Rheem 315L Twin Element Electric Hot Water System | Supply+Install | LIFETIME WARRANTY - Water Heater - Electric
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Rheem 315L Twin Element Electric Hot Water System | Supply+Install | LIFETIME WARRANTY

Enjoy reliable, affordable hot water every day with the Rheem 315L electric hot water system — built for Australian homes and larger families of up to 7. Featuring a durable Steel Enamel tank, 12 year factory warranty, and expert installation across Brisbane and the Gold Coast, this system delivers performance you can count on. Made in Australia and backed by award-winning service.
Quick Specs & Benefits View product specifications and installation details
  • Volume: 315L
  • Recommended Household Size: 7 people +
    • 50L: 1 person full time tariff
    • 80L: 1 person full time tariff, 1 person off peak
    • 125L: 2 people full time, 2 people off peak
    • 160L: 3 people full time, 2 people off peak
    • 250L: 5 people full time, 4 people off peak, 6 people dual element
    • 315L: 6 people full time, 5 people off peak, 7 people dual element
    • 400L: 8 people full time, 7 people off peak, 9 people dual element
  • Model Number: 492315
  • Width: 640 mm
  • Height: 1640 mm
  • Minimum Room Needed for Internal Installations: 790 W x 740 D x 1740 H mm
  • 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
  • Internal Cylinder Material: Steel Enamel
  • Maximum Cylinder Warranty: 12 Years +
    • Cylinder: 12 years
    • Thermostat: 12 months
    • Element: 12 months
    • Valve Set: 24 months
    • Parts and Labour: 1 year on all
  • Made In: Australia
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🏷️ Brand: Rheem
🔢 Model Number: 492315
📦 Volume: 315L
📏 Width: 640 mm
📐 Height: 1640 mm
🌍 Manufactured In: Australia
🛠️ Cylinder / Heat Exchange Material: Steel Enamel
🛡️ Cylinder / Heat Exchange Warranty: 12 Years
🔇 Noise Level: dBa
⚖️ Dry Weight: kg
⚡ Energy Source:
📡 WiFi Controller: No
⏲️ Built-In Timer: No
💡 LED/LCD Status Indicator: No
📊 Coefficient of Performance (COP):

RHEEM ELECTRIC STORAGE SUPPLY & INSTALLATION

Rheem 315L Twin Element Electric Water Heater Installation Brisbane & Gold Coast

JR Gas & Water supplies and professionally installs the Rheem 315L Twin Element Electric Water Heater across Brisbane, the Gold Coast and surrounding South East Queensland service areas.

The current twin-element model is the Rheem 492315, a large mains-pressure electric storage water heater designed and manufactured in Australia for homes requiring substantial stored hot-water capacity and additional boost recovery.

Rheem rates the model at 315 litres of hot-water delivery with approximately 50 litres of upper-element boost capacity. Current manufacturer specifications list 3.6kW and 4.8kW twin-element versions.

Its conventional cylindrical footprint, dual-handed plumbing connections and familiar electric-storage design also make it a practical replacement option for many existing large electric water heaters.

Rheem 315L Twin Element quick answer: the 492315 is a large electric storage water heater with 315L rated hot-water delivery and a 50L upper boost zone. Rheem currently specifies 3.6kW or 4.8kW twin-element versions, dual-handed water connections, Ultranamel® cylinder protection and a sacrificial anode. It can suit larger households where stored capacity, electricity tariff and recovery performance justify a 315L system.

Rheem 315L Twin Element at a Glance

Hot-Water Delivery

315 L

Rheem's published hot-water delivery for model 492315.

Boost Capacity

50 L

Upper-zone capacity available for twin-element boost recovery.

Element Ratings

3.6 / 4.8

Kilowatt element ratings currently specified by Rheem for the 492315.

Model

492315

Rheem's current 315L twin-element 491/492 Series model.

Who Is the Rheem 315L Twin Element Best For?

Larger Households

A 315L storage system can suit households with substantial shower, bath, kitchen and laundry hot-water demand.

Higher Peak Demand

The upper element provides additional boost recovery when the household draws heavily from the stored hot water and the electrical arrangement supports that operation.

Large Electric Replacements

Rheem designs the 491/492 Series around familiar footprints and fitting positions that can make suitable electric-storage replacements more straightforward.

PRODUCT SUITABILITY

Is the Rheem 315L Twin Element Right for My Home?

A Good Choice If...

