Rinnai Hot Water Systems: Infinity Gas, Electric & Heat Pump
Rinnai is one of Australia's best-known hot water brands and is
particularly recognised for Infinity continuous-flow gas hot water. The
current JR Gas & Water range also includes electric storage and Rinnai
Enviroflo heat pumps, giving homeowners several different replacement and
upgrade pathways within the one brand.
JR's current Rinnai range spans compact electric tanks through to large
400L storage systems, multiple Infinity and Infinity B continuous-flow gas
models, and high-efficiency Enviroflo heat pump systems for customers
wanting to reduce electricity used for water heating.
Choosing the best Rinnai therefore starts with the hot water technology:
electric storage for straightforward replacement, Infinity gas for
compact on-demand hot water, or Enviroflo heat pump for a more
efficiency-focused upgrade.
Infinity Gas
Continuous-flow gas hot water from compact to larger-family capacities.
Electric Storage
125L through to large 400L-class household storage options.
Enviroflo Heat Pump
High-efficiency upgrade pathway for electric hot water households.
Current JR Pricing
Available Rinnai systems currently start from
.
How Much Does a Rinnai Hot Water System Cost?
Rinnai hot water prices vary substantially between electric storage,
continuous-flow gas and heat pump systems. The pricing below is pulled
directly from JR Gas & Water's live Rinnai collection so the figures change
automatically when applicable product or variant pricing changes.
Current Rinnai Hot Water Prices
–
This is the current advertised starting-price range across available
Rinnai hot water systems at JR Gas & Water.
The lowest-priced currently available Rinnai system is the
from
.
Sold-out products and unavailable variants are excluded. Final installed
price depends on the selected system and site-specific installation
requirements.
Compare the same technology.
A Rinnai 125L electric tank, Infinity B26 and Enviroflo heat pump are
completely different systems. Purchase price, installation requirements,
household demand and expected running cost should be compared together.
Rinnai Infinity Instant Gas Hot Water Systems
Rinnai Infinity is one of the best-known continuous-flow gas hot water
ranges in Australia. Unlike a storage system, Infinity heats water as it is
required, allowing the unit itself to remain compact and wall mounted.
Current Rinnai Infinity systems cover several nominal flow rates so the
system can be matched more closely to the number of bathrooms and hot water
fixtures likely to operate at the same time.
Rinnai Infinity B16
A compact continuous-flow system suited to lighter household demand and
commonly compared for one-bathroom homes.
From
Rinnai Infinity B20
A useful step up in flow capacity for households wanting more hot water
delivery than the smaller B16 class.
From
Rinnai Infinity B26
A popular family-size continuous-flow model providing higher nominal
flow for homes with greater simultaneous hot water demand.
From
Rinnai Infinity 26
The Infinity 26 provides 26L-class continuous-flow performance and is
commonly considered for moderate to higher household demand.
From
What Size Rinnai Infinity Do I Need?
Continuous-flow hot water is sized by flow rate rather than storage
capacity. A 16L, 20L or 26L-class Rinnai describes the nominal volume of hot
water the unit can supply under its specified test conditions.
The practical requirement depends on how many showers, taps and appliances
may use hot water at the same time, together with the incoming water
temperature and desired outlet temperature.
Do not automatically choose the biggest Infinity.
Correct gas sizing and household demand matter. A larger continuous-flow
unit also needs a gas supply capable of supporting its maximum input.
Rinnai Electric Hot Water Systems
Rinnai electric storage provides a straightforward hot water replacement
pathway for homes already using an electric tank. JR's current range spans
compact and family-sized capacities, including 125L, 160L, 250L, 315L and
400L systems.
Rinnai 125L
Compact electric storage for smaller households and lower hot water
demand.
From
Rinnai 250L
A common family-size electric storage option balancing capacity and
physical footprint.
From
Rinnai 315L
Larger electric storage for households with greater daily or peak hot
water demand.
From
Rinnai 400L
High-capacity storage for larger households and homes with substantial
hot water use.
From
Rinnai Enviroflo Heat Pump Hot Water
Rinnai Enviroflo heat pumps provide an efficiency-focused alternative to
conventional electric storage. Rather than generating all water-heating
energy through an electric resistance element, the heat pump transfers heat
from the surrounding air into the stored water.
