AquaMAX Gas Storage G390SS

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AquaMAX G390SS Gas Storage – up to a huge 390 litre first hour delivery

The AquaMAX G390SS gas storage hot water heater is the superior hot water solution for a larger home.

aquamax hot water system

The 155 litre steel tank has the capability to provide a huge 390 litre first hour delivery and will provide enough hot water to a home with 3 or more bathrooms, or for between 3-6 people.

AquaMAX G390SS gas storage hot water heater

This smart hot water heater has a high energy rating of 5 stars – so straight away you can see just how efficient the AquaMAX G390SS gas storage hot water heater is.

The AquaMAX G390SS is available to operate on natural gas and designed for external installation only. Upon installation there is also the option for your plumber to add a twin temperature delivery.

The twin temperature delivery option provides convenience and safety as it allows for the hot water temperature in your kitchen and bathroom to be set at 65°C and for the hot water in the bathroom to be set at 50°C or lower to reduce the risk of hot water scalding which can easily occur to young children, the elderly or mobility impaired.

Another advanced feature of the AquaMAX G390SS gas storage hot water heater is the patented in-built mixing valve. This enables the G390SS to provide up to a 390 litre first hour delivery and can be adjusted to allow as much as 205 litre per hour delivery* (depending on the hot water temperature setting).

Backed by an extremely high 10 year warranty* on the stainless steel cylinder you can’t go wrong with the AquaMAX G390SS.

No Interest Ever!* Payment Plan Options Available

No Interest Ever!* payment plan options available on hot water heater replacements to help ease any financial stress this burden may cause. If your aquamax hot water heater is leaking, or you have no hot water, we can often have a plumber to you within the hour*.

AquaMAX G390SS gas storage stainless steel cylinder provides superior quality

The AquaMAX G390SS gas storage hot water heater comes with a superior stainless steel water storage cylinder.

AquaMAX are known as the leaders in the industry when it comes to their innovative stainless steel cylinder designs. You can rest assured that a stainless steel storage cylinder will resist corrosion for much longer than a comparative vitreous enamel storage cylinder and with no sacrificial anode being required there are less maintenance requirements. In turn, providing you with a cost effective hot water heater that is durable and has been built to last.

AquaMAX are proudly Australian owned and operated and their hot water heater range has been perfectly designed to suit our climate conditions.

Want to know more about the AquaMAX G390SS gas storage hot water heater?

For expert advice and to know if the AquaMAX G390SS is the right hot water heater for your home contact a hot water plumber professional from Jim’s Plumbing.

Our fully qualified plumbers can provide you with the right advice and a free, no obligation quote to have the AquaMAX G390SS gas storage hot water heater supplied and installed, if it is the right fit for your property.

Regardless of what metropolitan suburb you live in across Melbourne, Adelaide, Perth, Sydney, Brisbane or Canberra we are guaranteed to have a local plumber available near you. We also guarantee a same day plumber arrival.

Our service is second to none and our prices are extremely competitive.

Why not take advantage of our INTEREST FREE payment plans* on the new installation or replacement of your hot water heater?

Just ask your attending plumber from Jim’s Plumbing for the details on how to apply – all you need is a 10% deposit.

AquaMAX G390SS gas storage hot water heater repairs or servicing

Should you require a repair on your AquaMAX G390SS gas storage hot water heater call Jim’s Plumbing for a fast, reliable and professional service.

In a gas or plumbing emergency, such as no hot water, we strive to be at your location within only an hour* of your call regardless of the time of day or night.

Our emergency plumbers are available 24/7.

In non-emergency plumbing situations we still guarantee a same day, on time, arrival across all metro areas of Adelaide, Melbourne, Perth, Sydney, Brisbane and Canberra.

When you call Jim’s Plumbing you can trust that you won’t be without hot water for long.

To find out more about the AquaMAX G390SS gas storage hot water heater, to receive a free quote for the supply and installation or to arrange a repair or service call your local plumber from Jim’s Plumbing anytime or you can always book your plumber online for an instant call back.

For a plumber in SA, VIC, QLD or WA call us on 1300 133 509.

For a plumber in NSW or the ACT phone your local Jim’s plumbing professional on 131 546.

AquaMAX G390SS Prices

Jim’s Plumbing proudly offer interest free terms* on every new and installed AquaMAX gas hot water heater. All quoted prices include unit, installation and GST cost.

Installation Type


AquaMAX G390SS – 155L


(Replacing existing unit of same brand and same litre capacity requiring no pipework alterations.)

Replacing existing unit in the Roof ceiling/Mains

Replacing existing unit recessed in the wall

(Existing unit partly installed into wall, common for gas units)

Choosing the Correct Hot Water System

Choosing the correct hot water system can be difficult, as there are so many options to choose from; Click on the links to find out more about these systems.




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Simply book a plumber online now by clicking this link, or phone 1300 133 509 to book now.

Please be advised that we may have additional Aquamax Hot Water System models available.

For a full breakdown of all AquaMAX hot water system prices, including Gas, Electric and Solar water heaters, please click here.

Simply book a plumber online now, or phone 1300 133 509 to book now.

All pricing includes installation and GST.

*NO INTEREST EVER!* PAYMENT PLAN, “Fees, terms and conditions apply”.

No Interest Ever!* Payment Plan offered through Certegy Ezi-Pay Express. No Interest Ever on your hot water heater replacement or new supply and installation, gas service, water service or drain replacement. Conditions apply.

Information on this page is subject to change. Commercial hot water systems also available on enquiry.

*Conditions apply.