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Product Information Quick Specs & Benefits View sizing, power, warranty and key product details
Recommended Household Size 1-2 people
Make Rheem
Model 491125
Volume 125L
Maximum Warranty 12 years
Height 1340 mm
Width 480 mm
Made In Australia
Main Cylinder Material Steel

Rheem 125L Electric Hot Water System

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RHEEM ELECTRIC HOT WATER

Rheem 125L Electric Hot Water System

The Rheem 125L Electric Hot Water System is a compact electric storage water heater designed for smaller households, units, townhouses, granny flats, rental properties and replacement jobs where dependable stored hot water is required.

Installed Today offers the Rheem 125L as a supply-only electric hot water system, with supply and installation options available across eligible Brisbane and Gold Coast service areas.

Key features include 125L hot water delivery, a narrow 480 mm diameter, Rheem Ultranamel® cylinder protection, dual-handed inlet and outlet fittings, 1.8 kW and 3.6 kW element options and a 12-year cylinder warranty subject to Rheem warranty terms.

Rheem 125L at a glance: this is a compact 125L electric storage hot water system from Rheem's 491 / 492 Series. Rheem lists it as suitable for up to 4 people under its stated usage assumptions. Its 480 mm diameter can suit selected restricted-space replacement locations, and the system can be installed indoors or outdoors where suitable.
WHAT IT DOES

What Does the Rheem 125L Electric Water Heater Do?

The Rheem 125L stores and electrically heats domestic hot water for showers, basins, kitchens, laundry and other everyday household hot water requirements.

It is part of Rheem's 491 / 492 Series electric storage range and is designed for smaller households wanting straightforward electric storage hot water without moving to a larger family-size cylinder.

WHO IT SUITS

Who Is the Rheem 125L Best For?

Smaller Households

Rheem lists the 125L model as suitable for up to 4 people under its stated usage assumptions. Actual suitability depends on shower duration, flow rates, climate, tariff setup and household habits.

Units, Townhouses & Granny Flats

The compact 125L capacity and 480 mm diameter can suit selected apartments, townhouses, granny flats and smaller residential installations.

Electric Storage Replacement

The Rheem 125L can suit selected like-for-like replacement jobs where the existing installation position, plumbing, electrical supply and household demand are compatible.

WHO IT HELPS

What Problems Can the Rheem 125L Help Solve?

Limited Installation Space

The 480 mm diameter makes the system relatively narrow and useful for selected replacement positions where a wider storage tank may not fit comfortably.

Replacing an Older Small Tank

The 125L system is a practical option for replacing selected smaller electric storage water heaters where household hot water demand remains moderate.

Simple Electric Storage

The system provides conventional stored electric hot water without adding the additional equipment or installation requirements associated with other hot water technologies.

PRODUCT AT A GLANCE

Rheem 125L Key Details

125L Hot Water Delivery
Up to 4 People*
480 mm Cylinder Diameter
12 Years Cylinder Warranty**

*Based on Rheem's stated usage assumptions. **Subject to Rheem warranty terms, conditions and exclusions.

PRODUCT SUITABILITY

Is the Rheem 125L Right for My Home?

A Good Choice If...

You want a compact electric storage system, have moderate household hot water demand, need a narrow 480 mm cylinder or are replacing an existing smaller electric hot water system.

Consider Another Option If...

Your household regularly has higher hot water demand, needs more storage for consecutive showers or would be better suited to a 160L, 250L or larger system.

Check Before Ordering

Confirm access, installation space, base condition, plumbing connections, valve requirements, electrical supply and whether the selected 1.8 kW or 3.6 kW element configuration suits the site.

SIZE & APPLICATION

What Size Home Does the Rheem 125L Suit?

How Many People Does the Rheem 125L Suit?

Rheem lists the 125L electric water heater as suitable for up to 4 people, based on 7-minute showers at 42°C mixed water temperature in a moderate climate on a time-of-use tariff.

Actual suitability varies with shower length, household routines, fixture flow rates, climate and tariff setup.

When Is 125L a Useful Size?

A 125L system can suit smaller homes, units, townhouses, granny flats and compact replacement applications where a larger storage cylinder is not required.

