Rinnai Hot water System Supplied and Installed by Installed Today Rinnai Hot water System Supplied and Installed by Installed Today
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Rinnai Hot Water Systems

Shop reliable Rinnai hot water systems for homes, units and rental properties. Choose supply only if you already have an installer arranged, or select a supplied and installed option where available.
 

Choose How You Want to Order

Not every hot water job is the same. Choose supply only if you already have an installer arranged, or select a supplied and installed option where available.

Supply Only

Best if you already have a licensed plumber, gas fitter or electrician arranged.

Your product price is for the hot water system only. Installation, valves, old unit removal, disposal, electrical work, pipework changes and compliance upgrades are not included unless selected separately.

Not Sure What You Need?

Hot water systems vary by size, energy source, household demand and installation setup.

Compare the options below or get help choosing the right system before you order.

25 products
Sale
Rinnai 250L Electric Hot Water System - Installed Today
Rinnai 250L Electric Hot Water System - Installed Today
Rinnai 250L Electric Hot Water System
from $939.00 Regular price $1,149.00 Save $210
Sale
Rinnai 125L Electric Hot Water System - Installed Today
Rinnai 125L Electric Hot Water System - Installed Today
Rinnai 125L Electric Hot Water System
from $719.00 Regular price $899.00 Save $180
Sale
Rinnai 315L Electric Hot Water System - Installed Today
Rinnai 315L Electric Hot Water System - Installed Today
Rinnai 315L Electric Hot Water System
from $1,099.00 Regular price $1,349.00 Save $250
Sale
Rinnai 160L Electric Hot Water System - Installed Today
Rinnai 160L Electric Hot Water System - Installed Today
Rinnai 160L Electric Hot Water System
from $859.00 Regular price $1,049.00 Save $190
Sale
Rinnai Infinity B16 LPG Gas Hot Water System - Installed Today
Rinnai B16 LPG Gas Hot Water System - Installed Today
Rinnai Infinity B16 LPG Gas Hot Water System
from $909.00 Regular price $1,149.00 Save $240
Sale
Rinnai Infinity B26 LPG Gas Hot Water System - Installed Today
Rinnai B26 Natural Gas Hot Water System - Installed Today
Rinnai Infinity B26 Natural Gas Hot Water System
from $1,059.00 Regular price $1,299.00 Save $240
Sale
Rinnai Infinity B26 LPG Gas Hot Water System - Installed Today
Rinnai B26 LPG Gas Hot Water System - Installed Today
Rinnai Infinity B26 LPG Gas Hot Water System
from $1,059.00 Regular price $1,299.00 Save $240
Sale
Rinnai 50L Electric Hot Water System - Installed Today
Rinnai 50L Electric Hot Water System - Installed Today
Rinnai 50L Electric Hot Water System
from $489.00 Regular price $599.00 Save $110
Sale
Rinnai Infinity B16 LPG Gas Hot Water System - Installed Today
Rinnai B16 Natural Gas Hot Water System - Installed Today
Rinnai Infinity B16 Natural Gas Hot Water System
from $909.00 Regular price $1,149.00 Save $240
Sale
Rinnai 400L Electric Hot Water System - Installed Today
Rinnai 400L Electric Hot Water System - Installed Today
Rinnai 400L Electric Hot Water System
from $1,429.00 Regular price $1,799.00 Save $370
Sale
Rinnai Infinity B20 LPG Gas Hot Water System - Installed Today
Rinnai B16 LPG Gas Hot Water System - Installed Today
Rinnai Infinity B20 LPG Gas Hot Water System
from $1,049.00 Regular price $1,299.00 Save $250

Rinnai Hot Water Systems

Shop Rinnai hot water systems online with Installed Today for instant gas continuous flow, electric storage, gas storage and heat pump hot water options. Rinnai is one of Australia’s most recognised hot water brands, commonly compared by customers replacing an existing gas unit, upgrading from an older electric tank, choosing a heat pump, or selecting a practical hot water system for homes, townhouses, rentals and renovations.

