Rheem 400L Twin Element Electric Hot Water System | 3 Hour Free Power Controlled Ready Setup - Water Heater - Electric

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Rheem 400L Twin Element Electric Hot Water System | 3 Hour Free Power Controlled Ready Setup

Get your home ready for smarter hot water with the 4 L 3HR Ready electric hot water system — designed to make better use of the 3 hour free power window with Catch Power integration, dual-circuit control, solar support, remote monitoring and manual bypass included. Built for Australian homes and larger families of up to , this tank is made in and backed by a year factory warranty, with expert installation across Brisbane and the Gold Coast.

Product Details Quick Specs & Benefits

Model Number: 4

Indoor / Outdoor Installation: Indoor and outdoor installation compatible
Element Configuration: Twin Element
Connections: Left and right hand side connections
Available in the Following Power Ratings: 1.8kW, 2.4kW, 3.6kW and 4.8kW
We will adjust the element size on site to suit your existing circuit, so there is nothing extra you need to check before installation.
- 1.8kW: 8 amp minimum, 10 amp recommended
- 2.4kW: 10 amp minimum, 15 amp recommended
- 3.6kW: 15 amp minimum, 20 amp recommended
- 4.8kW: 20 amp minimum, 25 amp recommended

Recommended

Sapphire 3HR Plus

2 of 4

For single-element electric replacements

From ...

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Already Have A Compliant Setup?

The lowest-price 3HR Ready option may suit a qualifying like-for-like replacement where the existing plumbing and electrical setup already meets the required installation scope.

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Choose an exact installation date, or stay flexible and save.

A 3HR Ready hot water setup is designed to help your electric storage hot water system heat during the 3 hour free power window, then store that hot water for use later in the day.

Instead of relying on a basic timer, this system uses Catch Power integration to control and monitor when the hot water system heats. The setup is designed around fast daytime recovery, solar support where suitable, and better visibility over hot water energy use.

How the system heats your hot water

During the free power window, the Catch Power relay allows the hot water system to run during the preferred heating period. On a dual element system, this helps the tank reheat faster within the available 3 hour window, so the stored hot water can be used later for showers, bathrooms, kitchens and laundry.

The tank does not need to heat at the exact time you use the hot water. It stores heated water, which makes electric storage hot water one of the most practical appliances to connect to a free daytime power strategy.

How power is fed into the hot water system

A 3HR Ready installation uses a controlled electrical setup designed to feed power to the hot water system at the right time.

The package includes Catch Power integration, dual-circuit control, manual bypass and a dual inlet isolator as part of the setup. This allows the system to prioritise heating during the 3 hour free power period while still giving the home a backup pathway when additional heating is required.

Where solar is available and suitable, the system can also be set up to support supplementary solar heating outside the free window when demand is high or extra recovery is needed.

What is Catch Power?

Catch Power is the smart control and monitoring part of the setup. It helps manage the hot water load, supports solar integration where suitable, and gives better visibility over how the system is operating.

Catch Power can provide insights into:

Hot water load

Power demand

Energy consumption

When the system is heating

How the system responds to demand

How much the hot water system is using

This gives the customer much better visibility than a basic timer, which simply turns power on and off without showing what the hot water system is actually doing.

Why a standard timer is not the best option

A standard timer may seem like a simple way to run hot water during the free power window, but it can be a costly mistake if it loses time, drifts, is set incorrectly or no longer matches the actual free power period.

If a timer is wrong, the hot water system may start heating outside the free period. The customer may think they are getting free hot water, but the system could be using paid electricity without them knowing.

A basic timer also does not provide proper insight into power consumption, load, demand or system behaviour. It does not give the same remote monitoring or solar integration benefits as a Catch Power controlled setup.

Why Catch Power is the smarter way

Catch Power is a smarter option because it gives control and visibility. It is not just switching the hot water system on and off. It helps monitor the load, manage demand, support solar integration and give the customer better insight into how their hot water system is using power.

For a 3 hour free power setup, that matters. The goal is to heat as much usable hot water as practical during the free window, store it for later, and reduce unnecessary heating outside the preferred period.

Manual bypass and backup control

Everyday hot water use is not always predictable. Some days the household may use more hot water than normal, have guests, run extra laundry or need additional recovery outside the usual heating window.

That is why the setup includes a manual bypass. This gives the home a practical backup option when extra heating is required, so the system is not locked into one rigid schedule.

Solar integration benefits

For homes with solar, the system can be set up to help use more daytime solar energy for hot water. Instead of exporting excess solar for a lower return, the system can help turn available solar power into stored hot water.

