Dux Proflo 400L

SunCity Hot Water supplies, installs and services the Dux Proflo 400L across the Sunshine Coast, Brisbane, Bribie Island and Gympie — backed by our quality workmanship guarantee. Call 1300 728 122.

Contact SunCity Hot Water today to learn more about the Dux Proflo 400L and arrange your installation. Experience reliable, low-maintenance hot water tailored for Australian homes and businesses.

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The Details

Key Features

Can Be Installed Indoors or Outdoors

The Dux Proflo 400L provides flexible installation options, suitable for both indoor and outdoor settings. This versatility allows you to position the unit conveniently without compromising space or aesthetics.

Hard Water Option Available

A hard water option is included, enhancing the unit’s durability and lifespan in areas with challenging water quality. The system is designed to resist the effects of hard water, ensuring reliable performance over time.

Made in Australia

Proudly manufactured in Australia, the Dux Proflo 400L reflects local expertise and quality, built to perform reliably in Australian conditions. Choosing this Australian-made product supports durability, sustainability, and local manufacturing.

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Repairs · Servicing · Replacements

Is your Dux Proflo 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.

System Not Working? Call 1300 728 122 Get a Free Quote

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

Owners Manual Range Brochure

Larger Anode to Extend Tank Life

The Dux Proflo 400L features an enlarged anode, which helps reduce internal corrosion and prolong the tank’s lifespan, ensuring efficient and reliable operation over time.

plumber showing water tank with hard-wearing, rigid polymer base preventing hot water system from damage

Hard-Wearing Polymer Base

Built with a robust polymer base, this water heater resists damage and moisture, making it durable enough to withstand the demands of everyday use in Australian conditions.

dux-proflo- being Manufactured in a Noritz facility

Durable Commercial-Grade Enamel

The tank is coated with Y-class commercial-grade enamel, providing superior protection against rust and corrosion. This premium finish enhances the unit’s longevity and ensures consistent performance throughout its service life.

Peace of Mind

Installation, Maintenance & Warranty

Installation

The Dux Proflo 400L is designed for easy installation, with water connections on both sides of the tank. This allows flexible positioning and a straightforward setup, whether the unit is installed indoors or outdoors.

Maintenance

Built from durable materials, the Proflo 400L requires minimal maintenance. Occasional checks are recommended to maintain optimal performance, but frequent repairs or servicing are generally not needed.

Warranty

The Dux Proflo 400L is backed by a 10-year tank warranty covering manufacturing defects, plus a 1-year parts and labour warranty. This comprehensive coverage provides peace of mind and confidence in the product’s quality and durability.

FAQs

Frequently Asked Questions

How easy is it to install the Dux Proflo 400L?

Installation is simple, with water connections accessible on both sides of the tank. This allows flexible positioning and easy connection, whether the unit is installed indoors or outdoors.

What kind of maintenance does the Dux Proflo 400L require?

The Proflo 400L is built for low maintenance. Its robust construction and high-quality materials minimise the need for frequent servicing, ensuring a reliable hot water supply with minimal attention.

Will the Dux Proflo 400L provide consistent water pressure?

Yes, the system is designed to maintain full flow pressure to all outlets, delivering consistent and reliable hot water for showers, dishwashing, and multiple appliances used simultaneously.

How much does a new hot water system cost?

The cost of a new hot water system depends on the type and size. Electric storage systems are the most affordable upfront, while heat pump and solar systems cost more but save on running costs and may qualify for rebates. Call SunCity Hot Water on 1300 728 122 for an all-inclusive supplied-and-installed quote on the Dux Proflo 400L.

How long does a hot water system last?

Most hot water systems last 8–12 years. Electric storage systems typically last 8–10 years, while heat pump and solar systems can last 15 years or more with regular servicing.

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.

How much does it cost to install a hot water system?

SunCity Hot Water quotes all-inclusive pricing — supply, installation by licensed plumbers and electricians, tempering and pressure-relief valves, removal of the old unit, QBCC fees and GST — with no hidden extras. Call 1300 728 122 for a fast quote.

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