Rinnai hot water systems are often chosen for everyday residential replacement jobs where the customer wants a trusted brand, strong product range and practical options across gas, electric and heat pump systems. Whether you need a compact instant gas system, a family-sized continuous flow unit, an electric storage replacement or a Rinnai Enviroflo heat pump, Installed Today makes it easier to compare Rinnai options online before ordering.

Choose supply only if you already have your own licensed installer arranged, or select supplied and installed options where available in eligible Brisbane and Gold Coast service areas.

Supply Only Rinnai Hot Water Systems Across Australian Metro Areas

Supply-only Rinnai hot water systems are ideal if you already have your own licensed plumber, electrician or gas fitter arranged. This option suits homeowners, builders, renovators, property managers, landlords and trade customers who need the product supplied without installation included.

The product price is for the Rinnai hot water system only. Installation, valves, old unit removal, disposal, electrical work, gas work, pipework changes, drainage work, tempering valves, access upgrades and compliance upgrades are not included unless selected separately or shown as part of the chosen option.

Before ordering supply only, check that the selected Rinnai system suits your property, household demand, gas type if applicable, existing setup, installation location, access, connection positions and installation requirements.

Supplied and Installed Rinnai Hot Water Systems in Brisbane and Gold Coast

Supplied and installed options may be available on selected Rinnai hot water systems in eligible Brisbane and Gold Coast service areas. This option is useful when you want the Rinnai system and installation arranged together instead of buying the unit separately.

Installation availability depends on the selected Rinnai product, property location, existing system, access, plumbing setup, gas type, electrical requirements, drainage, valve condition and any additional work required.

Some replacements may need additional valves, disposal, gas pipework changes, electrical work, pipework alterations, drainage changes, wall mounting changes, base work or compliance upgrades. These are not included unless selected separately or shown as part of the chosen option.

Rinnai Instant Gas Continuous Flow Hot Water

Rinnai instant gas hot water systems, also known as Rinnai continuous flow hot water systems, heat water as it passes through the unit instead of storing hot water in a tank.

These systems are commonly compared by customers replacing an existing Rinnai Infinity, Rinnai B Series or other continuous flow gas unit. They can suit homes already set up for natural gas or LPG, especially where a compact external wall-mounted hot water system is preferred.

Instant gas systems are compared by flow rate rather than tank size. The right Rinnai model depends on the number of bathrooms, number of people, gas supply, water pressure, installation location and how many hot water outlets may be used at the same time.

Rinnai Infinity Hot Water Systems

Rinnai Infinity hot water systems are commonly compared by customers wanting a continuous flow gas hot water option from a well-known brand. These systems are often selected for homes where natural gas or LPG is available and the household wants hot water heated on demand.

Rinnai Infinity systems may suit customers replacing an older continuous flow unit, upgrading flow rate, changing from gas storage to instant gas where suitable, or choosing a compact external system for a renovation.

Before ordering a Rinnai Infinity system, check the gas type, flow rate, installation location, water pressure, gas supply, connection positions, clearances, electrical requirements and whether the selected model suits the household’s daily hot water use.

Rinnai B Series Gas Hot Water Systems

Rinnai B Series continuous flow systems are commonly chosen for practical residential gas hot water replacement. They may suit customers wanting a straightforward instant gas option in natural gas or LPG, depending on the selected model.

Rinnai B Series systems are often compared by litre-per-minute flow rate. Smaller models may suit compact homes or lower-demand applications, while larger models may suit family homes where the gas supply, water pressure and installation conditions are suitable.

If replacing an existing Rinnai B Series unit, check the current model, gas type, flow rate and installation location before choosing a replacement.

Natural Gas and LPG Rinnai Systems

Many Rinnai gas hot water systems are available in natural gas and LPG versions depending on the model range and stock availability. The correct gas type must be selected before ordering.