You have substantial daily hot-water demand, enough installation space and an electrical and tariff arrangement suitable for a large twin-element storage system.

Consider Another System If...

Your hot-water demand is much lower, you need more stored capacity than 315L can provide, or your priority is changing to heat-pump, solar or another hot-water technology.

JR Should Check First If...

The existing electrical arrangement is uncertain, the tank is indoors, access is difficult, you are changing system type or the existing valves, drainage, pipework and support base need upgrading.

Rheem 315L Size & Capacity

Rheem's current installation documentation lists the 315L 491/492 Series at approximately 1640mm high with a 640mm cylinder diameter.

The maximum overall fitting envelope is approximately 680mm, and the cartoned weight is approximately 97kg.

Once filled, the supporting surface also carries the substantial weight of the stored water, so the installation position needs to be suitable for a large mains-pressure storage system.

Height

1640 mm

Cylinder Diameter

640 mm

Maximum Envelope

680 mm

Cartoned Weight

97 kg

How Does the Rheem 315L Twin Element Work?

Cold water enters the cylinder: mains water fills the pressurised storage vessel through the lower cold-water connection.

Electric elements heat the water: electrical resistance elements convert electricity directly into heat within the cylinder.

Hot water remains stored: the insulated tank keeps heated water ready for household demand.

Hot water leaves from the upper section: as stored hot water is drawn, replacement cold water enters the cylinder.

Twin-element recovery: the upper heating element can reheat approximately 50L in the upper portion of the tank, giving suitable households additional boost recovery.

What Does Twin Element Mean?

The Rheem 492315 contains two electric heating elements rather than a single heating element.

Rheem's current installation instructions describe a typical twin-element arrangement with off-peak power supplied to the lower heating unit and continuous power supplied to the upper heating unit.

This allows the main stored volume to be heated during a suitable controlled tariff period while the upper element provides additional recovery when needed.

Twin element does not mean both elements simply operate together all the time. The current Rheem wiring arrangement is non-simultaneous, and actual operation depends on the thermostats, wiring, metering and electricity tariff at the property.

Key Rheem 315L Features

Rheem Ultranamel®

Rheem uses its enamel coating to protect the internal steel cylinder.

Sacrificial Anode

A sacrificial anode provides additional corrosion protection for the enamel-lined steel cylinder.

50L Boost Capacity

The twin-element 315L model provides approximately 50 litres of upper-zone boost capacity.

Dual-Handed Connections

Left and right water connections provide additional flexibility during suitable replacement installations.

Lower-Cost Tariff Compatible

Rheem identifies the system as suitable for connection to appropriate lower-cost electricity tariffs.

Australian Made

Rheem identifies the current 315L electric storage model as designed and manufactured in Australia.

Rheem 492315 Specifications

Specification Rheem 315L Twin Element
Brand Rheem
Model 492315
Product Type Electric storage hot-water system
Element Configuration Twin element, non-simultaneous operation
Hot-Water Delivery 315L
Boost Capacity Approximately 50L
Current Twin-Element Ratings 3.6kW or 4.8kW
Electrical Supply 220–240V AC, 50Hz
Cylinder Construction Steel cylinder with Rheem Ultranamel® protective coating
Corrosion Protection Sacrificial anode
Water Connections Rp 3/4" / approximately 20mm
Connection Layout Dual handed
Overall Height Approximately 1640mm
Cylinder Diameter Approximately 640mm
Maximum Fitting Envelope Approximately 680mm
Hot-Water Outlet Height Approximately 1317mm
Cold-Water Inlet Heights Approximately 113mm and 103mm depending on connection side
PTR Valve Height Approximately 1228mm
Approximate Cartoned Weight 97kg
PTR Relief Valve Pressure 1000kPa
Expansion Control Valve Setting 850kPa
Maximum Supply Pressure With ECV 680kPa
Maximum Supply Pressure Without ECV 800kPa
Thermostat Bottom thermostat adjustable 60–70°C; upper thermostat fixed at 60°C
Installation Capability Indoor or outdoor where current Rheem requirements are met
Manufacture Australia
Cylinder Warranty 12 years for eligible domestic installations, subject to current Rheem terms
Labour on Cylinder 1 year, subject to current Rheem warranty terms
Parts & Labour 1 year, subject to current Rheem warranty terms

Current Rheem manufacturer data for model 492315 specifies 3.6kW and 4.8kW twin-element versions. The exact supplied appliance rating plate and current Rheem installation instructions remain the final technical reference.

