DUX PROFLO ELECTRIC STORAGE HOT WATER
Dux Proflo 315L Electric Hot Water System – 315T1 & 315T2
The Dux Proflo 315L Electric Hot Water System is a large electric storage water heater designed for Australian homes requiring dependable stored hot water at full mains pressure.
Dux offers the 315L Proflo as the 315T1 single-element model and 315T2 twin-element model. The current manufacturer specifications list an actual storage capacity of 321 litres and a hot-water delivery rating of 315 litres.
Installed Today offers the Dux Proflo 315L as a supply-only system or with supply and installation across eligible Brisbane and Gold Coast service areas.
Dux Proflo 315L at a glance: an Australian-made electric storage water heater with a 315L hot-water delivery rating, 321L actual storage capacity, single- or twin-element configurations, dual-sided plumbing connections, indoor or outdoor installation suitability and full-flow mains-pressure hot water. Dux currently lists the 315L size for approximately 4–6 people depending on usage.
ABOUT THE SYSTEM
About the Dux Proflo 315L Electric Hot Water System
The Proflo 315L stores electrically heated water ready for use throughout the home. Dux positions its Proflo large electric range as a straightforward replacement option for existing electric storage systems, with multiple tank capacities and full mains-pressure delivery.
The 315L model sits between the 250L and 400L Proflo units and can suit households needing more stored hot water than a 250L system without moving to the larger 400L model.
Dux currently lists the Proflo 315L for approximately 4–6 people. Actual suitability depends on shower length, household routines, appliance use, electricity tariff, climate and the time available for the system to reheat.
WHO IT SUITS
Who Is the Dux Proflo 315L Best For?
Family Homes
The 315L size is designed for households needing substantial stored hot water, with Dux listing approximately 4–6 people depending on usage.
Electric Storage Replacements
Dual-sided water connections can make compatible replacement installations easier when replacing an older electric storage cylinder.
Indoor or Outdoor Installations
Dux lists the Proflo 315L for indoor or outdoor installation where the location satisfies the manufacturer's requirements.
PRODUCT AT A GLANCE
Dux Proflo 315L Key Details
315L
Hot Water Delivery
321L
Actual Storage Capacity
4–6 People
Dux Sizing Guide
10 Years
Tank Warranty*
*Dux specifies a 10-year tank warranty for qualifying single-family dwelling installations. Other applications have different warranty periods. Full Dux warranty conditions apply.
MODEL OPTIONS
Dux 315T1 vs 315T2
| Feature | 315T1 | 315T2 |
|---|---|---|
| Configuration | Single element | Twin element |
| Storage Capacity | 321L | 321L |
| Hot Water Delivery | 315L | 315L |
| Element Size | 3.6kW | 2 × 3.6kW or 2 × 4.8kW |
| Twin-Element Boost Capacity | Not applicable | 50L |
| Empty Weight | 93kg | 93kg |
| Tank Dimensions | Same cylinder dimensions | Same cylinder dimensions |
The right element configuration depends on the property's electrical supply, tariff arrangement and required recovery performance. Confirm the exact model and electrical suitability before ordering.
SIZING
Is a 315L Electric Hot Water System Right for Your Home?
Dux lists the Proflo 315L for approximately 4–6 people, but household size alone is not enough to confirm correct hot-water sizing.
Homes with long showers, multiple bathrooms, high simultaneous demand or appliances using significant amounts of hot water can require more storage or faster recovery. Electricity tariff availability can also affect how much hot water is available throughout the day.
It May Suit You If...
You are replacing a similar-sized electric storage heater or need greater stored capacity than a typical 250L system.
Check Your Tariff
Continuous and off-peak electricity arrangements provide different heating windows and can affect the correct tank size for a household.
Check the Site
The 315L cylinder is tall and heavy, so access, supporting surface, plumbing, drainage and electrical requirements need to suit the selected model.
KEY FEATURES
Key Features of the Dux Proflo 315L
Australian Made
Dux manufactures its large Proflo 80L–400L electric storage range in Australia for Australian homes and conditions.
Dual-Handed Plumbing
Water connections on both sides of the tank provide additional flexibility for compatible replacement installations.
