Literal question
Question 5: Is the dwelling mainly heated by...?
a) With remote and block heating, the dwellings of several buildings are heated from one central station. Central heating supplies the heat for the dwellings of one building only. With floor heating, the rooms of one dwelling are heated from a source which serves only the one particular dwelling.
b) In case of remote heating, always mark "remote heat."
Data on dwelling
Subtenants are not required to answer any further questions in the dwelling questionnaire
[Questions 2-10 were optional for subtenant occupants]
5a. Is the dwelling mainly heated by:
[] 1 Remote/block heating
[] 2 Central heating
[] 3 Floor-heating
[] 4 Single/multi-room stoves (also electric storage)