This can be especially useful when hot water demand is high or when the tank needs extra recovery outside the 3 hour free power period.

Important note

3 hour free power hot water results depend on your electricity plan, smart meter eligibility, household hot water use, tank size, solar setup, electrical configuration and whether the system needs extra heating outside the free window.

A 3HR Ready setup is designed to help make the most of the opportunity, but final performance depends on the home, usage and power plan.

🏷️ Brand: 4
🔢 Model Number: 4
📦 Volume: L
📏 Width: mm
📐 Height: mm
🌍 Manufactured In:
🛠️ Cylinder / Heat Exchange Material:
🛡️ Cylinder / Heat Exchange Warranty: Years
🔇 Noise Level: dBa
⚖️ Dry Weight: kg
⚡ Energy Source:
📡 WiFi Controller:
⏲️ Built-In Timer:
💡 LED/LCD Status Indicator:
📊 Coefficient of Performance (COP):

RHEEM 3HR READY ELECTRIC HOT WATER INSTALLATION

Rheem 400L Twin Element 3HR Ready Installation Brisbane & Gold Coast

JR Gas & Water supplies and professionally installs the Rheem 400L Twin Element Electric Water Heater as a 3HR Ready hot water package across Brisbane and the Gold Coast, with installation options for suitable large electric replacements, capacity upgrades and new hot water installations.

The Rheem 492400 is the largest residential cylinder in Rheem's 491/492 electric storage range. It combines 400 litres of rated hot water delivery with a large enamel-lined cylinder and a twin-element configuration incorporating a substantial 90 litre boost section.

JR's 3HR Ready package adds Catch Power integration, dual-circuit hot water control, manual bypass functionality, solar integration capability and remote monitoring. Instead of treating the installation as a basic 400L tank swap, JR considers household demand, the electrical infrastructure and when the system should heat.

JR services Greater Brisbane, the Gold Coast, Logan, Ipswich, Redlands, Moreton Bay, Scenic Rim and surrounding eligible South East Queensland areas.

Rheem 400L Twin Element installation at a glance: The Rheem 492400 is an Australian-made, high-capacity twin-element electric storage water heater with 400L hot water delivery and a 90L boost section. Rheem positions the 400L range for larger households, with current guidance extending to around 8–9 people depending on usage assumptions. JR's 3HR Ready package combines the cylinder with Catch Power integration, dual-circuit control, manual bypass, solar integration and remote monitoring, subject to the property's electrical, plumbing and installation conditions.

Rheem 400L Twin Element Supply & Installation at a Glance

Product

400L twin-element electric storage hot water system.

Best Suited To

Larger and higher-use households wanting substantial stored hot water and a large twin-element boost section.

Installation Area

Brisbane, Gold Coast and surrounding eligible South East Queensland service areas.

Installation Type

Large electric replacement, capacity upgrade or new 3HR Ready installation, subject to site, access and electrical assessment.

Who Is the Rheem 400L Twin Element 3HR Ready System Best For?

Larger & Higher-Use Households

The 400L delivery rating provides a substantial stored hot water reserve for larger families, multiple bathrooms, back-to-back showers and homes with consistently high morning or evening demand.

Homes Wanting Strong Boost Recovery

The Rheem 492400 incorporates a 90L boost section, substantially larger than the boost section used in Rheem's 250L and 315L standard twin-element models.

Homes Preparing for 3 Hour Free Power

The large stored-water volume can provide a stronger buffer after the preferred daytime heating period, while JR's control setup manages the twin-element system around suitable electricity periods.

PRODUCT SUITABILITY

Is the Rheem 400L Twin Element 3HR Ready System Right for My Home?

A Good Choice If...

You genuinely need high-capacity electric storage, have strong household hot water demand and want a twin-element system that can be controlled around suitable daytime electricity, solar PV and backup heating requirements.

Consider Another Option If...

Your household does not require 400L-class storage, available installation space is limited or your priority is reducing total electricity consumption. A 250L or 315L electric system or a suitable heat pump may make more sense.

JR Should Check First If...

Access is tight, the existing base is unsuitable for a larger cylinder, the property has only one hot water circuit, the switchboard needs work, the system is being relocated or the property is changing from another hot water technology.

How Many People Does the Rheem 400L Twin Element Suit?

Rheem's current product information lists the 400L electric range for large households, with manufacturer guidance extending to approximately 8–9 people depending on the stated shower, climate and tariff assumptions.

Occupant count should not be used on its own. Long showers, multiple bathrooms, bath use, simultaneous demand, teenagers, guests and unusually heavy evening demand can all increase the amount of stored hot water a home needs.

