Heating system: gas (all dwellings) id: 2

Dwelling heating system: gas (number of dwellings)

Heating system: oil (all dwellings) id: 3

Dwelling heating system: oil (number of dwellings)

Heating system: wood, wood pellets (all dwellings) id: 4

Dwelling heating system: wood, wood pellets (number of dwellings)

Heating system: biomass, biogas (all dwellings) id: 5

Dwelling heating system: biomass (without wood), biogas (number of dwellings)

Heating system: solar/geothermal energy, heat pumps (all dwellings) id: 6

Dwelling heating system: solar/geothermal energy, heat pumps (number of dwellings)

Heating system: electricity (all dwellings) id: 7

Dwelling heating system: electricity (excluding heat pumps) (number of dwellings)

Heating system: coal (all dwellings) id: 8

Dwelling heating system: coal (number of dwellings)

Heating system: various sources (all dwellings) id: 9

Dwelling heating system: district heating (various enery sources) (number of dwellings)

No heating system (all dwellings) id: 10

Dwelling heating system: no heating (number of dwellings)

Floor heating (all dwellings) id: 11

Dwelling heating system: floor heating (number of buildings)

Block heating (all dwellings) id: 12

Dwelling heating system: block heating (number of buildings)

Central heating (all dwellings) id: 13

Dwelling heating system: central heating (number of buildings)

Single or multi-room stoves heating (all dwellings) id: 14

Dwelling heating system: single or multi-room stoves (also night storage heating) (number of dwellings)