Rinnai Hotflo 135L Gas Storage Hot Water System

The Rinnai Hotflo 135L Gas Storage Hot Water System is available online from Hot Water Outlet as a supply-only gas storage water heater with metro delivery available in selected areas Australia wide.

Customers can purchase the Rinnai Hotflo 135L as a supply-only hot water system and request assistance arranging installation quotes after purchase through licensed local installers in selected metro regions.

The Rinnai Hotflo 135L gas storage water heater is a medium-capacity external gas hot water system designed for reliable hot water supply in medium-sized households. With 135L rated capacity, 209L first hour delivery, 4.7 Star energy rating, vitreous enamel lined steel tank, inbuilt anode protection, natural gas and LPG model availability and an 8-year cylinder warranty, it is a practical replacement option for homes already using gas storage hot water.

About the Rinnai Hotflo 135L Gas Storage Water Heater

The Rinnai Hotflo 135L Gas Storage Hot Water System is designed for medium-sized households needing reliable stored hot water with strong, consistent pressure to multiple outlets.

Unlike a continuous flow gas water heater, the Rinnai Hotflo 135L stores hot water in a tank and recovers the water as it is used. This can make it a practical option for customers who prefer a familiar gas storage replacement rather than switching to electric, heat pump or instantaneous gas.

The 135L model is suitable for outdoor installation only and is commonly used to replace existing external gas storage hot water systems where the location, gas supply, plumbing, valves and water pressure are suitable.

Buy Rinnai Hotflo 135L Supply Only

Order the Rinnai Hotflo 135L Gas Storage Hot Water System online from Hot Water Outlet with metro delivery available in selected areas across Australia.

This option is ideal if you already have a licensed gas fitter or plumber arranged and only need the unit supplied.

The supply-only product price includes the hot water system itself.

Installation, old system removal, disposal, valve kits, gas fitting work, plumbing alterations, compliance upgrades and additional site requirements are not included unless separately quoted.

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Installation Quotes Available After Purchase

Hot Water Outlet does not directly provide installation services.

After purchasing the Rinnai Hotflo 135L Gas Storage Hot Water System, customers in selected metro areas may request assistance arranging installation quotes through licensed local plumbers and gas fitters.

Installation quote availability depends on:

• service location

• installer availability

• existing system type

• gas type suitability

• outdoor installation suitability

• plumbing suitability

• gas connection suitability

• access requirements

• compliance requirements

Additional installation costs may apply for:

• valve upgrades

• gas fitting work

• plumbing changes

• pipework alterations

• difficult access

• base preparation

• old system removal

• disposal

• compliance upgrades

Rinnai Hotflo 135L Delivery Brisbane

Hot Water Outlet offers metro delivery for the Rinnai Hotflo 135L Gas Storage Hot Water System in selected Brisbane areas.

Customers can order online and request assistance arranging installation quotes after purchase where available.

Rinnai Hotflo 135L Delivery Gold Coast

Hot Water Outlet offers metro delivery for the Rinnai Hotflo 135L Gas Storage Hot Water System in selected Gold Coast service areas.

Customers can purchase online and organise installation separately or request help arranging installation quotes after purchase.

Rinnai Hotflo 135L Delivery Sydney

Hot Water Outlet offers metro delivery for the Rinnai Hotflo 135L Gas Storage Hot Water System in selected Sydney metro areas.

Customers can order online with installation quote assistance available after purchase in selected locations.

Rinnai Hotflo 135L Delivery Melbourne

Hot Water Outlet offers metro delivery for the Rinnai Hotflo 135L Gas Storage Hot Water System in selected Melbourne metro areas.

Customers can purchase the system online and request help arranging installation quotes after delivery.

Is the Rinnai Hotflo 135L Right for Your Home?

The Rinnai Hotflo 135L Gas Storage Hot Water System may be suitable if you are replacing an existing outdoor gas storage water heater and want a reliable medium-capacity system from a recognised hot water brand.

It is commonly suited to medium-sized households, townhouses, rental properties and homes already using natural gas or LPG storage hot water.

Rinnai lists the Hotflo 135L as ideal for up to 5 people in warm climates and up to 4 people in cool climates, depending on usage. Real-world suitability depends on shower length, outlet demand, household habits, gas type, water pressure, installation location and climate.