Capacity becomes particularly important when the aim is to perform most normal heating during a defined daytime period. A 400L system offers a larger stored buffer than the 250L and 315L alternatives, which may reduce the need for additional recovery outside the preferred window in genuinely high-use homes.

How Does the Rheem 400L Twin Element 3HR Ready System Work?

Input: Electricity is supplied to the heating elements inside the enamel-lined electric storage cylinder.

Operation: The elements heat the stored water. The twin-element 492400 incorporates a 90L boost section, while JR's Catch Power and dual-circuit setup manages the preferred heating and additional recovery pathways.

Result: The home stores a large volume of heated water for later showers, bathrooms, kitchens and laundry use.

Because the Rheem 400L remains conventional resistance electric storage, the 3HR Ready advantage comes from combining very large storage capacity, twin-element recovery and smarter control over when the heating electricity is consumed.

Key Features of the Rheem 400L Twin Element

400L Hot Water Delivery

The largest capacity in Rheem's standard 491/492 residential electric storage range, designed for properties with substantial hot water demand.

90L Boost Capacity

The twin-element 492400 incorporates a 90 litre boost section, providing strong additional recovery when household demand exceeds the normal stored supply.

Rheem Ultranamel Cylinder

The steel cylinder uses Rheem Ultranamel protective lining together with a sacrificial anode as part of its corrosion-protection system.

Dual-Handed Connections

Left and right inlet and outlet connection options provide installation flexibility when replacing older large electric storage systems.

Australian Made

Rheem identifies the 492400 electric storage water heater as manufactured in Australia.

12-Year Cylinder Warranty

Rheem currently provides a maximum 12-year cylinder warranty, subject to current manufacturer warranty conditions.

Rheem 400L Twin Element Specifications

Specification	Details
Brand	Rheem
Series	491 / 492 Series Electric
Model	492400
Product Type	Twin-element electric storage water heater
Hot Water Delivery	400L
Twin-Element Boost Capacity	90L
Manufacturer Household Guidance	Approximately 8–9 people depending on stated usage assumptions
Height	1840mm
Body Width	690mm
Maximum Overall Width	Approximately 730mm
Approximate Packaged Weight	120kg
Cylinder Construction	Steel cylinder with Rheem Ultranamel protective lining
Corrosion Protection	Sacrificial anode
Element Configuration	Twin element
Manufacturer Element Ratings	3.6kW or 4.8kW configurations
Water Connections	Rp 3/4
Connection Layout	Dual-handed inlet and outlet fittings
TPR Valve Setting	1000kPa
Expansion Control Valve	850kPa
Maximum Supply Pressure With ECV	680kPa
Maximum Supply Pressure Without ECV	800kPa
Installation	Indoor or outdoor subject to installation requirements
Country of Manufacture	Australia
Maximum Cylinder Warranty	12 years, subject to Rheem warranty conditions

Specifications are based on current Rheem technical information and may change. The exact element and electrical configuration used for the JR 3HR Ready installation must suit the selected package, existing circuits, switchboard and property.

INSTALLATION REQUIREMENTS

What Is Required to Install the Rheem 400L Twin Element 3HR Ready System?

A 400L electric system requires more installation planning than simply checking whether the old pipe connections line up. The cylinder is physically larger and heavier than common 250L and 315L models, and the JR 3HR Ready control arrangement also requires the electrical installation to suit the intended twin-element strategy.

Suitable space for the larger 400L cylinder

Safe installation and replacement access

Stable and compliant support base

Suitable hot and cold water connections

Correct pressure-control valves

Compliant relief drainage

Suitable electrical circuit arrangement

Electrical isolation and circuit protection

Adequate switchboard capacity

Catch Power integration

Dual-circuit hot water control

Manual bypass configuration

A straightforward like-for-like 400L replacement can be considerably simpler than upgrading from a smaller tank, relocating the cylinder or converting a single-circuit installation into the complete controlled twin-element setup. Restricted access is also more important with a 120kg packaged cylinder of this size.

What's Included With Rheem 400L Twin Element 3HR Ready Installation?

3HR Ready Control Setup

JR's current 3HR Ready configuration is designed around Catch Power integration, dual-circuit hot water control, manual bypass functionality, solar integration capability and remote monitoring.

Compliance & Commissioning

The selected installation package can include plumbing and electrical connection, testing, commissioning and relevant compliance work according to the scope purchased through the live product selector.

Possible Additional Work

New electrical circuits, switchboard modifications, difficult access, additional labour for a large cylinder, pipework changes, relocation, drainage work, valve upgrades or base work may increase the scope.

