🏷️ Brand – Aquamax
🔢 Model Number – G340SS
📦 Volume – 160L
📏 Width – 520mm
📐 Height – 1635mm
🌍 Manufactured In – Australia
🛠️ Cylinder / Heat Exchange Material – Stainless Steel
🛡️ Cylinder / Heat-Exchange Warranty – 10 Years
🔇 Noise Level – NA dBa
⚖️ Dry Weight – 65kg
⚡ Energy Source – Natural Gas
📡 WiFi Controller Built-in or Compatible – No
⏲️ Built-In Timer – No
💡 LED/LCD Status Indicator – No
📊 Coefficient of Performance (COP) –

Aquamax G340SS 160L Gas Hot Water System: Aquamax 340 Price

Reliable, Energy-Efficient Hot Water for Medium to Large Households

Looking for a high-performance gas hot water system that delivers instant, reliable hot water? The Aquamax G340SS 160L Gas Storage Hot Water System is an aquamax hot water system designed for medium to large households (2-5 people), ensuring consistent water pressure, energy efficiency, and durability.

With a 5-star energy rating, stainless steel tank, and fast recovery rate of 185L/hr, this system is an eco-friendly and cost-effective solution for those needing uninterrupted hot water. 🏆 JR Gas & Water – Voted Best Plumbers & Best Home Care Store (2023, 2024, 2025)! 🔗 Get a Quote or Book Your Installation Here

Overview of the Aquamax G340SS

The Aquamax G340SS is a high-performance gas hot water system designed to meet the needs of single-family dwellings. This robust water heater features a stainless steel construction, ensuring long-term durability and resistance to corrosion. With a remarkable 340-litre first hour delivery capacity, it is perfectly suited for larger households that require a consistent and ample supply of hot water. The system boasts a 5-star energy rating, making it an energy-efficient choice that helps reduce energy bills. Additionally, the Aquamax G340SS comes with a 12-year cylinder warranty, providing peace of mind and long-term reliability. Its external installation design not only saves indoor space but also ensures easy access for maintenance and installation.

Key Features & Benefits:

✔ 5-Star Energy Efficiency – Lower running costs & eco-friendly operation

✔ Stainless Steel Cylinder – Built for corrosion resistance & long-term durability

✔ High Recovery Rate (185L/hr at 45°C) – Ensures a steady supply of hot water

✔ Compact & Space-Saving Design – Ideal for external installations

✔ Advanced Safety Features – Includes pressure & temperature relief valve

✔ Natural Gas Operation (40 MJ/h Consumption) – Reliable & cost-efficient heating

✔ 12-Year Cylinder Warranty – Peace of mind with long-term protection

✔ External Installation – Designed for outdoor placement to save indoor space

✔ High-Quality Construction – Ensures reliability and customer satisfaction with high standards

Specifications:

• Brand: Aquamax

• Model: G340SS

• Capacity: 160L

• Energy Rating: 5-Star

• Gas Type: Natural Gas

• Gas Consumption: 40 MJ/h

• Recovery Rate: 185L/hr (45°C rise)

• Installation: External Only

• Cylinder Material: Stainless Steel

• Pressure & Temperature Relief Valve: 1400 kPa / 99°C

• Water Supply Pressure (Max.): 1120 kPa

• Warranty: 12 Years on Cylinder

Performance & Energy Efficiency

The Aquamax G340SS is engineered for high efficiency, ensuring fast recovery times and minimal energy waste. Operating on natural gas, this system is an ideal choice for homeowners looking to lower their energy bills while enjoying a continuous hot water supply.

With a 5-star AGA rating, the stainless steel cylinder allows for superior heat retention, reducing overall gas consumption. This means lower running costs without compromising on performance. In the long run, investing in the Aquamax G340SS leads to significant cost efficiency and fewer maintenance issues, making it a durable and financially smart choice.

Safety & Compliance

✔ Pressure & Temperature Relief Valve – Prevents overheating & excessive pressure buildup
✔ Watermark Licence No. WMKA00200 – Certified for Australian standards
✔ AGA Approval No. AGA 6114 G – Industry-compliant safety assurance

With these safety features, the Aquamax G340SS ensures secure, reliable operation for years to come.

How the Aquamax G340SS Compares to Other Hot Water Systems

When it comes to hot water systems, the Aquamax G340SS stands out for its exceptional energy efficiency and durability. Its stainless steel construction and 5-star energy rating make it a highly efficient and cost-effective option for households. Compared to other gas hot water systems, the Aquamax G340SS offers a longer warranty period and a higher first hour delivery capacity, making it a superior choice for households with high hot water demands. Additionally, its competitive pricing and external installation design make it an attractive option for those seeking a reliable and efficient hot water solution. The Aquamax G340SS not only meets but exceeds the expectations of Australian households, making it a market leader in the hot water system industry.