INSTALLATION REQUIREMENTS

What Is Required to Install a Rheem 315L Twin Element?

Suitable level and structurally sound installation position
Enough access to move the 315L cylinder into position
Suitable hot and cold water pipework
Correct inlet pressure-control arrangement
Correct PTR valve installation
Expansion-control valve where required
Suitable relief-valve drain lines
Electrical circuit suitable for the installed element rating
Correct twin-element control and tariff arrangement
Appropriate electrical and water isolation
Adequate service access around the cylinder
Commissioning after plumbing and electrical connection

Water Pressure & Valve Requirements

The Rheem 315L is a mains-pressure storage water heater and relies on correctly selected valves to protect the cylinder and control incoming pressure.

Rheem specifies a 1000kPa temperature and pressure relief valve setting and an 850kPa expansion-control valve setting for the 315L model.

Maximum water-supply pressure is listed at 680kPa with an expansion-control valve and 800kPa without one.

Existing valves should therefore be assessed during replacement rather than automatically retained simply because they were connected to the previous cylinder.

PTR & Expansion Drain Lines

The pressure and temperature relief valve is an essential safety component and requires an appropriate discharge drain.

Where an expansion-control valve is fitted, its discharge also needs a suitable drainage pathway.

Some relief-valve discharge during normal heating can occur as stored water expands, so the drain line must remain open and terminate in an appropriate location.

Existing drain lines should be checked for condition, fall, sizing and termination while the previous water heater is being removed.

Electrical Requirements

The Rheem 492315 is a hard-wired twin-element electric storage water heater.

Rheem currently specifies direct connection to a 220–240V AC 50Hz mains supply and lists 3.6kW or 4.8kW element ratings for the twin-element model.

The electrical circuit, cable size, protective devices, isolation and tariff arrangement therefore need to suit the exact appliance being installed.

Rheem's current instructions describe the lower heating unit as typically supplied by off-peak electricity and the upper heating unit by continuous supply. Existing arrangements should be checked rather than assumed.

Indoor vs Outdoor Installation

Rheem specifies the 315L 491/492 Series as suitable for appropriate indoor or outdoor installation.

JR's current standard online electric-storage packages are structured for external installations.

Internal installations require additional assessment because access, drainage, safe-tray requirements, available clearances and the consequences of a future leak can materially change the installation scope.

Internal installations require the appropriate additional assessment and scope. Use JR's live selector and current internal-installation requirements when the cylinder is located inside the building.

JR Rheem 315L Twin Element Installation Packages

JR's current live product page uses six electric-storage installation pathways so the selected package can reflect the condition of the existing plumbing, valves, drainage, electrical supply and installation position.

Base — Exact Compliant Replacement

For an identical make, model or series replacement in an existing compliant external installation where no additional plumbing, valve, base, electrical or relocation work is required.

Silver — Minor Upgrade

Includes minor pipework alterations and a valve kit for a similar existing electric-storage replacement without broader electrical modifications, support-base work or disposal scope.

Gold — Standard Replacement

JR's standard replacement pathway includes a new valve set, old-system removal, expansion drain lines, support base and plumbing modifications within current package allowances.

Sapphire — Minor Electrical Work

Adds electrical safety and connection work such as suitable isolation, safety-switch work and cable extensions to the broader Gold replacement scope.

Diamond — New Electrical Circuit

Designed for properties requiring broader plumbing and electrical modification, including a new dedicated circuit within current package conditions.

Platinum — Relocation & Major Upgrade

JR's broadest current pathway includes system relocation, extensive plumbing, valves, support base, drain lines, disposal and substantial electrical work.

Use JR's live selector above as the final reference for current package inclusions, allowances, installation timing and pricing.

What Can a Rheem 315L Installation Include?

Rheem 492315 according to selected package
Licensed plumbing work
Electrical work according to selected package
Existing-system removal where included
Positioning of the replacement cylinder
Hot and cold water connections
Valve replacement where included
Pressure-control arrangement where required
Drain-line work according to selected package
Support base where included
Commissioning and operational testing
Basic customer handover

Final inclusions depend on the live package selected and actual conditions found at the property.

What May Require Additional Work?