Depending on the package and property, installation may also involve existing-system removal, pipe insulation, drainage improvements, new valves, support-base work and other items required to complete the selected installation safely and compliantly.

Use the live installation package selector above as the final reference for the exact inclusions attached to the package being purchased.

How Much Does Rheem 400L Twin Element 3HR Ready Installation Cost?

Current Rheem 400L supplied-and-installed pricing is shown in the live product package selector above rather than being repeated as a fixed SEO price in this description.

Rheem 400L Twin Element installation cost in Brisbane or the Gold Coast can vary according to the selected package, electrical circuits, switchboard condition, Catch Power requirements, valves, plumbing, access, drainage, relocation and removal of the existing system.

The size and weight of the 400L cylinder can also affect installation scope. A property with clear external access and a suitable existing position can be very different from a replacement involving stairs, restricted side access, relocation or an unsuitable base.

3HR FREE POWER READY

How Does the Rheem 400L Use the 3 Hour Free Power Window?

The core strategy is to heat and store as much of the household's normal hot water requirement as practical during the preferred daytime electricity period, then use that stored hot water later.

The 400L Rheem provides the largest storage platform in the standard Rheem residential electric range, giving high-use homes a substantial reserve after the preferred heating period. Catch Power provides the control layer, while the twin-element and dual-circuit arrangement provides an additional recovery pathway when required.

Where the property has suitable solar PV, the control strategy can also consider useful daytime solar production. Hot water storage can convert available daytime electricity into stored thermal energy for evening, overnight and early-morning household use.

3HR Ready does not guarantee completely free hot water. Results depend on electricity-plan rules, smart-meter eligibility, household demand, solar generation, electrical configuration and whether additional recovery is required outside the preferred period.

Why Does the 400L Size Work Well for High-Demand 3HR Ready Homes?

A limited heating window changes the way storage capacity should be considered. The system needs enough heated water available after that window to support the household through the periods when normal paid electricity may apply.

A 400L cylinder provides a larger buffer than the 250L and 315L alternatives. That can be valuable in homes with several bathrooms, larger families, back-to-back evening showers or unusually high morning demand.

Oversizing still has disadvantages. A 400L system is physically larger, heavier and may cost more to purchase and install. JR should therefore confirm that the household genuinely benefits from the additional capacity rather than choosing the largest available cylinder automatically.

Why Does the 90L Boost Section Matter?

The 400L twin-element model has a significantly larger boost section than the comparable 250L and 315L standard Rheem twin-element cylinders.

That 90L boost capacity gives the installation additional recovery flexibility on days when household hot water demand exceeds the normal planned heating strategy.

JR's dual-circuit approach allows the normal heating and additional recovery pathways to be considered as part of one controlled 3HR Ready setup rather than simply leaving the cylinder on an uncontrolled supply.

Why Is Manual Bypass Included?

Manual bypass provides a practical fallback when actual household demand does not match the planned heating period.

If the property experiences unusually high usage and requires additional recovery outside the preferred window, the bypass provides another level of control rather than leaving the household permanently locked into one operating schedule.

This can be especially useful for larger families, rental properties and homes where guest numbers or hot water use can vary significantly.

Solar Integration and Remote Monitoring

JR's 3HR Ready package is designed to consider solar PV where the property has a suitable system and electrical arrangement. A large electric storage cylinder can provide a useful destination for daytime solar energy by storing that energy as hot water for later use.

Catch Power integration also supports remote monitoring capability, giving better visibility over controlled hot water operation and helping the household understand when the system is heating.

The exact solar and monitoring configuration depends on the electrical equipment installed at the property and the selected JR package.

BRISBANE INSTALLATION

Rheem 400L Twin Element 3HR Ready Installation Brisbane

JR Gas & Water supplies and installs the Rheem 400L Twin Element 3HR Ready system throughout Brisbane for suitable large electric replacements, upgrades and new installations.

For a Rheem 400L Twin Element install in Brisbane, physical access is more important than with smaller cylinders. The unit is approximately 1840mm high, 690mm across the body and around 120kg packaged, so gates, pathways, stairs, existing bases and the final installation area all need to suit the product.

JR also services Logan, Ipswich, Redlands and Moreton Bay. Homes replacing a smaller or single-element system may require both plumbing and electrical changes before the complete 400L twin-element 3HR Ready setup can be installed.

GOLD COAST INSTALLATION

Rheem 400L Twin Element 3HR Ready Installation Gold Coast

JR Gas & Water supplies and installs the Rheem 400L Twin Element 3HR Ready system across the Gold Coast for higher-demand homes wanting large-capacity conventional electric storage with smarter daytime control.

