Non-Condensing Continuous Flow 21L | Dux Hot Water

Non-Condensing Continuous Flow 21L

Non-Condensing Continuous Flow 21L


Compact and efficient, Dux’s latest range of Continuous Flow units are an excellent option for Australian homes. Dux gas continuous flow water heaters heat the water only as needed, not wasting energy by keeping water in a tank hot, earning it up to a 6.4 star equivalent energy efficiency rating.

With several flow capacity models available, ensure you select a Dux continuous flow water heater that best suits to the number of outlets in the home.

Technical Information

Model Number:
Tank Size:

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Product Features

  • 6.1  star equivalent energy efficiency rating
  • Never run out of hot water
  • Space saving design
  • Providing Australian homes with superior technology straight from Noritz, a leading Japanese manufacturer of household water heaters
  • Electronic ignition means no standby pilot light
  • Suitable for 2 – 3 outlets
  • Also available in 17L, 26L and 32/min models
  • 12 year warranty on heat exchanger, including 3 year full parts and labour*

Optional Accessories

Accessories include separate controllers that allow you to select the hot water temperature you prefer - a welcome safety and convenience feature for families.

Optional accessories include:

  • Pipe covers
  • Recess boxes
  • Anti-theft kit
  • Flue diverters
Model Description
RCM1D Main Controller
RCB1D Bathroom Controller
RCB2D Bathroom 2 Controller
CF-L38 Flue Diverter
H1224 Anti Theft Kit
RBM7 Recess Box
CF-H33-K450 Pipe Cover

Other Products In Range

marathon warranty

The Marathon® Warranty

All Dux water heaters are backed by our Marathon Warranty. It's designed to provide peace of mind over the warranted term of the water heater.

Designed to go the distance

We prioritise quality into the design and manufacture of our hot water systems to make one of the best water heaters possible. The process begins with robust designs from our local research and development team. We specify superior ‘Plus plus’ cylinder designs in the majority of our storage products, combined with high strength steel and commercial grade enamel for longer product life. We leak test tanks from each days production for even greater quality assurance.

It's why we say our products are Built stronger to last longer™.


Never run out of hot water again with a Dux Always Hot continuous flow. They are compact in size, highly energy efficient and are backed by a 12 year heat exchanger warranty.

Dux Always Hot provides the choice between high performance (non-condensing) and ultra-high performance (condensing) continuous flow models. Superior technology straight from Noritz, a leading manufacturer of continuous flow water heaters.