Rheem AmbiPower MDc-180 Heat Pump Hot Water System

The Rheem AmbiPower MDc-180 Heat Pump Hot Water System is available online from Hot Water Outlet as a supply-only heat pump water heater with metro delivery available in selected areas Australia wide.

Customers can purchase the Rheem AmbiPower MDc-180 as a supply-only heat pump hot water system and request assistance arranging installation quotes after purchase through licensed local installers in selected metro regions.

The Rheem AmbiPower MDc-180 is a compact heat pump hot water system designed for smaller households wanting to reduce hot water energy use compared with a standard electric water heater. With 180L-class capacity, R513a low GWP refrigerant, high COP performance, advanced wraparound microchannel heating and hardwired or plug and lead model options, it is a strong upgrade option for homes replacing a smaller electric storage hot water system.

About the Rheem AmbiPower MDc-180 Heat Pump

The Rheem AmbiPower MDc-180 is part of Rheem’s AmbiPower heat pump range. It uses heat from the surrounding air to heat stored water, making it a smart alternative where a traditional solar hot water system may not be suitable.

Unlike roof-mounted solar hot water, the AmbiPower MDc-180 does not rely on direct sunlight to heat your water. It captures ambient air heat and transfers that energy into the tank, helping reduce water heating energy consumption compared with a conventional electric water heater under suitable conditions.

Rheem lists the AmbiPower MDc-180 as suitable for 1 to 4 people, making it a practical choice for smaller families, townhouses, units, compact homes, rental properties and customers wanting a smaller heat pump option instead of a larger 270L or 280L system.

Buy Rheem AmbiPower MDc-180 Supply Only

Order the Rheem AmbiPower MDc-180 Heat Pump 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, electrician or installer 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, drainage changes, compliance upgrades and additional site requirements are not included unless separately quoted.

Supply-only is ideal for customers searching for:

• Rheem AmbiPower MDc-180 price

• Rheem AmbiPower 180L heat pump for sale

• Rheem 551D180 heat pump hot water system

• Rheem AmbiPower MDc-180 supply only

• 180L heat pump hot water system supply only

• Rheem heat pump water heater

• R513a heat pump hot water system

• Compact Rheem heat pump hot water system

Installation Quotes Available After Purchase

Hot Water Outlet does not directly provide installation services.

After purchasing the Rheem AmbiPower MDc-180 Heat Pump 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

• airflow suitability

• drainage suitability

• plumbing suitability

• electrical requirements

• compliance requirements

Additional installation costs may apply for:

• valve upgrades

• electrical upgrades

• drainage changes

• pipework changes

• difficult access

• concrete bases

• old system removal

• disposal

• compliance upgrades

Rheem AmbiPower MDc-180 Delivery Brisbane

Hot Water Outlet offers metro delivery for the Rheem AmbiPower MDc-180 Heat Pump Hot Water System in selected Brisbane areas.

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

Rheem AmbiPower MDc-180 Delivery Gold Coast

Hot Water Outlet offers metro delivery for the Rheem AmbiPower MDc-180 Heat Pump 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.

Rheem AmbiPower MDc-180 Delivery Sydney

Hot Water Outlet offers metro delivery for the Rheem AmbiPower MDc-180 Heat Pump Hot Water System in selected Sydney metro areas.

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

Rheem AmbiPower MDc-180 Delivery Melbourne

Hot Water Outlet offers metro delivery for the Rheem AmbiPower MDc-180 Heat Pump Hot Water System in selected Melbourne metro areas.

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

Is the Rheem AmbiPower MDc-180 Right for Your Home?

The Rheem AmbiPower MDc-180 Heat Pump may be suitable if you are replacing a smaller electric storage hot water system and want a compact heat pump option from one of Australia’s most recognised hot water brands.

It is commonly suited to smaller households, units, townhouses, rental properties, compact homes and households wanting lower water heating energy use than a standard electric water heater.

Rheem lists the AmbiPower MDc-180 as suitable for 1 to 4 people, but real-world suitability depends on shower length, hot water usage, tariff setup, climate, installation location, airflow, drainage, electrical supply and household hot water habits.

