Ginkgo G30 Continuous Flow Gas Water Heater
30 litres a minute. Endless hot water for large Australian homes.
Hot water that solves the problems you actually have
The G30 is built for homes with three or more bathrooms, large family households, and guests who stay often. It is also a genuine light-commercial unit, suitable to factories, small offices, clubs and rental properties where hot water demand is shared across many people.
Everyone showers at once
With three or more bathrooms, 30 L/min keeps every shower, the kitchen tap and the laundry running at the same time. No more cold showers, no more apologising for the queue.
A gas bill you can predict
A 6-star rating means less gas for the same litres of hot water. The 235 MJ/hr burner is microcomputer-modulated, so it holds a steady 50°C or 60°C without overshooting and wasting fuel.
A heat exchanger that outlasts the mortgage
The heavy-duty oxygen-free copper heat exchanger is highly conductive and corrosion resistant — and it is warranted for 10 years, not 2.
Built for an Australian winter
Integrated anti-freeze heating modules protect internal pipework when temperatures drop. The IPX4 weatherproof casing is designed for permanent outdoor wall mounting.
A cleaner swap for an old unit
Standard 3/4-inch threaded gas, cold and hot connections and a 22.0 kg wall-mount format mean most replacements are a same-day install, not a kitchen renovation.
Heat that arrives the second you turn it on
No tank, no wait, no pilot light burning all day. The burner fires the instant flow is detected and shuts off the moment you stop.
Everything the G30 delivers
Every feature below is a genuine engineering decision — and every one of them exists to make hot water more reliable, more efficient or easier to live with.
- 30 L/min at a 25°C temperature rise
- 6-star gas energy efficiency
- 235 MJ/hr gas input rating
- Oxygen-free copper heat exchanger
- 10-year heat exchanger warranty
- IPX4 weatherproof outdoor casing
- 50°C or 60°C pre-set temperatures
- 2.0 L/min low-flow ignition
- Integrated anti-freeze protection
- Microcomputer burner modulation
- Flame failure & over-temp cut-off
- Automatic pressure relief valve
From cold tap to hot water in seconds
No tank, no standby heat loss, no waiting. Here is exactly what happens the moment you turn on the hot tap.
You open a tap
A precision flow sensor in the unit detects incoming water — even at a trickle of 2.0 L/min.
The burner ignites
The microcomputer-controlled gas proportional valve meters gas precisely, delivering a steady flame matched to the flow rate.
Heat transfers to the water
Hot gas transfers energy through the oxygen-free copper heat exchanger into the incoming cold water.
You get clean hot water, on demand
Microcomputer monitoring holds the outlet temperature steady. Close the tap and the burner shuts off instantly — there is no stored hot water sitting there losing energy.
Full G30 specifications
Complete manufacturer specification data, provided so you and your installer can compare apples to apples.
| Hot Water Production Rate (at 25°C temp rise) | 30 Litres / Minute |
| Gas Type Compatibility | LPG / Natural Gas (NG) |
| Gas Input Rating | 235 MJ/hr |
| Star Energy Rating | 6 Stars (Ultra-High Efficiency) |
| Pre-set Temperature Options | 50°C / 60°C |
| Water Supply Pressure (Min / Max) | 1000 kPa |
| Start-Up Minimum Water Flow | 2.0 Litres / Minute |
| Power Supply Requirements | 240V ~ 50Hz Standard Outlet |
| Ingress Protection (IP) Rating | IPX4 Weatherproof Casing |
| Connection Fittings Size (Gas, Cold & Hot) | 3/4" (20mm) Threaded Connections |
| Unit Weight | 22.0 kg |
| Physical Dimensions (H × W × D) | 566 mm × 373 mm × 240 mm |
| Heat Exchanger Warranty | 10 Years Limited Warranty |
What to expect on installation day
Good preparation makes for a clean, fast install. Here is what the G30 needs from your property.
Wall mount, outdoors
IPX4 weatherproof casing is designed for permanent external installation on an outside wall, ideally with a roof or overhang above the unit.
Standard 3/4-inch connections
Gas, cold water and hot water connections are all 3/4-inch (20mm) threaded — the standard Australian size, so existing pipework usually connects straight up.
Up to 1000 kPa mains pressure
Suitable for normal Australian mains water pressure. A pressure limiting valve is recommended where local pressure exceeds 1000 kPa.
240V power required
The unit needs a standard 240V – 50Hz outlet for the electronic controls and fan. Your installer will confirm the closest suitable outlet.
Common questions about the G30
Everything Australian buyers and installers ask us most often about the G30.
How much hot water does the G30 actually provide?
The G30 is rated at 30 litres per minute with a 25°C temperature rise. That is the Australian standard test condition, which assumes incoming water at 25°C. In a cold-climate winter your incoming water is colder, so the same gas input delivers a lower flow at the same outlet temperature. Your installer will size the unit against your household pattern and local inlet water temperature.
Is the G30 suitable for a house with three or four bathrooms?
Yes — that is exactly what it is designed for. As a rule of thumb a single shower and a kitchen tap together draw roughly 20 L/min, so 30 L/min comfortably supports two showers running at once, or three showers used back to back, with headroom for the laundry.
Does the G30 run on both natural gas and LPG?
Yes. The G30 is factory set for either LPG or natural gas, and your licensed gas fitter will confirm the correct gas type for your property before commissioning. If you change gas supply type later, the unit requires conversion by an approved installer.
How long does installation take?
For a straightforward replacement of an existing unit with 3/4-inch connections already in place, most licensed gas fitters complete the swap in a few hours. New installations including a gas supply upgrade or a new hot water line will take longer.
What does the 10-year heat exchanger warranty cover?
The 10-year limited warranty covers the heat exchanger — the single most expensive component in the unit and the part that fails most often in storage systems. It is a component warranty, so labour and call-out fees are separate, which is why keeping your installation and service details is worthwhile.
Is the unit safe to leave outdoors in freezing conditions?
Yes. Integrated anti-freeze heating modules protect the internal pipework from frost damage. As with any outdoor water heater, correct installation and commissioning by a licensed gas fitter is essential for the protection to work as designed.
Does the G30 work with a solar pre-heat system?
The G30 can be installed in a solar pre-heat configuration, where a solar collector feeds pre-heated water into the unit. Your installer will confirm pipework routing and the required tempering valve arrangement for your specific system.
How does a continuous flow unit compare with a storage tank?
A storage tank keeps a large volume of hot water standing ready — which means energy is lost every single day keeping it hot, and you can still run out. A continuous flow unit heats water only when you use it, so there is no standby loss, no cold run-out, and a smaller physical footprint because there is no tank to install.
Ginkgo G30 Product Manual (PDF)
Complete manufacturer documentation — technical specifications, dimensions, certifications and operating guidance. Opens as a PDF in a new tab.
Ready for hot water that just works?
Tell us about your property and hot water habits, and we will match you with the right G30 and a licensed installer in your area. No obligation, no pressure.
Other Ginkgo hot water systems
Not sure which size fits your household? Compare the rest of the range below.
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Ginkgo G22 Continuous Flow Gas Water Heater
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Ginkgo All-in-One Heat Pump Water Heater
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Precision hot water systems engineered for Australian conditions. Uncompromising safety, efficiency, and trade-trusted reliability.
About Ginkgo Australia
Since our founding, Ginkgo Australia has been driven by a singular mission: to provide the most reliable, safe, and efficient hot water systems for the harsh and varied Australian climate.
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