Gold Coast properties with larger solar PV systems can be particularly relevant to the 3HR Ready approach because the substantial storage volume creates a significant daytime electrical load that can be considered alongside both solar generation and an eligible free-power period.

For a Rheem 400L supplied and installed on the Gold Coast, JR checks access, cylinder location, support base, electrical circuits, switchboard, plumbing, water pressure and Catch Power requirements before confirming the installation pathway.

Can the Rheem 400L Twin Element Replace My Existing Hot Water System?

Replacing an Existing 400L Electric System

This is usually the most straightforward pathway where the existing location, access, base, plumbing, drainage and electrical infrastructure remain suitable.

Replacing a Single-Element 400L

The physical replacement may be relatively straightforward, but the complete twin-element 3HR Ready control strategy can require additional electrical work.

Replacing a Different Brand

The Rheem can replace many comparable large electric cylinders, but dimensions, fitting locations, valves and pipework can differ between manufacturers.

Upgrading From 250L or 315L

The larger 400L cylinder needs more physical space and access. The upgrade should be based on genuine household hot water demand rather than simply choosing a larger tank.

Changing From Gas

Gas-to-electric conversion requires a suitable electrical supply and may involve significant plumbing and electrical changes compared with a conventional electric replacement.

Relocating the System

Relocation is possible where suitable, but the size and weight of the 400L cylinder make access, base construction, pipework, drainage and electrical routing particularly important.

Which Rheem 400L Electric Variant Do I Need?

491400 Single Element

The Rheem 491400 uses the same 400L-class platform in a single-element configuration. It may suit conventional replacements where twin-element recovery and the complete 3HR Ready configuration are not required.

492400 Twin Element

This is the model covered on this page. It adds the large 90L boost section and provides the twin-element platform used for JR's controlled 3HR Ready installation.

315L Electric Alternative

A 315L cylinder may make more sense where the household still needs substantial electric storage but does not require the physical size, capacity or installation scope of the 400L model.

How Efficient Is the Rheem 400L Twin Element?

The Rheem 492400 is a conventional electric resistance storage water heater. Its 3HR Ready advantage does not come from changing the heating technology; it comes from combining a very large stored-water volume with better control over when resistance heating occurs.

JR's control strategy is designed to move more suitable heating toward useful daytime electricity, solar PV or an eligible free-power period where the property's electrical configuration allows it.

Homes focused primarily on reducing total electricity consumption should also compare a suitably sized heat pump. Homes wanting quiet operation, very large stored-water capacity and the familiar format of electric storage may prefer the Rheem 400L twin-element approach.

How Does the Rheem 400L Twin Element Compare With Other Hot Water Options?

Option	Main Difference	Capacity	Best Use Case	Important Consideration
Rheem 400L Twin Element 3HR Ready	Maximum-capacity standard Rheem twin-element electric storage with JR smart-control integration	400L hot water delivery / 90L boost	Large, higher-demand households wanting substantial electric storage	Physical access, installation space and electrical setup are critical
Rheem 400L Single Element	Same large-capacity platform without the separate twin-element boost configuration	400L hot water delivery	Conventional high-capacity electric replacement	Less recovery flexibility than the 492400
Rheem 315L Twin Element	Smaller cylinder with lower physical size and a smaller boost section	315L hot water delivery / 50L boost	Larger households that do not genuinely need 400L-class storage	Lower stored-water buffer than the 400L
Heat Pump Hot Water	Uses electricity to transfer ambient heat rather than relying primarily on direct resistance elements	Varies by system	Homes prioritising lower total electricity consumption	Airflow, drainage, location, noise and recovery characteristics differ

COMMON QUESTIONS

Rheem 400L Twin Element 3HR Ready Installation FAQs

How much does Rheem 400L Twin Element 3HR Ready installation cost?

Current supplied-and-installed pricing is shown in the live product package selector above. Final cost depends on the selected installation package, electrical work, access, switchboard requirements, plumbing, valves, drainage, relocation and removal of the existing system.

Can JR Gas & Water install the Rheem 400L in Brisbane?

Yes. JR supplies and installs the Rheem 400L Twin Element across Greater Brisbane and surrounding eligible South East Queensland service areas, subject to site suitability and current installation availability.

Can JR install the Rheem 400L on the Gold Coast?

Yes. JR installs the Rheem 400L Twin Element across eligible Gold Coast service areas for suitable large electric replacements, upgrades and new installations.

What makes the Rheem 400L system 3HR Ready?

JR's package combines the Rheem 492400 twin-element cylinder with Catch Power integration, dual-circuit hot water control, manual bypass, solar integration capability and remote monitoring.

Does this installation include Catch Power?