Y-Class Enamel
The storage tank uses durable commercial-grade Y-class enamel together with a larger sacrificial anode to support tank life.
Rust-Resistant Polymer Base
A hard-wearing polymer base is designed to resist moisture and damage around the bottom of the cylinder.
50mm Dense Foam Insulation
Dux specifies 50mm thick dense foam insulation across its large Proflo electric range to reduce stored heat loss.
Lead-Free Certified Range
Dux states that the current Proflo electric storage range is certified lead-free.
TECHNICAL DETAILS
Dux Proflo 315L Specifications
| Specification | Dux Proflo 315L |
|---|---|
| Brand | Dux |
| Range | Proflo Electric Storage |
| Model Numbers | 315T1 single element / 315T2 twin element |
| Nominal Product Size | 315L |
| Actual Storage Capacity | 321L |
| Hot Water Delivery | 315L |
| Recommended Household Size | Approximately 4–6 people, depending on usage |
| 315T1 Element | 1 × 3.6kW |
| 315T2 Elements | 2 × 3.6kW or 2 × 4.8kW |
| 315T2 Boost Capacity | 50L |
| Electrical Supply | 230–240V AC single phase |
| Empty Weight | 93kg |
| PTR Valve Pressure Rating | 1000 kPa |
| Maximum Direct Inlet Pressure | 800 kPa |
| Installation Location | Indoor or outdoor |
| Water Connections | Dual-sided / dual-handed |
| Tank Protection | Y-class commercial-grade enamel and sacrificial anode |
| Base | Hard-wearing polymer base |
| Hard Water Option | Available |
| Manufacturing | Made in Australia |
| Tank Warranty – Single Family Dwelling | 10 years |
| Tank Warranty – Other Applications | 3 years |
| Parts & Labour Warranty | 1 year |
DIMENSIONS
Dux Proflo 315L Dimensions
1765mm
Overall Height
620mm
Overall Diameter
93kg
Empty Weight
321L
Storage Capacity
| Dimension | Measurement |
|---|---|
| Overall Height | 1765mm |
| Overall Diameter | 620mm |
| Hot Water Outlet Height | 1530mm |
| Cold Water Inlet Height | 195mm |
| Empty Weight | 93kg |
Dux also requires adequate service access for the element, thermostat, relief valve and sacrificial anode. The owner's manual specifies allowing approximately half the height of the water heater above the unit for top anode access.
INSTALLATION LOCATION
Can the Dux Proflo 315L Be Installed Indoors or Outdoors?
Yes. Dux lists the Proflo 315L for indoor or outdoor installation.
The cylinder must be installed on a flat, solid supporting surface, and the plumbing must not be used to support the water heater.
For indoor installations, Dux requires a properly drained safe tray where water leakage or discharge could otherwise cause property damage. Local plumbing requirements also apply.
INSTALLATION REQUIREMENTS
What Is Required to Install the Dux Proflo 315L?
Dux states that the Proflo electric storage water heater must be installed by a licensed tradesperson in accordance with applicable plumbing, electrical and local authority requirements.
- Flat, solid supporting surface
- Compatible hot and cold water pipework
- Correct PTR valve installation and drainage
- Suitable isolation and cold-water valve arrangement
- Pressure-reducing valve where incoming pressure requires it
- Appropriate tempering or delivery-temperature control where required
- 230–240V AC single-phase electrical supply
- Electrical circuit suitable for the selected element configuration
- Fixed-wiring disconnection in accordance with applicable wiring rules
- Safe tray and drainage where required for indoor installation
- Access for thermostat, element, PTR valve and anode servicing
- Compliance with applicable plumbing requirements
- Electrical installation compliant with AS/NZS 3000
WATER PRESSURE
Dux Proflo 315L Water Pressure Requirements
Dux specifies a 1000 kPa pressure rating for the Pressure & Temperature Relief valve used on the 315L Proflo models.
The current owner's manual states that the 315L water heater is designed for direct connection to water-supply pressures up to 800 kPa.
Where mains pressure can exceed or fluctuate beyond the permitted inlet pressure, Dux requires an appropriate pressure-reducing valve in the cold-water supply.
