Rinnai Hotflo 50L Electric Hot Water System

The Rinnai Hotflo 50L Electric Hot Water System is available online from Hot Water Outlet as a supply-only compact electric storage water heater with metro delivery available in selected areas Australia wide.

Customers can purchase the Rinnai Hotflo 50L 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 50L electric storage water heater is an ultra-compact hot water system designed for tight spaces, small homes, under-bench areas, cupboards, kitchenettes, laundries, offices and low-demand point-of-use applications. With 50L rated capacity, vitreous enamel lined steel tank, inbuilt anode protection, single element configuration, dual handed connections, internal or external installation suitability and a 7-year cylinder warranty, it is a practical choice for replacing a small electric hot water unit.

About the Rinnai Hotflo 50L Electric Water Heater

The Rinnai Hotflo 50L Electric Hot Water System is designed for compact spaces where a full-size electric storage hot water system is not required.

Rinnai positions the Hotflo 50L as a compact and reliable electric storage option for small houses, under-bench installations and cupboard installations where space is limited. It can suit low-demand applications where hot water is needed for a small number of fixtures rather than a full family household.

The system uses a vitreous enamel lined steel tank for durability, along with enhanced sacrificial anode protection to help extend tank life. It is thermostatically controlled, includes automatic safety temperature shut-off and is available with or without plug depending on the selected model.

Buy Rinnai Hotflo 50L Supply Only

Order the Rinnai Hotflo 50L Electric 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 plumber or electrician 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, electrical 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 50L Electric Hot Water System, customers in selected metro areas may request assistance arranging installation quotes through licensed local plumbers and electricians.

Installation quote availability depends on:

• service location

• installer availability

• existing system type

• electrical suitability

• plumbing suitability

• access requirements

• under-bench suitability

• compliance requirements

Additional installation costs may apply for:

• valve upgrades

• electrical work

• plumbing changes

• pipework alterations

• difficult access

• under-bench or cupboard modifications

• base preparation

• old system removal

• disposal

• compliance upgrades

Rinnai Hotflo 50L Delivery Brisbane

Hot Water Outlet offers metro delivery for the Rinnai Hotflo 50L Electric Hot Water System in selected Brisbane areas.

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

Rinnai Hotflo 50L Delivery Gold Coast

Hot Water Outlet offers metro delivery for the Rinnai Hotflo 50L Electric 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 50L Delivery Sydney

Hot Water Outlet offers metro delivery for the Rinnai Hotflo 50L Electric Hot Water System in selected Sydney metro areas.

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

Rinnai Hotflo 50L Delivery Melbourne

Hot Water Outlet offers metro delivery for the Rinnai Hotflo 50L Electric 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 50L Right for Your Property?

The Rinnai Hotflo 50L Electric Hot Water System may be suitable if you are replacing a small electric storage water heater and want a compact unit from a recognised hot water brand.

It is commonly suited to small houses, units, apartments, offices, kitchenettes, under-bench areas, cupboards, laundries and low-demand point-of-use hot water applications.

The 50L size is not designed to perform like a full-size family hot water system. It is best suited to limited hot water demand, compact installation spaces and applications where a larger tank would be unnecessary or difficult to fit.

This system may suit you if:

• you are replacing an existing small electric storage hot water system

• you want a 50L electric hot water unit

• you need hot water for a small home, kitchen, laundry, office or amenity area

• your hot water demand is low

• you need a compact under-bench or cupboard-friendly system

• you want a vitreous enamel lined steel tank

• you want inbuilt anode protection

• you need internal or external installation suitability

• you want a model available with or without plug

• your property has suitable access and installation space

• your plumbing and electrical setup are suitable for the selected installation option

• you prefer supply-only purchase flexibility

Extra work may be required if:

• the system is being moved to a new location

• existing valves are old, missing or non-compliant

• extra pipework or drainage changes are needed

• electrical upgrades or power point changes are required

• access is restricted

• under-bench or cupboard space is too limited

• a compliant base, tray, drainage or insulation is required

• the old system needs additional removal or disposal work

• the selected plug or no-plug model does not match the existing setup

• the existing water pressure requires valve or pressure control changes

Key Features of the Rinnai Hotflo 50L

• 50L electric storage hot water system

• Product code HFE50

• Ultra compact electric hot water tank

• Designed for tight spaces

• Perfect for under-bench and cupboard applications

• Suitable for small houses and low-demand use

• Rated capacity of 50L

• Vitreous enamel lined steel tank for durability

• Inbuilt anode protection to help extend tank life

• Dual handed connections for flexible installation

• Pressure temperature relief valve included

• Suitable for internal or external installation

• Thermostatically controlled operation

• Automatic safety temperature shut-off

• Available with or without plug

• Single element configuration

• Lead free

• Standard sizing for easier replacement and emergency changeovers

• 1.8kW, 2.4kW and 3.6kW heating element options on no-plug variants

• 240V 50Hz electrical supply

• IPX4 ingress protection rating

• Rp 3/4 water connections

• 7-year cylinder warranty under Rinnai warranty terms

Quick Specs

Brand: Rinnai
Range: Hotflo Electric Storage
Product: Rinnai Hotflo 50L Electric Hot Water Storage
Product Code: HFE50
System Type: Compact Electric Storage Hot Water System
Rated Capacity: 50L
Recommended Use: Small houses, under-bench areas, cupboards, offices, laundries and low-demand applications
Warm Climate Peak-Period Suitability: 1 person under listed sizing values
Off-Peak Suitability: Not generally recommended for listed off-peak sizing values
Element Configuration: Single element
Heating Elements Available: 1.8kW, 2.4kW and 3.6kW on no-plug variants
Plug Option: Available with or without plug depending on selected model
Electrical Supply: AC 240V 50Hz
Tank Lining: Vitreous enamel lined steel
Anode Protection: Inbuilt sacrificial anode
Installation Type: Internal or external installation
Water Connections: Rp 3/4
Connection Size: 20mm
Relief Valve Setting: 1000 kPa
Expansion Control Setting: 850 kPa
Maximum Water Supply Pressure With ECV: 680 kPa
Maximum Water Supply Pressure Without ECV: 800 kPa
Ingress Protection Rating: IPX4
Overall Height: 694mm
Outlet Height: 524mm
Inlet Height: 158mm
Electrical Connection Height: 75mm
Tank Diameter: 415mm
Empty Weight: 22kg
Cylinder Warranty: 7 years subject to Rinnai warranty terms

Ultra Compact Electric Storage

The Rinnai Hotflo 50L is designed for compact installation spaces where a larger hot water tank may not fit.

Its small tank size and 415mm diameter make it a practical option for under-bench areas, cupboards, laundries, offices, kitchenettes and small service areas. It is especially useful where the job requires a compact replacement rather than a large household storage system.

Under-Bench and Cupboard Applications

The Rinnai Hotflo 50L Electric Water Heater is well suited to under-bench and cupboard installations where space is limited.

These installations still need to be checked properly. The location must allow suitable access, ventilation, safe plumbing connection, valve placement, electrical connection, drainage where required, future servicing access and compliance with installation requirements.

Vitreous Enamel Lined Tank

The Rinnai Hotflo 50L 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 50L Electric Water Heater includes an inbuilt sacrificial anode 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.

Available With or Without Plug

The Rinnai Hotflo 50L is available with or without plug depending on the selected model.

This gives flexibility for different replacement jobs, but the correct model must match the site. Some installations may require a licensed electrician, a suitable circuit, a compliant power outlet or a hardwired electrical connection depending on the selected variant and existing setup.

Single Element Configuration

The Rinnai Hotflo 50L uses a single element configuration.

Single element compact electric water heaters are commonly used for low-demand applications where the system is serving a small number of outlets. The correct element size should match the selected model, electrical setup and site requirements.

Internal or External Installation

The Rinnai Hotflo 50L Electric Hot Water System is suitable for internal or external installation where the location is compliant and suitable.