Natural gas Rinnai systems are designed for properties connected to a natural gas supply. LPG Rinnai systems are designed for properties using bottled LPG.

Natural gas and LPG hot water systems are not interchangeable. Ordering the wrong gas type can delay installation and may require product exchange or additional work. If you are unsure, check the label on the existing hot water system or confirm the gas type with your licensed gas fitter before ordering.

Rinnai Electric Hot Water Systems

Rinnai electric storage hot water systems are commonly used for straightforward replacement jobs where the home already has an electric storage tank. These systems heat and store water inside a tank, giving the home a ready supply of hot water for showers, taps, kitchens and laundries.

Rinnai electric systems may suit homes, townhouses, apartments, rental properties, granny flats and renovations where electric storage hot water is already installed.

The right electric storage size depends on household demand, number of people, number of bathrooms, bath use, laundry use, shower habits and whether the old system has been keeping up.

Rinnai Heat Pump Hot Water Systems

Rinnai heat pump hot water systems, including Rinnai Enviroflo options, are commonly compared by customers wanting a more efficient electric hot water upgrade. A heat pump uses heat from the surrounding air to help heat stored water, making it different from a standard electric storage tank.

A Rinnai heat pump may suit customers replacing an old electric hot water system, upgrading during a renovation, choosing a more efficient electric storage-style option, or selecting a system for a home where outdoor space, airflow and drainage are suitable.

Heat pumps need more site planning than standard electric tanks. Before ordering, check the tank size, airflow clearances, drainage, outdoor location, noise position, electrical requirements, access path and whether the system suits the household’s daily hot water demand.

Rinnai Enviroflo Heat Pump Systems

Rinnai Enviroflo heat pump systems are commonly compared by customers wanting a recognised-brand heat pump option for electric hot water replacement. They may suit homes already using electric storage hot water where the customer wants to compare heat pump performance, tank size and installation requirements.

Enviroflo systems can suit different household sizes depending on the selected model. Smaller options may suit lower-use homes, while larger options may suit family households where the tank capacity and recovery suit daily demand.

Before choosing a Rinnai Enviroflo system, check outdoor installation conditions, available space, airflow, drainage, electrical setup, access, noise location and whether the selected capacity suits the home.

Rinnai Gas Storage Hot Water Systems

Rinnai gas storage hot water systems may suit customers replacing an existing natural gas or LPG storage-style unit. Gas storage systems heat and store water in a tank, giving the household a ready supply of hot water for everyday use.

Gas storage can be a practical option where the home already uses gas storage hot water and the existing system type has worked well. It may suit family homes, rental properties and customers who prefer a familiar tank-style gas hot water system rather than changing to continuous flow.

Before ordering a Rinnai gas storage system, check the gas type, tank size, installation location, access, connection positions, ventilation and whether the selected system is a practical replacement for the current unit.

Choosing the Right Rinnai Hot Water System Size

Choosing the right Rinnai system depends on system type and household demand.

For electric and gas storage systems, tank size matters. A smaller tank may suit compact homes, units, granny flats or low-use households. A larger tank may suit family homes, multiple bathrooms, bath use and heavier daily hot water demand.

For Rinnai heat pumps, tank size, recovery, outdoor location and airflow all matter. The system needs to suit the household’s peak hot water use and the installation site.

For Rinnai instant gas systems, flow rate matters. A smaller continuous flow unit may suit lower-demand homes, while a larger model may be needed for family homes, multiple bathrooms or higher peak-time use.

If the existing system has always supplied enough hot water, a similar capacity or flow rate may be a good starting point. If the home regularly runs out of hot water or pressure drops during use, the replacement should be selected based on actual demand and site suitability.

Replacing an Existing Rinnai Hot Water System

Replacing an existing Rinnai hot water system can often be simpler than changing to a different system type, especially if the current unit has performed well and the home’s hot water needs have not changed.