Catch Power integration forms part of JR's current 3HR Ready control strategy for this product. Use the live package selector above to confirm the exact inclusions attached to the installation package being purchased.

What is the 90L boost capacity?

The Rheem 492400 includes a 90L boost section. This provides substantial additional recovery capability when household hot water demand exceeds the normal stored supply available after the preferred heating period.

How many people does the Rheem 400L suit?

Rheem positions the 400L range for larger households, with current guidance around 8–9 people depending on its stated usage assumptions. Actual suitability depends on shower duration, bathrooms, baths and peak demand.

Is the 400L size good for 3 hour free power?

It can be a strong option for genuinely high-demand homes because the larger cylinder stores more hot water after the daytime heating period. The system should still be sized to the actual household rather than choosing 400L purely for the biggest possible buffer.

Can the Rheem 400L work with solar?

JR's 3HR Ready package is designed to support solar integration where the property's solar PV system and electrical arrangement are suitable.

Does remote monitoring come with the setup?

Catch Power integration supports remote monitoring capability. Exact functionality depends on the installed control configuration and selected package.

Can the Rheem 400L replace my existing electric system?

In many cases, yes. Final suitability depends on access, installation space, base condition, plumbing, water pressure, electrical circuits, switchboard capacity and whether the complete twin-element control setup requires additional work.

Can I upgrade from a 250L or 315L system to the Rheem 400L?

Potentially. The larger 400L cylinder needs more space and access, and the increased capacity should match actual household demand. Plumbing, electrical supply and support-base requirements should be checked first.

Does the Rheem 400L Twin Element need two electrical circuits?

JR's 3HR Ready configuration is designed around dual-circuit control of the twin-element system. The existing electrical installation should be assessed to determine what can be reused and what additional work is needed.

Can the Rheem 400L be installed indoors?

Rheem specifies the 400L 491/492 series for indoor or outdoor installation where the relevant installation requirements are met. Indoor installations need appropriate space, drainage, access and compliance provisions.

Can JR relocate the Rheem 400L?

Yes, where the proposed position is suitable. Because of the cylinder's size and weight, relocation can involve significant additional plumbing, drainage, electrical, base and access work.

What warranty does the Rheem 400L have?

Rheem currently provides a maximum 12-year cylinder warranty, 1 year labour on the cylinder and 1 year parts and labour coverage for the 491/492 electric range, subject to current manufacturer warranty conditions.

How quickly can JR install the Rheem 400L?

Current installation availability is shown through JR's live booking and installation selector above. Timing depends on stock, service area, selected package and whether the property requires additional access, electrical or plumbing assessment.

Rheem 400L Twin Element Warranty and Maintenance

Manufacturer Warranty

Rheem currently lists a maximum 12-year cylinder warranty, 1 year labour on the cylinder and 1 year parts and labour coverage for the 491/492 electric range. Manufacturer conditions apply.

JR Lifetime Warranty Eligibility

Eligible JR installations may qualify for JR's separate Lifetime Warranty pathway where the applicable installation, inspection, servicing and maintenance requirements continue to be met.

Anode & Valve Maintenance

The Ultranamel-lined cylinder uses a sacrificial anode as part of its corrosion protection system. Anode condition, pressure-control valves, relief drainage and electrical controls should be maintained in line with applicable manufacturer and JR requirements.

Why Choose JR Gas & Water for Rheem 400L Twin Element Installation?

10,000+

Hot water installations completed across South East Queensland.

1,000+

Five-star customer reviews supporting JR's local service record.

2023–2025

ProductReview recognition across three consecutive years.

SEQ

Brisbane, Gold Coast and surrounding South East Queensland installation service.

A 400L 3HR Ready installation depends on more than the cylinder. JR considers household demand, physical access, support base, plumbing, electrical supply, control arrangement, solar suitability and backup strategy so the completed system works as one installation.

COMPARE YOUR OPTIONS

Compare Electric & 3HR Free Power Hot Water Options

Compare the Rheem 400L Twin Element with JR's current main-menu hot water categories before choosing your installation package.

All Hot Water Systems → 3 Hour Free Power Systems → Electric Hot Water Systems → Rheem Hot Water Systems → Request a Quote →

READY TO INSTALL

Install the Rheem 400L Twin Element 3HR Ready System With JR Gas & Water

The Rheem 492400 is a high-capacity Australian-made electric storage system for larger homes wanting 400L hot water delivery, a substantial 90L twin-element boost section and the familiar simplicity of conventional electric storage. JR's 3HR Ready package adds the control infrastructure required to make the system more flexible for daytime electricity, solar PV and eligible free-power periods.

