Vulcan Duomax 125L Electric Storage Hot Water System
The Vulcan Duomax 125L Electric Storage Hot Water System is available from Installed Today as a supply-only electric hot water unit or as a complete supply and install package in selected Brisbane and Gold Coast service areas, where available.
Choose the unit only if you already have a licensed plumber and electrician arranged, or check your supply and install package before checkout to confirm installation suitability, access, valve kit requirements, water pressure, electrical requirements, indoor or outdoor location and available installation timeframes.
The Vulcan Duomax 125L is a compact electric storage hot water system designed for smaller households, units, townhouses and replacement installations where a larger 160L, 250L, 315L or 400L system is not required. With 125L hot water delivery, a 3.6 kW single element, vitreous enamel lined cylinder and indoor or outdoor installation suitability, it is a practical like-for-like replacement option for many existing small electric hot water systems.
About the Vulcan Duomax 125L Electric Water Heater
The Vulcan Duomax 125L is an electric storage hot water system that stores and heats water inside a vitreous enamel lined cylinder.
It is designed for smaller households and warmer climates where daily hot water demand is moderate. The 125L size can suit homes that need more capacity than a 50L or 80L unit, but do not need the extra storage volume of a 160L or 250L electric system.
This 3.6 kW model is commonly selected where a 125L electric storage unit is being replaced and the property has suitable plumbing, electrical supply, water pressure, drainage, access and installation space.
Buy Vulcan Duomax 125L Supply Only
Buy the Vulcan Duomax 125L supply only if you already have a licensed plumber and electrician arranged for installation.
The product price is for the unit only. Installation, valve kits, old system removal, disposal, electrical work, pipework changes, pressure control, access changes, base or tray requirements and compliance upgrades are not included unless selected separately as add-ons or part of an available install package.
Common search terms this product suits include:
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Vulcan Duomax 125L price
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6D1125G7 electric water heater
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125L electric storage hot water system
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3.6 kW electric hot water system
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Small electric hot water system
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Vulcan 125L supply only
Vulcan Duomax 125L Supplied and Installed in Brisbane & Gold Coast
The Vulcan Duomax 125L can be ordered with a supply and install option in selected Brisbane and Gold Coast service areas, where available.
The installed-from price is based on the product plus the selected standard installation option. Final pricing can vary depending on site conditions and any selected add-ons.
Extra work or add-ons may be required for:
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Valve kit replacement
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Old system removal
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Disposal
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Electrical work
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Circuit or isolator changes
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Pipework changes
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Water pressure control
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Base or tray requirements
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Restricted access
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Indoor drainage requirements
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Outdoor weather exposure requirements
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Relocation from the existing hot water position
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Non-compliant existing installation
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Two-person lift or delivery access requirements
Vulcan Duomax 125L Installation in Brisbane
Installed Today can help Brisbane customers order the Vulcan Duomax 125L as either a supply-only electric water heater or a supplied and installed package in selected service areas.
This model may suit Brisbane units, townhouses, smaller homes, granny flats and rental properties replacing an older 125L electric storage hot water system, especially where the existing location already suits a similar cylinder size and the electrical supply is suitable for a 3.6 kW single element unit.
Before installation, the site should be checked for access, drainage, water pressure, electrical supply, valve condition, pipework, base condition, lifting access and compliance requirements.
Vulcan Duomax 125L Installation in Gold Coast
Gold Coast homeowners, landlords, renovators and property managers can order the Vulcan Duomax 125L for supply only or supply and install where available.
This system may suit apartments, townhouses, smaller homes, rental properties and investment properties needing a reliable 125L electric storage replacement. Final installation suitability depends on the existing hot water location, plumbing, electrical supply, water pressure, access, base condition and whether any additional parts or labour are required.
Is the Vulcan Duomax 125L Right for Your Home?
