
21L NON CONDENSING
A capacity to suit
Non-condensing range is available in four different capacities
Product Features
- 6.1 star equivalent energy efficiency rating
- Never run out of hot water
- Space saving design
- Available in pre-set 50ºC and temperature unlocked models
- Includes a status display monitor
- Fits into current major competitor recess boxes
- Superior technology straight from Noritz, a leading manufacturer of household water heaters
- Electronic ignition means no standby pilot light
- Suitable for 2 outlets
- Also available in 21L 26L and 32L/min models
- 12 year warranty on heat exchanger, including 3 year full parts and labour*
*Full warranty terms and conditions are in the Owner’s Manual.
Technical Information
Compact and efficient, Dux’s latest range of Continuous Flow units are an excellent option for Australian homes. Dux Always Hot 21L/min gas continuous flow water heaters heat the water only as needed, not wasting energy by keeping water in a tank hot, earning it a 6.1 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.

At a glance
- 6.1 star equivalent energy efficiency
- Compact in size, highly energy efficient
- Perfect for 2 bedroom units and small villas
- 12 year warranty on heat exchanger, including 3 year full parts and labour*

Ideal for retrofits
The 17L, 21L & 26L/min model features water and gas connections in identical locations to those found on current major competitor models.
Compact in size
Lightweight, compact & efficient. They are ideal for apartments & when space is at a premium, like narrow passageways.


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


Never run out of hot water
Heats water on demand. When an outlet or shower is switched on, the heat exchanger starts to heat the water, and keeps heating as the outlet is open
Backed by Noritz
Providing Australian homes with superior technology straight from Noritz, a leading manufacturer of household water heaters


A Capacity to Suit
Non-condensing range is available in four different capacities, and a choice of temperature locked 50°C models, or temperature unlocked models and in both natural gas & LPG
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™.

HOT WATER ON DEMAND
WHEN YOU NEED IT
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.