Electrical work beyond selected package allowances
Switchboard upgrades outside selected package scope
Major hot or cold water rerouting
Major drainage alterations
Structural or difficult-access work
Internal-installation work beyond selected scope
Relocation beyond selected package allowances
Roof-mounted solar-equipment removal
Rectification of unrelated plumbing defects
Rectification of unrelated electrical defects

How Much Does Rheem 315L Twin Element Installation Cost?

Current supplied-and-installed pricing is shown through JR's live product and package selector above rather than being hardcoded into this description.

An exact compliant 492315 replacement can have a very different installation scope from a job requiring new valves, drain lines, support-base work, electrical alterations, a new circuit or relocation.

Use the live selector above as the current reference for package pricing, availability and installation inclusions.

BRISBANE INSTALLATION

Rheem 315L Twin Element Installation Brisbane

JR Gas & Water installs suitable Rheem 315L twin-element electric storage systems throughout Greater Brisbane for larger households needing substantial stored-hot-water capacity.

Brisbane installations can range from straightforward replacement of an existing compatible electric cylinder through to jobs requiring new valves, drainage, support-base work or electrical upgrades.

JR considers household demand, electricity tariff, element configuration, physical access, available installation space, water pressure and existing electrical services before confirming the installation pathway.

JR also services Logan, Ipswich, Redlands and Moreton Bay, subject to current service-area and installation availability.

GOLD COAST INSTALLATION

Rheem 315L Twin Element Installation Gold Coast

JR Gas & Water provides suitable Rheem 315L electric storage replacement and installation across eligible Gold Coast service areas.

The 315L twin-element model can suit larger households wanting a substantial stored reserve together with additional upper-element recovery.

Actual suitability still depends on shower flow, bath use, household routines, electricity tariff and available recovery time rather than tank capacity alone.

Can the Rheem 315L Twin Element Replace My Existing System?

Replacing Another 492315

Usually the simplest pathway where the existing installation remains compliant and the plumbing, valves, electrical arrangement, drainage and support base are suitable.

Replacing Another Large Electric Tank

Often possible, but overall dimensions, connection locations, element rating, electrical arrangement, valves and drainage should be checked before treating the job as like-for-like.

Changing From Another System Type

Conversion from gas, solar or heat-pump hot water can require additional plumbing, electrical and removal work and should be assessed as a system conversion.

Rheem 315L Twin vs Single Element

492315 Twin Element

Includes an upper heating element and approximately 50L of boost capacity for additional recovery flexibility during periods of higher hot-water demand.

It can be a better fit where the household values daytime upper-zone recovery and the electrical tariff is configured appropriately.

491315 Single Element

Uses the same 315L hot-water delivery class with a simpler single-element heating arrangement.

It can suit homes where the stored volume and available heating period comfortably meet demand without the added upper-element boost arrangement.

Rheem 250L vs 315L vs 400L Twin Element

Feature 250L Twin 315L Twin 400L Twin
Model 492250 492315 492400
Hot-Water Delivery 250L 315L 400L
Boost Capacity 50L 50L 90L
Overall Height 1396mm 1640mm 1840mm
Cylinder Diameter 640mm 640mm 690mm
Cartoned Weight 82kg 97kg 120kg
General Difference Lower stored demand Higher family demand Highest stored demand in the range

The right tank is not automatically the largest tank. Stored capacity should match actual household use, available recovery time and the property's electricity arrangement.

Household Sizing — Rheem vs JR Guidance

Rheem's current consumer product page displays the 315L model for up to nine people under specific assumptions: seven-minute showers, 42°C mixed-water temperature, a moderate climate and a time-of-use tariff.

JR's current live electric sizing guidance is more conservative and lists the 315L twin-element configuration around seven people.

These figures use different sizing assumptions, so household headcount should not be treated as an absolute capacity guarantee.

Size the system around hot-water use, not just occupant count. Long showers, large baths, high-flow fittings, consecutive morning use and the available reheating window can all materially change the required cylinder size.

Electricity Tariffs & Running-Cost Considerations

Rheem identifies the 315L system as suitable for connection to appropriate lower-cost electricity tariffs.

With a typical twin-element arrangement, the lower element can use an overnight controlled supply while the upper element has continuous supply available for boost recovery.

Actual running cost depends on electricity rates, tariff availability, thermostat settings, household usage, heat loss and how frequently the boost element is required.

A larger tank can provide useful stored capacity but also keeps a greater volume of water hot, so correct sizing remains important.