This system may suit you if:

• you are replacing an existing outdoor gas storage hot water system

• your property uses natural gas or LPG

• you want a 135L gas storage water heater

• you want up to 209L first hour delivery

• you want strong, consistent pressure to multiple outlets

• you want a 4.7 Star gas storage system

• your current location suits an outdoor gas storage replacement

• your gas supply, water pressure and access are suitable

• you prefer supply-only purchase flexibility

Extra work may be required if:

• the system is being moved to a new location

• the selected gas type does not match the property

• existing valves are old, missing or non-compliant

• the gas connection needs alteration

• extra pipework or plumbing changes are needed

• water pressure is outside the required range

• access is restricted

• the existing base or support area is unsuitable

• the old system needs additional removal or disposal work

• the installation location does not meet outdoor clearance requirements

Key Features of the Rinnai Hotflo 135L

• 135L gas storage hot water system

• Product codes GHF4135N and GHF4135L

• Suitable for medium-sized households

• Ideal for up to 5 people in warm climates depending on usage

• Ideal for up to 4 people in cool climates depending on usage

• 209L first hour delivery capacity

• 135L rated storage capacity

• 4.7 Star energy rating

• Vitreous enamel lined steel tank

• Inbuilt anode protection to help extend tank life

• Strong, consistent pressure to multiple outlets

• Pressure temperature relief valve included

• External use only

• Natural gas and LPG models available

• Thermostatically controlled operation

• Automatic safety temperature shut-off

• 17 MJ/hr gas consumption

• Rp 3/4 water connections

• 1000 kPa relief valve setting

• 850 kPa expansion control setting where required

• 500 kPa recommended pressure limiting valve where required

• 8-year cylinder warranty under Rinnai warranty terms

Quick Specs

Brand: Rinnai
Range: Hotflo Gas Storage
Product: Rinnai Hotflo 135L Gas Hot Water Storage
Product Codes: GHF4135N / GHF4135L
System Type: Gas Storage Hot Water System
Gas Type: Natural Gas or LPG depending on selected model
Installation Type: External use only
Rated Capacity: 135L
First Hour Delivery: 209L
Energy Rating: 4.7 Star
Warm Climate Suitability: Up to 5 people depending on usage
Cool Climate Suitability: Up to 4 people depending on usage
Tank Lining: Vitreous enamel lined steel
Anode Protection: Inbuilt sacrificial anode
Gas Consumption: 17 MJ/hr
Water Connections: Rp 3/4
Connection Size: 20mm
Relief Valve Setting: 1000 kPa
Expansion Control Setting: 850 kPa where required
Maximum Water Supply Pressure With ECV: 680 kPa
Maximum Water Supply Pressure Without ECV: 800 kPa
Recommended PLV: 500 kPa where required
Overall Height: 1579mm
Outlet Height: 1316mm
Inlet Height: 328mm
Empty Weight: 68kg
Cylinder Warranty: 8 years subject to Rinnai warranty terms

Natural Gas and LPG Models Available

The Rinnai Hotflo 135L Gas Storage Hot Water System is available in both natural gas and LPG models.

The correct gas type must be selected before ordering or installation. Natural gas and LPG models are not interchangeable without choosing the correct product and completing suitable licensed gas work.

If your home is connected to mains gas, the natural gas model may be the correct option. If your home uses bottled gas, the LPG model may be required.

209L First Hour Delivery

The Rinnai Hotflo 135L has a listed first hour delivery capacity of 209 litres.

First hour delivery combines the stored hot water in the tank with the system’s recovery performance. This helps show how much hot water the unit can deliver during the first hour of use under stated conditions.

For medium-sized households, this can help support normal routines such as showers, kitchen use and laundry demand.

4.7 Star Gas Efficiency

The Rinnai Hotflo 135L Gas Storage Water Heater has a 4.7 Star energy rating, making it a practical option for customers replacing older gas storage systems.

Actual running costs still depend on household hot water use, gas type, gas pricing, thermostat settings, installation condition, climate and how the system is used.

Vitreous Enamel Lined Tank

The Rinnai Hotflo 135L uses a vitreous enamel lined steel tank designed to support long-term durability.

Vitreous enamel lining helps protect the steel tank surface from stored hot water conditions. The system also includes inbuilt anode protection, which helps protect the cylinder as part of the tank’s corrosion protection design.

Correct installation, water pressure control, water quality, valve setup and servicing conditions can all affect hot water system lifespan and warranty outcomes.

Inbuilt Anode Protection

The Rinnai Hotflo 135L Gas Storage Water Heater includes inbuilt anode protection to help extend the life of the hot water tank.

Anodes are designed to gradually wear over time as part of protecting the cylinder. This makes maintenance and water quality checks important for long-term performance.

External Installation Only

The Rinnai Hotflo 135L Gas Storage Hot Water System is designed for external use only.

It should not be installed internally. Gas hot water systems must be installed in accordance with manufacturer instructions, gas fitting rules, ventilation requirements, clearance requirements and local compliance standards.

Strong Pressure to Multiple Outlets

The Rinnai Hotflo 135L is designed to deliver strong, consistent pressure to multiple outlets where the property’s plumbing and water pressure conditions are suitable.

