Rinnai C/C Two Panel 300L Solar Hot Water System $6699 Installed - Water Heater - Solar
  • 🏆 2023–2025 ProductReview.com.au Award Winners
  • 🛡️ LIFETIME WARRANTY ELIGIBLE PRODUCT
  • Same Day Installation Available 365 Days a Year
  • ⭐ 1000+ 5-Star Google Installation Reviews

Rinnai Prestige Twin Panel 330L Solar Hot Water System | Supply+Install | LIFETIME WARRANTY

Hot water, hassle-free. This Rinnai is built for families who value reliability, efficiency, and peace of mind. With expert installation and unbeatable service, you’re in the best hands!
From
For basic installation
JR Gas & Water Specials
🍂 Autumn Easter Specials
Save $100 online

Discount automatically added to cart

Quick Specs & Benefits
  • 📦 Volume: 300L
  • 👨‍👩‍👧‍👦 Recommended Household Size: 5-6 people
  • 🛠️ Internal Cylinder Material: Steel
  • 🔥 STC Rebate Eligible - $1000 Upfront Discount Included

    What is an STC?

    STC stands for Small-scale Technology Certificate. It is part of an Australian Government scheme designed to encourage energy-efficient hot water systems and other eligible renewable technologies.

    How does it work?

    When your new system qualifies, STCs are created based on the expected energy savings and location of the installation. These certificates have a value, and that value is applied as an upfront discount to help reduce the installed cost.

    How is it shown on our jobs?

    For eligible systems, the STC value is already included as a flat rate $1000 upfront discount in the total installed price shown, so you do not need to claim it separately after installation.

    Who is eligible?

    Eligibility generally applies to installations of approved systems at Australian homes and businesses where the product, property type, and installation details meet current STC program requirements.

    If you are unsure whether your property or system qualifies, contact us before ordering and we can help confirm it.

2024–25 ProductReview Award Winner – JR Gas & Water
JR Gas & Water
Select Your Required Package and Install Timeframe Below

Choose your installation package first, then choose your preferred timeframe. Not sure which package suits your home?

STEP 1. - Select Post Rebate Installation Package (STC Rebates signed over to JR Gas & Water on install)
Timeframe
STEP 3. - Select Installation Area
Your Final Cost is
Regular price $7,999.00
Regular price Sale price $7,999.00
Save $-7,999
/
Installed hot water packages available in eligible JR Gas & Water service areas
Free delivery included with eligible installed packages
Licensed installation available across Brisbane, Logan, Redlands, Ipswich, Moreton Bay and Gold Coast service areas
Check your install postcode
Not 100% sure? Prefer a written quote first?

For solar hot water installations with roof access requirements, collector or panel changes, non-standard pipework, booster requirements, tight access, relocation work, valve upgrades, drainage issues, or uncertainty around the correct system size, our team can confirm the best option before you book.

Get Written Quote
✔ Service by Licensed Professionals  •  ✔ Fixed Price Services

🏷️ Brand – Rinnai
🔢 Model Number

📦 Volume
– 300L
📏 Width – mm
📐 Height – mm
🌍 Manufactured In
🛠️ Cylinder / Heat Exchange Material
– Steel
🛡️ Cylinder / Heat-Exchange Warranty
– 5 Years
🔇 Noise Level – dBa
⚖️Dry Weight – kg
⚡ Energy Source📡 WiFi Controller Built-in or Compatible
⏲️ Built-In Timer

💡 LED/LCD Status Indicator

📊 Coefficient of Performance (COP)

Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System Installation in Brisbane & Gold Coast

The Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System is a roof-mounted solar hot water system designed for homes wanting a larger-capacity solar setup with strong daily hot water storage and genuine solar contribution. It uses a 300 litre class close coupled design with twin solar panels, meaning the storage tank and collectors are mounted together on the roof for direct solar heating. For buyers comparing Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System installed pricing, supply and install options, or hot water replacement in Brisbane, the key is making sure the system and the installation both suit the property properly.

What Is the Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System?

The Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System is a close coupled solar hot water system that heats water directly on the roof using solar collectors, with natural thermosiphon circulation moving heated water into the tank above. Because the tank and collectors are mounted together, it does not rely on a separate ground-level storage tank or a pump-driven split solar layout.

This version is the larger-capacity twin panel option in the Sunmaster close coupled range, making it better suited to homes needing more stored hot water than the smaller one panel setup. It is designed as a genuine solar hot water system, with the option of electric boost or continuous flow gas boost depending on the installation configuration and what best suits the property.

