🏷️ Brand – Thermann
🔢 Model Number – 1318247
📦 Volume – 400L
📏 Width – 705mm
📐 Height – 1704mm
🌍 Manufactured In – Australia
🛠️ 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 – No
⏲️ Built-In Timer – No
💡 LED/LCD Status Indicator – No
📊 Coefficient of Performance (COP) –

Thermann Electric Boosted Solar 400L 44 Tube Installation in Brisbane & Gold Coast

The Thermann Electric Boosted Solar 400L 44 Tube is an evacuated tube split solar hot water system designed for homes wanting high-capacity solar hot water with a ground-level storage tank and roof-mounted solar tubes. It uses a 400L storage tank with a 44 tube collector setup and electric boosting for backup when solar gain is not enough.

What Is the Thermann Electric Boosted Solar 400L 44 Tube?

The Thermann Electric Boosted Solar 400L 44 Tube is an electric boosted solar hot water system that uses evacuated tubes on the roof to capture solar energy and transfer that heat back to a ground-level storage tank. A circulator moves water between the tank and the collector, and anti-frost protection is built into the system so solar hot water can still be provided in colder regions.

This 400L version uses a 44 tube collector and is designed as the largest capacity option in this electric-boosted evacuated tube range. It is listed as suitable for 4 to 6 people and is not designed for commercial use.

Why Choose the Thermann Electric Boosted Solar 400L 44 Tube?

One of the main reasons people choose the Thermann Electric Boosted Solar 400L 44 Tube is because it combines strong solar performance with the reassurance of electric backup. The evacuated tubes harness the sun’s energy to heat water, while the electric tank provides backup support when solar input is lower.

This model also suits buyers wanting the highest-capacity electric boosted solar option in the range. It is promoted as energy efficient, cost effective to run, and built with innovative technology, leading industry warranties, and a cyclone rated framework. It is also a practical option for homes in sunny climates looking to reduce monthly electricity bills.

Is the Thermann Electric Boosted Solar 400L 44 Tube Right for Your Home?

This model can be a strong fit for households with moderate to high hot water demand, especially homes wanting a split solar setup with the tank off the roof. It is a practical option for larger homes where smaller 250L or 315L systems may be too limited.

As with any solar hot water system, suitability depends heavily on the site. Roof space, tube orientation, pipe run distance, ground-level tank position, boosting arrangement, and available access all matter. The tubes are more effective when installed on a north facing roof to maximise the sun’s efficiency, so roof direction plays a role in performance.

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 mounting arrangements, pipework alterations, electric boost integration, valve upgrades, tempering requirements, electrical work, or changes to suit the final tank location.

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

A cheaper solar hot water system is not always the better buy once installation complexity, long-term efficiency, durability, and actual site suitability are taken into account. This system is built around evacuated tube solar technology, electric backup, lightweight framework, anti-frost protection, and strong warranty support rather than just bare minimum solar supply.

The bigger issue is installation suitability. Even a good solar system can become the wrong choice if the collector position, pipe runs, boosting arrangement, or tank location are not properly planned. That is why JR Gas & Water focuses on the overall installation result, not just the unit itself.

Professional Thermann Electric Boosted Solar 400L 44 Tube Installation in Brisbane & Gold Coast

JR Gas & Water provides professional Thermann Electric Boosted Solar 400L 44 Tube installation in Brisbane & Gold Coast, with the installation assessed around the roof layout, current hot water setup, pipework path, booster requirements, tank location, 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 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 the 44 tube collector layout, whether the ground-level tank location is workable, whether access is safe and practical, and what extra works may be required to complete the installation safely and compliantly.

What’s Involved in Installing the Thermann Electric Boosted Solar 400L 44 Tube?

Installing the Thermann Electric Boosted Solar 400L 44 Tube is very different from installing a ground-level electric storage system or a close-coupled solar unit. The storage tank stays at ground level while the solar tube collector is mounted on the roof, and the system relies on solar gain plus the electric boost element to deliver dependable hot water.

In a standard installation, the work may include removal of the old hot water system where applicable, positioning the new 400L tank, roof mounting the 44 tube solar collector, connecting solar flow and return pipework, integrating the electric boost arrangement, fitting or checking valves, tempering where required, commissioning the system, and testing operation. Depending on the site, that may also include roof access equipment, electrical work, extended pipe runs, upgraded valves, or changes to the existing plumbing layout.