This makes it a practical replacement option for homes that already have a gas storage system and want familiar stored hot water performance.

Thermostatic Safety Control

The Rinnai Hotflo 135L is thermostatically controlled and includes automatic safety temperature shut-off.

This helps control stored water temperature and adds protection as part of the system’s safety design.

Common Uses

The Rinnai Hotflo 135L Gas Storage Hot Water System can be suitable for:

• gas storage hot water replacement

• external gas storage installations

• medium-sized households

• townhouses

• rental properties

• investment homes

• homes using natural gas

• homes using LPG

• properties replacing older gas storage units

• homes wanting stored gas hot water

• homes wanting strong pressure to multiple outlets

Frequently Asked Questions

Can I buy the Rinnai Hotflo 135L supply only?

Yes. You can buy the Rinnai Hotflo 135L as a supply-only product if you already have a licensed gas fitter or plumber arranged.

Does Hot Water Outlet install gas hot water systems?

No. Hot Water Outlet does not directly provide installation services. Customers may request assistance arranging installation quotes after purchase in selected metro areas.

Can I get an installation quote after purchasing?

Yes. Customers in selected metro areas may request help arranging installation quotes through licensed local installers after purchasing the system.

Is delivery available Australia wide?

Metro delivery is available in selected service areas across Australia. Delivery availability may vary depending on location and product type.

Is the Rinnai Hotflo 135L natural gas or LPG?

The Rinnai Hotflo 135L is available in both natural gas and LPG models. The correct model must match the property’s gas type before ordering or installation.

What are the product codes?

The Rinnai Hotflo 135L product codes are GHF4135N and GHF4135L depending on gas type.

Can the Rinnai Hotflo 135L be installed indoors?

No. The Rinnai Hotflo 135L gas storage water heater is designed for external use only.

What is the rated capacity?

The Rinnai Hotflo 135L has a 135L rated capacity.

What is the first hour delivery?

The Rinnai Hotflo 135L has a listed 209L first hour delivery capacity.

How many people is the Rinnai Hotflo 135L suitable for?

Rinnai lists the Hotflo 135L as ideal for up to 5 people in warm climates and up to 4 people in cool climates depending on usage. Actual suitability depends on shower length, outlet demand, household habits and installation conditions.

What is the energy rating?

The Rinnai Hotflo 135L has a 4.7 Star energy rating.

What is the tank lining?

The Rinnai Hotflo 135L uses a vitreous enamel lined steel tank.

Does the Rinnai Hotflo 135L have an anode?

Yes. The Rinnai Hotflo 135L includes inbuilt anode protection to help extend the life of the hot water tank.

What is the gas consumption?

The Rinnai Hotflo 135L is listed with 17 MJ/hr gas consumption.

What is the relief valve setting?

The Rinnai Hotflo 135L has a listed 1000 kPa relief valve setting.

What is the expansion control setting?

The Rinnai Hotflo 135L has a listed 850 kPa expansion control setting where required.

What is the maximum water supply pressure?

The Rinnai Hotflo 135L lists 680 kPa maximum water supply pressure with an expansion control valve and 800 kPa maximum water supply pressure without an expansion control valve.

What are the dimensions?

The Rinnai Hotflo 135L has an overall height of 1579mm, outlet height of 1316mm and inlet height of 328mm.

How much does the Rinnai Hotflo 135L weigh?

The Rinnai Hotflo 135L has an empty weight of 68kg.

What is the warranty on the Rinnai Hotflo 135L?

The Rinnai Hotflo 135L is listed with an 8-year cylinder warranty subject to Rinnai warranty terms and conditions.

Is the Rinnai Hotflo 135L good for replacing an old gas storage hot water system?

Yes. The Rinnai Hotflo 135L can be a practical replacement option where the existing system is gas storage, the installation location is external, and the gas supply, water pressure, pipework and compliance requirements are suitable.

What is the difference between the Rinnai Hotflo 135L and 170L gas storage models?

The Rinnai Hotflo 170L provides more storage capacity and higher first hour delivery than the 135L model. The 135L model can suit medium-sized households, while the 170L model may be better for larger households or higher hot water demand.

* Requested element size may come delivered separately to system for electric systems - All units supplied with factory with 3.6kW

**Where a unit supplied is capable of supplying more than 50°C, a tempering valve must be installed on the property or purchased as part of a valve kit with your order.

Buying a new hot water system or hot water part should be simple. Hot Water Outlet helps you compare hot water systems, valves, thermostats, elements, pipework and fittings in one place, so you can choose the products that suit your home, budget and hot water needs without the back and forth.

