HDI Series

Product Features


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The HDi-310 Heat Pump introduces Top Down Heating, an advanced design which delivers a concentrated volume of hot water available for immediate use. This eliminates the waiting time for the entire tank to reheat, that you experience with electric water heaters. By using refrigerant-based technology, heat pumps can operate in any season, day and night. And given that heat pumps rely on extracting heat from the air, Rheem’s Heat Pump even comes with an electric ‘back-up boosting’ element to ensure that hot water is available 24/7, regardless of the weather and air temperature.

  • Tank: Vitreous Enamel
  • Warranty: 5 years*
  • Capacity: 310lt
  • Award winning design
  Unit HDi-310
Product Code   551310
Number of People (Moderate Climate)   3-6
Dimensions & Specifications
Tank (A) mm 1870
Width (B) mm 670
Depth (C) mm 679
Heat Pump Module kg 48
Tank kg 87
Capacity liters 310
Power Input watts 1300
Refrigerant   R134a
Element Sizes kw 2.4 or 3.6
Boost Capacity liters 220

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.