FULL MAINS PRESSURE
Full Mains-Pressure Hot Water
Dux specifies full flow pressure to all outlets across the Proflo large electric storage range.
This makes the Proflo 315L particularly relevant when replacing an existing mains-pressure electric storage system and retaining a conventional stored-hot-water arrangement.
Actual pressure and flow at showers and taps will also depend on the property's incoming water pressure, pipe sizing, valves and plumbing layout.
INSULATION
50mm Dense Foam Insulation
Dux specifies 50mm thick dense foam insulation for the 80L–400L Proflo electric storage range.
The insulation is designed to reduce heat loss from the stored water between heating cycles. Actual electricity use still depends on hot-water consumption, electricity tariff, climate, thermostat operation and system configuration.
HARD WATER
Is There a Hard-Water Option?
Yes. Dux lists a hard-water option for the Proflo 315L.
Dux publishes different sacrificial anodes for average-to-hard and extremely hard water areas. The correct anode and maintenance interval can be important where local water chemistry is aggressive.
For unusual water conditions, confirm the appropriate unit configuration and servicing requirements before installation.
SINGLE VS TWIN ELEMENT
Should You Choose the 315T1 or 315T2?
315T1 Single Element
The 315T1 uses one 3.6kW element. It may suit a compatible replacement installation where the property's electrical circuit and tariff are configured for a conventional single-element storage water heater.
315T2 Twin Element
The 315T2 uses two elements and provides a 50L boost section. Dux lists 2 × 3.6kW and 2 × 4.8kW configurations. Electrical and tariff suitability must be confirmed before ordering.
SUPPLY ONLY
Buy the Dux Proflo 315L Supply Only
Choose supply only if you require the Dux Proflo 315L unit and already have suitable licensed trades arranged for installation.
The supply-only price covers the selected water heater itself. Installation, valves, electrical modifications, plumbing changes, compliant base or tray work, old-system removal and disposal are separate unless specifically included in your order.
Before ordering, confirm whether the property requires the 315T1 single-element model or a suitable 315T2 twin-element configuration.
SUPPLY & INSTALL
Dux Proflo 315L Supplied & Installed
Supply Only
Order the unit by itself where suitable licensed plumbing and electrical installation are already arranged.
Brisbane Installation
Eligible Brisbane customers can check available supply-and-install options for replacement of a compatible electric storage hot-water system.
Gold Coast Installation
Eligible Gold Coast customers can also check installation options and any additional plumbing, electrical or access requirements before checkout.
AUSTRALIA-WIDE SUPPLY
Buy the Dux Proflo 315L Across Australia
Installed Today offers supply-only ordering across supported Australian delivery areas, with local supplied-and-installed options available in eligible Brisbane and Gold Coast locations.
Customers elsewhere can order the correct model for delivery where available and arrange compliant installation with appropriately licensed local trades.
Brisbane
Gold Coast
Sydney
Melbourne
Adelaide
Perth
BRISBANE INSTALLATION
Dux Proflo 315L Installation Brisbane
Eligible Brisbane customers can order the Dux Proflo 315L with an installation option where available. Compatible like-for-like replacements are generally simpler where the existing location, plumbing, drainage, valves and electrical supply already suit the selected unit.
The 315L cylinder measures approximately 1765mm high × 620mm diameter and weighs 93kg empty, so access through gates, doorways and installation areas should be considered before ordering.
Additional work may be required for non-compliant valves, pipe alterations, drainage, electrical changes, difficult access or relocation of the system.
GOLD COAST INSTALLATION
Dux Proflo 315L Installation Gold Coast
Eligible Gold Coast customers can also check supplied-and-installed options for the Dux Proflo 315L.
Before installation, confirm whether the existing system is single or twin element, whether the electrical circuit suits the new model and whether valves, drainage, base support and plumbing comply with the required installation standard.
WHAT MAY REQUIRE EXTRA WORK
Check These Items Before Ordering Installation
- Relocating the water heater to a new position
- Old, missing or non-compliant valves
- Extra hot or cold pipework
- Changes to PTR or safe-tray drainage
- Electrical circuit or switchboard modifications
- Changing between single and twin element configurations
- Restricted access to the installation location
- New supporting base requirements
- Safe tray installation for applicable indoor locations
- Tempering or compliance upgrades
- Removal or disposal of the existing system
MAINTENANCE
Dux Proflo 315L Maintenance
The water heater contains a Pressure & Temperature Relief valve and sacrificial anode that require ongoing attention during the life of the system.