JR's current Rinnai range includes the Enviroflo GR 300L, while older
Enviroflo capacities may remain visible as sold-out or discontinued
products.
Rinnai Enviroflo GR 300L
A larger family-size heat pump for households wanting to reduce hot
water electricity consumption while retaining substantial stored
capacity.
From
Why Change from Electric to Enviroflo?
The main reason is energy efficiency. A heat pump uses electricity to
move ambient heat into the water rather than relying only on direct
resistance heating, which can substantially reduce purchased
electricity used for hot water.
Rinnai Solar Hot Water Systems
Rinnai also manufactures solar hot water systems, including roof-mounted
close-coupled systems and split solar systems where the storage tank remains
at ground level.
Current Rinnai solar families include Sunmaster and Prestige configurations,
with electric or gas boosting available depending on the exact system.
Solar suitability depends on roof space, orientation, shading, structural
conditions and household demand.
What Is Rinnai Best Known For?
Rinnai is particularly well known for continuous-flow gas hot water. The
Infinity range has been a major part of the Australian market for decades
and remains one of the brand's most recognisable hot water products.
The broader Rinnai range now extends well beyond gas. Australian customers
can also compare electric storage, heat pump and solar systems under the
same brand.
That breadth makes Rinnai useful for both straightforward replacements and
technology changes, particularly where a homeowner wants to remain with a
familiar brand while moving from gas to electric or from electric storage
to heat pump hot water.
What Size Rinnai Hot Water System Do I Need?
Rinnai sizing depends heavily on the technology selected. Electric and heat
pump systems use stored-water capacity, while Infinity continuous-flow gas
systems are primarily selected by required litres per minute.
For electric storage and heat pumps, JR's sizing approach estimates around
40 litres per person per day for light usage, 50 litres for average usage
and 65 litres for higher usage before matching the demand to a practical
system size.
For Rinnai Infinity, simultaneous fixture use matters much more. A home
running one shower at a time has a very different flow requirement from a
property where two showers and a kitchen tap may operate together.
Which Rinnai Hot Water System Should I Choose?
Choose Rinnai Electric If…
You want a straightforward storage replacement, already have suitable
electrical infrastructure and want to keep the system simple.
Choose Rinnai Infinity If…
The property has suitable gas and you want compact continuous-flow hot
water without a large storage cylinder.
Choose Rinnai Enviroflo If…
You want to reduce electricity use compared with conventional electric
storage while retaining a substantial stored hot water capacity.
Choose Rinnai Solar If…
The property has suitable roof conditions and you want solar energy to
contribute directly to household water heating.
Replacing an Existing Rinnai Hot Water System
Rinnai provides strong like-for-like replacement options because the brand
covers several major hot water technologies. An older Infinity can often be
replaced with another continuous-flow unit, while an ageing electric tank
can be replaced with another Rinnai electric system or upgraded to
Enviroflo heat pump hot water.
The replacement does not need to match the old model exactly. Household
demand, current energy source, installation requirements and expected
running costs should be reconsidered before selecting the new system.
Rinnai Heat Pump & Solar Rebates
Eligible Rinnai heat pump and solar hot water systems can qualify for
Small-scale Technology Certificates where the exact product and installation
meet the applicable federal scheme requirements.
Eligibility and certificate values depend on the exact system,
installation, location and rules applying at the time, so rebate value
should be confirmed against the selected product.
Rinnai Hot Water Installation Brisbane & Gold Coast
JR Gas & Water supplies and installs eligible Rinnai hot water systems
throughout Brisbane, the Gold Coast and eligible South East Queensland
service areas.
Installation requirements differ significantly between Rinnai technologies.
Electric storage requires suitable plumbing and electrical supply, Infinity
gas needs adequate gas capacity and pipe sizing, and Enviroflo heat pumps
require appropriate airflow, drainage, electrical supply and clearance.
Where the correct Rinnai model or installation pathway cannot be confidently
determined online, JR can provide an onsite or written quote before the
replacement is selected.
Rinnai Hot Water System FAQs
How much does a Rinnai hot water system cost?
Current available Rinnai hot water systems at JR Gas & Water range
from
to
based on the advertised starting prices of currently available
systems.
The lowest-priced currently available Rinnai system is the
from
.
How much does a Rinnai electric hot water system cost?
