Dux Ecosmart Gas Boosted Solar Hot Water System 400L
SunCity Hot Water supplies, installs and services the Dux Ecosmart Gas Boosted Solar Hot Water System 400L across the Sunshine Coast, Brisbane, Bribie Island and Gympie — backed by our quality workmanship guarantee. Call 1300 728 122.
Upgrade to the Dux Ecosmart 400L Gas Boosted Solar Hot Water System today and enjoy energy-efficient, reliable hot water with the support of SunCity Hot Water's expert installation and maintenance services. Embrace sustainable living and reduce your energy costs with this innovative system.

Key Features
400L Ground-Mounted Solar Tank
The Dux Ecosmart system includes a generous 400-litre ground-mounted solar tank, providing ample hot water to meet the demands of daily household use. This capacity is well-suited for larger families or homes with multiple bathrooms, ensuring reliable hot water supply throughout the day.
2 Roof-Mounted Collectors
The system features two high-efficiency roof-mounted solar collectors that capture solar energy to heat your water. Positioned to optimise solar gain, these collectors maintain performance and reliability even in varied Australian weather conditions.
6-Star Continuous Flow Gas Boosting
A 6-star continuous flow gas booster delivers hot water on demand, ensuring a constant supply even during peak usage. This feature provides energy-efficient backup heating, giving households peace of mind that hot water is always available when needed.
Is your Dux Ecosmart Gas Boosted Solar Hot Water System 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

Reliability and Consistency
The gas-boosting feature ensures a steady supply of hot water regardless of solar conditions, giving households confidence that their hot water needs will always be met.

Sustainable Energy Solution
By harnessing renewable solar energy, the system reduces reliance on traditional energy sources. This not only lowers household energy bills but also contributes to environmental sustainability.

Eligible for Government Incentives
Homeowners may be eligible to receive $910 in Small-scale Technology Certificates (STCs), helping to offset the upfront installation cost and making solar hot water a more affordable, eco-friendly choice.
Installation, Maintenance & Warranty
Installation

Installation of the Dux Ecosmart Gas Boosted Solar Hot Water System is handled professionally by SunCity Hot Water. Our experienced team manages everything from site assessment to full system setup, ensuring your solar hot water system is installed safely and efficiently. This ensures your home can start enjoying reliable hot water promptly, with confidence in the system’s performance.
Maintenance

The Dux Ecosmart system requires minimal maintenance, making it a hassle-free solution for homeowners. SunCity Hot Water provides ongoing support and servicing to keep the system operating at peak efficiency. Routine inspections and timely maintenance help prolong the lifespan of the system, ensuring consistent performance for years to come.
Warranty

The system comes with a comprehensive warranty package reflecting Dux’s commitment to quality. This includes a 7-year warranty on the tank, a 5-year warranty on the solar collectors, and a 1-year parts and labour warranty for any repairs within the first year. Backed by SunCity Hot Water, any warranty concerns are promptly managed, giving you peace of mind with your investment.
Frequently Asked Questions
What are the environmental benefits of using this system?
By harnessing solar energy, the Dux Ecosmart system reduces reliance on conventional electricity or gas, lowering your household’s carbon footprint and supporting a more sustainable, environmentally friendly lifestyle.
Can the system work in areas with limited sunlight?
Yes. The integrated 6-star continuous flow gas booster ensures a reliable supply of hot water even during periods of low solar energy, maintaining consistent performance regardless of weather conditions.
How often should I service the system?
It is recommended that the system be serviced at least once a year by a qualified professional. Regular servicing helps maintain efficiency, prolong system life, and identify any issues early to ensure uninterrupted hot water supply.
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 Gas Boosted Solar Hot Water System 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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