Dux instructs owners to operate the PTR valve easing lever regularly and states that the valve should be checked by a licensed tradesperson or replaced at intervals not exceeding 5 years, or sooner where local requirements apply.
Dux also recommends a five-year service by a licensed tradesperson. Where total dissolved solids exceed 600 mg/L, Dux recommends this service every 3 years.
The recommended service includes replacing the PTR valve and anode, inspecting the expansion-control valve where fitted, draining and flushing the water heater and inspecting electrical components.
WARRANTY
Dux Proflo 315L Warranty
Dux warranty coverage depends on the application in which the water heater is installed.
| Application | Tank Warranty | Parts & Labour |
|---|---|---|
| Single Family Dwelling | 10 years | 1 year |
| All Other Applications | 3 years | 1 year |
The warranty period begins from the installation date where proof is available. Where proof of installation date is unavailable, Dux states that the warranty commences from the manufacturing date shown on the compliance plate.
Do not assume the 10-year tank warranty applies to every rental, commercial, multi-residential or other application. Dux's complete warranty conditions determine coverage.
COMMON QUESTIONS
Questions About the Dux Proflo 315L
What is the difference between the Dux 315T1 and 315T2?
The 315T1 is the single-element model with one 3.6kW element. The 315T2 is the twin-element model and is available with either two 3.6kW elements or two 4.8kW elements.
How much water does the Dux Proflo 315L actually store?
Dux's current technical information lists an actual storage capacity of 321 litres with a hot-water delivery rating of 315 litres.
How many people is the Dux Proflo 315L suitable for?
Dux currently lists the 315L model for approximately 4–6 people, depending on household usage.
What is the twin-element boost capacity?
The 315T2 has a published twin-element boost capacity of 50 litres.
Can the Dux Proflo 315L be installed outside?
Yes. Dux lists the Proflo 315L for indoor or outdoor installation where the site meets the manufacturer's requirements.
Can it be installed indoors?
Yes. Dux permits indoor installation, but a properly drained safe tray is required where leakage could cause property damage.
Does the Dux Proflo 315L provide mains-pressure hot water?
Yes. Dux specifies full flow pressure to all outlets.
What are the Dux Proflo 315L dimensions?
The 315T1 and 315T2 are approximately 1765mm high × 620mm diameter.
How heavy is the Proflo 315L?
Dux lists an empty weight of approximately 93kg. The filled operating weight is substantially greater, so a suitable supporting surface is required.
What is the maximum water-supply pressure?
Dux states that the 315L models are designed for direct connection to water-supply pressures up to 800 kPa. Pressure reduction is required where the supply can exceed the manufacturer's limit.
What is the PTR valve pressure?
The current Dux owner's manual specifies a 1000 kPa PTR valve for the 315L models.
What electrical supply does the Proflo 315L use?
The large Proflo electric range is designed for 230–240V AC single-phase supply. The circuit must also suit the selected element configuration.
Does the Proflo 315L have connections on both sides?
Yes. Dux describes the large Proflo electric range as dual-handed, with water connections on both sides of the cylinder.
Is the Dux Proflo 315L made in Australia?
Yes. Dux states that its Proflo 80L–400L large electric storage range is manufactured in Australia.
Does the Proflo 315L have a hard-water option?
Yes. Dux lists a hard-water option for the 315L and provides different sacrificial anodes for different water conditions.
Does the Dux Proflo 315L require a licensed installer?
Yes. Dux states that the water heater must be installed by a licensed tradesperson in accordance with applicable plumbing and electrical requirements.
How often should the Dux Proflo 315L be serviced?
Dux recommends a five-year service by a licensed tradesperson, reduced to approximately three years where total dissolved solids exceed 600 mg/L.
What is the warranty?