Whether you already know exactly what you need or you are still comparing electric, gas, instant gas, gas storage or heat pump hot water options, Hot Water Outlet makes it easier to order with confidence.

Why Customers Choose Hot Water Outlet

Hot Water Systems and Parts in One Place

Shop hot water systems, valves, thermostats, elements, pipework and fittings online from one focused hot water store. Choose the system first, then add the parts and accessories needed for your setup.

Clear Product Pricing Before Checkout

See your hot water system price upfront, then add common valves, fittings or accessories before placing your order. This makes it easier to plan your purchase and compare options before checkout.

Product Details That Actually Help

Key specs, sizing details, tank capacity, flow rate, gas type, energy source, dimensions, warranty information, product features and suitability notes are shown clearly, so you can compare hot water systems properly before you buy.

Valves and Accessories Available

Where relevant, you can add common hot water parts such as tempering valves, pressure relief valves, duo valves, non-return valves, thermostats, elements, pipework and fittings to help complete your order.

Built for Australian Hot Water Buyers

Hot Water Outlet is focused on hot water systems and accessories for Australian homes, rentals, renovations and replacement projects. Browse trusted brands and compare practical options for common household hot water needs.

One Simple Online Order

Add your hot water unit and selected parts to cart in one order, instead of searching across multiple suppliers for systems, valves, fittings and accessories.

Practical Help Before You Buy

Not sure which hot water system, size, energy type or accessory is right? Hot Water Outlet gives you a clearer way to compare electric hot water systems, heat pump hot water systems, gas storage hot water systems and instant gas hot water units before you order.

Designed To Make Your Decision Easier

Hot Water Outlet is built for customers who want a faster, clearer and more convenient way to buy hot water systems and hot water parts online.

Instead of guessing which product suits your home, searching multiple suppliers, or trying to match accessories separately, you can review the system, compare the specifications and add common hot water parts before checkout.

Choose your hot water system.

Add the valves and accessories you need.

Compare product details before checkout.

Order online with confidence.

It is a simpler way to buy the hot water products and parts that matter most.

Important Note

Product suitability can vary by property, existing services, energy source, gas type, available space, connection points, pressure requirements and local compliance requirements. Always check product specifications carefully and confirm the selected hot water system, valves, fittings and accessories are suitable for your property before ordering.

DELIVERY TIMES WITH INSTALLATION - HOT WATER SYSTEMS EXC. HEAT PUMPS

Greater Brisbane and Gold Coast (EXCLUDING BAY ISLANDS) - up to 2 business days

Toowoomba, Tweed Heads and Sunshine Coast - up to 3 business days

DELIVERY TIMES WITHOUT INSTALLATION - HOT WATER SYSTEMS EXC. HEAT PUMPS

Greater Brisbane and Gold Coast (EXCLUDING BAY ISLANDS) - up to 3 business days

Toowoomba, Tweed Heads and Sunshine Coast - up to 5 business days

Harvey Bay, Cairns and Townsville - up to 5 business days

Metropolitan Cities - up to 5 Business Days

Listed Metropolitan Centers - up to 10 Business Days

DELIVERY TIMES WITH INSTALLATION - HEAT PUMPS

Greater Brisbane and Gold Coast (EXCLUDING BAY ISLANDS) - up to 2 business days

Toowoomba, Tweed Heads and Sunshine Coast - up to 5 business days

DELIVERY TIMES WITHOUT INSTALLATION - HEAT PUMPS

Greater Brisbane and Gold Coast (EXCLUDING BAY ISLANDS) - up to 5 business days

Toowoomba, Tweed Heads and Sunshine Coast - up to 5 business days

Metropolitan Cities - up to 5 Business Days

Listed Metropolitan Centers - up to 10 Business Days

DELIVERY TIMES WITH/WITHOUT INSTALLATION - PUMPS AND WATER FILTERS

Greater Brisbane and Gold Coast - up to 5 business days

Toowoomba, Tweed Heads and Sunshine Coast - up to 5 business days

Harvey Bay, Cairns and Townsville - up to 10 business days

**PLEASE NOTE ORDERS OUTSIDE OF THESE AREAS WILL BE REFUNDED AS SOON AS POSSIBLE**

SERVICED METROPOLITIAN CENTRES & CITIES

-Brisbane (EXCLUDING BAY ISLANDS)

-Gold Coast

-Sunshine Coast

-Toowoomba

-Coffs Harbour

-Tamworth

-Canberra

-Sydney (EXCLUDING ISLANDS)

-Bathurst

-Melbourne

-Ballarat

-Geelong

-Adelaide

-Perth

-Darwin

-Cairns

-Townsville

-Harvey Bay

-Rockhampton

-Bundaberg

-Tweed Heads

-Wollongong