Installation & Maintenance

The Aquamax G340SS is designed for easy external installation, making it ideal for homes with limited space. It features:

🔹 Accessible Water & Gas Connections – Easy setup with Rp ¾” (20mm) Female inlet & Rp ½” (15mm) Female outlet🔹 ½” Flared Compression Gas Connection – Ensures reliable & leak-free operation 🔹 Stainless Steel Tank – Reduces the need for frequent maintenance & extends lifespan

For those looking to install or service an Aquamax hot water system, our team provides comprehensive solutions to ensure optimal performance and longevity.

🔗 Book Your Installation with JR Gas & Water Now

Warranty and Support

The Aquamax G340SS comes with a comprehensive warranty and support package that ensures long-term satisfaction and peace of mind. The stainless steel cylinder is backed by a 12-year warranty, reflecting the manufacturer’s confidence in its durability and performance. Additionally, the entire machine is covered by a 1-year parts-and-labour warranty, providing protection against any manufacturing defects. The gas burner is warranted for 5 years, and the electrical components come with a 2-year warranty. To further enhance customer experience, the manufacturer offers dedicated customer support and a network of authorized service providers, ensuring prompt and efficient service whenever needed.

Why Choose JR Gas & Water?

🏆 Award-Winning Service – Voted Best Plumbers & Best Home Care Store (2023, 2024, 2025)
💡 Expert Installation – Installed by licensed professionals for seamless setup
💲 Flexible Payment Options – HUMM, ZipPay, Openpay & Afterpay available
🌱 Energy-Saving Solutions – Advice on reducing energy costs & maximizing efficiency
🔧 Reliable Local Business – Serving Brisbane & Gold Coast with trusted gas hot water solutions

Upgrade to the Aquamax G340SS Today!

Enjoy high-efficiency, reliable hot water with JR Gas & Water’s expert installation.

💦 Click here to book your installation or request a quote!

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Ex: Shipping and return policies, size guides, and other common questions.

Gas Storage Hot Water System Package Selection Guide

(Please rotate mobile device to landscape for easy viewing)

Choosing the right gas storage hot water system package depends on your installation needs, household size, and whether additional electrical work is required. Use this guide to compare package levels and find the best fit for your home.

Selecting the right package helps streamline installation, but we understand that needs may change, and that the purchaser isn’t a plumber. We’re flexible and can make adjustments, such as upgrading to the next package as needed.

💡 Which Package is Right for You?

IMPORTANT - All online packages are for external installations only, for internal installations please complete our quote request form.

✅ Base – For compliant replacements
Ideal for identical direct swaps where the existing system meets compliance. No extra plumbing, electrical work or disposal required or included.

(EXAMPLE - A Rheem 4-Star 135L replacing complaint Rheem 4-Star 135L not a Rheem 4-Star 170L)

✅ Silver – For minor upgrades
Includes pipework alterations and a valve kit but does not include gas modifications or system disposal. Designed for those swapping a similar system and working to a tight budget. 

(EXAMPLE - Swapping a 10year old Rheem Stellar 360 with a new Rheem Stellar 330 where the existing installation is good but requires pipework alterations to adapt the new unit and new valve set for warranty)

🏆 Gold (Best Seller) – For standard installations
Covers old system removal and plumbing modifications, making it the most common choice for standard installations.

(EXAMPLE - Swapping a 20year old Dux 4-Star 135L with a new Vulcan 4-Star 170L, Strip all down and redo the valves, pipework, drain lines, support base and dispose of the old unit)

💰 Sapphire (Best Value) – For installations requiring a new gas main or upgrade plus everything in the gold package

(EXAMPLE - Swapping an electric system with a new Everhot 4-Star 135L that requires a new gas line and connection to be installed, then strip all down and redo the valves, pipework, drain lines, support base and dispose of the old unit)

✅ Platinum – The ultimate package
Includes everything – system relocation, extensive plumbing and gas upgrades.

(EXAMPLE - Replacing any existing system of any type then relocating it to a new position on the house that requires the gas lines/plumbing to be installed or relocated to the new installation position)

🏆 Package Comparison Guide

Whenever a product is required, we only source from trusted, warranty‑backed manufacturers:

• Valves – AVG, RMC, Rye Metal (and subsidiaries)
• Copper – Type B Kembla or Crane
• PEX Systems - Ezipex
• Insulation – eFlex or K‑Flex
• Electrical switches & timers – Hager
• Conduit – Medium Duty PVC Vinidex or GTS
• Brassware – Brasshards
• Hydraulic crimp fittings – EziPress, Viega, Kembla
• Sealants – Loxeal

Feel free to let us know if you have any other preferred brands!

