Rheem Stellar 315L DUAL Element Electric Hot Water System | 3 Hour Free Power Controlled Ready Setup

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: Rheem
🔢 Model Number: 4A2315
📦 Volume: 315L
📏 Width: 625 mm
📐 Height: 1760 mm
🌍 Manufactured In: Australia
🛠️ Cylinder / Heat Exchange Material:
🛡️ Cylinder / Heat Exchange Warranty: 12 Years
🔇 Noise Level: dBa
⚖️ Dry Weight: kg
⚡ Energy Source:
📡 WiFi Controller: Yes
⏲️ Built-In Timer:
💡 LED/LCD Status Indicator: No
📊 Coefficient of Performance (COP):

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

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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

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.