Monobloc machines used to heat the water, as needed, through heat exchange with the refrigerant. The water coming out of these units will subsequently fuelled the terminal unit (fan coil system or on the floor), located within premises, for heating the same.
Heat pumps can be cooled with outdoor air, and with water from a well or cooling tower.
 
For more information:
 
- Air cooled heat pumps
 
- Water cooled heat pumps