When Should I Consider 160L?

The larger Rheem 160L may be worth considering where the household has stronger daily hot water demand or regularly runs short with a 125L storage system.

HOW IT WORKS

How Does the Rheem 125L Work?

1. Cold Water Enters

Cold water enters the storage cylinder through the plumbing connections and is held ready for heating.

2. Electric Element Heats

An electric element heats the stored water. Rheem lists 1.8 kW and 3.6 kW element options for the 125L model.

3. Hot Water Is Stored

The heated water remains stored in the insulated cylinder until required at connected household fixtures.

KEY FEATURES

Key Features of the Rheem 125L

125L Hot Water Delivery

The storage capacity is designed for smaller households and moderate daily hot water demand.

Compact 480 mm Diameter

The narrow cylinder can help where available installation width is restricted compared with larger electric storage models.

Rheem Ultranamel®

The cylinder uses Rheem Ultranamel® coating to help protect the internal cylinder surface and support long-term performance.

Dual-Handed Connections

Dual-handed inlet and outlet fittings provide additional plumbing flexibility during suitable replacement installations.

Recessed Plug Fittings

Recessed plug fittings are included as part of the compact replacement-oriented design.

Indoor or Outdoor Installation

The unit can be installed indoors or outdoors where the selected position and installation comply with applicable requirements.

TECHNICAL DETAILS

Rheem 125L Specifications

Specification Details
Brand Rheem
Range Rheem 491 / 492 Series Electric
Model 491125
System Type Electric storage hot water system
Hot Water Delivery 125L
Household Guide Up to 4 people under Rheem's stated usage assumptions
Element Options 1.8 kW and 3.6 kW
Installation Indoor or outdoor where suitable
Water Connections Rp 3/4
Relief Valve Pressure 1400 kPa
Expansion Control Valve Setting 1200 kPa
Maximum Water Supply Pressure With ECV 960 kPa
Maximum Water Supply Pressure Without ECV 1120 kPa
Diameter 480 mm
Approximate Height 1340 mm
Approximate Packaged Weight 51 kg
Cylinder Protection Rheem Ultranamel® cylinder coating
Cylinder Warranty 12 years, subject to Rheem warranty terms
Cylinder Labour Warranty 1 year, subject to Rheem warranty terms
Other Domestic Parts & Labour Warranty 1 year, subject to Rheem warranty terms
COMPACT DESIGN

How Compact Is the Rheem 125L?

The Rheem 125L has a 480 mm diameter and an approximate height of 1340 mm.

This compact footprint can make it useful for selected tight external corners, narrow side access areas, compact service spaces, units and replacement locations where a wider storage water heater may be more difficult to accommodate.

Actual suitability still depends on access, base condition, service clearance and plumbing requirements.

CYLINDER PROTECTION

Rheem Ultranamel® Cylinder Protection

The Rheem 125L uses Rheem Ultranamel® cylinder coating, a durable internal coating designed to help protect the cylinder and support long-term operation.

Water quality, correct installation, valve setup, servicing and operating conditions can all affect the lifespan and performance of an electric storage water heater.

DUAL-HANDED CONNECTIONS

How Do the Rheem 125L Connections Help With Replacement?

The Rheem 125L includes dual-handed inlet and outlet fittings. These can make selected replacement jobs easier by providing additional flexibility when matching existing plumbing layouts.

Dual-handed fittings can reduce unnecessary plumbing changes where the existing installation and connection positions are compatible.

INSTALLATION REQUIREMENTS

What Is Required to Install the Rheem 125L?

Installation requirements depend on whether the unit is replacing an existing electric storage system or being installed in a new or relocated position.

  • Suitable compliant installation position
  • Level and structurally adequate base
  • Access for a unit approximately 1340 mm high and 480 mm diameter
  • Compatible hot and cold water connections
  • Correct valve arrangement
  • Suitable incoming water pressure
  • Compliant pressure-relief discharge
  • Suitable electrical supply for the selected element rating
  • Suitable indoor or outdoor installation location
  • Adequate service access
  • Any required tray or drainage provisions
  • Any required plumbing or electrical compliance upgrades
WATER PRESSURE

Rheem 125L Water Pressure Requirements

The supplied specifications list a 1400 kPa relief valve pressure and a 1200 kPa expansion control valve setting.

