Our Exclusive & Honest AquaMAX Hot Water System Review

When it comes to hot water, what you want is pretty simple – something reliable, something energy-efficient, something affordable, something that’s perfect for Australian homes, lifestyles and conditions. And we’ve said it before and we’ll happily say it again – it’s hard to go past AquaMAX.

We’ve been asked more than once to write down exactly what we love about this Rheem-owned brand, and why we so often recommend it to customers across Melbourne, Geelong, Canberra, and beyond. From build quality and warranty coverage to practical performance, AquaMAX delivers real value – and we see that firsthand, every day.

So – we’ve really put our minds to work and come up with 8 reasons why we urge you to consider an AquaMAX:

1. Because the brand actually delivers on its promise

What is an AquaMAX hot water system? Well, AquaMAX has been manufacturing hot water systems in Australia since 1988. Owned by Rheem, this hot water brand is well known for its efficient gas storage models and sturdy electric units. Both types are built for Aussie conditions and backed by strong warranties. Whether you’re replacing an ageing tank or planning a new install, there’s almost always an AquaMAX hot water option to suit.

AquaMAX gas models are all 5-star rated for efficiency and use stainless steel cylinders that resist corrosion and require no sacrificial anode. The electric range uses vitreous enamel-lined tanks and is available in a wide variety of sizes – ideal for both metro and regional homes.

2. Because the AquaMAX 390 is an absolute standout

One of the most popular units we install for larger households is the AquaMAX 390. It’s a natural gas storage system with a massive first-hour delivery of 390 litres and recovery rates of up to 185 litres per hour. This makes it perfect for homes with two or more bathrooms or high hot water demand. The 390 is fast, reliable, and comes with a full 12-year cylinder warranty when installed by a licensed professional.

The AquaMAX G390SS (the full model number) is also one of the lightest in its class, thanks to its stainless steel construction. This makes it easier to install in tight spaces or elevated locations. Its energy rating helps reduce gas bills, and it handles daily use with minimal fuss.

3. Because not every household needs the biggest tank

Not every household needs a system as large as the G390SS. That’s where the AquaMAX 340 comes in. It shares the same 5-star rating, stainless steel build and warranty terms, but has a lower first-hour delivery. It’s ideal for smaller families or homes with only one bathroom. For those with more modest needs or tighter outdoor space, the G270SS offers similar reliability with a reduced storage volume.

These three systems form the core of the AquaMAX gas hot water system range and are all designed for outdoor installation only. Each is made to comply with Australian standards and operates safely on natural gas.

4. Because the AquaMAX electric hot water range is just as strong

If gas isn’t an option, AquaMAX still has you covered. Their electric storage tanks are known for performance and durability. The range includes units from 50 litres up to a massive 400 litres, with popular models like the AquaMAX 315 and AquaMAX 200 commonly installed in family homes and investment properties.

The tanks are internally lined with vitreous enamel – essentially baked glass – to resist corrosion, and they operate at mains pressure. These models are often used in like-for-like replacements, especially when upgrading from older electric systems.

For those in regional areas with hard or mineral-heavy water, AquaMAX’s electric units are also built to cope – another reason we recommend them.

5. Because even AquaMAX hot water problems are easy to fix

Like any product, AquaMAX systems can occasionally run into issues. One of the more common service calls we receive involves the AquaMAX 390 pilot light. If it keeps going out or won’t relight, the problem may be due to a faulty thermocouple, a dirty pilot nozzle, or a worn gas valve. These are routine fixes for our team and can usually be resolved on the spot.

AquaMAX hot water troubleshooting also covers issues like slow recovery, inconsistent temperature, or water not staying hot for long. These can stem from age, sediment build-up in the tank, or thermostat problems. Here at Fix-It Right Plumbing, our plumbers near you carry the tools and parts to test and resolve these faults without guesswork.

6. Because it offers serious value for money

Customers often ask us about the AquaMAX hot water system price, especially when comparing against other brands. The truth is that AquaMAX sits right in the sweet spot – not the cheapest, but far from the most expensive – and the quality more than justifies the cost.

Just remember, the installation costs can vary a bit depending on the site, access, and whether upgrades to gas supply or valves are needed. Electric units, such as the 315 or 200-litre models, usually come in a bit lower anyway – especially when replacing an existing like-for-like system.

Considering the high recovery rates, long warranty terms, and low servicing needs, we believe AquaMAX delivers excellent value.

7. Because of the AquaMAX warranties and service support

One of the standout benefits of choosing an AquaMAX water heater is the warranty. Gas models with stainless steel tanks carry a full 12-year cylinder warranty, while electric models usually come with either a 5- or 10-year warranty depending on size and specification.

In addition, AquaMAX systems are supported by Rheem’s national service network, making parts and technical support easy to access if ever needed. Fix-It Right Plumbing is fully licensed to handle your AquaMAX hot water service, from warranty inspections and repairs to full installations.

8. Because it’s the right choice for almost every home

If you’re asking whether an AquaMAX is a good choice for your home, our answer is almost always yes. The brand is trusted, Australian-made, Rheem-owned, and widely supported. It offers energy efficiency, long service life, and a broad product range that suits everything from small apartments to large family homes.

The G390SS is among our number 1 picks for larger households, while the 340 and 315 litre models offer excellent performance for more average demand. With multiple size options, both gas and electric, AquaMAX is a brand that rarely disappoints.

Fix-It Right Plumbing’s final verdict

We’ve worked – and still do – with just about every brand on the market. And we keep coming back to AquaMAX. Whether it’s a new install, a fast replacement, or a tricky service call, their systems are easy to work on, built to last, and well-supported. It’s why we recommend AquaMAX hot water systems to so many of our customers.

If you’re looking for Melbourne hot water installation, Geelong hot water replacement, or Canberra hot water repair of AquaMAX systems, our expert team is ready to help. Call Fix-It Right Plumbing today or book online — and get your hot water fixed right, the first time.