IMPORTANT - All online packages are for external installations only, for internal installations please complete our quote request form.

🛠 Need Help Choosing?

Not sure which package is right for you? Contact JR Gas & Water, and we’ll help you select the best solution for your home!

Gas storage hot water systems provide reliable, fast recovery hot water and are designed to deliver many years of dependable service. Like any gas appliance, they require regular maintenance to ensure safe operation, maximise efficiency and support your manufacturer's warranty.

Routine servicing helps identify worn components before they result in costly repairs or unexpected loss of hot water.

Homeowner Maintenance – Every 6 Months

Every six months we recommend carrying out a simple visual inspection of your hot water system.

Homeowners should:

• Carefully operate the Pressure & Temperature Relief (PTR) Valve.
• Operate the Expansion Control Valve (ECV) (where fitted).
• Check for water leaks around the system.
• Ensure the flue terminal is free from obstructions (where applicable).
• Keep the area around the appliance clear of leaves, debris and combustible materials.
• Inspect for signs of corrosion or rust.
• Listen for any unusual noises during operation.

Why is this important?

Regular operation of the PTR and ECV valves helps prevent mineral build-up that can cause the valves to seize or leak.

Keeping the flue clear allows combustion gases to vent safely and helps the burner operate efficiently.

Important: Always follow your manufacturer's instructions when operating safety valves, as hot water will discharge during testing. If you're unsure or unable to perform this maintenance safely, contact a licensed plumber.

JR 6-Month Gas Storage Health Check

Recommended Service – $99

A professional inspection helps ensure your gas hot water system is operating safely and efficiently while identifying potential issues before they become major repairs.

Our technician will:

• Inspect the complete hot water system.
• Check for leaks or corrosion.
• Test the PTR valve.
• Test the ECV (where fitted).
• Inspect burner operation.
• Check pilot flame or ignition system.
• Inspect the gas control valve.
• Check gas connections for leaks.
• Inspect the flue for safe operation (where applicable).
• Confirm correct burner performance.
• Check thermostat operation.
• Inspect surrounding pipework and fittings.
• Identify components showing signs of wear.

Service Price: $99

Routine inspections can improve reliability, maintain efficiency and reduce the likelihood of unexpected breakdowns.

Recommended 5-Year Major Service

Current Price: $449

Most gas storage hot water systems benefit from scheduled replacement of key components to maintain safe and reliable operation.

Our comprehensive 5-Year Service includes:

• Replacement of the sacrificial anode.
• Replacement of the Pressure & Temperature Relief (PTR) Valve.
• Replacement of the Expansion Control Valve (ECV).
• Full inspection of the gas storage system.
• Burner inspection and cleaning (where required).
• Gas leak testing.
• Flue inspection.
• Operational and safety testing.
• Inspection of pipework, valves and fittings.

Why These Components Matter

Sacrificial Anode

Most vitreous enamel-lined gas storage tanks contain a sacrificial anode.

The anode corrodes instead of the steel tank, protecting it from internal rust.

Once the anode is consumed, the tank itself begins to corrode, which can eventually result in leaks and complete tank failure.

Replacing the anode at the recommended interval is one of the most effective ways to extend the life of your hot water system.

Pressure & Temperature Relief (PTR) Valve

The PTR valve is an essential safety device that protects the storage tank from excessive pressure and temperature.

Mineral deposits and normal wear can prevent the valve from operating correctly over time, making routine testing and replacement important.

Expansion Control Valve (ECV)

Where fitted, the ECV controls pressure created as water expands during heating.

Maintaining the ECV helps reduce stress on the storage tank and associated plumbing, contributing to a longer system life.

Burner & Flue

The gas burner provides the heat required to maintain your hot water supply, while the flue safely removes combustion gases from the appliance.

A clean burner and unobstructed flue help ensure:

• Safe operation.
• Efficient gas consumption.
• Reliable ignition.
• Consistent hot water performance.
• Reduced risk of carbon monoxide hazards in flued systems.

If Your Hot Water System Isn't Working

Before arranging a service, check the following:

• Ensure the gas supply is turned on.
• Check whether other gas appliances are operating.
• Confirm the isolation valve is open.
• Check for any obvious water leaks.
• Ensure the pilot light is operating (where fitted).
• Check for any error indicators (electronic ignition models).
• Inspect the flue terminal for obstructions (where applicable).
• Listen for unusual noises during operation.
• Confirm the system has had sufficient time to recover after heavy hot water use.