Before choosing a replacement, check the old Rinnai model, system type, tank size or flow rate, gas type if applicable, installation location, connection positions, electrical supply, valve condition, wall mounting or base condition and access.

If the current Rinnai system is instant gas, compare gas type and flow rate first. If the current system is electric storage, compare electric storage and heat pump options. If the current system is gas storage, compare gas storage and continuous flow options based on the site.

A replacement is also a good time to check whether household demand has changed. More occupants, extra bathrooms, renovations, tenants or heavier water use may mean the old system size is no longer the best fit.

Rinnai for Rental Properties

Rinnai hot water systems are commonly compared for rental properties because landlords and property managers often want practical, recognisable and serviceable replacement options.

For rentals, the best Rinnai system is usually one that suits the expected number of occupants, existing energy source, installation location and daily hot water demand.

Electric storage may suit many standard rental properties where the home is already set up for electric hot water. Instant gas may suit homes already using continuous flow gas. Heat pumps may suit rentals where the owner wants a more efficient electric option and the site is suitable.

When choosing a Rinnai system for a rental, avoid undersizing. A system that is too small can create tenant complaints and may not suit the expected daily demand of the property.

Rinnai for Family Homes

Family homes often need more careful hot water selection because demand can be concentrated during morning and evening routines. Multiple showers, bath use, laundry loads and kitchen use can quickly test an undersized system.

Rinnai instant gas, electric storage, gas storage and heat pump systems can all suit family homes depending on the property setup.

For instant gas, compare flow rate, gas supply and how many outlets may run at the same time. For storage systems, compare tank size and recovery. For heat pumps, compare tank size, airflow, drainage, recovery and installation location.

The right Rinnai system depends on the home, not just the number of people. Bathroom count, shower habits, bath use, energy source, water pressure and installation location all matter.

Rinnai for Renovations and Upgrades

Renovations are a good time to review whether the existing hot water system still suits the home. Adding bathrooms, upgrading showers, adding a bath, changing laundry use or increasing household occupancy can all affect hot water demand.

A renovation may also create an opportunity to upgrade from electric storage to heat pump, change from gas storage to instant gas, relocate the system, or select a larger system that better suits the new layout.

Before ordering a Rinnai system for a renovation, check the final fixture count, expected hot water use, energy source, gas supply if applicable, outdoor location, roof or wall access, drainage, pipework route, electrical supply and whether relocation or additional works may be required.

Rinnai Instant Gas Compared With Gas Storage

Rinnai instant gas systems heat water as it passes through the unit. They are usually wall-mounted externally and selected by flow rate.

Rinnai gas storage systems heat and store water in a tank. They may suit customers who want a familiar like-for-like replacement where gas storage is already installed.

Instant gas may be better where the customer wants a compact external system and the property has suitable gas supply, water pressure and installation conditions. Gas storage may be better where the existing storage system has worked well and the customer wants a tank-style replacement.

Changing from gas storage to instant gas may require gas pipework changes, wall mounting, plumbing changes, electrical work, drainage changes, valve upgrades and compliance work. These extras are not included unless selected separately or shown as part of the chosen option.

Rinnai Electric Storage Compared With Heat Pump

A Rinnai electric storage system is usually the simpler replacement where the home already has a standard electric hot water tank and the customer wants a familiar storage-style option.

A Rinnai heat pump may be worth comparing where the customer wants a more efficient electric hot water system and the installation location suits heat pump operation.

The trade-off is that heat pumps need more site planning than standard electric tanks. They need airflow, drainage, outdoor space and consideration of operating noise. They may cost more upfront but can be a strong option where efficiency is a priority.

The right choice depends on budget, available space, electrical setup, household demand and whether the customer wants the simplest replacement or a more efficient upgrade.