This system may suit you if:
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You want a 125L electric storage hot water system
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You are replacing an existing 125L electric water heater
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Your household has light to moderate hot water usage
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You want a single element electric water heater
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You want a vitreous enamel lined cylinder
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You want a system suitable for indoor or outdoor installation where compliant
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You need a smaller storage system rather than a large family-sized unit
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You have suitable access, water pressure, drainage and installation space
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You have a suitable electrical connection or can arrange electrical work
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You want the choice of supply only or supply and install
Extra work may be required if:
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The system is being moved to a new location
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Existing valves are old, missing or non-compliant
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Electrical upgrades are required
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The existing circuit does not suit the 3.6 kW element
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Drainage or safe tray requirements apply
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Water pressure control is required
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Pipework changes are required
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Access is restricted
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The old system needs removal or disposal
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The installation area does not suit the tank size, weight or service access
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A larger system is better suited to the household’s usage pattern
Key Features of the Vulcan Duomax 125L
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125L electric storage hot water system
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Vulcan Duomax style
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Manufacturer part number: 6D1125G7
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Vulcan product reference: 601125G7 for the 3.6 kW model
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Tradelink product code: 309841
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3.6 kW single element
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Lead free model listing
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125L hot water delivery
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Designed for smaller families and warmer climates
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Vulcan lists max 4 people based on stated usage conditions
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Tradelink describes the unit as suitable for up to 3 people
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Vitreous enamel lined cylinder
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Suitable for internal and external installation where compliant
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Requires connection to continuous tariff
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Rp 3/4 hot water connections
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Dual handed connections listed by Tradelink
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850 kPa ECV setting
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680 kPa maximum water supply pressure with ECV
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800 kPa maximum water supply pressure without ECV
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1000 kPa relief valve pressure
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41 kg empty weight listed by Vulcan
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44 kg shipped weight listed by Vulcan
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1250 mm high x 480 mm wide x 515 mm deep
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WaterMark approved
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10 year cylinder warranty and 12 months parts and labour listed in product specification, subject to current warranty terms
Quick Specs
Brand: Vulcan
Range: Duomax
Product: Vulcan Duomax 125L Electric Water Heater
Product Code: 601125G7
Manufacturer Part Number: 6D1125G7
Tradelink Product Code: 309841
System Type: Electric storage hot water
Fuel Type: Electric
Tank Volume / Hot Water Delivery: 125L
Recommended Household Size: Smaller households, depending on usage
Installation Type: Internal or external where suitable
Element Type: Single element
Element Rating: 3.6 kW
Tariff Requirement: Requires connection to continuous tariff
Cylinder Type: Vitreous enamel lined cylinder
System Connections: Dual handed listed by Tradelink
Water Connections: Rp 3/4
ECV Setting: 850 kPa
Maximum Water Supply Pressure with ECV: 680 kPa
Maximum Water Supply Pressure without ECV: 800 kPa
Relief Valve Pressure: 1000 kPa
Dimensions: 1250 mm high x 480 mm wide x 515 mm deep
Tank Diameter / Width: 480 mm
Weight Empty: 41 kg
Weight Shipped: 44 kg
Lead Free: Yes, based on trade listing
WaterMark: Yes
Warranty: 10 year cylinder warranty and 12 months parts and labour listed in product specification, subject to current warranty terms
Vitreous Enamel Lined Cylinder
The Vulcan Duomax 125L uses a vitreous enamel lined cylinder. This lining helps protect the inside of the cylinder and supports long-term electric storage hot water performance when the system is installed and maintained correctly.
Water quality, pressure control, correct valve selection and compliant installation all play an important role in the service life of any electric storage water heater.
125L Storage Capacity
The 125L capacity makes this Vulcan Duomax model suitable for smaller households with light to moderate hot water use.
It may suit units, townhouses, small homes, rental properties, granny flats and lower-demand family homes where a 160L, 250L or 315L system is not required. The right size still depends on shower length, shower flow rates, baths, laundry use, climate, tariff setup and household routines.
Single 3.6 kW Element
The Vulcan Duomax 125L model requested is the 3.6 kW single element version.
A 3.6 kW element can suit many replacement installations where the existing electrical setup is compatible. Electrical suitability must still be checked before installation. Electrical work, circuit changes, isolator upgrades or compliance upgrades are not included unless selected or arranged separately.