Rheem Electric Storage vs Rheem Stellar Stainless Steel

Rheem 492315 Enamel-Lined Steel

Uses a conventional steel cylinder protected internally by Rheem Ultranamel® together with sacrificial-anode corrosion protection.

It provides a familiar large electric-storage format and avoids the stainless-steel water-chemistry suitability considerations that apply to Rheem Stellar models.

Rheem Stellar Stainless Steel

Uses a stainless-steel cylinder and water fittings and does not require a sacrificial anode.

It is significantly lighter, but Rheem advises that stainless-steel water heaters are not suitable for every water supply.

Electric Storage vs Heat Pump Hot Water

Rheem Electric Storage

Uses electric resistance elements to heat stored water and can provide a relatively straightforward replacement pathway where conventional electric storage is already installed.

Heat Pump Hot Water

Uses refrigeration-cycle technology to transfer heat from surrounding air into stored water and can use substantially less electricity to provide the same amount of heat under suitable operating conditions.

The better fit depends on installation budget, electricity tariff, available space, household demand, noise considerations and longer-term energy priorities.

COMMON QUESTIONS

Rheem 315L Twin Element Installation FAQs

What is the Rheem 492315?

It is Rheem's current 315L-delivery twin-element electric storage water heater in the 491/492 Series.

How much hot water does the Rheem 315L provide?

Rheem publishes 315L of hot-water delivery for model 492315.

What is the twin-element boost capacity?

Rheem currently lists approximately 50L of upper-zone boost capacity.

What element ratings does Rheem specify?

Current Rheem technical information specifies 3.6kW and 4.8kW versions for the 492315 twin-element model.

Do both elements run at the same time?

No under Rheem's current standard twin-element wiring arrangement. The manufacturer describes non-simultaneous operation with separate lower and upper element control.

Can the Rheem 315L use off-peak electricity?

Yes. Rheem describes the lower element as typically connected to off-peak overnight supply, with continuous supply to the upper boost element where the property's electrical arrangement supports this.

How many people can the Rheem 315L suit?

Rheem displays up to nine people under specific moderate-climate, seven-minute-shower and time-of-use assumptions. JR's current sizing guide uses a more conservative seven-person figure for the 315L twin-element configuration. Actual hot-water demand should determine final sizing.

What are the Rheem 315L dimensions?

Rheem's current installation guide lists approximately 1640mm overall height, 640mm cylinder diameter and a maximum fitting envelope of approximately 680mm.

How heavy is the Rheem 315L?

Rheem lists approximately 97kg cartoned weight. The supporting surface must also carry the additional weight of the stored water once installed.

What is Rheem Ultranamel®?

It is Rheem's protective enamel coating used on the internal steel cylinder as part of its corrosion-protection system.

Does the Rheem 315L use a sacrificial anode?

Yes. Rheem specifies a sacrificial anode to provide additional protection for the enamel-lined steel cylinder.

Does it have connections on both sides?

Yes. Rheem describes the 250L to 400L 491/492 Series as dual handed, with left and right water connections.

What size are the plumbing connections?

Rheem lists Rp 3/4-inch water connections, approximately 20mm nominal size.

What is the PTR valve setting?

The current Rheem specification lists a 1000kPa pressure and temperature relief setting.

What is the expansion-control valve setting?

Rheem currently lists an 850kPa expansion-control valve setting.

What is the maximum incoming water pressure?

Rheem lists 680kPa maximum supply pressure with an ECV and 800kPa without an ECV, subject to the complete installation arrangement.

What temperature does the Rheem 315L store water at?

Rheem's current installation instructions state that the lower thermostat on the 48 and 49 Series is adjustable from 60°C to 70°C, while the upper thermostat on twin-element models is fixed at 60°C.

Can it be installed outside?

Yes. Rheem identifies the 250L to 400L 491/492 Series as suitable for appropriate indoor or outdoor installation.

Can JR install it indoors?

The Rheem product can suit an appropriate indoor installation, but JR's standard online electric-storage packages are structured around external installations and internal jobs require the appropriate additional scope.

Can it replace my current 315L electric water heater?

Often, yes. Overall dimensions, connection positions, electrical setup, valves, drainage and support still need to be checked before treating the job as an exact replacement.

Can it replace a 250L electric system?

Potentially. The taller 315L cylinder provides greater hot-water delivery, but the household demand, available space and electrical arrangement need to justify the change.

Can it replace a gas, solar or heat-pump system?

It can on suitable properties, but conversion from another hot-water technology may require new electrical work, plumbing alterations and removal or modification of the previous equipment.