This gives flexibility for homes, units and small commercial spaces replacing an existing compact electric storage system. Installation location still needs suitable access, drainage, base support, valve setup, electrical connection and compliance with plumbing and electrical requirements.

Dual Handed Connections

The Rinnai Hotflo 50L includes dual handed connections to allow more flexibility during installation.

This can make replacement easier because the water connections can better suit different existing plumbing layouts. Dual handed connection options are useful in compact replacement jobs where space and pipework position can be more limited.

Thermostatic Safety Control

The Rinnai Hotflo 50L is thermostatically controlled and includes automatic safety temperature shut-off.

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

50L Electric Storage Capacity

The 50L rated capacity makes this model a compact option for low-demand hot water use.

It can suit selected small homes, kitchens, laundries, offices and amenities, but it is not intended to replace a full-size family hot water system. For higher household demand, a larger electric storage system such as 125L, 160L, 250L, 315L or 400L may be more suitable.

Common Uses

The Rinnai Hotflo 50L Electric Hot Water System can be suitable for:

• small houses

• units and apartments with low hot water demand

• office kitchenettes

• canteens

• laundries

• small amenities

• under-bench installations

• cupboard installations

• compact replacement locations

• point-of-use hot water

• internal or external compact hot water installations

• homes needing more capacity than a very small point-of-use heater

Frequently Asked Questions

Can I buy the Rinnai Hotflo 50L supply only?

Yes. You can buy the Rinnai Hotflo 50L as a supply-only product if you already have a licensed installer arranged.

Does Hot Water Outlet install electric 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.

What is the product code for the Rinnai Hotflo 50L?

The product code for the Rinnai Hotflo 50L electric storage water heater is HFE50.

What is the rated capacity?

The Rinnai Hotflo 50L has a 50L rated capacity.

How many people is the Rinnai Hotflo 50L suitable for?

The Rinnai Hotflo 50L is designed for small houses and low-demand applications. Rinnai’s listed sizing values show warm climate peak-period suitability for 1 person. Real-world suitability depends on fixture demand, shower length, usage pattern, tariff setup and household habits.

Can the Rinnai Hotflo 50L be installed under a bench?

Yes. The Rinnai Hotflo 50L is designed to fit into tight spaces and is well suited to under-bench and cupboard applications where the location is compliant and suitable.

Can the Rinnai Hotflo 50L be installed outside?

Yes. The Rinnai Hotflo 50L is suitable for internal or external installation where the location is compliant and suitable.

Is the Rinnai Hotflo 50L single element or twin element?

The Rinnai Hotflo 50L uses a single element configuration.

Is the Rinnai Hotflo 50L available with a plug?

Yes. The Rinnai Hotflo 50L is available with or without plug depending on the selected model.

What element sizes are available?

The Rinnai Hotflo 50L lists 1.8kW, 2.4kW and 3.6kW heating element options on no-plug variants. The correct option depends on the selected model, electrical setup and site requirements.

What is the tank lining?

The Rinnai Hotflo 50L uses a vitreous enamel lined steel tank.

Does the Rinnai Hotflo 50L have an anode?

Yes. The Rinnai Hotflo 50L includes inbuilt anode protection to help extend the life of the hot water tank.

What is the relief valve setting?

The Rinnai Hotflo 50L has a listed 1000 kPa relief valve setting.

What is the expansion control setting?

The Rinnai Hotflo 50L has a listed 850 kPa expansion control setting.

What is the maximum water supply pressure?

The Rinnai Hotflo 50L 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 50L has an overall height of 694mm and a tank diameter of 415mm.

How much does the Rinnai Hotflo 50L weigh?

The Rinnai Hotflo 50L has an empty weight of 22kg.

What is the IP rating?

The Rinnai Hotflo 50L has an IPX4 ingress protection rating.

What is the warranty on the Rinnai Hotflo 50L?

The Rinnai Hotflo 50L is listed with a 7-year cylinder warranty subject to Rinnai warranty terms and conditions.

