Rheem MPi-325 Series II Heat Pump Hot Water Heater

Rheem MPi-325 Series II Heat Pump Hot Water Heater

The Rheem MPi-325 series 11 heat pump is an ideal choice for the replacement of an existing electric hot water heater and is a cost effective way to significantly cut the costs of your energy bill by up to 66% in savings. It is an environmentally friendly hot water system, taking in the equivalent of up to 2kW of free renewable energy from the air and up to 1kW of electrical energy. It is also capable of providing the energy efficiency of a 3kW system of up to a 1/3 of the cost of an electric water heater on the same tariff.

The Rheem MPi series 11 heat pump is also an ideal selection for the average sized family of at least 2-5 people and is more than suitable for moderate to warm climates around Australia. It works day and night without having to rely on sunlight to operate.


The heat pump technology design has the module located down low to keep the noise away from the windows of the home, and its concealed factory fitted tempering valve is designed to blend with the home. It doesn’t require any solar panels, thus requiring no structural loads on the roof and looks better as well. The two piece interconnecting valve design allows for the easy installation of the heat pump by just one person. Lastly, it can be enjoyed without the worry or hassle of extra costs with its warranty for 5 years on the cylinder and 3 years on any labour required on the cylinder, making it an ideal choice for your next hot water installation!


  • 325L Tank capacity is suitable for 2-5 people- perfect upgrade for households with a large demand for hot water
  • Minimises energy consumption costs and greenhouse gas emissions thanks to the constant recovery system
  • Quieter operation due to the whisper technology built into the system itself
  • Maximum temperature of 50°C so you can be sure turning on the tap is safer for everyone in the family
  • Fitting locations make it an ideal replacement for an electric water heater
  • Back up electric element ensures hot water on the coldest of winter nights
  • 5 year warranty


  • Suitable for No. of People (moderate climate) 2 – 5
  • Dimensions Height (A) mm 1631
  • Width (B) mm 863
  • Depth (C) mm 638
  • Weight Heat Pump Module kg 42
  • Tank kg 88
  • Technical Storage Capacity L 325
  • Power Input Watts 800
  • Refrigerant R134a
  • Element Sizes kW 3.6
  • Boost Capacity L 180
  • Water Connections & Settings Inlet RP ¾/20
  • Outlet RP ¾/20
  • Tank Relief Valve Setting kPa 1000
  • ECV Setting kPa 850
  • Maximum Mains Pressure Settings With ECV kPa 680
  • Without ECV kPa 800
  • Min Water Supply Pressure kPa 200