Climatic classification of Italian municipalities
Italian communities are divided into six climate zones based on the Classificazione climatica . This is Legislative Decree No. 412 of the President Oscar Luigi Scalfaro of August 26, 1993 .
The name of the underlying law is: Ordinance with regulations on the planning, installation, operation and maintenance of building heating systems for the limitation of energy consumption, as implementation of Art. 4. Para. 4 of Act n.10 of 9. January 1991 . The over 8,000 Italian municipalities were divided into six climate zones using the table attached to the ordinance. For this purpose, a classification was made based on the gradi-giorno (GG) ( degree day numbers ). This measure is calculated from the sum of the temperature differences between the daily average outside temperature and the target inside temperature (set at 20 ° C) on all those days on which the outside temperature is below the heating limit (also set at 20 ° C).
The categorization established thereby defines the period in which it is allowed to switch on the building heating. It also defines the maximum heating time per day. In the event of proven emergencies, the mayors of the municipalities can extend the annual operating times and the daily heating times. Outside of these time periods, the heating systems may only be operated in the event of extreme weather conditions.
| Table of climatic zones | ||
| climate zone | Heating season | Maximum operating time per day |
|---|---|---|
| A. | December 1st - March 15th | 6 hours a day |
| B. | December 1st - March 31st | 8 hours a day |
| C. | November 15 - March 31 | 10 hours a day |
| D. | November 1st - April 15th | 12 hours a day |
| E. | October 15 - April 15 | 14 hours a day |
| F. | no restriction | no restriction |