This system may suit you if:

• you are replacing an existing electric hot water system

• you want a compact 180L-class heat pump hot water system

• your household has around 1 to 4 people depending on usage

• you want a Rheem heat pump with low GWP R513a refrigerant

• you want a system that does not rely on direct sunlight

• you want hardwired or plug and lead model options

• you want backup element support

• you want touch screen LED control

• your property has suitable airflow, drainage and installation space

• your electrical setup is suitable for the selected model

• 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, power point changes or circuit changes are required

• access is restricted

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

• the old system needs additional removal or disposal work

• the installation location has poor airflow or unsuitable clearances

• the existing setup does not suit a heat pump installation

• the selected hardwired or plug and lead model does not match the site

Key Features of the Rheem AmbiPower MDc-180

• 180L-class heat pump hot water system

• Model 551D180

• Suitable for 1 to 4 people depending on usage

• New generation 178L capacity heat pump design

• Uses heat from surrounding air to heat water

• Does not rely on direct sunlight

• Smart energy-efficient alternative to a standard electric water heater

• High COP of 4.5 at 19°C under stated test conditions

• Can save up to 70% on water heating energy consumption in Zone 3 compared with an electric water heater under Rheem’s stated conditions

• R513a refrigerant

• Low GWP refrigerant with listed GWP of 631

• Advanced wraparound microchannel heating technology

• Designed for uniform and faster water heating

• Suitable for cold climates with operating range from -7°C to +43°C

• Suitable for harsh water conditions

• Hardwired version with 2.4kW backup element available

• Plug and lead version with 1.4kW backup element available

• User-friendly touch screen LED display

• Eligible for STCs where requirements are met

• May be eligible for additional incentives in some states

• 7-year cylinder supply warranty under Rheem warranty terms

• 3-year cylinder labour warranty under Rheem warranty terms

• 3-year sealed system supply and labour warranty under Rheem warranty terms

• 1-year parts supply and labour warranty under Rheem warranty terms

Quick Specs

Brand: Rheem
Range: AmbiPower Heat Pump
Product: Rheem AmbiPower MDc-180 Heat Pump
Model: 551D180
System Type: Heat Pump Hot Water System
Marketed Capacity: 180L class
Listed Capacity: 178L
Recommended Household Size: 1 to 4 people depending on usage
Refrigerant: R513a
Listed Refrigerant GWP: 631
COP: 4.5 at 19°C under stated test conditions
Heating Technology: Advanced wraparound microchannel heating
Operating Climate Suitability: -7°C to +43°C
Control Type: Touch screen LED display
Hardwired Models: 551D180C and 551D180C/B
Hardwired Backup Element: 2.4kW
Plug and Lead Models: 551D180C3P and 551D180C3P/B
Plug and Lead Backup Element: 1.4kW
Water Quality Suitability: Suitable for harsh water conditions
Government Incentive Eligibility: STCs where requirements are met
Cylinder Warranty: 7 years subject to Rheem warranty terms
Cylinder Labour Warranty: 3 years subject to Rheem warranty terms
Sealed System Warranty: 3 years supply and labour subject to Rheem warranty terms
Parts Warranty: 1 year supply and labour subject to Rheem warranty terms

Compact Heat Pump for Smaller Homes

The Rheem AmbiPower MDc-180 is designed for smaller households that want heat pump efficiency without moving to a larger tank size.

Its 180L-class capacity makes it a practical option for units, townhouses, smaller homes, granny flats and rental properties where hot water demand is moderate and the installation location suits a heat pump setup.

For larger households or higher hot water demand, a larger heat pump such as a 270L or 280L model may be more suitable.

Lower Energy Hot Water

The Rheem AmbiPower MDc-180 is designed to reduce water heating energy use compared with a standard electric water heater.

Heat pump technology works by absorbing heat from the surrounding air and transferring that heat into the stored water. This allows the system to produce hot water efficiently without relying only on direct electric element heating.

Rheem lists potential water heating energy savings of up to 70% in Zone 3 when replacing an electric water heater under stated conditions. Actual savings can vary depending on location, the system being replaced, hot water consumption, tariff setup, household usage and installation conditions.

R513a Low GWP Refrigerant

The Rheem AmbiPower MDc-180 uses R513a refrigerant listed with a global warming potential of 631.

This gives customers a modern heat pump option with lower GWP refrigerant technology while still delivering reliable hot water performance for smaller households and replacement installations.

Advanced Wraparound Microchannel Heating

The AmbiPower MDc-180 uses advanced wraparound microchannel heating technology designed to support uniform and faster water heating.

This design helps transfer heat efficiently into the stored water and supports recovery performance for daily household hot water demand.

Hardwired and Plug and Lead Options

The Rheem AmbiPower MDc-180 is available in hardwired and plug and lead configurations.

The hardwired version includes a 2.4kW backup element, while the plug and lead version includes a 1.4kW backup element. The correct option depends on the selected product variant, existing electrical setup, available circuit, installation location and compliance requirements.

This is important to confirm before ordering or installation, especially when replacing an existing electric storage water heater.

Touch Screen LED Display

The Rheem AmbiPower MDc-180 includes a user-friendly touch screen LED display.