If your system still isn't producing hot water, contact JR Gas & Water for professional diagnosis and repair.

General Signs Your System May Need Attention

Arrange a service if you notice:

• Insufficient or no hot water.
• Pilot light repeatedly going out.
• Burner failing to ignite.
• Rust-coloured or dirty water.
• Water leaking from the tank.
• Constant dripping from relief valves.
• Visible corrosion.
• Gas odours (leave the area immediately and contact your gas supplier or emergency services if you suspect a gas leak).
• Unusual burner noises.
• Reduced hot water recovery.

Early servicing can often prevent expensive repairs and extend the life of your hot water system.

Protect Your Warranty & Maximise System Life

Regular maintenance helps ensure your gas storage hot water system operates safely, efficiently and reliably.

Following the manufacturer's recommended maintenance schedule may also assist in maintaining warranty coverage.

Failure to maintain your system may result in:

• Premature tank corrosion.
• Worn or leaking safety valves.
• Reduced efficiency and higher gas consumption.
• Burner or ignition problems.
• Unexpected loss of hot water.
• Shortened system lifespan.
• Possible reduction or loss of manufacturer warranty, depending on the manufacturer's maintenance requirements.

Preventative maintenance is a cost-effective way to protect your investment, improve reliability and maximise the service life of your gas storage hot water system.

Please note: Maintenance requirements vary between manufacturers and models. Always refer to your owner's manual for the maintenance schedule applicable to your gas storage hot water system. JR Gas & Water services all major gas storage hot water brands in accordance with manufacturer recommendations where applicable.

ZipPay – 6-Month Interest-Free on All Products

ZipPay allows you to buy now and pay later, offering flexible, interest-free payments for up to 6 months on all JR products. It’s easy to set up, and you can customize your repayment schedule to suit your budget. Payments can be made weekly, fortnightly, or monthly, with a $6 fee if the balance isn’t paid off by the due date​.

Humm – Up to 12 Months Interest-Free

Humm provides interest-free payment plans on purchases up to $30,000, perfect for both small and large buys. For items over $2,000, you can spread payments over 12 months. Humm also offers flexibility in scheduling payments based on when you get paid​

Afterpay – 8 Weeks, No Interest

With Afterpay, spread the cost of purchases across four equal installments, due every two weeks, over an 8-week period. There’s no interest, and as long as payments are made on time, there are no fees. Perfect for purchases between $100 and $1,500​

Plenti Finance – For Reclaim Systems Only

Plenti Finance is available exclusively for Reclaim Energy systems. This option offers tailored repayment terms with competitive interest rates, helping make eco-friendly choices more affordable. For more detailed information on Plenti’s terms and eligibility for Reclaim systems, visit the Reclaim Energy finance page​

If you're in Queensland and considering a new electric hot water system, JR Gas & Water is the company to choose. Here's why:

Experience and Expertise: JR Gas & Water has over 10 years of experience in the gas and plumbing industry. Their team of licensed and insured professionals is highly skilled and knowledgeable about all aspects of electric hot water system installation, maintenance, and repair. They can provide expert advice on the best system for your needs and ensure a smooth installation process.

Quality Products: JR Gas & Water uses only high-quality products from trusted brands to ensure your electric hot water system is reliable and efficient. They also offer a range of options to suit different budgets and requirements.

Competitive Pricing: JR Gas & Water offers competitive pricing for their electric hot water systems, ensuring that you get a great value for your investment. They also provide a detailed quote upfront, so there are no surprises or hidden costs.

Customer Service: JR Gas & Water is committed to providing excellent customer service. They are always available to answer any questions or concerns you may have and are committed to ensuring your satisfaction.

Local Business: JR Gas & Water is a locally owned and operated business in Queensland. By choosing them for your electric hot water installation, you are supporting a local business and contributing to the local economy.

Warranty and Guarantee: JR Gas & Water provides a warranty and guarantee on all their products and services, giving you peace of mind knowing that your system is covered in case of any issues.

Energy Efficiency: Electric hot water systems can be energy efficient, and JR Gas & Water can help you choose the right system for your needs. They can provide advice on energy-saving features and options, such as timers and thermostats, to help you save on your energy bills.

Safety: JR Gas & Water is committed to safety and ensuring that all installations are done to the highest safety standards. They are also familiar with local safety regulations and requirements, ensuring that your electric hot water system is installed safely and in compliance with all relevant codes.

JR Gas & Water is a reliable and experienced choice for your electric hot water system installation in Queensland. With a commitment to quality products, competitive pricing, excellent customer service, and safety, they can help you make the switch to a more efficient and cost-effective solution for your hot water needs. Contact them today to learn more about their services and how they can help you.