Central heating systems

A central heating system heats more than one dwelling (generally all dwellings). In multi-dwelling developments, BASIX recognises the following types of central heating systems.

Fan coil and heated water

Dwelling heating unit(s) contain fan and heating coil (typically integrated with cooling fan coil unit); medium temperature (typically 60-80oC) heating water is piped from central heating plant)  

Fan coil and electric resistance

Heating provided by electric resistance elements located in the dwelling cooling unit or ductwork

Radiators and heated water

Dwelling heating provided by radiators; medium temperature (typically 60-80oC) heating water that is piped from central heating plant

Water source packaged units and heated water

Dwelling air conditioning unit(s) contain fan, cooling coil and compressor; heat is extracted from low temperature (typically 20-30oC) water piped from central heating plant

Water source packaged units and electric resistance

Heating provided by electric resistance elements located in the dwelling cooling unit or ductwork 

Variable refrigerant volume units

Dwelling air conditioning unit(s) contain fan and heating coils; hot refrigerant gas is piped from central compressors and heat source plant.