A device that provides thermal comfort to building occupants by distributing heat to common portions or private portions, using multiple apparatus powered by a single energy source (electricity, gas, etc.). In addition, this device sometimes produces domestic hot water. In divided co-ownership, the central heating system is presumed to be a common portion when it is part of the common equipment and apparatus, even if it passes by the means of ducts, through a private portion. It is therefore the responsibility of the syndicate of co-owners to ensure its maintenance and preservation.