Why Choose the Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System?

One of the main reasons people choose the Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System is because they want a larger solar storage system for higher household demand without moving to a split solar design. A twin panel close coupled system gives more solar collection area than the smaller single panel version, which can make it a better fit for larger families or homes with heavier hot water use.

This model also suits buyers wanting a practical roof-mounted solar option that keeps everything together in one compact rooftop layout. The twin panel arrangement supports stronger solar input, while the close coupled design avoids the need for a separate ground-mounted tank. It is also designed for natural thermosiphon operation, includes a thermal arrestor valve for safe operating temperatures, and uses a carbon steel tank with vitreous enamel lining and sacrificial anode protection.

Is the Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System Right for Your Home?

The Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System can be a very good fit for homes wanting a larger-capacity solar hot water system and having a roof that suits a close coupled installation. Because the tank and twin collectors are mounted together on the roof, this type of solar hot water system is generally best suited where the roof structure, pitch, orientation, access, and installation area all support a larger roof-mounted system.

A 300 litre twin panel solar setup can suit homes with stronger daily hot water demand and buyers wanting more solar collection than a compact one panel model. It may be especially suitable where the household wants a larger storage-style solar system without sacrificing ground space. That said, close coupled solar is not right for every property. Roof strength, safe access, plumbing layout, boosting arrangement, and correct final placement all need to be assessed properly.

Final installation scope depends on what is already at the property. Some jobs are straightforward replacements, while others may require extra works. Depending on the site, that may include roof suitability checks, structural support considerations, tempering requirements, booster integration, valve upgrades, pipework alterations, access equipment, or changes to suit high-wind conditions where relevant.

Why Choose a Quality Hot Water System Instead of a Cheaper Alternative?

A cheaper hot water system is not always the better result once installation complexity, durability, efficiency, and long-term suitability are taken into account. Solar hot water especially needs to be chosen around the home, not just around the lowest upfront price. The wrong system for the roof, household demand, or boost setup can quickly become poor value.

The Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System is designed as a genuine solar hot water solution rather than just a storage tank with a solar label attached. The larger-capacity close coupled layout, twin panel collection, natural thermosiphon operation, and purpose-built roof-mounted design all make it a more practical choice for the right type of home than a cheaper alternative chosen on price alone.

The bigger issue is installation suitability. Even a quality solar system can become the wrong choice if the roof access is poor, the structure is unsuitable, the plumbing path is impractical, or the boosting side is not properly planned. That is why JR Gas & Water focuses on the overall installation result, not just the product itself.

Professional Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System Installation in Brisbane & Gold Coast

JR Gas & Water provides professional Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System installation in Brisbane & Gold Coast, with the installation assessed around the roof layout, current hot water system, plumbing path, booster requirements, available access, and the home’s actual hot water usage. Whether it is a solar hot water replacement in Brisbane or hot water installation on the Gold Coast, the goal is to make sure the system suits the site rather than forcing a larger solar model into the wrong property conditions.

We also service surrounding areas including Logan, Ipswich, Moreton Bay and Redlands. Our approach is practical and installation-led. That means checking whether the roof is suitable for a larger close coupled tank and twin collectors, whether access is safe and workable, whether the home suits a 300 litre solar storage system, and what extra works may be required to complete the installation safely and compliantly.

What’s Involved in Installing the Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System?

Installing the Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System is very different from installing a ground-level electric storage system or a heat pump. The tank and both collectors are mounted together on the roof, so the installation has to account for roof structure, weight distribution, safe access, working area, plumbing runs, and the correct boosting arrangement from the start.

In a standard installation, the work may include removal of the old hot water system where applicable, roof positioning of the new close coupled solar unit, connection of hot and cold water services, integration of the selected boost arrangement, fitting or checking valves, tempering where required, commissioning, and final testing. Depending on the site, that may also include structural support considerations, cyclone frame compatibility where relevant, extended pipe runs, access equipment, roof mounting arrangements, or changes to the existing plumbing layout.

JR Gas & Water keeps the process practical and clear so customers understand what is standard, what may vary, and what may be needed for a safe and compliant installation. The final installation scope depends on what is already at the property, because some homes are well suited to a close coupled solar system and others need additional work to get the right result.

Why Choose JR Gas & Water?

