai hot water service in Melbourne.

Mr Plumber is an Experienced Rinnai Supplier and Installer for Melbourne

Mr Plumber logo.

Mr Plumber is the leading Rinnai supplier in Melbourne CBD. We also offer professional hot water installation services around the South East Melbourne area. Our licensed plumbers have years of experience in hot water servicing, from the most basic to complex configurations.


Our installation services cover the two most popular units in the brand’s range, Rinnai Infinity 26 and Rinnai Avenger 25 hot water systems. Both models are highly efficient, helping reduce energy costs and green gas emissions.

Upgrade your home’s water heating system and install a Rinnai today with Mr Plumber’s help. Book your Rinnai hot water installation on 1800 758 623.

Book Your Rinnai Hot Water Installation

Enjoy the convenience of having hot water whenever you need it. Book your Rinnai hot water installation with Mr Plumber today! We offer a range of services to make sure you get the most out of your system, no matter what size or type of property you own. 


Our team is highly experienced in installing Rinnai systems and can provide a tailored solution that meets your needs. 
Visit our booking page or call 1800 758 623.

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Frequently Asked Questions About Rinnai Hot Water Systems

How Long Does a Rinnai Hot Water System Last?

Frequently Asked

A Rinnai hot water system is the perfect solution for any household looking for reliable and energy-efficient hot water. It's estimated that a typical Rinnai hot water system will last up to 10-15 years, with proper maintenance and care.

How Much Does It Cost to Install a Rinnai?

The main factor in determining the cost is the type of system you choose to install. Rinnai offers several different models depending on your budget and needs. Prices can range from around $1,000 up to $8,500 or more depending on which model you select. Installation costs will also vary according to the area and complexity of the job but can be anywhere from $500-$2,500 or more, again depending on your circumstances.

Where to Find a Rinnai Certified Plumber in Melbourne?

Mr Plumber is your go-to certified Rinnai plumber in Melbourne. With over decades of experience as a leading plumbing service provider, Mr Plumber is trusted for all Rinnai hot water repairs and installations. Our team of qualified technicians are experts in the latest technologies, including repairing and installing all types of Rinnai systems.

Are Rinnai Water Heaters Any Good?

Rinnai hot water systems have proven to be reliable and effective when it comes to giving you hot water at the turn of a tap. Homeowners, landlords and business owners alike love these water heaters due to their reliability, affordability and energy efficiency.


Whether you have a tankless or traditional tank version, these models feature a durable stainless steel construction that will withstand rusting and corrosion for years. The innovative technology also ensures that your hot water is produced quickly with minimal energy waste; saving you time and money in the process.

Do Rinnai Water Heaters Need Maintenance?

Rinnai water heaters, just like any other complex household appliance, require regular maintenance to keep them running smoothly and efficiently. Without proper maintenance, a Rinnai water heater can suffer from decreased performance, reduced lifespan and potentially hazardous conditions.

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