Rinnai Hotflo Gas Storage Hot Water System

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About Rinnai Hotflo Gas Storage

The Hotflo gas storage hot water heaters from Rinnai will deliver you with mains pressure hot water.

Providing you with the maximum flow of hot water available, with no temperature fluctuations or flow restrictions when running multiple taps at once.

Rinnai Infinity Continuous Flow Gas hot water system

Rinnai offers two choices of gas storage hot water systems in their Hotflo range.

Rinnai Hotflo gas storage 135 litres hot water system

Rinnai Hotflo gas storage – 135 litres

The Rinnai 135 litre capacity Hotflo gas storage system has the ability to deliver up to 209 litres of hot water within the first hour; making it suitable for a home with between 1 to 4 residents.

Hot water is provided no matter how many taps you are running simultaneously, with no loss of water pressure.

The Hotflo 135 features a storage tank for external installation only, with an energy star rating of 4.7.

The steel tank is lined with vitreous enamel to assist with durability and reliability and the inbuilt anode protection extends the tank life.

Available to operate on natural gas, thermostatically controlled, with a safety temperature shut off valve and 8 years warranty on the cylinder you can rest easy knowing that the Rinnai Hotflo 135 litre gas storage hot water heater will adequately meet your hot water heating requirements.

Rinnai Hotflo gas storage – 170 litres

Designed for external installation, with a 4 star energy rating, the Rinnai Hotflo 170 litre will meet the hot water needs of a home with between 3-5 people.

Delivering up to 257 litres of hot water in the first hour the Hotflo 170 gas storage will allow for multiple showers in a row without risking the water turning cold.

Available to operate on natural gas only, with a 45°C temperature rise, the Hotflo 170 is a durable and efficient storage hot water system with 8 years warranty on the cylinder.

The steel tank is lined with vitreous enamel and features an inbuilt anode to ensure long life from the unit.

For added peace of mind you can trust the pressure temperature relief valve and safety temperature shut off features.

Rinnai Hotflo gas storage 170 litres hot water system

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 rinnai hot water heater is leaking, or you have no hot water, we can often have a plumber to you within the hour*.

Which Rinnai Hotflo gas storage heater is right for me?

When it comes to your hot water heating requirements you want to choose the right system for your property and lifestyle from the start. The last thing that you should do is just choose a hot water heater because it is the cheapest priced.

Opting for the cheapest system may cost you a lot more in the long run due to your hot water heater not being able to keep up with your demands.

A hot water system that is too small for your property will provide you with more cold showers than hot and a system that is too large may cost you unnecessarily on your energy bills.

If you’re considering a Rinnai Hotflo gas storage hot water heater but you are not sure which size is right for your home then call the hot water experts from Jim’s Plumbing.

We will come to you to go through your hot water requirements along with the layout of your home to provide you with professional advice as well as a no obligation, competitive, quote for the supply and installation of your ideal Rinnai Hotflo gas storage hot water heater.

At Jim’s Plumbing we care for our customers and believe in preventative maintenance techniques. We want you to have the perfect hot water heater that still aligns with your budget.

We also proudly offer no interest EVER payment plans* on the Rinnai Hotflo gas storage supply and installation should you require it – when you choose Jim’s Plumbing you are choosing endless hot water at an affordable price.

Call us today on 1300 133 509.

We have a plumber local to your area covering all metropolitan suburbs of Adelaide, Melbourne, Perth, Brisbane, Sydney and Canberra.

For any hot water heater repairs we have a fully qualified plumber available 24/7, including all public holidays, with normal rates until 7.30pm on weekdays.

In a plumbing emergency we can be pulling into your driveway within an hour* of your call.

See the specifications of the Rinnai Hotflo gas storage range below;


Hotflo 135 Litre Gas Storage

Hotflo 170 Litre Gas Storage

Unit Height



Unit Weight

68kg (empty)

83kg (empty)

Fuel Type

Natural Gas

Natural Gas

Water Capacity

209 litres in the first hour

257 litres in the first hour

Gas Consumption

17 Mj/h

20.5 Mj/h

Maximum Water Supply (kPa)

800 without ECV / 680 with ECV

800 without ECV / 680 with ECV


135 Litres

170 Litres

Expansion Control Valve Setting

850 kPa – if required

850 kPa – if required


500 kPa – if required

500 kPa – if required

Water Connection

¾ RP 20mm

¾ RP 20mm

Relief Valve Setting

1000 kPa

1000 kPa

Hot Water Outlet Height



Cold Water Inlet Height



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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Gas boosted solar

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

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.