The listed maximum water supply pressure is 960 kPa when an ECV is fitted and 1120 kPa without an ECV.

Incoming water pressure and the existing valve arrangement should be checked during installation planning. Replacement or additional valves may be required depending on the site.

REPLACEMENT & UPGRADES

Can the Rheem 125L Replace My Existing Hot Water System?

The Rheem 125L can be a practical replacement for selected smaller electric storage water heaters where the existing installation position, plumbing, electrical supply and household hot water demand are compatible.

Its narrow diameter, dual-handed fittings and replacement-oriented design can help with selected changeovers, although each site should still be checked before assuming installation will be like-for-like.

Moving Up to 160L

If the household regularly runs short of hot water with a 125L system, the larger Rheem 160L may provide a more suitable storage capacity where installation space allows.

Relocating the System

Moving the new water heater away from the existing location can require additional pipework, drainage, electrical work, base preparation and labour.

WHAT'S INCLUDED

What's Included With the Rheem 125L?

Supply Only

Choose supply only if you already have appropriately licensed trades arranged. The product price covers the Rheem 125L unit and applicable manufacturer-supplied components.

Supplied & Installed

Where available, choose an Installed Today supply and installation package covering the unit plus the selected standard installation scope.

Possible Additional Work

Valve kits, old-system removal, disposal, electrical alterations, pipework changes, relocation, drainage, base work, restricted access and compliance upgrades may require additional charges.

SUPPLY OR INSTALL

Choose How You Want to Order the Rheem 125L

Supply Only

Choose supply only when you already have appropriately licensed trades arranged and simply need the Rheem 125L supplied.

Brisbane Installation

Supplied and installed options are available across eligible Brisbane service areas, subject to access, site conditions and installation availability.

Gold Coast Installation

Supplied and installed options are available across eligible Gold Coast service areas, subject to site suitability and installation availability.

SUPPLY OPTIONS

Buy the Rheem 125L From Installed Today

Installed Today offers supply-only ordering for customers who already have licensed trades arranged. Delivery availability and freight requirements depend on the destination and order.

Eligible Brisbane and Gold Coast customers can also select supply and installation options where available.

Brisbane Gold Coast Supply Only Supply & Install
BRISBANE INSTALLATION

Rheem 125L Supply & Installation Brisbane

Brisbane customers can order the Rheem 125L with an eligible supply and installation package. The compact system may suit units, townhouses, granny flats, smaller homes, rental properties and selected replacement applications.

Before installation, the property should be checked for access, base condition, plumbing connections, valve requirements and electrical suitability for the selected element rating.

GOLD COAST INSTALLATION

Rheem 125L Supply & Installation Gold Coast

Eligible Gold Coast customers can select the Rheem 125L as a supplied and installed electric hot water package.

This may suit homeowners, landlords, unit owners, renovators and property managers wanting the product and installation organised together. Final installation scope depends on the existing plumbing, electrical setup, access, valves and whether additional removal or upgrade work is required.

COMPARE YOUR OPTIONS

Rheem 125L vs 160L Electric Storage

Feature Rheem 125L Rheem 160L
Hot Water Delivery 125L 160L
Typical Application Smaller households and compact replacement locations Smaller families and moderate demand
Diameter 480 mm 480 mm
Main Reason to Consider Lower-capacity compact storage More stored hot water while retaining a slim cylinder

Rheem 125L vs 160L

The Rheem 160L provides more stored hot water than the 125L model and may better suit smaller families or homes with stronger daily hot water demand.

The 125L remains the lower-capacity option where household demand is moderate and the additional storage of the 160L is not required.

COMMON QUESTIONS

Questions About the Rheem 125L

Can I buy the Rheem 125L supply only?

Yes. The Rheem 125L can be purchased as a supply-only product if you already have appropriately licensed trades arranged.

Can Installed Today install the Rheem 125L?

Supply and installation options are available across eligible Brisbane and Gold Coast service areas, subject to site suitability and installation availability.