The 400L tank in this range has a diameter of about 705mm, a tank height of about 1704mm, and a dry weight of about 116kg. This size is available in both bottom element and middle element configurations, depending on the exact version selected.

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. Split solar systems need practical assessment, not guesswork. The right result comes from making sure the system matches the roof, the plumbing layout, the boosting arrangement, the tank position, and the household demand.

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 brochure claims. With a model like the Thermann Electric Boosted Solar 400L 44 Tube, that means practical advice, realistic installation planning, and a stronger focus on what will actually work on site.

Thermann Electric Boosted Solar 400L 44 Tube Installation FAQs

How much does Thermann Electric Boosted Solar 400L 44 Tube installation cost in Brisbane or the Gold Coast?

Installation cost depends on the property and the system layout. A straightforward job with a suitable roof, practical tank position, and workable access is generally simpler than a job involving difficult roof access, long pipe runs, electrical work, boost changes, or other extra works. Final pricing depends on the existing setup and what is required for a safe and compliant installation.

Is the Thermann Electric Boosted Solar 400L 44 Tube right for my home?

It can be a strong option for homes wanting a split solar hot water system with 400L storage, a 44 tube collector, and electric boosting. It is generally better suited to larger family demand than lighter household use.

What is included in a standard Thermann Electric Boosted Solar 400L 44 Tube installation?

A standard installation typically includes the core labour and materials needed to install the ground-level tank, mount the collector on a suitable roof, and connect the system to the home’s hot water services where conditions allow. That may include tank placement, collector mounting, plumbing connections, valve assessment, electric boost integration, commissioning, and operational checks. Extra works may still be required depending on the site.

What warranty comes with the Thermann Electric Boosted Solar 400L 44 Tube?

This model has a 15 year warranty on the solar tubes, a 10 year tank warranty, and 1 year parts and labour for domestic use. On a timed recirculation system, the tank warranty drops to 3 years. Commercial use is also 3 years on the tank with 1 year parts and labour.

Can JR Gas & Water install the Thermann Electric Boosted Solar 400L 44 Tube 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?

✅ Base – For 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)

✅ Silver – For 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)

✅ Diamond – For 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)

✅ Platinum – The ultimate package
Includes everything – system 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

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!

Solar hot water systems are an efficient and environmentally friendly way to heat your water, using energy from the sun to reduce electricity or gas consumption. To continue operating efficiently and reliably, they require regular maintenance and servicing.

Like any hot water system, manufacturers recommend routine maintenance to maximise system performance, protect key components and support your manufacturer's warranty.

Homeowner Maintenance – Every 6 Months

Every six months we recommend carrying out a simple visual inspection of your solar hot water system.

Homeowners should:

• Carefully operate the Pressure & Temperature Relief (PTR) Valve.
• Operate the Expansion Control Valve (ECV) (where fitted).
• Check for water leaks around the storage tank and pipework.
• Inspect visible solar pipe insulation for deterioration.
• Ensure solar collectors are free from excessive dirt, leaves and debris where safely accessible.
• Check for signs of corrosion or rust.
• Listen for unusual noises from the system or circulating pump (where fitted).

Why is this important?

Regular operation of the PTR and ECV valves helps prevent mineral build-up that can cause the valves to seize or leak.

Keeping collectors and surrounding components clean allows the solar system to operate as efficiently as possible, while early detection of leaks or damaged insulation can prevent larger problems from developing.

Important: Always follow your manufacturer's instructions when operating safety valves, as hot water will discharge during testing. Do not climb onto your roof to inspect or clean collectors. If you're unsure, contact a licensed plumber.

JR 6-Month Solar Hot Water Health Check

Recommended Service – $99

Our professional inspection helps ensure your solar hot water system continues operating safely and efficiently while identifying issues before they become costly repairs.

Our technician will:

• Inspect the complete hot water system.
• Check for leaks and corrosion.
• Test the PTR valve.
• Test the ECV (where fitted).
• Inspect exposed solar pipework and insulation.
• Check storage tank condition.
• Inspect booster operation (electric or gas).
• Check circulating pump operation (where fitted).
• Inspect controller operation (where applicable).
• Confirm system heating performance.
• Inspect valves, fittings and pipework.
• Identify components showing signs of wear.

