Interviewer instructions
Question 11: Type of gas used?
Piped gas is the answer if the dwelling is connected to the community gas network even if they do not use the gas neither for heating nor for cooking.
The dwelling where the gas is supplied from a jumbo gas-bag installed on the parcel of the house must not be regarded as supplied with piped gas. These dwellings will be classified as using bottle-gas.
Dwelling supplied with bottle gas is the dwelling where the energy is supplied by butane gas filled into gas-cylinders.
If there are alternative sources for gas supply, the one listed the first should be underlined.
E.g. if the dwelling is connected to the community gas network and at the same time the inhabitants are using bottle gas as well the correct marking is "piped gas".