Is installation included in the product price?

No. The main product price is for the unit unless an installed option is selected. Installation, valves, electrical work, old-system removal, disposal and other site-specific requirements are separate unless expressly included.

What does the installed-from price include?

The installed-from price is based on the Rheem 125L unit plus the matching standard installation option. Final pricing can vary depending on valves, removal or disposal, plumbing, electrical work, access and compliance requirements.

Do I need a valve kit?

Many electric hot water replacements require compatible valves to meet installation and compliance requirements. The existing installation should be checked before ordering.

What is the Rheem 125L model number?

The Rheem 125L electric water heater model is 491125.

How much hot water does the Rheem 125L deliver?

The Rheem 125L has a listed hot water delivery of 125 litres.

How many people does the Rheem 125L suit?

Rheem lists the 125L electric water heater as suitable for up to 4 people, based on 7-minute showers at 42°C mixed water temperature in a moderate climate on a time-of-use tariff.

Can the Rheem 125L be installed outside?

Yes. The supplied product information lists the Rheem 125L for indoor or outdoor installation where the installation location is compliant and suitable.

What element ratings are available?

The supplied specifications list 1.8 kW and 3.6 kW element options.

What are the approximate dimensions?

The supplied specifications list a 480 mm diameter and an approximate height of 1340 mm.

What is the approximate packaged weight?

The listed packaged weight is approximately 51 kg.

Is the Rheem 125L suitable for tight spaces?

Its 480 mm diameter makes it useful for selected restricted-space installations, although access, base condition and required service clearances still need to be confirmed.

What is the relief valve pressure?

The listed relief valve pressure is 1400 kPa.

What is the expansion control valve setting?

The listed expansion control valve setting is 1200 kPa.

What is the maximum water supply pressure?

The supplied specifications list a maximum water supply pressure of 960 kPa with an ECV and 1120 kPa without an ECV.

Does the Rheem 125L have dual-handed connections?

Yes. The Rheem 125L includes dual-handed inlet and outlet fittings to provide additional flexibility when matching existing plumbing.

Can it replace an old 125L electric water heater?

It may be suitable where the existing installation position, plumbing, electrical setup, access and household hot water demand are compatible.

What is the difference between the Rheem 125L and 160L?

The Rheem 160L provides more stored hot water while retaining a similarly slim cylinder diameter, making it worth considering where household demand is higher.

WARRANTY & MAINTENANCE

Rheem 125L Warranty and Maintenance

The supplied product information lists a 12-year cylinder warranty, a 1-year labour warranty on the cylinder and a 1-year parts and labour warranty on all other domestic components, subject to Rheem's warranty terms, conditions and exclusions.

Ongoing servicing and maintenance should include the water heater, valves, plumbing and electrical components as required by Rheem and applicable installation requirements.

WHY INSTALLED TODAY

Why Buy the Rheem 125L From Installed Today?

Installed Today gives customers a straightforward way to purchase the Rheem 125L as a supply-only product or select an eligible supplied-and-installed package in Brisbane or the Gold Coast.

Supply Only For Customers With Their Own Trades
125L Compact Electric Storage
Brisbane Eligible Installation Areas
Gold Coast Eligible Installation Areas
FINAL CHECK

Is the Rheem 125L Right for You?

The Rheem 125L Electric Hot Water System is primarily suited to smaller households and compact replacement applications wanting reliable electric storage hot water in a relatively narrow cylinder.

Before ordering, confirm that the property can accommodate the unit's approximate 1340 mm height, 480 mm diameter and 51 kg packaged weight, together with the required plumbing, valves and electrical supply. Choose supply only if your licensed trades are already arranged, or select an eligible Brisbane or Gold Coast supply and installation option where available.

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.

A Simpler Way to Buy Hot Water, Filters, Pumps and Plumbing Products

Buying a new hot water system, water filter, pump or plumbing product should be clear, simple and easy to organise.

Installed Today helps you compare products, check supply-only pricing and, where available, build an optional installation package before checkout. That means you can choose the product, review the available options and order with more confidence, without the usual back and forth just to understand the starting price.

