MPJ Plumbing

Rinnai Hot Water System

In both residential and commercial buildings, access to a reliable source of hot water is no longer a convenience, but a necessity. Whether it’s washing the dishes, taking a relaxing bath, or doing the laundry, hot water is essential to our work, high standard of living and our general wellbeing.

While homes have seen a variety of different heating methods over the years, Rinnai hot water systems are regarded among the very best. Rinnai hot water systems are renowned for their energy efficiency and have been carefully designed to meet the needs of Australian households and businesses.

The team at MPJ Plumbing Hot Water are experts at the installation of Rinnai Hot Water Systems and can help advise you on what solution is best for you. With decades of combined experience, we can also provide timely and professional maintenance and repairs on Rinnai systems.

Why choose Rinnai for your hot water system in Sydney?

Rinnai enjoys a reputation for producing highly efficient, reliable hot water systems with the company’s first offering launching in the early 1990s.

An industry leader, Rinnai was the first to release a fully electronic gas continuous flow hot water system in Australia, capable of handling the country’s unique challenges and meeting consumer demand. The system was the first to allow Australian homes to enjoy an uninterrupted supply of hot water with Rinnai continuing to innovate ever since.

Today, Rinnai remains at the forefront of hot water, heating, and cooling innovation. The key benefits of Rinnai’s hot water solutions include

  • High-efficiency: Rinnai systems are designed to waste no energy, heating water on demand and shutting down when not in use.
  • Continuous hot water: Rinnai offers hot water systems that heat water on demand. This means water is heated as and when you need it with no interruptions to your supply.
  • Precision heating: No more guesswork; Rinnai systems allow the water temperature to be precisely set using digital controllers that regulate heating accurately.
  • Cost-savings: Rinnai’s range of systems each comes with different cost-saving measures, including the use of renewable energy.
  • Built to last: Rinnai’s systems are designed to last up to twenty years or more, making them excellent value for money.

Rinnai's Range of Hot Water Solutions

With three decades of experience producing hot water systems for the Australian market, Rinnai has solutions for every household and business. Leveraging different water delivery systems and energy sources, Rinnai’s solutions include

Rinnai Electric Hot Water Systems

Rinnai’s electric hot water systems use mains powered to heat water for domestic as well as commercial purposes. These electricity-powered hot water come in two configurations, with instantaneous and storage solutions on offer.

Rinnai Gas Hot Water Systems

Rinnai’s gas-powered water heaters use LPG or natural gas to power a burner that either heats water on demand via a continuous flow system or heats water ahead of time with a storage solution.

Most gas hot water systems will require a mains supply of gas in order to be installed, with select products compatible with LPG cylinders.

Rinnai Instant Hot Water Systems

Removing the need for a tank, instant hot water systems deliver water at your pre-set temperature on demand. Rinnai’s instant hot water products channel water through a heat exchanger at a rate of 10-32 litres per minute before arriving at your tap. This provides a continuous, uninterrupted supply of hot water at a rate suitable for most households.

Rinnai Solar Hot Water System

With a focus on efficiency, Rinnai also has on offer some products that make use of renewable energy. Making good use of the sun’s ample, free energy, Rinnai’s solar hot water systems see solar panels absorb heat using panels and tubes. This is then used to heat water collected in a storage cylinder.

The Rinnai Hot Water Systems MPJ Plumbing Can Install and Repair in Sydney

MPJ Plumbing offers a complete hot water installation and repair service to the residents and businesses of Sydney and the surrounding areas. Our team have expert knowledge of Rinnai’s entire range of products, with the following being the most commonly installed:

Rinnai’s Infinity range is a series of continuous flow, tankless water heating units that are suitable for domestic properties, as well as commercial purposes such as pubs, cafes, shops, and offices. They offer high energy efficiency and cost-saving benefits and are available in both electric and gas models.

  • 6.2 Star energy rating
  • Continuous hot water supply
  • Precise temperature control
  • Puretemp™ temperature stability technology
  • Electric, LPG or natural gas models available
The eco-Infinity Enviro is Australia’s most efficient hot water system. This condensing unit heats water as you need it to provide a continuous supply while using considerably less gas than other products. The Infinity Enviro comes in both a 26 and 32-litre flow rate model and reduces greenhouse gas emissions by around 84%.
  • 7.0 Star energy rating
  • Continuous hot water supply
  • Precise temperature control
  • 12-year heat exchanger warranty
  • Puretemp™ temperature stability technology
  • LPG or natural gas models available
  • Built-in condensate neutraliser kit
  • 26 litres and 32-litre models available

Delivering a hot water solution for large households, the HOTFLO gas hot water storage system heats either a 135-litre or 170-litre tank of water ahead of time using natural or propane gas. MPJ Plumbing will install the unit on the exterior of your property where it can deliver up to 209 litres of hot water an hour.

