Meier-Wiechert G.
Bibliographic info:
HLH 6/2003, pp 35-39, 7 Fig., in German

The article describes the advantages of heating designed as a system. It shows (among others) the features of balanced ventilation systems with heat recovery and compact ventilation appliances (heat recovery from ventilation exhaust air through a heat exchanger and a heat pump, to provide warm fresh air and domestic hot water).