What warranty does the Rheem 315L have?

Rheem currently lists a 12-year cylinder warranty for eligible domestic applications, with one year labour on the cylinder and one year parts and labour, subject to current warranty terms.

What is JR's Base installation package?

Base is intended for an identical compliant external replacement where no additional pipework, valves, support-base, electrical or relocation work is required.

Which JR package covers a normal older-system replacement?

JR currently identifies Gold as its standard electric-storage replacement pathway, with broader valve, removal, drainage, support-base and plumbing scope within current package allowances.

What if electrical work is required?

Sapphire adds minor electrical work, while Diamond and Platinum provide broader electrical scope including a new circuit where applicable.

Can JR install the Rheem 315L in Brisbane?

Yes. JR installs suitable electric storage systems throughout Greater Brisbane and surrounding eligible South East Queensland service areas.

Can JR install the Rheem 315L on the Gold Coast?

Yes. JR provides suitable electric hot-water replacement and installation across eligible Gold Coast service areas.

How much does Rheem 315L Twin Element installation cost?

Current supplied-and-installed pricing is shown through JR's live package selector above. Final scope depends on the existing system, plumbing, valves, drainage, electrical arrangement, installation position and whether relocation is required.

Rheem 315L Warranty & Maintenance

12-Year Cylinder Warranty

Rheem currently lists a 12-year cylinder warranty for eligible domestic installations, subject to current manufacturer warranty conditions.

Maintain the Sacrificial Anode

The anode forms part of the enamel-lined cylinder's corrosion-protection system and should be maintained in accordance with Rheem's current service guidance.

Maintain Safety Valves

Rheem instructs that the easing levers on the PTR and expansion-control valves where fitted should be operated periodically in accordance with its current maintenance instructions.

Rheem's manufacturer warranty is separate from JR's installation workmanship and support terms. Refer to the current JR installation package terms for the workmanship coverage applying to the selected job.

Why Choose JR Gas & Water for Rheem 315L Installation?

LICENSED

Plumbing and electrical work completed through appropriately licensed tradespeople.

SYSTEM PLANNING

Household demand, tank size, electricity tariff and recovery requirements considered together.

CLEAR SCOPE

Plumbing, valves, drainage, support base and electrical requirements matched to the selected installation pathway.

SEQ

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

A 315L twin-element cylinder needs to suit both household hot-water demand and the electrical system controlling its recovery. JR considers physical access, tariff, element configuration, plumbing, pressure control, drainage and future service access before finalising the installation.

COMPARE YOUR OPTIONS

Compare Electric & Rheem Hot Water Systems

Compare the Rheem 315L Twin Element with JR's wider live electric and Rheem ranges if your property needs a different tank size, cylinder construction, element arrangement or hot-water technology.

Electric Hot Water Systems → Rheem Hot Water Systems →
READY TO INSTALL

Install the Rheem 315L Twin Element With JR Gas & Water

The Rheem 492315 is a practical high-capacity electric-storage option for suitable larger households wanting 315L-class hot-water delivery and additional twin-element recovery flexibility.

Before installation, confirm household demand, electricity tariff, element configuration, electrical circuit, physical access, available space, water pressure, valve arrangement, drainage and whether the job is an exact replacement or requires broader plumbing, electrical or relocation work.

Your electric storage hot water system is built to provide years of reliable hot water, but like any major household appliance, it requires regular maintenance to remain safe, efficient and covered under the manufacturer's warranty.

Many manufacturers specify routine maintenance throughout the life of the system. Following these recommendations helps maximise the lifespan of the unit, maintain safe operation and reduce the likelihood of unexpected breakdowns.

Homeowner Maintenance – Every 6 Months

Every six months, homeowners should carefully operate the Pressure & Temperature Relief (PTR) Valve and Expansion Control Valve (ECV) (where fitted).

This simple maintenance helps:

  • Confirm the safety valves are operating correctly.
  • Flush away mineral deposits that can cause the valves to seize.
  • Prevent excessive pressure from building inside the tank.
  • Extend the life of the safety valves.

Why is this important?

Over time, minerals naturally found in water can build up inside the valves. If they are never operated, they may become stuck or fail when they're needed most.

A seized PTR or ECV valve can lead to:

  • Excessive pressure inside the tank.
  • Continuous leaking from the valve.
  • Reduced system efficiency.
  • Premature component failure.
  • Potential safety risks.

