Dux EcoSmart Electric Boosted Solar 400L
SunCity Hot Water supplies, installs and services the Dux EcoSmart Electric Boosted Solar 400L across the Sunshine Coast, Brisbane, Bribie Island and Gympie — backed by our quality workmanship guarantee. Call 1300 728 122.
Make the switch today to the Dux EcoSmart Electric Boosted Solar 400L system for a sustainable hot water solution that combines energy efficiency, reliability, and expert support from DUX. Experience the benefits of renewable energy and enjoy significant savings on your energy bills.

Key Features
European Controller and Circulator
Equipped with advanced European technology, the system features a high-performance controller and circulator that manage water heating efficiently while using minimal power. This ensures reliable operation and contributes to overall energy savings.
Mid-Point Electric Boosting
The system includes a mid-point electric booster, providing an additional 230 litres of hot water when solar energy is insufficient. This ensures a continuous supply of hot water during cloudy days or periods of high household demand.
Multi-Temperature Tank Sensors
Multi-temperature sensors monitor water temperatures throughout the tank, optimising solar energy use and preventing overheating. This intelligent design ensures the system always uses the most efficient heat source available.
Is your Dux EcoSmart Electric Boosted Solar 400L not working?
No hot water, leaking or playing up? Don't rush to replace it — our licensed local technicians repair, service and replace Dux systems across the Sunshine Coast, Brisbane, Bribie Island and Gympie. We carry common parts, so many repairs are done the same day.
Repair
Leaks, no hot water, element, thermostat and valve faults — diagnosed and fixed fast.
Service
Anode, valves and safety checks to keep your system running longer.
Replace
Past its best? We supply and install a new system, often the same day.
Product Documents

Large 400L Tank Capacity
The Dux EcoSmart system comes with a 400-litre tank, providing a generous supply of hot water for households of four to seven people. This ensures reliable hot water availability even during peak usage times.

Australian-Made Solar Tank With Dense 50mm Thick Polyurethane Insulation
The robust, Australian-made solar tank is built to withstand local conditions. Its 50mm thick polyurethane insulation minimises heat loss, keeping water hot for longer and maximising energy efficiency.

Eligible Incentives
Purchasing this system may make you eligible for up to $1,120 in Small-scale Technology Certificates (STCs), helping to reduce upfront costs and supporting a more sustainable choice for your home.
Installation, Maintenance & Warranty
Installation

The Dux EcoSmart Electric Boosted Solar 400L system features a straightforward installation process. Licensed professionals ensure seamless integration with your existing plumbing and electrical setup. Its lightweight solar collectors and compact tank design allow for a quick and efficient installation, tailored to your home.
Maintenance

Maintaining the Dux EcoSmart system is simple. Its durable design minimises the need for frequent repairs, though regular servicing is recommended to sustain peak performance. Periodic checks help identify potential issues early, keeping the system running efficiently for years to come.
Warranty

The system comes with a complete warranty package for peace of mind:
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7-year warranty on the tank
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5-year warranty on the solar collectors
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1-year warranty covering parts and labour
Dux provides support to promptly address any service or maintenance needs, ensuring reliable hot water supply throughout the system’s life.
Frequently Asked Questions
What happens if there’s not enough sunlight?
The system’s mid-point electric booster automatically activates to provide a consistent supply of hot water, even during cloudy days or periods of high demand.
What are the benefits of using solar hot water?
Solar hot water systems reduce energy bills, lower your household’s carbon footprint, and harness renewable energy, making them an environmentally friendly and cost-effective solution.
What happens if there is a problem with the system?
If any issues occur, Dux offers prompt service and repairs under the terms of the warranty, ensuring your system continues to operate efficiently and reliably.
How does a solar hot water system work?
Roof-mounted solar collectors absorb heat from the sun and transfer it to the water in an insulated storage tank. An electric or gas booster tops up the temperature on cloudy days so you never run out of hot water.
Is there a government rebate for solar hot water systems?
Yes — eligible solar hot water systems qualify for Small-scale Technology Certificates (STCs), which reduce the upfront cost. SunCity Hot Water will confirm your eligibility and handle the paperwork.
How long do solar hot water systems last?
A well-maintained solar hot water system can last 15 years or more, with the tank and collector panels covered by manufacturer warranties.
How much do solar hot water systems cost?
Solar hot water systems cost more upfront than electric, but government STC rebates and much lower running costs offset this over time. Call SunCity Hot Water on 1300 728 122 for an all-inclusive quote on the Dux EcoSmart Electric Boosted Solar 400L.
What size hot water system do I need?
As a guide, 1–2 people suit 125–160L, 3–4 people (a family of four) suit 250–315L, and larger households suit 400L. Continuous-flow gas units are sized by hot water flow rate instead. SunCity will help size the right system for your household.
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