Gas Instantaneous Hot Water Systems

Professional Installation • System Replacement • Repairs & Servicing

Gas instantaneous hot water systems provide a modern, efficient alternative to traditional storage hot water tanks. Unlike storage systems, these units heat water only when it’s needed, delivering a continuous supply of mains-pressure hot water directly to your taps and showers.

Homes with high hot water demand, multiple bathrooms, or busy families benefit from the convenience and efficiency of on-demand systems. They eliminate the risk of running out of hot water and reduce energy consumption compared to conventional storage tanks.

What Is a Gas Instantaneous Hot Water System?

A gas instantaneous (or continuous flow) hot water system heats water as it flows through the unit, instead of storing hot water in a tank. When a tap is opened, cold water passes through a gas burner that heats it instantly, providing hot water at a constant temperature.

This technology is ideal for homes with fluctuating water usage patterns, as it ensures that hot water is always available when needed, without the delay or energy waste associated with storage tanks.

Benefits of Gas Instantaneous Hot Water Systems

On-Demand Hot Water
Unlike traditional tanks, these systems heat water as it flows. You’ll never run out of hot water, even with multiple taps or showers running simultaneously.

Energy Efficiency
Water is only heated when needed, reducing gas consumption and lowering running costs. Modern systems are designed with low-emission burners and energy-saving technology to minimise environmental impact.

Space-Saving Design
Gas instantaneous systems are compact, often wall-mounted, and ideal for homes with limited indoor or outdoor space. They can replace old storage tanks without requiring major modifications.

Consistent Water Temperature
Advanced temperature controls provide safe and reliable hot water at every tap, preventing scalding and offering precise regulation for comfort.

Durable Construction
These systems are designed for long-term use in Australian homes, with corrosion-resistant materials and components built to withstand daily household demands.

Flexible Installation Options
Gas instantaneous units can be installed indoors or outdoors, with options suitable for natural gas or LP gas connections. Proper venting and flueing ensure safety and optimal performance.

Installation of Gas Instantaneous Systems

Installing a gas instantaneous hot water system requires expertise to ensure safety, efficiency, and long-term reliability. Licensed technicians will assess:

✔ Household hot water demand
✔ Water flow rate and pressure
✔ Gas type and connection requirements
✔ Available mounting space for the unit
✔ Venting and flue requirements

Installation typically includes:

• Removal of existing hot water systems (if required)
• Gas and water connection compliance
• Pressure and temperature testing
• Professional mounting and alignment
• Registration of warranty and support documentation

Proper installation ensures consistent performance, energy efficiency, and compliance with safety standards.

Replacement & System Upgrades

If your existing hot water system is old, inefficient, or unable to meet household demand, upgrading to a gas instantaneous system can improve hot water supply, reduce energy usage, and lower running costs.

Signs it may be time for an upgrade include:

• Inconsistent water temperature
• Hot water running out quickly
• Rising gas bills
• Frequent repairs or leaks
• Systems older than 10–12 years

Upgrading to a modern on-demand system delivers reliable hot water, compact installation, and energy-efficient operation for long-term home comfort.

Servicing & Maintenance

While durable, gas instantaneous systems require periodic servicing to maintain optimal performance. Regular checks include:

• Burner inspection and cleaning
• Temperature and flow rate calibration
• Gas connection and valve inspection
• Flue and vent checks
• Component testing for long-term reliability

Routine maintenance reduces the risk of system failures, ensures safe operation, and prolongs the lifespan of your system.

Accessories & Controllers

Many on-demand systems can be paired with water controllers or remote control units. These allow:

• Pre-setting the desired water temperature
• Switching on water instantly from a tap
• Avoiding manual mixing of hot and cold water
• Improving convenience and energy efficiency

Additional installation accessories, such as flue kits or mounting hardware, help simplify installation and enhance aesthetics.

Upgrade to Gas Instantaneous Hot Water

Switching to a gas instantaneous hot water system provides modern, energy-efficient hot water with:

• Continuous mains-pressure hot water
• Reduced energy consumption
• Compact installation for space-saving
• Safe and consistent temperatures
• Reliable performance for daily household needs

Professional installation, replacement, and servicing ensure your home receives the full benefits of a modern gas instantaneous hot water solution.

Contact Coop Group today to discuss upgrading to an efficient, reliable gas instantaneous hot water system.