  • 4.7 Star energy rating
  • 135 and 170-litre models available
  • Vitreous Enamel lined steel tank for durability
  • Extended tank life with anode protection built-in
  • Pressure temperature relief valve for safety
  • External solution
  • Safety thermostat included as standard
  • Natural and Propane gas models available
  • 7-10 year warranty available
Designed to accommodate the demands of larger households with mains electricity as their primary power source, the HOTFLO electric hot water system uses a large capacity tank to deliver 250 litres of hot water at any one time. The system comes in 2.4 kW, 3.6 kW, and 4.8  kW models allowing MPJ Plumbing to ensure your property never runs out of hot water.
  • Slim and compact models available
  • Vitreous Enamel lined steel tank for durability
  • Extended tank life with anode protection built-in
  • Pressure temperature relief valve for safety
  • Internal and external options available
  • Safety thermostat included as standard
  • 7-10 year warranty available
Designed to accommodate the demands of larger households with mains electricity as their primary power source, the HOTFLO electric hot water system uses a large capacity tank to deliver 250 litres of hot water at any one time. The system comes in 2.4 kW, 3.6 kW, and 4.8  kW models allowing MPJ Plumbing to ensure your property never runs out of hot water.
  • Slim and compact models available
  • Vitreous Enamel lined steel tank for durability
  • Extended tank life with anode protection built-in
  • Pressure temperature relief valve for safety
  • Internal and external options available
  • Safety thermostat included as standard
  • 7-10 year warranty available

Delivering hot water as and when you need it, the Rinnai Flowmaster is a high-efficiency solution capable of servicing remote properties, cut off from mains electricity power. With a sleek and space-saving design, the system is capable of providing a continuous supply of hot water at a rate of up to 10 litres per minute using natural gas or LPG.

  • 5.6 Star energy rating
  • 10 litres per minute of hot water @ 25°C rise
  • Battery-powered ignition
  • Sleek and space-saving design
  • 3-year parts and labour warranty
  • 10-year heat exchanger warranty
  • Natural gas or LPG models available
  • Puretemp™ water delivery technology inbuilt to provide a perfectly constant outlet water temperature
  • Minimum flow rate of 2.9 litres per minute

Prestige Systems - Solar Hot Water System

Rinnai’s Prestige range of Solar Hot Water systems have been designed with energy efficiency in mind. They optimize electricity consumption, minimize running costs, and reduce your household’s overall environmental impact by more than 65%.

There are three types of Prestige systems available:

Close-Coupled System

Close-coupled systems connect a storage tank to solar collectors to heat water using renewable energy. Rinnai’s systems use Excelsior solar collectors that leverage European selective surface technology with stainless steel storage tanks with no moving parts. Collectors and tanks cannot be installed separately.

Evacuated Tube System

Offering the most efficient solar option available, Rinnai’s evacuated tube systems consist of a ground-mounted storage tank connected to tubes mounted on the roof of a property. Water is then pumped through the tubes to absorb solar energy and stored in a stainless steel tank. Evacuated tube systems are available in 20, 25, and 30 tube configurations and are frost tolerant to as low as -12°C. Collectors and tanks can be installed separately.

Flat Plate System

Similar to the Evacuated Tube system, the Flat Plate Prestige system has water pass through a slimline collector installed on a roof to heat water using solar energy. Flat plates work best in warmer locations and when roof aesthetics are of concern. Collectors and tanks can be installed separately.

Sunmaster - Solar hot water system

Designed to maximise the sun’s free energy, the Sunmaster solar range of hot water systems can be integrated into any home. Choose from these 3 types of solar hot water units; close-coupled systems, evacuated tube systems, and flat plate systems.

Harnessing the sun’s free energy, the Sunmaster solar hot water system range lowers the carbon footprint of your property, and reduces monthly bills. The Sunmaster range is available in a close-coupled, evacuated tube, and flat plate configurations.

The key features of each are

  • 200 or 330-litre capacity storage available
  • Available with electric boost or continuous flow gas boost
  • Maximum efficiency with Enduro collectors and aluminium fin solar absorbers
  • Thermal Arrestor valve for precise water temperature
  • Sacrificial anode included in the tank for added protection
  • Suitable for high wind areas to classification region D in accordance with AS/NZS1170.2:2011 using additional cyclone frame
  • 5-year warranty on the storage tank
  • 7-year warranty on solar collectors
  • Wide range of storage capacities available from 175 litres to 315 litres
  • Available with electric boost or continuous flow gas boost
  • Low profile, with minimal impact on the roofline
  • No need to reinforce the roof structure
  • Frost tolerant as low as -12°C
  • Solar collectors available in 20, 25 or 30 tube configurations
  • Sacrificial anode included in the tank for added protection
  • 5-year warranty on the storage tank
  • 15-year warranty on solar collectors
  • Wide range of storage capacities available from 175 litres to 315 litres
  • Available with electric boost or continuous flow gas boost
  • Low profile, with minimal impact on the roofline
  • No need to reinforce the roof structure
  • Maximum efficiency with Enduro collectors and aluminium fin solar absorbers
  • Innovative control system using a step-less speed controlled pump
  • Sacrificial anode included in the tank for added protection
  • Suitable for high wind areas to classification region D in accordance with AS/NZS1170.2:2011 using our additional cyclone frame
  • 10-year warranty on the storage tank
  • 7-year warranty on solar collectors
Sunmaster Rinnai - Solar hot water system