Important: Always follow your manufacturer's instructions when operating the valves, as hot water will discharge during testing. If you're unsure or unable to perform this maintenance safely, contact a licensed plumber.

JR 6-Month Hot Water Health Check

Recommended Service – $99

While homeowner maintenance is important, a professional inspection provides additional peace of mind and can identify issues long before they become expensive repairs.

Our JR 6-Month Hot Water Health Check includes:

  • Inspection for water leaks and corrosion.
  • Testing of the PTR valve.
  • Testing of the ECV (where fitted).
  • Checking electrical operation.
  • Inspecting wiring and electrical connections.
  • Checking thermostat operation.
  • Inspecting the element for signs of failure (where possible).
  • Inspecting insulation and pipework.
  • Checking for unusual noises or signs of sediment build-up.
  • Confirming correct operation and water heating performance.
  • Identifying any components showing signs of wear.

Service Price: $99

Regular inspections help detect small problems early, reducing the likelihood of unexpected breakdowns and helping maximise the life of your hot water system.

Recommended 5-Year Major Service

Current Price: $449

Most electric storage hot water manufacturers recommend replacing several key components approximately every five years to maintain reliable operation and protect the storage tank.

Our comprehensive 5-Year Service includes:

  • Replacement of the sacrificial anode.
  • Replacement of the Pressure & Temperature Relief (PTR) Valve.
  • Replacement of the Expansion Control Valve (ECV).
  • Full inspection of the hot water system.
  • Electrical safety and operational testing.
  • Inspection of pipework, valves and fittings.
  • Leak and corrosion inspection.
  • System performance testing.

Why These Components Matter

Sacrificial Anode

The sacrificial anode protects the steel tank from internal corrosion.

Instead of the tank rusting, the anode slowly corrodes over time. Once it has been consumed, the tank itself begins to rust from the inside, often leading to leaks and complete tank failure.

Replacing the anode is one of the most effective ways to extend the life of a storage hot water system.

Pressure & Temperature Relief (PTR) Valve

The PTR valve is one of the most important safety devices on your hot water system.

It automatically releases water if pressure or temperature inside the tank becomes too high, protecting both the system and your home.

Over time, scale and mineral deposits can prevent the valve from operating correctly, making regular testing and replacement essential.

Expansion Control Valve (ECV)

The ECV manages pressure created as water expands during heating.

A correctly functioning ECV:

  • Reduces stress on the storage tank.
  • Protects plumbing components.
  • Helps extend the life of the hot water system.
  • Reduces unnecessary water discharge through the PTR valve.

If Your Hot Water System Isn't Working

Before arranging a service, there are a few simple checks you can perform:

  • Ensure the power is switched on at the electrical switchboard.
  • Check whether the hot water circuit breaker or safety switch (RCD) has tripped.
  • Confirm the isolation switch near the hot water system is turned on.
  • Check whether your electricity supplier has scheduled an off-peak interruption.
  • Look for obvious water leaks around the system.
  • Check whether water is continuously flowing from the PTR or ECV valve.
  • Listen for unusual noises such as excessive boiling, rumbling or banging.
  • Confirm the system has had sufficient time to reheat after heavy water usage.

If your system still isn't producing hot water, contact JR Gas & Water for professional diagnosis and repair.

General Signs Your System May Need Attention

Arrange a service if you notice:

  • Water leaking from the tank.
  • Constant dripping from relief valves.
  • Rust-coloured or dirty hot water.
  • Reduced hot water capacity.
  • Water taking much longer to heat.
  • Unusual noises during heating.
  • Visible corrosion.
  • Fluctuating water temperature.
  • Repeated electrical trips.

Early repairs are often significantly less expensive than replacing a failed hot water system.

Protect Your Warranty & Maximise System Life

Regular maintenance not only helps keep your hot water system operating safely and efficiently—it can also assist in meeting manufacturer maintenance requirements.

Ignoring recommended servicing may result in:

  • Premature tank corrosion.
  • Seized or leaking safety valves.
  • Reduced efficiency and higher running costs.
  • Unexpected loss of hot water.
  • Avoidable repair costs.
  • Shortened system lifespan.
  • Possible reduction or loss of manufacturer warranty, depending on the manufacturer's maintenance requirements.

A small investment in preventative maintenance can add years to the life of your hot water system and help avoid the inconvenience and expense of an unexpected replacement.

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.

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