🏷️ Brand – Stiebel Eltron
🔢 Model Number –
📦 Volume – 18L
📏 Width – 225mm
📐 Height – 466mm
🌍 Manufactured In – Germany
🛠️ Cylinder / Heat Exchange Material –
🛡️ Cylinder / Heat-Exchange Warranty – 7 Years
🔇 Noise Level – dBa
⚖️ Dry Weight – kg
⚡ Energy Source –
📡 WiFi Controller Built-in or Compatible –
⏲️ Built-In Timer –
💡 LED/LCD Status Indicator – Yes
📊 Coefficient of Performance (COP) –

Stiebel Eltron DEL 18 Plus Installation in Brisbane & Gold Coast

If you are looking for Stiebel Eltron DEL 18 Plus installation in Brisbane or the Gold Coast, JR Gas & Water provides practical advice, supply and installation, and professional replacement services for homes that suit this style of unit. The Stiebel Eltron DEL 18 Plus is a 3 phase electric instantaneous hot water system designed to heat water on demand without a storage tank, making it a strong option for properties that want a compact, modern system supplied and installed by a local team that understands real installation conditions. For the right home, it can be a smart solution for a hot water replacement, a like-for-like changeover, or a new installation where the electrical setup and household demand are a good match.

What Is the Stiebel Eltron DEL 18 Plus?

The Stiebel Eltron DEL 18 Plus is an electronically controlled 3 phase electric instantaneous water heater. Instead of storing heated water in a tank, it heats water as it flows through the unit, which helps save space and suits homes that want hot water only when it is needed. This model is designed for one or several draw-off points and is suitable for pressure taps, making it more versatile than smaller point-of-use units that only suit a single sink or limited application.

It is a compact wall-mounted system with electronic temperature control, adjustable output temperature, and a backlit display that gives the user more control over everyday operation. The DEL 18 Plus is also designed for Australian installation requirements and suits homeowners who want a recognised brand in a modern electric instant format rather than a bulky traditional tank.

Why Choose the Stiebel Eltron DEL 18 Plus?

One of the main reasons people choose the Stiebel Eltron DEL 18 Plus is because it offers on-demand hot water from a compact unit without taking up the same room as a storage system. For the right property, that can mean a cleaner installation, less space used, and a more streamlined hot water setup.

This model also stands out because it is electronically controlled rather than relying on a more basic style of operation. That matters in day-to-day use because it is designed to help maintain a more stable hot water temperature and give the user better control. Features such as programmable temperature settings, ECO mode, and the backlit display add convenience, but the real benefit for most homeowners is that the unit is built to deliver a more refined hot water experience than a cheaper no-name alternative.

The Stiebel Eltron DEL 18 Plus is also made in Germany, which will appeal to buyers who want a recognised brand with a strong reputation for product quality, engineering, and long-term support.

Is the DEL 18 Plus Right for Your Home?

The DEL 18 Plus can be a very good fit for homes or applications where 3 phase power is available and where a compact electric instantaneous system makes more sense than a storage tank. It may suit certain houses, apartments, extensions, or replacement jobs where space is limited and a tankless electric option is preferred.

It is generally better suited to properties where the hot water usage pattern matches the performance of an electric instantaneous unit. If the household has very high simultaneous demand, multiple bathrooms in heavy use at once, or an electrical setup that is not suited to this style of system, another option may be more practical. In some homes, a storage system, gas continuous flow unit, or heat pump may be a better overall match depending on how the property is laid out and how hot water is used.

Installation suitability also depends on practical site conditions. JR Gas & Water considers the existing electrical supply, switchboard capacity, cable path, mounting location, access, and whether the job is a straight replacement or a more involved upgrade. If the existing system is not already a comparable electric instant setup, extra electrical work or changes to the installation approach may be required.

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

A hot water system is one of those products where the cheapest option is not always the best value once installation, reliability, and long-term ownership are taken into account. A recognised model like the Stiebel Eltron DEL 18 Plus gives homeowners more confidence in product quality, parts support, and overall performance than many low-cost alternatives.

That matters because hot water systems are not just bought on appliance price alone. They need to operate properly under real household conditions, work reliably over time, and be supported if servicing or replacement parts are ever needed. A quality brand also gives more confidence that the unit has been designed with proper temperature control, safety systems, and long-term durability in mind.

For many homeowners, paying for a better hot water system up front is really about reducing the risk of disappointment later. When a system is being installed into your home, long-term value, dependability, and proper brand backing are usually worth more than a small upfront saving on a lesser unit.

Professional Stiebel Eltron DEL 18 Plus Installation in Brisbane & Gold Coast

JR Gas & Water provides professional Stiebel Eltron DEL 18 Plus installation in Brisbane & Gold Coast for customers who want the unit installed properly to suit their property, services, and household needs. We install hot water systems with a practical, installation-led approach, because even a good unit can be the wrong choice if the site conditions, electrical setup, or water usage pattern have not been properly considered first.