Outdoor Installation for Rinnai Gas Systems

Most standard residential Rinnai external gas hot water systems are outdoor units unless the product is specifically designed and approved for internal or flued installation.

Do not assume an external gas hot water unit can be installed indoors. Indoor gas installations require the correct appliance type, flueing, ventilation and compliance setup.

Before ordering, check the installation location, wall mounting surface, clearances, gas connection, water connections, drainage, electrical requirements, access for servicing and whether the unit is suitable for the intended location.

Rinnai Heat Pump Placement and Airflow

Rinnai heat pump hot water systems need suitable outdoor installation conditions. Airflow is important because the system draws heat from the surrounding air to help heat the stored water.

A heat pump should not be installed in a tight, enclosed or poorly ventilated space unless the product requirements specifically allow it. Poor airflow can affect performance, efficiency and noise.

Before ordering, check the outdoor location, airflow clearances, drainage, base condition, access path, electrical supply, pipework, valve condition, noise position and service access.

Gas Supply and Electrical Checks for Rinnai Systems

Rinnai gas systems need the correct gas type and suitable gas supply. Continuous flow gas systems can require adequate gas flow, especially larger models.

Rinnai electric and heat pump systems need suitable electrical conditions. Even if replacing an existing electric storage system, the new product may have different electrical or circuit requirements.

Before ordering, check:

Existing system type

Gas type if applicable

Gas pipe sizing where relevant

Electrical supply

Circuit requirements

Water pressure

Pipework position

Drainage

Valve condition

Access for delivery

Service clearance

Whether extra work may be required

Gas work, electrical work, plumbing changes, valves, disposal and compliance upgrades are not included unless selected separately or shown as part of the chosen option.

Rinnai Supply Only or Installed Options

Supply only is best when you already have your own licensed installer arranged and only need the Rinnai hot water system supplied.

Supplied and installed options may suit customers who want the product and installation arranged together where the selected Rinnai product and location are eligible.

For supply-only orders, your own installer should confirm the system is suitable before installation. For supplied and installed options, final suitability can depend on product availability, address, access, current system, valves, disposal, gas, electrical, pipework, drainage and compliance requirements.

Choosing the Right Rinnai System Online

Choosing the right Rinnai hot water system online is easier when you start with the current system.

If you have instant gas, compare Rinnai continuous flow systems by gas type, flow rate and installation location.

If you have electric storage, compare Rinnai electric storage and Rinnai heat pump options.

If you have gas storage, compare Rinnai gas storage or instant gas options based on the site.

If the home is being renovated or household demand has changed, compare the replacement based on future use rather than only the old unit.

The best Rinnai system is the one that suits the property, energy source, household demand, installation location and budget.

Why Buy Rinnai Hot Water Systems from Installed Today?

Installed Today makes it easier to compare Rinnai hot water systems online across instant gas, electric storage, gas storage and heat pump hot water options.

You can compare Rinnai products by system type, flow rate, tank size, gas type, household suitability, installation requirements and ordering pathway, then choose supply only or supplied and installed options where available.

Whether you need a Rinnai Infinity gas hot water system, a Rinnai B Series continuous flow unit, a Rinnai electric storage replacement, a Rinnai Enviroflo heat pump, a natural gas model, an LPG model, or a supply-only Rinnai product for your own installer, Installed Today helps you choose a practical Rinnai hot water system for your home, rental or renovation.

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Rinnai Hot Water System FAQs

Common questions about choosing, ordering and installing Rinnai heat pump, electric, natural gas and LPG hot water systems.

What are Rinnai hot water systems best suited for?

Rinnai hot water systems are best suited to homes wanting a trusted brand with options across heat pump, electric storage and instant gas hot water. The right Rinnai system depends on your household size, energy source, hot water demand, installation location and existing setup.

Which Rinnai hot water system should I choose?

Choose a Rinnai heat pump if you want improved energy efficiency, a Rinnai electric storage system if you want a straightforward electric replacement, or a Rinnai Infinity continuous flow gas system if you want instant gas hot water in either natural gas or LPG.