Service Price: $99

Routine inspections help maximise solar efficiency, reduce energy costs and minimise the likelihood of unexpected breakdowns.

Recommended 5-Year Major Service

Current Price: $449

Most solar storage hot water systems benefit from scheduled replacement of key components to maintain reliable performance and extend the life of the storage tank.

Our comprehensive 5-Year Service includes:

• Replacement of the sacrificial anode (where fitted).
• Replacement of the Pressure & Temperature Relief (PTR) Valve.
• Replacement of the Expansion Control Valve (ECV).
• Inspection of the solar collectors.
• Inspection of solar pipework and insulation.
• Inspection of circulating pump and controller (where fitted).
• Inspection of booster operation.
• Full operational testing.
• Leak and corrosion inspection.

Why These Components Matter

Sacrificial Anode

Most vitreous enamel-lined solar storage tanks contain a sacrificial anode.

The anode gradually corrodes instead of the steel storage tank, protecting it from internal rust. Once the anode has been consumed, the tank itself begins to corrode, which can eventually lead to leaks and tank failure.

Replacing the anode at the recommended interval is one of the best ways to extend the life of your hot water system.

Pressure & Temperature Relief (PTR) Valve

The PTR valve protects the storage tank by safely relieving excessive pressure and temperature.

Mineral deposits and normal wear can prevent the valve from operating correctly over time, making routine testing and replacement essential.

Expansion Control Valve (ECV)

Where fitted, the ECV controls pressure created as water expands during heating.

Maintaining the ECV helps reduce stress on the storage tank and plumbing system, contributing to a longer service life.

Solar Collectors & Pipework

Solar collectors capture the sun's energy to heat water, while insulated pipework transfers that heat to the storage tank.

Keeping collectors unobstructed and ensuring pipe insulation remains in good condition helps:

• Maximise solar efficiency.
• Reduce reliance on electric or gas boosting.
• Lower energy costs.
• Improve overall system performance.

If Your Hot Water System Isn't Working

Before arranging a service, check the following:

• Ensure power is switched on (for electric boosted systems).
• Confirm the gas supply is on (for gas boosted systems).
• Check circuit breakers and safety switches where applicable.
• Verify the booster has not been turned off.
• Inspect for visible water leaks.
• Ensure exposed solar pipe insulation has not been damaged.
• Check for controller fault codes (where fitted).
• Listen for unusual noises from the circulating pump (where fitted).
• Remember that several cloudy days may reduce solar heating, causing the booster to operate more frequently.

If your system is still not producing adequate hot water, contact JR Gas & Water for professional diagnosis and repair.

General Signs Your System May Need Attention

Arrange a service if you notice:

• Reduced hot water availability.
• Booster operating more frequently than usual.
• Water leaking from the tank or pipework.
• Constant dripping from relief valves.
• Visible corrosion.
• Damaged or deteriorated pipe insulation.
• Pump noise or failure (where fitted).
• Controller fault codes.
• Rust-coloured or dirty water.
• Unusual noises during operation.

Early servicing can often prevent more expensive repairs and extend the life of your solar hot water system.

Protect Your Warranty & Maximise System Life

Routine maintenance helps ensure your solar hot water system continues operating safely, efficiently and reliably.

Following the manufacturer's recommended maintenance schedule may also assist in maintaining warranty coverage.

Failure to maintain your system may result in:

• Premature tank corrosion.
• Reduced solar efficiency.
• Higher electricity or gas consumption.
• Leaking or seized safety valves.
• Unexpected loss of hot water.
• Shortened system lifespan.
• Possible reduction or loss of manufacturer warranty, depending on the manufacturer's maintenance requirements.

Preventative maintenance is one of the best ways to protect your investment, reduce operating costs and maximise the life of your solar hot water system.

Please note: Maintenance requirements vary between manufacturers and models. Always refer to your owner's manual for the maintenance schedule applicable to your solar hot water system. JR Gas & Water services all major solar hot water brands in accordance with manufacturer recommendations where applicable.

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.