Because the 400L cylinder is physically larger and heavier than common 250L and 315L models, confirm access, installation space, household demand and electrical requirements before proceeding. Choose the installation package and preferred date using the live options above, or use JR's quote pathway where the property requires additional assessment.

Request an Onsite or Written Quote

Use collapsible tabs for more detailed information that will help customers make a purchasing decision.

Ex: Shipping and return policies, size guides, and other common questions.

Electric Hot Water System Package Selection Guide

(Please rotate mobile device to landscape for easy viewing)

Choosing the right electric hot water system package depends on your installation needs, household size, and whether additional electrical work is required. Use this guide to compare package levels and find the best fit for your home.

Selecting the right package helps streamline installation, but we understand that needs may change, and that the purchaser isn’t a plumber. We’re flexible and can make adjustments, such as upgrading to the next package as needed.

💡 Which Package is Right for You?

IMPORTANT - All online packages are for EXTERNAL installations only, for internal installations please complete our quote request form.

✅ Base – For compliant replacements of Existing Identical Compliant EXTERNAL installations
Ideal for identical exact swaps of the same electrical hot water system where the existing system meets legal compliance requirements. (example below) No extra plumbing, valves, pipework, support base, electrical work or disposal required or included.

(EXAMPLE - A Rheem 250L 491250 replacing complaint Rheem 250L 491250 not a Rheem 250L 101250)

✅ Silver – For minor upgrades to an existing electric hot water system under 10 years old.
Includes minor pipework alterations and a valve kit but does not include electrical modifications, support base or system disposal. Designed for those swapping a similar electric system and working to a tight budget.

(EXAMPLE - Swapping an 8year old Rheem 160L with a new Rinnai 315L where the existing installation is compliant but requires pipework alterations to adapt the new unit and new valve set for warranty)

🏆 Gold (Best Seller) – For standard electric replacement installations
Covers a new valve set, old system removal, expansion drain lines, support base and plumbing modifications, making it the most common choice for standard installations.

(EXAMPLE - Swapping a 20year old Dux 125L with a new Vulcan 315L, Strip all down and redo the valves, pipework, drain lines, support base and dispose of the old unit)

💰 Sapphire (Best Value) – For installations requiring minor electrical work
Adds electrical safety features like an isolator, safety switch, and cable extensions to our gold package to ensure a compliant and safe electrical connection.

(EXAMPLE - Swapping an old heat pump/split solar system with a new Everhot 400L that requires a hardwired electrical connection, then strip all down and redo the valves, pipework, drain lines, support base and dispose of the old unit)

✅ Diamond – For homes needing extensive electrical work
Provides extra plumbing and electrical modifications, including a new electrical circuit on top of our gold package making it ideal for homes without existing wiring for an electric system.

(EXAMPLE - Swapping an old Gas System with a new Rheem 315L that needs its own dedicated electrical circuit, type then strip all down and redo the valves, pipework, drain lines, support base and dispose of the old unit)

✅ Platinum – The ultimate package
Includes everything – system relocation, extensive plumbing, valve set, support base, drain lines, disposal, electrical upgrades, and a new electrical circuit for complete installation flexibility.

(EXAMPLE - Replacing any existing system of any type then relocating it to a new position on the house that requires the electrical/plumbing to be installed or relocated to the new installation position)

🏆 Package Comparison Guide

Feature	Base	Silver	Gold 🏆 Best Seller	Sapphire 💰 Best Value	Diamond	Platinum
Existing Unit Must be Identical Make/Model/Series as Purchase	✅	❌	❌	❌	❌	❌
Existing System Removal & Form 4 (Compliance Certification)	✅	✅	✅	✅	✅	✅
Pipework Alterations	❌	✅	✅	✅	✅	✅
Valve Kit (Required for System Operation)	❌	✅	✅	✅	✅	✅
Included Altered Pipework (m)	❌	2m	8m	8m	8m	20m
🏆 Package Comparison Guide	Base	Silver	Gold 🏆 Best Seller	Sapphire 💰 Best Value	Diamond	Platinum
Support Base (For Uneven or Soft Ground)	❌	❌	✅	✅	✅	✅
FREE Waste & System Disposal (EXCLUDES ANY AND ALL ROOF MOUNTED COMPONENTS)	❌	❌	✅	✅	✅	✅
System Drainlines (Prevents Flooding & Improves Longevity)	❌	❌	✅	✅	✅	✅
Electrical Isolator (Ensures Safe Operation & Maintenance Access)	❌	❌	❌	✅	✅	✅
Electrical Extension (Required for Distance to Power Source)	❌	❌	❌	✅	✅	✅
🏆 Package Comparison Guide	Base	Silver	Gold 🏆 Best Seller	Sapphire 💰 Best Value	Diamond	Platinum
New Electrical Circuit (For Homes Without Existing Power Supply)	❌	❌	❌	❌	✅	✅
Safety Switch (Protects Your Home from Electrical Faults)	❌	❌	❌	✅	✅	✅
Included Altered Cabling (m)	❌	❌	❌	2m	10m	10m
System Relocation (Move System to New Position)	❌	❌	❌	❌	❌	✅
Requires Existing Installation to be Compliant	✅	✅	❌	❌	❌	❌