Whether you already know exactly what you need or you are still comparing options, Installed Today gives you a clearer way to buy the right product for your home, budget and timing.

Why Customers Choose Installed Today

Supply Only or Optional Installation

Choose the product on its own, or add installation where available on selected products and in eligible service areas. This gives you the flexibility to order the way that suits you best.

Clear Pricing Before Checkout

See the product price upfront, then review available installation options and common add-ons before placing your order. You can check the package total before checkout, instead of waiting on basic pricing just to get started.

Product Details That Actually Help

Key specs, sizing details, warranty information, product features and suitability notes are shown clearly, making it easier to compare products properly before you buy.

Common Installation Add-Ons Available

Where relevant, you can add common installation extras such as valve kits, bases, access-related items, removal, electrical options or other site-specific upgrades before checkout.

Built Around Brisbane and Gold Coast Homes

Our product and installation options are selected with common Brisbane and Gold Coast homes in mind, including local water quality, access issues, plumbing layouts, replacement requirements and typical installation conditions.

One Simple Order

Add the product and selected options to cart in one order, instead of trying to organise separate suppliers, installers, parts and payments yourself.

Practical Help Before You Buy

Not sure which size, model or installation option is right? Installed Today gives you a clearer path to compare your options before you order.

Designed to Make Your Decision Easier

Installed Today is built for customers who want a faster, clearer and more convenient way to buy.

Instead of guessing what is included, waiting for basic pricing or trying to work out which extras may be needed, you can review the product, compare your options and move forward with confidence.

Choose supply only if you just need the product.

Choose an optional supplied and installed package where installation is available and you want the product and selected install options organised in one order.

Add common extras before checkout if your job needs additional parts, removal, access support or site-specific options.

It is a simpler way to organise the product, the selected extras and the parts of the job that matter most.

Important Installation Note

Installation availability, inclusions and add-ons vary by product type, service area, site access, existing services, selected options and property requirements.

Some jobs may require additional work, upgrades or checks before installation can proceed. Final suitability may need to be confirmed based on site conditions, plumbing, electrical requirements, valves, drainage, access and compliance requirements.

Supply-only orders do not include installation, old unit removal, disposal, valve kits, electrical work, plumbing alterations or compliance upgrades unless these are clearly selected or included in your order.

Fast Delivery and Install-Aligned Shipping

Installed Today makes delivery simple, whether you are ordering supply-only or choosing an optional install package.

For supply-only orders, you can select from available delivery options at checkout. For eligible orders with installation selected, shipping is included and coordinated to align with your selected installation period where possible.

Delivery Options

Same Day Delivery

Same day delivery may be available for selected hot water systems in Brisbane and Gold Coast metro areas when ordered before 7:00am.

Availability depends on stock, courier capacity, delivery location, product type and safe transport conditions.

Express Delivery

Express delivery is available on selected products and locations, with an estimated delivery timeframe of 1–4 business days.

Standard Delivery

Standard delivery is available on selected products, with an estimated delivery timeframe of 2–8 business days.

Free Shipping with Installation

When you select an eligible installation package, delivery is included as part of the supplied and installed order.

Your product delivery will be organised to align with your selected installation period where possible, helping avoid separate courier timing, storage issues or delays between delivery and installation.

Fast Metro Delivery

Most hot water orders in metro areas are delivered quickly, with many arriving within 1 business day depending on stock, location, order time and courier availability.

Weather and Transport Delays

Hot water systems are large, heavy products and cannot always be transported safely during rain or unsafe handling conditions.

Delivery timeframes may be affected if wet weather impacts loading, unloading, transport access or safe delivery conditions.

Express Delivery Refund

If your express delivery order takes longer than the estimated 1–4 business day express timeframe, your order will move to the standard 2–8 business day delivery timeframe and your express shipping charge will be refunded automatically.

Order Tracking

We will send your delivery details once your order has been dispatched or scheduled.

For supplied and installed orders, delivery timing may be coordinated around your selected installation period rather than sent as a separate courier-only delivery.

Need Help with Delivery?

Not sure whether to choose supply-only delivery or an optional install package? Contact our team before ordering and we can help you understand the best option for your product, location and timing.

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