Solar Gas Booster

MPJ Plumbing can also install solar gas boosters to ensure your hot water supply is never interrupted. These help maintain a consistent flow of hot water on cloudy, overcast days, and during the winter months. Rinnai’s range of solar gas boosters are designed to integrate seamlessly with its range of solar hot water systems.

Benefits of Solar Gas Boosters

Solar gas boosters provide several key benefits, including:

  • Cost savings: Solar hot water systems harness the sun’s power to produce free energy. Leveraging this energy with a Rinnai solar hot water system can halve monthly energy bills and pay for themselves in as little as six years. Solar gas boosters help increase the efficiency of solar hot water systems and offer similar energy ratings as electric-powered options.
  • Year-round hot water: While the solar collectors in Rinnai’s hot water systems can function in even overcast conditions, solar gas boosters work in conjunction with solar energy to meet demand. In winter months when solar energy is at its lowest, a solar gas booster provides the peace of mind that you will not be without hot water.
  • Environmentally friendly: While a solar gas booster involves the burning of fossil fuel, they enable solar solutions to be utilised in more properties than would be otherwise. This means an overall net reduction in greenhouse gas emissions.
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Other Hot Water System Accessories for Your Continuous Flow Hot Water Systems You Should Consider Purchasing

During the installation of your Rinnai hot water system, MPJ may be required or suggest the installation of some accessories and additional components. These include

  • Flue: A duct or pipe that carries exhaust fumes away from heating units.
  • Pipe Covers: Used to hide pipework and provide a neat and tidy finish to the installation.
  • Recess Box: A space-saving solution that allows a heating unit to be installed inside a wall cavity. This provides a clean, flush finish but does require some structural alteration.
  • Security Bracket: Secures and protects your outdoor Rinnai unit by covering attachments, ensuring the system cannot be stolen or tampered with.
  • Smartstart Water Saver: This small wall-mounted device is designed to reduce water wastage when hot water is not in use and provide faster response times when hot water is needed.

Feel free to speak to MPJ Plumbing’s team of expert plumbers about these or any other Rinnai accessories to maximise your property’s hot water supply.

Why Choose MPJ Plumbing for Your Rinnai Hot Water System Install or Repairs?

MPJ Plumbing is at heart a family business that is now a dedicated collaboration of expert plumbers, serving the people and businesses of Sydney. We have over 25 years of experience solving plumbing problems, unblocking drains, and providing hot water solutions with our team specialising in the installation and repair of Rinnai hot water systems.
  • Fully licenced, qualified plumbing team
  • 24/7 emergency service
  • No obligation, free estimates provided over the phone
  • Quick response and turnaround
  • Lifetime workmanship guarantee
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MPJ Plumbing Can Install or Replace Your Rinnai Hot Water System in Sydney

For families and businesses in and around Sydney, MPJ Plumbing provide Rinnai hot water system installations with our team of experts capable of handling even the most complex jobs. Whether you need an outdoor or indoor installation, storage or continuous flow, gas, electric, or solar-powered, we have the know-how, the tools, and the expertise to get the job done. For those with Rinnai hot water systems already installed, we are also able to provide timely repairs and routine maintenance. With Rinnai systems unique within the market, it’s important to entrust your hot water system to qualified plumbers that understand the technology involved.

Providing Rinnai Hot Water System Repairs in Sydney and the Surrounding Areas, Including:

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Frequently Asked Questions

The main difference between Rinnai’s Prestige and Sunmaster solar hot water system ranges involves the cost of investment, tank quality, and the length of warranties provided. Both ranges harness renewable solar energy to heat hot water with the Prestige line-up considered the more premium product range.
The Energy Star Rating system was devised in 1992 to indicate the energy efficiency of products used for both domestic and commercial purposes. Energy Star Ratings are relative to the product type and are an indication that products meet strict energy efficiency metrics.
Thanks to Rinnai’s use of Enduro collectors, aluminium fin solar absorbers and European selective surface collectors, solar gain can be enjoyed even in Winter. Solar gain will typically provide up to 100% of the energy necessary for your hot water during the summer months, with this number dropping to a minimum of around 25% in winter.