Continuous Tariff Requirement
The Vulcan 125L electric water heater is listed as requiring connection to continuous tariff.
This is important because smaller electric storage systems may need more regular reheating availability than larger off-peak storage systems. Tariff setup should be checked before installation, especially if replacing an older hot water unit connected to a different electrical supply arrangement.
Internal or External Installation
The Vulcan Duomax 125L is suitable for internal or external installation where the location meets the required plumbing, drainage, access, electrical and compliance requirements.
For indoor installations, safe tray, drainage, service access and leak protection requirements should be checked before installation.
For outdoor installation, the system location must be suitable for weather exposure, service access, plumbing connections, base support and electrical compliance.
Dual Handed Connections
The Tradelink listing identifies the Vulcan Duomax 125L as having dual handed connection fittings.
Dual handed connections can help with replacement flexibility because they may reduce pipework changes compared with single-sided connection layouts. The supplied model and existing pipework should still be checked before installation.
Water Pressure Requirements
The Vulcan Duomax 125L has an ECV setting of 850 kPa, maximum water supply pressure of 680 kPa with ECV, maximum water supply pressure of 800 kPa without ECV and relief valve pressure of 1000 kPa.
If incoming water pressure is too high, pressure control may be required. Valve requirements should be checked before installation, especially when replacing older units where existing valves may be worn, missing or non-compliant.
Lead Free Model Listing
The Tradelink listing identifies this model as a lead free Duomax 125L electric water heater.
Lead free product listings are becoming increasingly important in plumbing product selection. Final suitability should still be confirmed against the product supplied, local requirements and the installer’s compliance checks.
Replacement Access Considerations
The Vulcan Duomax 125L is smaller than larger 160L, 250L, 315L and 400L electric storage systems, but it still requires suitable access for delivery, positioning and installation.
Before installation, access should be checked carefully, especially for stairs, tight side access, cupboards, raised platforms, laundry spaces or difficult delivery paths.
Vulcan Duomax 125L vs 160L Electric Storage
The Vulcan Duomax 125L is smaller than a 160L electric storage unit and may suit homes with lighter daily hot water demand.
A 160L model may be better for higher usage, longer showers, extra occupants or homes that regularly run out of hot water with a 125L tank. The right size depends on usage patterns, tariff setup and whether the household needs more stored capacity.
Vulcan Duomax 125L vs 250L Electric Storage
The Vulcan Duomax 125L is a smaller electric storage system, while the 250L model provides significantly more stored hot water capacity.
A 125L model may suit smaller households, units and lower usage. A 250L model may be better for families, higher occupancy, longer showers, higher laundry use or homes needing stronger whole-home hot water capacity.
Vulcan Duomax 125L vs Heat Pump Hot Water
A Vulcan Duomax 125L electric storage system uses an electric element to heat stored water. A heat pump uses heat from the surrounding air to heat water more efficiently under suitable conditions.
The Vulcan Duomax 125L may suit customers wanting a straightforward electric storage replacement. A heat pump may suit customers looking for an energy-efficient upgrade where the installation location has suitable airflow, drainage, electrical supply, noise considerations and available space.
Vulcan Duomax 125L vs Instant Electric Hot Water
The Vulcan Duomax 125L stores a set volume of hot water, while an instant electric system heats water as it flows through the unit.
A 125L storage system may suit small whole-home use better than many instant electric units. Instant electric systems may suit specific point-of-use applications but often require higher electrical capacity and may not suit every whole-home installation.
Common Uses
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Electric hot water system replacement
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125L electric storage replacement
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Smaller households
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Units and townhouses
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Smaller homes and granny flats
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Homes with light to moderate hot water usage
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Rental properties
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Investment properties
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Renovation projects
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Properties replacing an existing 125L electric unit
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Homes suited to continuous tariff electric hot water
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Indoor installations with compliant drainage and access
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Outdoor installations with suitable base and weather exposure
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Supply-only orders where a licensed installer is already arranged
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Supply and install orders in selected Brisbane and Gold Coast areas
Suitability depends on household size, hot water usage, tariff setup, installation location, plumbing condition, electrical supply, water pressure, access, drainage and compliance requirements.
