Rheem Heat Pumps deliver hot water by efficiently utilising a free and abundant source of energy – the heat that is in the air around us. Refrigerant vapour compression technology enables the heat pump to intensify this heat, which is used to produce hot water. Rheem Heat Pumps are more efficient during warmer months, and will operate for less hours during the day than in colder months of the year.

Because Heat Pumps do not require solar collectors, they are perfect where roof space is limited. Additionally, since they utilise the same plumbing and electrical connections as an electric water heater, Heat Pumps are an ideal upgrade from a standard electric water heater.

Which system you choose will depend on where in Australia you live, which way your home faces and even the pitch of your roof. So it’s important to talk to your local Rheem Solar Specialist about the Rheem solar water heater that is ideal for you. And, your local Rheem Solar Specialist has all the latest information on the currently available Solar Incentives – ask them how much you can claim.

Ambiheat Heat Pump

Product Features


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The AMBIHEAT HDc-270 Heat Pump is a smart, energy efficient alternative for areas where a traditional solar water heater may not be suitable. It uses the heat from the surrounding air and does not rely on the direct sunlight, to heat your water and provides a reliable, efficient and sustainable way to reduce your water heating energy consumption. A Heat Pump works day and night as it extracts heat from the surrounding air and doesn’t rely on direct sunlight to operate.

AMBIHEAT Heat Pump has been designed and tested to withstand the harsh Australian conditions:
Enamel lined water tank: The enamel coating reduces the risk of corrosion and water leakage.
Microchannel technology: Provide a larger contact area for more efficient water heating.
Side fan design: Design specially developed to protect the unit from rain.
Durable top cover: With its durable ASA top cover*, the unit can easily withstand all weather conditions.
Smart LED controller display: A bright interactive LED touchscreen display putting control at your fingertips.
  • Advanced wrap around microchannel heating technology for uniform and faster water heating
  • Suitable for cold climates (-5˚C to 43+˚C)
  • Suitable for harsh water conditions+
  • Save up to 64% to 71% in Zone 1 to Zone 5 on your water heating energy consumption compared to an electric water heater #
  • High recovery rate for fast heating and 2.4kW back-up element
  • Leading technology with user-friendly touch screen LED display
  • Eligible for STCs
  • Suitable for 2 to 5 people



  • 7 years cylinder* supply
  • 3 years cylinder labour*
  • 2 years sealed systems supply including labour
  • 1 year parts supply and labour on all other parts

*Applies to installation in a single-family domestic dwelling only.

Rheem warranty may not apply if the water heater is connected to a water supply which: has a Chloride content >250mg/L; a pH <6.0 or >9.5; has a Total Dissolved Solids content >600mg/L; is scaling with a Saturation Index >+0.8, or; is corrosive with a Saturation Index <-1.0.


# Energy savings of up to and between 64% to 71% in Zone 1 to 5 on hot water energy consumption when replacing an electric water heater (min 16 hours/day). Any savings will vary depending upon your location, type of water heater being replaced, hot water consumption and fuel tariff. Zone 1 - 71.2%, Zone 2 - 93.9%, Zone 3 - 68.5%, Zone 4 - 65.5% & Zone 5 - 64.1%.


MODEL   HDc-270
System Unit 551270
Storage Capacity litres 270
Boost Capacity litres 195
Rated Heat Pump Power Input W 985
Element Rating kW 2.4
Coefficient of Performance (COP) kW 4.5
People Per Household   2 to 5
Dimensions & Specifications    
Tank Height (A) mm 1825
Tank Width (B) mm 730
Tank Depth (C) mm 760
Tank Weight – Empty kg 136
Heat Pump Module Weight kg N/A
System Weight - Empty kg 136
System Weight - Full kg 306
Refrigerant    R134a
Water Connections & Settings    
Inlet    RP 3/4
Outlet    RP 3/4
Temp Press Relief Valve Setting kPa 1000
Expansion Control Valve kPa 850
Maximum Mains Supply Pressure    
With expansion control valve kPa 680
Without expansion control valve kPa 800
Minimum Water Supply Pressure kPa 200


MPi Series

Product Features


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The Rheem MPi Series Heat Pump is suitable for moderate – warm climates and average size families. The new MPi Series II Rheem Heat Pump utilises the latest environmental heating technology to efficiently heat water. Free, renewable heat energy is absorbed and processed through a refrigeration system, resulting in hot water using a third of the energy of an electric water heater. These are similar savings to a solar water heater, but without needing panels mounted on your roof.

  • Tank: Vitreous Enamel
  • Warranty: 5 years*
  • Climatic: Non-Frost
  • Capacity: 325lt
  Unit MPi-325
Product Code   551325  
RheemPlus®     554325
Number of People (Moderate Climate)   2-5 2-5
Dimensions & Specifications
Module (D) mm 1018 1018
Tank (A) mm 1631 1636
Width (B) mm 894 1006
Depth (C) mm 638 638
Heat Pump Module kg 42 42
Tank kg 88 90
Capacity liters 325 325
Power Input watts 800 800
Refrigerant   R134a R134a
Element Sizes kw 2.4 or 3.6 2.4 or 3.6
Boost Capacity  liters 180 180

Warranty Duration Cylinder Sealed System Labour
Replacement Parts 5 years 2 years 1 year
Labour 3 years 2 years 1 year


Applies to domestic installations only. Amended warranty may apply where a government rebate has been received for the solar or heat pump water heater.