What is the Rinnai Enviroflo GR 300L heat pump best suited for?

The Rinnai Enviroflo GR 300L heat pump is best suited to family homes wanting an energy-efficient stored hot water system with strong everyday capacity. It can be a good option for households replacing an older electric storage system and wanting lower energy use.

What is the Rinnai 250L electric hot water system best suited for?

The Rinnai 250L electric hot water system is best suited to family homes wanting simple, reliable electric storage hot water. It can suit households needing stored hot water for showers, kitchens and laundries where an electric replacement is preferred.

What is the Rinnai Infinity B26 natural gas system best suited for?

The Rinnai Infinity B26 natural gas system is best suited to homes connected to mains gas that need strong continuous flow hot water. It can suit family homes and higher-demand households, depending on shower flow rate, water pressure, climate, gas supply and usage habits.

What is the difference between Rinnai natural gas and LPG models?

Rinnai natural gas models are for homes connected to mains gas, while Rinnai LPG models are for homes using bottled gas. The correct gas type must be selected before ordering because natural gas and LPG units are not interchangeable without the correct manufacturer-approved setup.

Can I replace my old hot water system with a Rinnai?

In many cases, a Rinnai hot water system can replace an older electric, heat pump or gas hot water system. The new unit still needs to suit the existing location, plumbing connections, energy source, electrical or gas requirements, drainage, clearances and current compliance requirements.

Can I buy a Rinnai hot water system supply only?

Yes. Choose supply only if you already have a licensed plumber, gas fitter, electrician or suitable installer arranged. Supply-only pricing is for the Rinnai hot water system only and does not include installation, valves, old unit removal, disposal, electrical work, gas work, pipework changes or compliance upgrades unless selected separately.

Can I order a Rinnai hot water system supplied and installed?

Yes. Supplied and installed options are available for selected Rinnai hot water systems in eligible Brisbane and Gold Coast service areas. Availability depends on your location, access, product type, existing setup, electrical or gas requirements and site conditions.

Are Rinnai gas hot water systems installed indoors?

Standard external Rinnai gas hot water systems are designed for outdoor installation. Do not assume a gas unit can be installed internally unless it is a manufacturer-approved internal or flued model and the installation meets all required ventilation, flueing and compliance requirements.

Do Rinnai heat pumps need clearance or ventilation?

Yes. Rinnai heat pump systems use surrounding air to help heat the water, so clearance and ventilation are important. The unit must be installed in a suitable position that meets the manufacturer’s airflow, drainage and service access requirements.

Is a Rinnai Infinity system the same as gas storage?

No. A Rinnai Infinity system is an instant gas continuous flow unit that heats water as it passes through the system. Gas storage hot water systems heat and store water inside a tank. The right option depends on household demand, gas supply, space and installation setup.

Does installation include electrical work?

Electrical work is not automatically included unless shown in the selected installation option or chosen as an add-on. Some Rinnai electric, heat pump or continuous flow replacements may require electrical checks, circuit changes, isolators, timers, power points or other upgrades by a licensed electrician.

Does installation include gas work?

Gas work is not automatically included unless shown in the selected installation option or chosen as an add-on. Some Rinnai gas replacements may require gas compliance checks, regulator work, pipework changes, isolation valves, gas sizing upgrades or other work by a licensed gas fitter.

Does installation include old system removal and disposal?

Old system removal and disposal are not automatically included unless shown in the selected installation option or chosen as an add-on. Access, location, tank size, stairs, mounting, pipework and site conditions can affect what is required.

Do you install Rinnai hot water systems in Brisbane and the Gold Coast?

Supplied and installed options are available for selected Rinnai hot water systems in eligible Brisbane and Gold Coast service areas. Availability depends on the selected Rinnai product, your address, access, existing system and installation requirements.