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Thermann Smart Electric 400L Storage Hot Water System – Smart Technology for Big Homes, Big Comfort
Summary
Designed for large households that never want to run out of hot water, the Thermann Smart Electric 400L Storage system delivers reliable performance with cutting-edge smart features that help you save energy, reduce bills, and stay in control—all from your phone.
Why Choose the Thermann Smart Electric 400L?
Massive 400L Capacity for Big Families
Never run out of hot water again. Perfect for homes with 5+ people, this large-capacity system provides a consistent supply of hot water for multiple bathrooms, back-to-back showers, and daily laundry demands.
Smart Wi-Fi App Control
With the Thermann app, you're in complete control.
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Monitor usage in real-time
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Adjust heating times remotely
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Track energy consumption
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Set schedules to avoid heating during peak energy periods
Perfect for those looking to slash energy bills without sacrificing comfort.
Energy-Saving Operating Modes
Whether you’re home or away, Thermann has your back:
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Eco Mode: Learns your usage patterns to reduce energy waste.
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Schedule Mode: Set heating to match your daily routines.
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Holiday Mode: Save power while you're away.
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Manual Mode: For when you want full control.
Built Tough for Aussie Conditions
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Built-in protection for hard water areas
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Durable enamel-lined steel tank
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Backed by 10-year tank warranty and robust support
Custom Heating Options
Choose your heating element to match your energy use and recovery needs:
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1.8kW, 2.4kW, or 3.0kW options
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Fast recovery of up to 51.6L/hour @ 50°C rise
More hot water, faster—just the way you want it.
Easy Installation & Compliance
Supplied and installed by Brisbane & Gold Coast's 2023, 2024 & 2025 Best Plumbers, this unit includes:
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QBCC Form 4 compliance
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All valves and fittings
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Safe and clean removal of your old system
You get expert advice, clean workmanship, and total peace of mind.
Key Benefits at a Glance
✅ Smart Wi-Fi App – Control and monitor from anywhere
✅ Huge 400L Capacity – Great for 5+ people
✅ Eco Mode – Automatically lowers power use
✅ Hard Water Ready – Long-lasting durability
✅ Fast Recovery – Up to 51.6L/hour
✅ 10-Year Warranty – Built to last
✅ Installed by Award-Winning Experts in SE QLD
What’s Included in Your JR Gas & Water Installation?
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Full installation by licensed plumbers & electricians
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Removal of your old hot water system
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All required valves and fittings
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Thermann 400L Smart Electric Storage Unit
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Set-up of Wi-Fi app and operating modes
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QBCC Form 4 for full compliance
Questions About This System
1. Will 400L be enough for my household?
Yes—this is ideal for families of 5 or more with multiple bathrooms.
2. Can I control it from my phone?
Absolutely. The Thermann app gives you full control from anywhere in the world.
3. What’s the best mode for saving power?
Eco Mode learns your habits and minimises energy use without compromising comfort.
4. Is it safe for areas with hard water?
Yes—it’s designed with components that can handle hard water conditions.
5. Is installation included in the price?
Yes—our team handles everything, from delivery to installation and cleanup.
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
(Please rotate mobile device to landscape for easy viewing)
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 EXTERNAL installations
Ideal for direct swaps where the existing system meets compliance. No extra plumbing or electrical work included.
(EXAMPLE - A Rheem 250L 491250 replacing complaint Rheem 250L 491250 not a Rheem 250L 101250)
✅ 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 250L with a new Rinnai 315L 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 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 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 heat pump 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, 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 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
| Feature | Base | Silver | Gold 🏆 Best Seller | Sapphire 💰 Best Value | Diamond | Platinum |
|---|---|---|---|---|---|---|
| Existing Unit Must be Identical Make/Model/Series as Purchase | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ |
| 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) | ❌ | ❌ | ✅ | ✅ | ✅ | ✅ |
| Waste & System Disposal (Old System Removal) | ❌ | ❌ | ✅ | ✅ | ✅ | ✅ |
| 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!
IMPORTANT - All online packages are for external installations only, for internal installations please complete our quote request form.
🛠 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
Brand - Thermann
Model Number -
Volume - 400L
Width - 705mm
Height - 1705mm
Manufactured In - Australia
Cylinder/ Heat Exchange Material - Steel Enamel
Cylinder/Heat-Exchange Warranty - 10 Years
Noise Level - NAdBa
Dry Weight - kg
Energy Source -
Wifi Controller Built in or Compatible - Yes
Built In Timer - Yes
LED/LCD Status Indicator - No
Coefficient of Performance (COP) - 1
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.
