text.skipToContent text.skipToNavigation
install a

MODEL NO: 551E280
Rheem AmbiPower 280e Heat Pump

The AmbiPower® 280e is a Low GWP (Global Warming Potential) R290 refrigerant 280 litre Heat Pump for replacement of an electric water heater.  It is an energy efficient alternative for areas where a traditional solar water heater may not be suitable with a high Coefficient of Performance (COP) of 5.2.

Features at a Glance

No. of People
7 Year

The AmbiPower® 280e is a Low GWP (Global Warming Potential) R290 refrigerant 280 litre Heat Pump - great for replacement of an electric water heater.  AmbiPower 280e is an energy efficient alternative for areas where a traditional solar water heater may not be suitable. It has a high Coefficient of Performance (COP) of 5.2. With its advanced wrap around microchannel heating technology for uniform and faster water heating the AmbiPower 280e is suitable for harsh water conditions; and cold climates (with an operating range from -6°C) to higher ambient temperatures. 

AmbiPower® 280e Heat Pump has been designed and tested to withstand the harsh Australian conditions, with:

  • Enamel lined water tank reduces the risk of corrosion.
  • Side fan design provides maximum airflow and protects from the rain.
  • Durable outer shell in painted sheet metal design with Aluminium top cover to reduce corrosion and withstand harsh weather conditions.
  • LED touchscreen controller provides optimum visibility, product performance information and user-friendly operation.


  • Advanced wrap around microchannel heating technology for uniform and faster water heating
  • Suitable for cold climates with an operating range from -6°C to +43°C
  • Suitable for harsh water conditions
  • Can save up to 73.9% on your water heating energy consumption compared to an electric water heater in Zone 3#
  • 2.4 kW back-up element for cold climatic conditions
  • User-friendly touch screen LED display
  • Eligible for STCs (may be eligible for additional incentives in some states)
  • 7 year cylinder warranty*
  • Suitable for up to 6 people^
  • Uses R290 refrigerant with a GWP of <3


Warranty details*:

  • 7 years cylinder supply
  • 3 years cylinder labour
  • 3 years sealed systems supply including labour
  • 1 year parts supply and labour on all other parts
*The warranty periods above apply to installations in a single-family domestic dwelling only. For further details, please refer to the Owner’s Guide available in the Downloads tab on this page. Without limiting the above periods, a 5-year whole-of-product warranty applies where a rebate has been received under Solar Victoria’s Solar Homes Program for installations from 1 July 2023. For further details, call Rheem Australia on 131 031.
+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 73.9% in Zone 3 based on TRNSYS modelling 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.
^ Based on 7 min showers at 42°C mixed water temperature in moderate climate, time of use tariff.

Running Cost Estimator

Running Cost Estimator Disclaimer as at 01/10/2023

Things that you should know about the Rheem Running Cost Estimator

The estimator is provided as a guide only to help you compare estimated running costs between various water heater types.

The estimator is based on Australian Standard AS5263, which relies on certain assumptions, such as an average daily load of 200L and 19 tap turns. Your situation and usage may be different to these assumptions, so the estimator may not match your actual daily loads and pattern of use.

Accordingly, the estimator cannot and does not purport to provide an accurate assessment of your yearly hot water energy bill. It does, however, allow a reasonable comparison between various water heater types based on Australian Standard AS5263 and average fuel tariffs used in the estimator.

Your state has been used to determine the temperature rise required to heat water from cold to a temperature of 65C, the applicable charge for the tariff type selected and the amount of solar savings.

Solar savings are based on Australian Government approved modelling for the type of solar water heater selected and the booster type. All electric boosted solar water heaters are modelled with a continuous tariff, but may be suitable for use on other tariff types depending on the model selected, your climate zone and the amount and usage pattern of hot water use.

Tariffs are current as at 9th March 2023 and represent an average price for the fuel type for the capital city in the state or territory, including GST.

Fixed charges, system access charges, delivery fees and any other fees and charges, including special rates and discounts are excluded from the estimator.

Energy consumption figures used are for a typical water heater within a category and do not reflect a specific model. Actual energy use may vary.

Heat Pump and solar water heaters may be suitable for Off Peak/Shoulder Rate tariffs depending on the type of water heater selected and the location. You should consult with your energy provider or installer before making any decision.