Dux Hot Water System Price 2026
Dux hot water systems cost $893 to $6,130 for the unit alone, across 18 models we checked at Australian retailers on 13 October 2026. That covers Prodigy gas storage, Dux continuous flow, Proflo electric storage, Ecosmart and Airoheat heat pumps, and Ecosmart solar. Installation is extra, and the type you choose matters more than the badge: it sets both the upfront price and what you pay to run it every year.
These are unit prices. Get up to 3 installed quotes for a Dux or a better-value alternative, rebates applied.
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Electric storage (4 models)
Gas storage (4 models)
Gas continuous flow (3 models)
Heat pump (4 models)
Solar (3 models)
Retail prices including GST, before installation and before any rebate, from Australian Hot Water, Bunnings, Hot Water Shop. Checked 13 October 2026; retailer prices change often.
Every Dux Model We Priced
Each price links to the retailer listing it came from. Sizes are tank capacity in litres, or flow rate in litres a minute for continuous flow units.
Dux electric storage: $1,099 to $1,769
| Model | Size | Unit price | Retailer |
|---|---|---|---|
| Dux Proflo 160L 3.6kW Electric Storage | 160 L | $1,099 | Bunnings |
| Dux Proflo 250L 3.6kW Single Element Electric Storage | 250 L | $1,185 | Bunnings |
| Dux Proflo 315L 3.6kW Single Element Electric Storage | 315 L | $1,349 | Bunnings |
| Dux Proflo 400L 3.6kW Single Element Electric Storage | 400 L | $1,769 | Bunnings |
Typical running cost for this type: $1,200 - $1,800 a year (household estimate).
Dux gas storage: $1,225 to $1,639
| Model | Size | Unit price | Retailer |
|---|---|---|---|
| Dux Prodigy 4 Star 135L Gas Storage | 135 L | $1,225 | Bunnings |
| Dux Prodigy 4 Star 170L Gas Storage | 170 L | $1,419 | Bunnings |
| Dux Prodigy 5 Star 135L Gas Storage | 135 L | $1,562 | Bunnings |
| Dux Prodigy 5 Star 170L Gas Storage | 170 L | $1,639 | Bunnings |
Typical running cost for this type: $800 - $1,200 a year (household estimate).
Dux gas continuous flow: $893 to $2,499
| Model | Size | Unit price | Retailer |
|---|---|---|---|
| Dux 21L/min 50C Non-Condensing Continuous Flow (LPG) | 21 L/min | $893 | Bunnings |
| Dux 26L/min 50C Non-Condensing Continuous Flow | 26 L/min | $997 | Bunnings |
| Dux 32L/min 50C Gas Continuous Flow (lead free) | 32 L/min | $2,499 | Bunnings |
Typical running cost for this type: $800 - $1,200 a year (household estimate).
Dux heat pump: $2,998 to $4,183
| Model | Size | Unit price | Retailer |
|---|---|---|---|
| Dux Pro-Series Ecosmart 270L Heat Pump | 270 L | $2,998 | Bunnings |
| Dux Ecosmart 285L 2.6kW R290 Heat Pump (hard wired) | 285 L | $3,689 | Bunnings |
| Dux Airoheat 250L Heat Pump | 250 L | $4,060 | Hot Water Shop |
| Dux Ecosmart 285L Heat Pump | 285 L | $4,183 | Australian Hot Water |
Typical running cost for this type: $200 - $400 a year (household estimate).
Dux solar: $4,740 to $6,130
| Model | Size | Unit price | Retailer |
|---|---|---|---|
| Dux Ecosmart 250L Electric-Boosted Solar (2 panel) | 250 L | $4,740 | Hot Water Shop |
| Dux Ecosmart 315L Electric-Boosted Solar (2 panel) | 315 L | $5,210 | Hot Water Shop |
| Dux Ecosmart 315L Gas-Boosted Solar (2 panel) | 315 L | $6,130 | Hot Water Shop |
Typical running cost for this type: $150 - $400 a year (household estimate).
What a Dux Costs Installed
The unit is only part of the bill. A licensed plumber (and an electrician for some jobs) removes the old system, fits the new one and handles compliance. For a straight swap, the Yellow Pages Australia hot water cost guide (updated May 2026) puts labour at $500 - $800 (swap an electric storage unit for another) and $300 - $700 (swap a gas unit for another). Changing type costs more, because it can mean new wiring, a new circuit or moving the system.
- Dux 135L Gas Storage (135 L): $1,791 installed from Australian Hot Water
- Dux 315L Electric Storage (315 L): $1,966 installed from Australian Hot Water
Advertised like-for-like packages, each with the retailer's own conditions and service area. Checked 13 October 2026.
For installed prices by system type across Australia, see what a hot water system replacement costs.
Is a Dux Heat Pump Worth the Extra?
A Dux heat pump costs more to buy ($2,998 to $4,183 for the unit) but is far cheaper to run than electric or gas, at around $200 - $400 a year against $1,200 - $1,800 for electric storage. Federal certificates typically take $500 - $800 off at the point of sale, and several states add a rebate on top, which closes much of the gap.
Replacing gas in Victoria? From 1 March 2027, Victorian law requires a mains gas hot water unit that fails in an existing home to be replaced with an electric one. Limited exemptions apply, for example where there is no room for an electric unit. See what replacing gas hot water in Victoria costs.
Frequently Asked Questions
How much does a Dux hot water system cost?
Dux hot water systems cost $893 to $6,130 for the unit alone at Australian retailers, across the 18 models we checked on 13 October 2026. Electric storage $1,099 to $1,769; gas storage $1,225 to $1,639; gas continuous flow $893 to $2,499; heat pump $2,998 to $4,183; solar $4,740 to $6,130. Installation is extra.
What is the cheapest Dux hot water system?
The cheapest Dux unit we found was the Dux 21L/min 50C Non-Condensing Continuous Flow (LPG) (21 L/min) at $893 from Bunnings, supply only. The cheapest to buy is rarely the cheapest to own: running costs differ by hundreds of dollars a year between system types.
How much does it cost to install a Dux hot water system?
For a straight swap, installation labour typically runs $500 - $800 (swap an electric storage unit for another) and $300 - $700 (swap a gas unit for another), according to the Yellow Pages Australia hot water cost guide (updated May 2026). Retailer installed packages we checked for Dux ranged from $1,791 to $1,966. Switching type, for example gas to a heat pump, usually adds electrical and plumbing work, so get a quote for your home.
How much is a Dux heat pump hot water system?
Dux heat pumps cost $2,998 to $4,183 for the unit at the retailers we checked. Federal small-scale technology certificates typically take $500 - $800 off the price, usually as a point-of-sale discount from the installer, and some states add more on top.
Can I replace a gas Dux hot water system with another gas one in Victoria?
Until 28 February 2027, yes. From 1 March 2027, Victorian regulations stop plumbers installing a new mains gas water heater in an existing home, including replacing a failed one, with some exemptions. Most Victorian households replacing mains gas hot water will need an electric option such as a heat pump.
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