The HeizKG is mandatory for the allocation of supply costs in buildings and economic units with at least four objects of use that are supplied with heating, hot water or cooling by a common supply system and are equipped or are to be equipped with devices for determining the consumption shares.
If a common supply system provides heat for both heating and hot water, the supplier shall separate the supply costs for heating and hot water according to the heat consumption for heating on the one hand and for hot water on the other. This separation must be carried out according to the results of the measurement of the respective heat consumption using state-of-the-art equipment.
If this measurement is not possible for technical reasons, the following alternatives are available:
- (Computational) determination using a method that corresponds to the state of the art or
- Allocation of the shares of supply costs for heating and hot water in the ratio of 70 % for heating and 30 % for hot water (this ratio can be changed for subsequent billing periods by unanimous agreement with all customers in the range of at least 50 % and at most 70 % for heating).
The energy costs for heating and hot water are divided 65% according to the consumption shares and 35% according to the usable floor space supplied. This rate can also be changed for subsequent billing periods by unanimous agreement within the range of at least 55% to a maximum of 85% according to consumption shares.
The other operating costs, the remaining energy cost components and a price component (e.g. basic and metered price) for heating, hot water and cooling that is not billed by the supplier on the basis of consumption in the case of heat supplies (e.g. district heating) must be allocated according to the usable floor space of the properties supplied.
The usable floor space that can be supplied includes all rooms within the supplied usage objects (apartment/business) in square meters. Excluded from this are open loggias, terraces and balconies as well as parking spaces for motor vehicles, provided these are not supplied with heating or cooling by a common supply system.
A written statement of the total supply costs allocated to a billing period must be prepared no later than six months after the end of the billing period. We kindly ask you to return the cost statement (as well as the customer user list) to us in full and in good time.