For electric instantaneous systems like the Stiebel Eltron DEL 18 Plus, the installation is not just about mounting the unit on a wall. It also needs to suit the available power supply, circuit requirements, water connections, access, and the expected demand from the home. That is why hot water installation in Brisbane or hot water installation on the Gold Coast should be assessed as a real installation job, not just treated as a simple product delivery.

JR Gas & Water services Brisbane and the Gold Coast, along with surrounding areas including Logan, Ipswich, Moreton Bay and Redlands. Whether you need a straight hot water replacement in Brisbane or a new electric instantaneous unit installed by licensed professionals, we help make sure the system and installation path are right for the home.

What’s Involved in Installing the Stiebel Eltron DEL 18 Plus?

A standard Stiebel Eltron DEL 18 Plus installation will usually involve supplying the genuine unit, removing the old system where applicable, mounting the new heater in a suitable location, connecting it to existing plumbing and electrical services where those services are suitable, testing the unit, commissioning it, and providing basic operating guidance.

As with most hot water replacements, final installation scope depends on what is already at the property. Some jobs are straightforward like-for-like changes, while others may require extra works to bring the installation into line with current requirements or to make the new system function correctly. Depending on the site, that may include isolation work, electrical upgrades, circuit changes, switchboard work, pressure control items, pipe adjustments, or relocation-related work if the new unit is going in a different position.

Because this is a 3 phase electric instantaneous water heater, electrical suitability is one of the main considerations. If the property does not already have the right setup, extra electrical works may need to be quoted separately. 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.

Why Choose JR Gas & Water?

JR Gas & Water is not just selling a product box. We are focused on helping customers choose the right hot water setup for their home and making sure the installation suits the property, existing system, plumbing layout, fuel or power supply, and intended use. That matters with a model like the Stiebel Eltron DEL 18 Plus, because the right result depends just as much on installation suitability as it does on the product itself.

Customers choose JR Gas & Water because we understand hot water replacement work in real homes, not just brochure features. We look at whether the current system is a straight replacement, whether an upgrade is needed, whether the mounting position works, and whether the available electrical services make sense for the unit. For homeowners looking for reliable installers in Brisbane or the Gold Coast, that more practical approach helps reduce guesswork and leads to a better installation outcome.

Stiebel Eltron DEL 18 Plus Installation FAQs

How much does Stiebel Eltron DEL 18 Plus installation cost in Brisbane or the Gold Coast?
The final cost depends on whether it is a straightforward replacement or whether extra electrical or plumbing works are required. A like-for-like installation is usually simpler than a job that needs switchboard, circuit, or relocation changes.

Is the Stiebel Eltron DEL 18 Plus right for my home?
It can be a strong option if your property has 3 phase power and your hot water demand suits an electric instantaneous unit. It is not the best fit for every home, so usage patterns and electrical capacity should be checked first.

What is included in a standard Stiebel Eltron DEL 18 Plus installation?
A standard installation usually includes supply of the unit, removal of the old system where applicable, installation to suitable existing services, testing, commissioning, and basic handover. Any additional works needed at the property can be quoted separately.

Can the Stiebel Eltron DEL 18 Plus replace my current system?
In many cases, yes, but suitability depends on what system you currently have and whether the property’s electrical setup supports this type of unit. Straight replacements are generally simpler than conversions from a different system type.

Can JR Gas & Water install the Stiebel Eltron DEL 18 Plus in my area?
JR Gas & Water installs hot water systems across Brisbane, the Gold Coast, and surrounding service areas. If you are unsure whether your property is within range, we can confirm serviceability and the best installation path for your location.

Electric Continuous Flow Hot Water System Package Selection Guide

(Please rotate mobile device to landscape for easy viewing)

Choosing the right electric continuous flow hot water system package depends on your installation requirements, household size, and whether additional electrical or plumbing work is needed. 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 direct swaps where the existing system meets compliance. No extra plumbing or electrical work included.

(EXAMPLE - A Stiebel DEL27 replacing complaint Stiebel DEL27 not a Stiebel DHE27)

✅ 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 Stiebel DEL27 with a new Stiebel DEL27 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 Stiebel DHB21 with a new Stiebel DHB21, Strip all down and redo the valves, pipework 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 Stiebel DEL27 for a Rheem Eclipse 27kW with electrical changes required to adapt the new system, then strip all down and redo the valves, pipework, 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 wiring for an electric system.

(EXAMPLE - Swapping an old electric storage type system with a new instant electric unit that needs its own dedicated 3 Phase electrical circuit, then strip all down and redo the valves, pipework, and dispose of the old unit)

✅ Platinum – The ultimate package
Includes everything – system relocation, extensive plumbing and 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!

🛠 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 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.