This helps make system operation easier for the homeowner and provides a more modern control interface than many older electric storage systems.

Suitable for Cold and Harsh Conditions

The Rheem AmbiPower MDc-180 is designed to operate across a broad climate range and is listed as suitable for cold climates from -7°C to +43°C.

It is also listed as suitable for harsh water conditions, making it a practical heat pump option for a wider range of Australian homes where installation conditions and water quality need to be considered.

Government Incentives and STCs

The Rheem AmbiPower MDc-180 may be eligible for government incentives where requirements are met.

Eligible heat pump hot water systems may qualify for Small-scale Technology Certificates and may also be eligible for additional state-based incentives in some areas depending on product model, installation location, installer requirements, installation year and program rules.

Any rebate, STC discount or incentive should be confirmed before ordering or installation.

Common Uses

The Rheem AmbiPower MDc-180 can be suitable for:

• electric hot water system replacement

• heat pump hot water upgrades

• smaller homes

• townhouses

• units and apartments

• granny flats

• rental properties

• investment properties

• homes with 1 to 4 people depending on usage

• homes wanting lower energy use than standard electric storage

• homes where traditional roof-mounted solar hot water may not be suitable

• properties needing a compact heat pump hot water system

Frequently Asked Questions

Can I buy the Rheem AmbiPower MDc-180 supply only?

Yes. The Rheem AmbiPower MDc-180 can be purchased online as a supply-only product with metro delivery available in selected areas.

Does Hot Water Outlet install heat pump 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 model number for the Rheem AmbiPower MDc-180?

The Rheem AmbiPower MDc-180 model number is 551D180.

What is the tank capacity?

The Rheem AmbiPower MDc-180 is commonly referred to as a 180L-class heat pump and is listed with 178L capacity.

How many people is the Rheem AmbiPower MDc-180 suitable for?

Rheem lists the AmbiPower MDc-180 as suitable for 1 to 4 people. Actual suitability depends on shower length, hot water usage, tariff setup, climate and household habits.

What refrigerant does the Rheem AmbiPower MDc-180 use?

The Rheem AmbiPower MDc-180 uses R513a refrigerant.

What is the GWP of the refrigerant?

Rheem lists the R513a refrigerant used in the AmbiPower MDc-180 with a GWP of 631.

What is the COP of the Rheem AmbiPower MDc-180?

The Rheem AmbiPower MDc-180 is listed with a COP of 4.5 at 19°C under stated test conditions.

Does the Rheem AmbiPower MDc-180 need direct sunlight?

No. The AmbiPower MDc-180 uses heat from the surrounding air and does not rely on direct sunlight to heat water.

Is the Rheem AmbiPower MDc-180 hardwired or plug and lead?

Both options are available. Hardwired models include 551D180C and 551D180C/B with a 2.4kW backup element. Plug and lead models include 551D180C3P and 551D180C3P/B with a 1.4kW backup element.

Does the Rheem AmbiPower MDc-180 have a backup element?

Yes. The hardwired version has a 2.4kW backup element, while the plug and lead version has a 1.4kW backup element.

Is the Rheem AmbiPower MDc-180 suitable for cold climates?

Yes. Rheem lists the AmbiPower MDc-180 as suitable for cold climates with an operating range from -7°C to +43°C.

Is the Rheem AmbiPower MDc-180 suitable for harsh water conditions?

Yes. Rheem lists the AmbiPower MDc-180 as suitable for harsh water conditions.

Can the Rheem AmbiPower MDc-180 reduce running costs?

Yes. Rheem lists potential water heating energy savings of up to 70% in Zone 3 compared with an electric water heater under stated conditions. Actual savings depend on location, household usage, tariff setup, installation conditions and the system being replaced.

Is the Rheem AmbiPower MDc-180 eligible for rebates?

The Rheem AmbiPower MDc-180 may be eligible for STCs and may be eligible for additional incentives in some states where requirements are met. Eligibility and value can vary depending on location, installation year, product model, installer requirements and program rules.

What is the warranty on the Rheem AmbiPower MDc-180?

Rheem lists the AmbiPower MDc-180 with a 7-year cylinder supply warranty, 3-year cylinder labour warranty, 3-year sealed system supply and labour warranty and 1-year parts supply and labour warranty subject to Rheem warranty terms and conditions.

Is the Rheem AmbiPower MDc-180 good for replacing an electric hot water system?

Yes. The Rheem AmbiPower MDc-180 can be a strong heat pump replacement option for selected smaller electric hot water systems provided the property has suitable space, airflow, drainage, electrical supply and plumbing conditions.

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.

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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.

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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.

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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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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.