- Capacity
- 400L
- Element
- Twin element
- Tank
- stainless steel
- Warranty
- 10-year cylinder
- Installation
- Internal or external
Aquamax · Electric storage
Aquamax 400L Stainless Steel Electric Hot Water System, Twin Element
The Aquamax 400L is part of the Aquamax stainless steel electric range. The stainless tank runs at mains pressure, so several outlets stay strong at once, and it is rated for internal or external installation. At this size it suits a large family or a high-demand home.
At 400L this is a twin-element electric storage tank. The twin element adds a daytime boost for high hot-water demand, on top of the off-peak element.
- Stainless steel tank
- Mains pressure — strong flow to several outlets at once
- Rated for internal or external installation
- 10-year cylinder warranty
- Twin element — daytime boost for high demand
Why this unit
What makes this Aquamax unit a good pick
The reasons are practical rather than marketing.
Supplied and installed by our own licensed plumbers and gasfitters.
Tank
Stainless steel at mains pressure
A stainless cylinder at full mains pressure keeps the flow strong when more than one tap is open.
Warranty
10-year cylinder cover
Backed by a 10-year cylinder warranty.
Install
Inside or out
Rated for internal or external installation, so it suits most positions.
Build your order
Add the Aquamax 400L Stainless Steel to your order
Pick the model and add any extras your property needs — professional installation is included on every system. The total updates as you go, and we confirm everything with you before any work is booked.
Detail
Specifications, delivery and care
The figures and terms below apply to this model. Open whichever section you need.
| SKU | 89410 |
|---|---|
| Capacity | 400L |
| Element configuration | Twin element |
| Tank | Stainless Steel |
| Cylinder warranty | 10-year cylinder |
| Installation | Internal or external |
| Fuel | Electric |
Delivery areas
We deliver hot water systems, parts and accessories across New South Wales and to selected areas throughout Australia. Availability can vary with your postcode and the size of the product, so contact us first if you are outside the standard delivery area.
Delivery timeframes
Estimates only, and they can be affected by courier delays, weather or other events outside our control.
- Sydney metro: 1 to 3 business days
- Regional NSW: 2 to 7 business days
- Interstate: 3 to 10 business days
Delivery charges
Shipping is calculated at checkout from your delivery location, the size and weight of the product, and any installation requirements. Some products and promotional offers include free delivery within selected metro areas.
Installation deliveries
Where installation is booked with your purchase, our team contacts you to arrange a date and time once the order is confirmed. Scheduling depends on technician availability and your location.
On arrival
Please inspect your order when it arrives. If it looks damaged, incomplete or incorrect, tell us within 48 hours and include photographs where you can.
Returns
We comply with the Australian Consumer Law. Nothing here limits your rights under the Competition and Consumer Act 2010 (Cth).
Change of mind returns may be accepted at our discretion when the request is made within 30 days of delivery, the product has not been installed or used, it remains unopened in its original packaging and it is in resalable condition. Return shipping for approved change of mind returns is generally the customer's responsibility. Special order and custom products cannot be returned for change of mind.
If a product is faulty, damaged or not as described, contact us as soon as you can. Depending on the circumstances we may repair it, replace it, provide a refund or arrange collection. If you receive the wrong product, contact us within 48 hours and we will arrange a replacement or collection at no extra cost where the error is ours.
How to request a return
Contact our team with your order details, explain the reason, send photographs if we ask for them, and wait for return instructions before sending anything back. Returns sent without prior approval may not be accepted. Approved refunds go back to the original payment method, usually within 5 to 10 business days of the return being received and inspected.
Full terms are on the shipping and return policy page.
An electric storage unit has an element, a thermostat and a sacrificial anode. There is no flue, so care is about the valves and the anode that protect the tank.
- Lift the temperature-and-pressure relief (TPR) valve lever every six months and check it reseats without dripping.
- Have the anode checked within the warranty period to keep the tank protected, especially on hard water.
- Keep the unit accessible so the element and thermostat can be serviced if needed.
- Book a service if the water is slow to heat, runs out quickly, or the circuit keeps tripping.
If something is not right, our phone line is attended 24 hours on 1300 096 668.
How it works
From first call to hot water back on
The same four steps apply whether you are replacing a failed unit or planning an upgrade.
Tell us what is happening
Call or order online with your suburb and the system you have now. Photos of the unit and its data plate help a great deal.
We scope and quote
We confirm the model, the installation and any extras the site needs, then come back to you before anything is booked.
We supply and install
We bring the unit, disconnect the old system, install and commission the new one, and check the valves are working as they should.
We clear the site
The old unit is taken away where you have asked us to, the work is tested in front of you, and you get the paperwork and warranty details.
Related products
Other systems we supply and install
These are the units we are asked about most often alongside it.
Common questions
Aquamax 400L Stainless Steel questions
Aquamax electric storage units carry a manufacturer's warranty — commonly up to 7–10 years on the cylinder, with shorter terms on the element, parts and labour. We confirm the exact warranty for this model in writing before you order, and we handle any warranty claim for a system we installed.
At 400L it suits a smaller household or a light-use home. For a family running several outlets at once a larger tank or a continuous flow unit may suit better — tell us your usage and we'll confirm.
We supply and install as one job. Installation is included on every system here, so the electrical and valve work is done to code by a licensed team. If you have your own electrician and want supply only, ask us and we will sort that out.
Some models come as a plug-in (GPO) unit and others hard-wire to a circuit, depending on the size and element. Tell us what's at the location and we'll confirm which applies and whether the point is already there.
This unit is suitable for internal and external use, so it can go inside or on an external wall — we confirm the position when we quote.
A tempering valve is mandatory on storage type systems, so it applies here. The rest depend on the site: removal of the old unit, an isolation valve, or a pressure limiting valve where mains pressure runs high. We confirm the final list with you before any work is booked.
Ask about this system
Questions about this Aquamax system?
Tell us where the unit would go and what it needs to serve, and we will confirm whether this size suits it and what the installation involves before you order. If your hot water is out right now, calling is faster.
A straight answer on fit
We will say if a different system suits your property better, rather than selling you this one.
Phone attended 24 hours
Hot water emergencies do not keep business hours, so neither does the line.
Based at Lidcombe
93B John St, Lidcombe NSW 2141, servicing Sydney and Greater Sydney.
Aquamax 400L Stainless Steel Electric Hot Water System, Twin Element enquiry
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