Why Order From Installed Today?
Installed Today makes it easier to order the Vulcan Duomax 125L as either a supply-only product or a supplied and installed package where available.
You can choose the unit only if you already have a licensed plumber and electrician arranged, or select an installation option in eligible Brisbane and Gold Coast service areas. Valve kits and installation add-ons can be selected online where required, helping you build a clearer product and installation pathway before checkout.
Benefits of ordering from Installed Today include:
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Supply-only or supply and install options
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Brisbane and Gold Coast service area support
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Installed-from pricing shown separately from the product price
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Compatibility checks before installation
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Product-specific information to help compare models
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Optional add-ons available where suitable
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Clear separation between unit price, installation and extras
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Suitable for customers with their own licensed installer
Frequently Asked Questions
Can I buy the Vulcan Duomax 125L supply only?
Yes. You can buy the Vulcan Duomax 125L as a supply-only unit if you already have a licensed plumber and electrician arranged.
Can I get the Vulcan Duomax 125L installed in Brisbane?
Yes, supply and install may be available in selected Brisbane service areas, depending on location, access, site conditions and installation availability.
Can I get the Vulcan Duomax 125L installed in Gold Coast?
Yes, supply and install may be available in selected Gold Coast service areas, subject to service coverage, site suitability and installation availability.
Is installation included in the product price?
No. The product price is for the unit only unless you select an installed option. Installation, valve kits, disposal, old system removal, electrical work, pipework changes and other extras are not included unless selected separately.
What size is the Vulcan Duomax 125L?
The Vulcan Duomax 125L has 125L hot water delivery.
How many people is the Vulcan Duomax 125L suitable for?
Vulcan lists the 125L model as suitable for a maximum of 4 people based on stated usage conditions, while Tradelink describes the Duomax 125L as suitable for up to 3 people. Real suitability depends on shower length, water temperature, climate, outlet flow rates, tariff setup and household usage patterns.
What is the element size?
This model has a 3.6 kW single element.
Is it single element or twin element?
This model is listed as a single element electric water heater.
Can it be installed indoors?
Yes, it can be installed indoors where the location meets access, drainage, plumbing, electrical and compliance requirements.
Can it be installed outdoors?
Yes, it can be installed outdoors where the location is suitable and compliant.
Is it suitable for off-peak tariff?
The Vulcan 125L model is listed as requiring connection to continuous tariff. If you want an off-peak electric storage system, a larger model may be more suitable depending on household usage and electrical setup.
What are the dimensions?
The listed dimensions are 1250 mm high x 480 mm wide x 515 mm deep.
What does it weigh?
The listed empty weight is 41 kg and the listed shipped weight is 44 kg.
What are the water connections?
The listed water connections are Rp 3/4.
What is the ECV setting?
The listed ECV setting is 850 kPa.
What is the maximum water supply pressure?
The listed maximum water supply pressure is 680 kPa with ECV and 800 kPa without ECV.
What is the relief valve pressure?
The listed relief valve pressure is 1000 kPa.
Is it lead free?
The Tradelink listing identifies this model as lead free.
What is the manufacturer part number?
The Tradelink listing is for the 3.6 kW lead free model, commonly referenced as 6D1125G7.
What is the Vulcan product code?
The Vulcan product page lists 601125G7 for the 3.6 kW model.
What is the Tradelink product code?
The Tradelink product code is 309841.
Does it have dual handed connections?
Yes. Tradelink describes the Vulcan Duomax 125L as having dual handed connection fittings.
Is it suitable for replacing an old 125L electric water heater?
Yes, it may be suitable for like-for-like replacement of an older 125L electric storage water heater, provided the location, connections, electrical supply, water pressure and compliance requirements are suitable.
What warranty does it have?
The product specification shows a 10 year cylinder warranty and 12 months parts and labour, subject to current warranty terms. Warranty details should be checked before purchase because warranty terms can depend on model, installation and manufacturer conditions.