For qualifying single-family dwelling installations, Dux specifies a 10-year tank warranty and 1-year parts-and-labour warranty. All other applications receive a 3-year tank warranty and 1-year parts-and-labour warranty, subject to Dux's conditions.
Can I buy the Dux Proflo 315L supply only?
Yes. Installed Today offers a supply-only pathway for customers who already have suitable licensed installation arranged.
Can Installed Today install the Dux Proflo 315L?
Supply-and-install options are available in selected Brisbane and Gold Coast service areas. Final installation requirements depend on the existing plumbing, electrical supply, valves, drainage, access and selected model.
WHY INSTALLED TODAY
Why Order the Dux Proflo 315L From Installed Today?
Supply Only
Unit Ordering
315T1 / 315T2
Model Options
Australia Wide
Supported Supply
Brisbane & Gold Coast
Installation Options
Installed Today provides a clear pathway to order the Dux Proflo 315L as a product-only purchase or combine it with an eligible local installation option. Confirm the model configuration, existing electrical circuit, plumbing, valves, access and removal requirements before checkout.
FINAL CHECK
Is the Dux Proflo 315L Right for You?
The Dux Proflo 315L is suited to households requiring a large electric storage system with full-flow mains-pressure hot water. It is particularly relevant when replacing an existing large electric cylinder and when the property has suitable space, plumbing, drainage and electrical provision.
Choose between the 315T1 single-element and 315T2 twin-element configurations according to the property's electrical supply, tariff arrangement and recovery requirements. For installation orders, check access, valves, drainage, electrical requirements and old-system removal before confirming the job.
Tempering Valve and Element Information
*Element size information:
All electric hot water units are supplied as standard with a 3.6kW element unless otherwise stated on the product page, invoice, or order confirmation.
If a different element configuration is requested, such as 1.8kW or 2.4kW, the hot water unit may still arrive with the standard 3.6kW element fitted from the manufacturer. The requested 1.8kW or 2.4kW element will be supplied separately with the order for installation by a suitably licensed electrical contractor or licensed electrical licence holder.
Any element changeover, electrical connection, disconnection, wiring, testing, or modification must be carried out by a licensed electrical contractor or licensed electrical licence holder. Elements must not be changed, connected, modified, or tested by an unlicensed person.
Alternative elements supplied for non-standard configurations may be generic replacement elements and may not be the same brand as the hot water unit unless specifically stated. Generic elements are supplied to suit the requested element size and electrical configuration, but final suitability must be checked by the licensed installer before installation.
1.8kW and 2.4kW elements supplied separately with a hot water unit include a 12-month supply-only parts warranty from the date of purchase, provided the element has been correctly installed by a licensed electrical contractor or licensed electrical licence holder and used under normal operating conditions.
This element warranty covers the replacement supply of the element only. It does not include labour, call-out fees, electrical work, plumbing work, fault finding, removal, reinstallation, testing, travel, downtime, damage caused by incorrect installation, or any other associated costs. Warranty may be declined where the element has been incorrectly installed, dry-fired, modified, damaged, connected to incorrect voltage or wiring, affected by power issues, used in unsuitable water conditions, or installed by an unlicensed person.
Proof of purchase, installer details, electrical licence details, photos, and/or return of the faulty element may be required before a warranty claim is approved.
**Tempering valve information:
Where a hot water system is capable of delivering water above 50°C, a compliant tempering valve must be installed to control the temperature delivered to personal hygiene fixtures such as showers, baths, basins, and bathroom outlets. This helps reduce the risk of scalding and assists with meeting plumbing compliance requirements.
A tempering valve blends hot and cold water to deliver a safer controlled outlet temperature to required fixtures. The hot water unit itself may store water at a higher temperature, but the water delivered to personal hygiene outlets must be controlled where required by plumbing regulations.
If your property already has a suitable, compliant tempering valve installed, your licensed plumber can assess whether it is appropriate for use with the new hot water system. Existing valves may not always be suitable due to age, condition, compliance requirements, valve type, location, or system compatibility.
If a compliant tempering valve is not already installed, or if the existing valve is unsuitable, one must be supplied and installed by a licensed plumber as part of the hot water installation.
