Mercy Rays Pty Ltd


  1.  A fan draws in air containing heat energy, across the evaporator
  2.  The evaporator turns the liquid refrigerant into a gas
  3.  The compressor pressurises the refrigerant into a hot gas
  4.  The hot gas inside the condenser coil heats the water inside the coil-wrapped tank
  5.  The refrigerant reverts back to a liquid after heating the water and continues to the evaporator for the process to start again
  6.  The cycle continues until the set target temperature is achieved

Heat pumps are becoming very popular due to its simplicity in drawing the heat energy in the air to evaporate the liquid refrigerant to gas which is then compressed to be able release the energy to heat the water. Similar to reverse cycle air conditioning when used as a room heater.

Some heat pumps come as ‘All-In-One’ with its evaporator/compressor enclosed in one unit as shown above. In some cases these are boxed in a separate unit, sitting by the side of the storage tank as shown above.