Whenever a product is required, we only source from trusted, warranty‑backed manufacturers:

Valves – AVG, RMC, Rye Metal (and subsidiaries)
Copper – Type B Kembla or Crane
PEX Systems - Ezipex
Insulation – eFlex or K‑Flex
Electrical switches & timers – Hager
Conduit – Medium Duty PVC Vinidex or GTS
Brassware – Brasshards
Hydraulic crimp fittings – EziPress, Viega, Kembla
Sealants – Loxeal

Feel free to let us know if you have any other preferred brands!

IMPORTANT - All online packages are for external installations only, for internal installations please complete our quote request form.

IMPORTANT - Solar panel and roof-mounted tank removal is not included in any package and is available as an optional extra at additional cost.

🛠 Need Help Choosing?

Not sure which package is right for you? Contact JR Gas & Water, and we’ll help you select the best solution for your home!

ZipPay – 6-Month Interest-Free on All Products

ZipPay allows you to buy now and pay later, offering flexible, interest-free payments for up to 6 months on all JR products. It’s easy to set up, and you can customize your repayment schedule to suit your budget. Payments can be made weekly, fortnightly, or monthly, with a $6 fee if the balance isn’t paid off by the due date.

Humm – Up to 12 Months Interest-Free

Humm provides interest-free payment plans on purchases up to $30,000, perfect for both small and large buys. For items over $2,000, you can spread payments over 12 months. Humm also offers flexibility in scheduling payments based on when you get paid

Afterpay – 8 Weeks, No Interest

With Afterpay, spread the cost of purchases across four equal installments, due every two weeks, over an 8-week period. There’s no interest, and as long as payments are made on time, there are no fees. Perfect for purchases between $100 and $1,500

Plenti Finance – For Reclaim Systems Only

Plenti Finance is available exclusively for Reclaim Energy systems. This option offers tailored repayment terms with competitive interest rates, helping make eco-friendly choices more affordable. For more detailed information on Plenti’s terms and eligibility for Reclaim systems, visit the Reclaim Energy finance page

If you're in Queensland and considering a new electric hot water system, JR Gas & Water is the company to choose. Here's why:

Experience and Expertise: JR Gas & Water has over 10 years of experience in the gas and plumbing industry. Their team of licensed and insured professionals is highly skilled and knowledgeable about all aspects of electric hot water system installation, maintenance, and repair. They can provide expert advice on the best system for your needs and ensure a smooth installation process.

Quality Products: JR Gas & Water uses only high-quality products from trusted brands to ensure your electric hot water system is reliable and efficient. They also offer a range of options to suit different budgets and requirements.

Competitive Pricing: JR Gas & Water offers competitive pricing for their electric hot water systems, ensuring that you get a great value for your investment. They also provide a detailed quote upfront, so there are no surprises or hidden costs.

Customer Service: JR Gas & Water is committed to providing excellent customer service. They are always available to answer any questions or concerns you may have and are committed to ensuring your satisfaction.

Local Business: JR Gas & Water is a locally owned and operated business in Queensland. By choosing them for your electric hot water installation, you are supporting a local business and contributing to the local economy.

Warranty and Guarantee: JR Gas & Water provides a warranty and guarantee on all their products and services, giving you peace of mind knowing that your system is covered in case of any issues.

Energy Efficiency: Electric hot water systems can be energy efficient, and JR Gas & Water can help you choose the right system for your needs. They can provide advice on energy-saving features and options, such as timers and thermostats, to help you save on your energy bills.

Safety: JR Gas & Water is committed to safety and ensuring that all installations are done to the highest safety standards. They are also familiar with local safety regulations and requirements, ensuring that your electric hot water system is installed safely and in compliance with all relevant codes.

JR Gas & Water is a reliable and experienced choice for your electric hot water system installation in Queensland. With a commitment to quality products, competitive pricing, excellent customer service, and safety, they can help you make the switch to a more efficient and cost-effective solution for your hot water needs. Contact them today to learn more about their services and how they can help you.