Tempering valves are not automatically included with every supply-only hot water unit unless specifically selected, listed as included, or purchased as part of a suitable valve kit. If a tempering valve is required, please purchase the appropriate valve kit with your order or arrange for your licensed installer to supply and install the correct tempering valve on site.
It is the customer’s responsibility to ensure the installation is completed by appropriately licensed trades and that all required valves, fittings, electrical work, plumbing work, and compliance requirements are allowed for as part of the installation.
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Whether you already know exactly what you need or you are still comparing options, Installed Today gives you a clearer way to buy the right product for your home, budget and timing.
Why Customers Choose Installed Today
Supply Only or Optional Installation
Choose the product on its own, or add installation where available on selected products and in eligible service areas. This gives you the flexibility to order the way that suits you best.
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See the product price upfront, then review available installation options and common add-ons before placing your order. You can check the package total before checkout, instead of waiting on basic pricing just to get started.
Product Details That Actually Help
Key specs, sizing details, warranty information, product features and suitability notes are shown clearly, making it easier to compare products properly before you buy.
Common Installation Add-Ons Available
Where relevant, you can add common installation extras such as valve kits, bases, access-related items, removal, electrical options or other site-specific upgrades before checkout.
Built Around Brisbane and Gold Coast Homes
Our product and installation options are selected with common Brisbane and Gold Coast homes in mind, including local water quality, access issues, plumbing layouts, replacement requirements and typical installation conditions.
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Add the product and selected options to cart in one order, instead of trying to organise separate suppliers, installers, parts and payments yourself.
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Designed to Make Your Decision Easier
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Choose supply only if you just need the product.
Choose an optional supplied and installed package where installation is available and you want the product and selected install options organised in one order.
Add common extras before checkout if your job needs additional parts, removal, access support or site-specific options.
It is a simpler way to organise the product, the selected extras and the parts of the job that matter most.
Important Installation Note
Installation availability, inclusions and add-ons vary by product type, service area, site access, existing services, selected options and property requirements.
Some jobs may require additional work, upgrades or checks before installation can proceed. Final suitability may need to be confirmed based on site conditions, plumbing, electrical requirements, valves, drainage, access and compliance requirements.
Supply-only orders do not include installation, old unit removal, disposal, valve kits, electrical work, plumbing alterations or compliance upgrades unless these are clearly selected or included in your order.
Fast Delivery and Install-Aligned Shipping
Installed Today makes delivery simple, whether you are ordering supply-only or choosing an optional install package.
For supply-only orders, you can select from available delivery options at checkout. For eligible orders with installation selected, shipping is included and coordinated to align with your selected installation period where possible.
Delivery Options
Same Day Delivery
Same day delivery may be available for selected hot water systems in Brisbane and Gold Coast metro areas when ordered before 7:00am.
Availability depends on stock, courier capacity, delivery location, product type and safe transport conditions.
Express Delivery
Express delivery is available on selected products and locations, with an estimated delivery timeframe of 1–4 business days.
Standard Delivery
Standard delivery is available on selected products, with an estimated delivery timeframe of 2–8 business days.
Free Shipping with Installation
When you select an eligible installation package, delivery is included as part of the supplied and installed order.
Your product delivery will be organised to align with your selected installation period where possible, helping avoid separate courier timing, storage issues or delays between delivery and installation.
Fast Metro Delivery
Most hot water orders in metro areas are delivered quickly, with many arriving within 1 business day depending on stock, location, order time and courier availability.
Weather and Transport Delays
Hot water systems are large, heavy products and cannot always be transported safely during rain or unsafe handling conditions.
Delivery timeframes may be affected if wet weather impacts loading, unloading, transport access or safe delivery conditions.
Express Delivery Refund
If your express delivery order takes longer than the estimated 1–4 business day express timeframe, your order will move to the standard 2–8 business day delivery timeframe and your express shipping charge will be refunded automatically.
Order Tracking
We will send your delivery details once your order has been dispatched or scheduled.
For supplied and installed orders, delivery timing may be coordinated around your selected installation period rather than sent as a separate courier-only delivery.
Need Help with Delivery?
Not sure whether to choose supply-only delivery or an optional install package? Contact our team before ordering and we can help you understand the best option for your product, location and timing.
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