Literal question
4.2 Indicate the type of fuel or power that feeds the heating system in the dwelling (more than one answer is possible)
[] 1 Methane, natural gas
[] 2 Diesel
[] 3 Liquid propane gas
[] 4 Wood
[] 5 Electricity
[] 6 Fuel oil
[] 7 Coal
[] 8 Solar energy
[] 9 Other types of fuel or energy
Interviewer instructions
Question 4.2 (more than one answer is possible)
Specify the type of fuel or energy used to operate the heating system when the system is on. If the house is heated by remote heating or heat pumps, place a cross in box 9.