Current available Rinnai electric storage systems at JR Gas & Water
range from
to
.
How much does a Rinnai Infinity hot water system cost?
Current available Rinnai Infinity and Infinity B continuous-flow
systems at JR Gas & Water range from
to
.
How much does a Rinnai heat pump cost?
Current available Rinnai heat pump systems at JR Gas & Water range
from
to
.
How much does a Rinnai Infinity B16 cost?
The current available Rinnai Infinity B16 at JR Gas & Water starts
from
.
How much does a Rinnai Infinity B20 cost?
The current available Rinnai Infinity B20 at JR Gas & Water starts
from
.
How much does a Rinnai Infinity B26 cost?
The current available Rinnai Infinity B26 at JR Gas & Water starts
from
.
How much does a Rinnai 250L electric hot water system cost?
Current available Rinnai 250L electric hot water systems at JR Gas &
Water start from
.
How much does a Rinnai 315L electric hot water system cost?
Current available Rinnai 315L electric systems at JR Gas & Water start
from
.
How much does a Rinnai Enviroflo heat pump cost?
Current available Rinnai Enviroflo heat pumps at JR Gas & Water start
from
.
What is the difference between Rinnai Infinity B and Infinity?
Both are Rinnai continuous-flow gas hot water families. Infinity B is
positioned as a practical residential continuous-flow range, while
other Infinity models can offer different controls, specifications,
finishes or higher-tier features depending on the exact product.
What size Rinnai Infinity do I need for two bathrooms?
A higher-flow Rinnai such as a 26L-class system is commonly considered
for homes with two bathrooms, but the correct model depends on whether
both showers are expected to operate together, incoming water
temperature and the capacity of the gas supply.
Is Rinnai Infinity endless hot water?
A correctly installed Rinnai Infinity heats water continuously while a
hot tap is operating rather than relying on a finite storage tank. It
can therefore continue supplying hot water while gas, water and system
operating conditions remain available.
Is a Rinnai 250L or 315L electric system better?
Neither is automatically better. The 250L can suit moderate family
demand, while the 315L provides greater stored capacity for larger
households or heavier hot water usage.
Can I replace electric hot water with a Rinnai Enviroflo heat pump?
Yes, where the property and installation conditions are suitable.
Moving from electric resistance storage to a Rinnai heat pump can
reduce electricity used for water heating, but airflow, drainage,
electrical supply and system location need to be checked.
Does Rinnai make solar hot water?
Yes. Rinnai's Australian solar range includes close-coupled and split
solar hot water systems, including Sunmaster and Prestige product
families.
Are Rinnai heat pumps and solar systems eligible for rebates?
Eligible Rinnai heat pump and solar systems can qualify for
Small-scale Technology Certificates where the exact model and
installation meet the applicable scheme requirements.
JR's
Hot Water Rebates Queensland
page explains the broader current incentive pathways.
Can I replace another brand with Rinnai?
Yes. The replacement system does not normally need to be the same
brand as the old unit. The selected Rinnai instead needs to suit the
home's energy source, hot water demand, available space and
installation requirements.
Can JR install Rinnai hot water systems in Brisbane?
Yes. JR Gas & Water supplies and installs eligible Rinnai electric,
continuous-flow gas and heat pump hot water systems throughout its
Brisbane service area.
Can JR install Rinnai hot water systems on the Gold Coast?
Yes. Eligible Rinnai systems can be supplied and installed throughout
JR Gas & Water's Gold Coast service area, subject to the selected
model and installation requirements.
Should I repair or replace my Rinnai hot water system?
That depends on system age, fault, warranty status and repair cost. A
minor component issue is different from an ageing storage cylinder,
major gas-appliance fault or heat-pump failure.
JR's
Hot Water Repairs & Servicing
section provides the available repair pathways.
Can I get a quote before choosing a Rinnai system?
Yes. If you are unsure whether electric storage, Rinnai Infinity or
Enviroflo heat pump is the right option, you can
request an onsite or written quote
before selecting the system.
Choose Your Rinnai Hot Water System
Compare the current Rinnai systems and live JR pricing above, then choose
between electric storage, Infinity continuous-flow gas and Enviroflo heat
pump based on your household demand and property setup. If you are unsure
which technology is right, compare JR's complete hot water range before
making the final selection.