JR Gas & Water is installation-led, which matters with solar hot water because the success of the job depends heavily on the property, not just the product name. Roof-mounted systems need practical assessment, not guesswork. The right result comes from making sure the system matches the roof, the plumbing layout, the booster arrangement, the household demand, and the real installation conditions on site.

We work with real homes across Brisbane and the Gold Coast, helping customers choose solar hot water systems that make sense for the property rather than relying on generic marketing claims. With a model like the Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System, that means practical advice, realistic installation planning, and a stronger focus on what will actually work at the home.

Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System Installation FAQs

How much does Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System installation cost in Brisbane or the Gold Coast?

Installation cost depends on the property and roof setup. A straightforward replacement on a suitable roof with workable access is generally simpler than a job involving difficult access, structural considerations, booster changes, upgraded pipework, or other extra works. Final pricing depends on the existing setup and what is required for a safe and compliant installation.

Is the Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System right for my home?

It can be a strong option for homes wanting a larger roof-mounted solar hot water system with 300 litre class storage and twin collectors, provided the roof and plumbing layout are suitable. The main considerations are roof space, structure, orientation, access, boosting arrangement, household demand, and whether a close coupled solar design is the right fit for the property.

What is included in a standard Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System installation?

A standard installation typically includes the core labour and materials needed to install the solar unit on a suitable roof and connect it to the home’s hot water services where conditions allow. That may include positioning the system, plumbing connections, valve assessment, boost integration, commissioning, and operational checks. Extra works may still be required depending on the site.

Can the Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System replace my current system?

In many cases, yes, but suitability depends on more than just storage size. Whether it can replace the current system depends on the roof, access, plumbing layout, booster setup, structural suitability, and whether a close coupled solar system is the right fit for the home overall. Some properties are a good match, while others may suit a different solar or non-solar setup better.

Can JR Gas & Water install the Rinnai Sunmaster Close Coupled 300L Twin Panel Solar Hot Water System in my area?

JR Gas & Water installs solar hot water systems across Brisbane and the Gold Coast, and also services Logan, Ipswich, Moreton Bay and Redlands. Availability depends on the job type, roof conditions, access, and site suitability, but we regularly handle solar hot water installation across these areas.

Solar Hot Water System Package Selection Guide

(Please rotate mobile device to landscape for easy viewing)

Choosing the right Solar 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?

BaseFor compliant replacements
Ideal for identical direct swaps where the existing system meets compliance. No extra plumbing, electrical work or disposal required or included.

(EXAMPLE - A Rheem Loline 325 replacing complaint Rheem loline 325 not a Rheem loline 400l)

SilverFor minor upgrades
Includes pipework alterations and a valve kit but does not include electrical modifications or system disposal. Designed for those swapping a similar system and working to a tight budget. 

(EXAMPLE - Swapping a 10year old Rheem Loline 400L with a new Rheem Loline 325 where the existing installation is good but requires pipework alterations to adapt the new unit and new valve set for warranty)

🏆 Gold (Best Seller)For standard installations
Covers old system removal and plumbing modifications, making it the most common choice for standard installations.

(EXAMPLE - Swapping a 20year old Dux Ecosmart with a new Envirosun AS315, Strip all down and redo the valves, pipework, drain lines, support base and dispose of the old unit)

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

(EXAMPLE - Swapping an old Conergy High Mount Boosted Unit with a new Envirosun AS400 mid mount boosted system that requires a lower hardwired electrical connection, then strip all down and redo the valves, pipework, drain lines, support base and dispose of the old unit)

DiamondFor homes needing extensive electrical work
Provides extra plumbing and electrical modifications, including a new electrical circuit, making it ideal for homes without existing or undersized wiring for a solar system.

(EXAMPLE - Swapping an old solar system with undersized electrical with a new solar that needs its own dedicated 20amp electrical circuit, type then strip all down and redo the valves, pipework, drain lines, support base and dispose of the old unit)

PlatinumThe ultimate package
Includes everythingsystem relocation, extensive plumbing and electrical upgrades, solar circulating lines, 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
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!

🛠 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!

If you're in Queensland and considering a heat pump hot water system, look no further than JR Gas & Water. 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 heat pump 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 heat pump 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 heat pump 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 heat pump 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.

Sustainable and Environmentally Friendly: Heat pump hot water systems are a sustainable and environmentally friendly option for heating water. They use renewable energy sources, such as air or ground heat, to heat water, resulting in lower greenhouse gas emissions and reduced energy bills. JR Gas & Water can help you make the switch to a more sustainable and cost-effective solution for your hot water needs.

This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.

Recently viewed