Is the Rinnai Hotflo 50L good for replacing an old small electric hot water system?

Yes. The Rinnai Hotflo 50L can be a practical replacement option for selected compact electric storage hot water systems, provided the existing location, plumbing, electrical supply, water pressure and hot water demand suit a 50L electric storage water heater.

What is the difference between the Rinnai Hotflo 50L and 125L?

The Rinnai Hotflo 50L is a compact low-demand system suited to small spaces, under-bench areas and point-of-use applications. The Rinnai Hotflo 125L provides more stored hot water and is better suited to small homes or households with higher daily hot water demand.

Tempering Valve and Element Information

*Element size information:
All electric hot water units are supplied as standard with a 3.6kW element unless otherwise stated on the product page, invoice, or order confirmation.

If a different element configuration is requested, such as 1.8kW or 2.4kW, the hot water unit may still arrive with the standard 3.6kW element fitted from the manufacturer. The requested 1.8kW or 2.4kW element will be supplied separately with the order for installation by a suitably licensed electrical contractor or licensed electrical licence holder.

Any element changeover, electrical connection, disconnection, wiring, testing, or modification must be carried out by a licensed electrical contractor or licensed electrical licence holder. Elements must not be changed, connected, modified, or tested by an unlicensed person.

Alternative elements supplied for non-standard configurations may be generic replacement elements and may not be the same brand as the hot water unit unless specifically stated. Generic elements are supplied to suit the requested element size and electrical configuration, but final suitability must be checked by the licensed installer before installation.

1.8kW and 2.4kW elements supplied separately with a hot water unit include a 12-month supply-only parts warranty from the date of purchase, provided the element has been correctly installed by a licensed electrical contractor or licensed electrical licence holder and used under normal operating conditions.

This element warranty covers the replacement supply of the element only. It does not include labour, call-out fees, electrical work, plumbing work, fault finding, removal, reinstallation, testing, travel, downtime, damage caused by incorrect installation, or any other associated costs. Warranty may be declined where the element has been incorrectly installed, dry-fired, modified, damaged, connected to incorrect voltage or wiring, affected by power issues, used in unsuitable water conditions, or installed by an unlicensed person.

Proof of purchase, installer details, electrical licence details, photos, and/or return of the faulty element may be required before a warranty claim is approved.

**Tempering valve information:
Where a hot water system is capable of delivering water above 50°C, a compliant tempering valve must be installed to control the temperature delivered to personal hygiene fixtures such as showers, baths, basins, and bathroom outlets. This helps reduce the risk of scalding and assists with meeting plumbing compliance requirements.

A tempering valve blends hot and cold water to deliver a safer controlled outlet temperature to required fixtures. The hot water unit itself may store water at a higher temperature, but the water delivered to personal hygiene outlets must be controlled where required by plumbing regulations.

If your property already has a suitable, compliant tempering valve installed, your licensed plumber can assess whether it is appropriate for use with the new hot water system. Existing valves may not always be suitable due to age, condition, compliance requirements, valve type, location, or system compatibility.

If a compliant tempering valve is not already installed, or if the existing valve is unsuitable, one must be supplied and installed by a licensed plumber as part of the hot water installation.

Tempering valves are not automatically included with every supply-only hot water unit unless specifically selected, listed as included, or purchased as part of a suitable valve kit. If a tempering valve is required, please purchase the appropriate valve kit with your order or arrange for your licensed installer to supply and install the correct tempering valve on site.

It is the customer’s responsibility to ensure the installation is completed by appropriately licensed trades and that all required valves, fittings, electrical work, plumbing work, and compliance requirements are allowed for as part of the installation.

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.

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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

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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.

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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.

Standard Delivery: 2–8 business days

Express Delivery: 1–4 business days

90% of products are delivered the next business day where stock, postcode eligibility and freight availability allow.

Delivery timeframes are estimates and may vary by product, stock location, delivery postcode, carrier availability and order timing. Wet weather, storms, flooding or unsafe site access may delay delivery and are additional to any advertised or guaranteed freight timeframes.