Size of dwelling (number of habitants)	Heating system change and reasons for the new system	Total
TOTAL	Have changed the heating system or decided to change it	1.8
TOTAL	Cost of installation	17.8
TOTAL	Savings in the bill (*)	44.0
TOTAL	It uses less energy / it is more efficient (*)	34.3
TOTAL	Convenience (*)	48.1
TOTAL	Environmental considerations (*)	19.4
TOTAL	Aesthetics (*)	7.4
TOTAL	Subsidies / financial incentives (*)	5.7
TOTAL	Recommended by an expert / friend (*)	22.4
Dwelling with 1 person	Have changed the heating system or decided to change it	1.0
Dwelling with 1 person	Cost of installation	19.5
Dwelling with 1 person	Savings in the bill (*)	36.5
Dwelling with 1 person	It uses less energy / it is more efficient (*)	27.0
Dwelling with 1 person	Convenience (*)	35.7
Dwelling with 1 person	Environmental considerations (*)	20.6
Dwelling with 1 person	Aesthetics (*)	3.7
Dwelling with 1 person	Subsidies / financial incentives (*)	8.6
Dwelling with 1 person	Recommended by an expert / friend (*)	21.1
Dwelling with 2 person	Have changed the heating system or decided to change it	1.9
Dwelling with 2 person	Cost of installation	18.1
Dwelling with 2 person	Savings in the bill (*)	45.3
Dwelling with 2 person	It uses less energy / it is more efficient (*)	39.8
Dwelling with 2 person	Convenience (*)	49.5
Dwelling with 2 person	Environmental considerations (*)	23.1
Dwelling with 2 person	Aesthetics (*)	9.7
Dwelling with 2 person	Subsidies / financial incentives (*)	4.5
Dwelling with 2 person	Recommended by an expert / friend (*)	28.0
Dwelling with 3 person	Have changed the heating system or decided to change it	1.8
Dwelling with 3 person	Cost of installation	16.0
Dwelling with 3 person	Savings in the bill (*)	39.8
Dwelling with 3 person	It uses less energy / it is more efficient (*)	33.7
Dwelling with 3 person	Convenience (*)	49.7
Dwelling with 3 person	Environmental considerations (*)	17.6
Dwelling with 3 person	Aesthetics (*)	7.2
Dwelling with 3 person	Subsidies / financial incentives (*)	4.5
Dwelling with 3 person	Recommended by an expert / friend (*)	12.5
Dwelling with 4 or more person	Have changed the heating system or decided to change it	2.1
Dwelling with 4 or more person	Cost of installation	18.2
Dwelling with 4 or more person	Savings in the bill (*)	48.0
Dwelling with 4 or more person	It uses less energy / it is more efficient (*)	31.9
Dwelling with 4 or more person	Convenience (*)	49.7
Dwelling with 4 or more person	Environmental considerations (*)	16.9
Dwelling with 4 or more person	Aesthetics (*)	6.6
Dwelling with 4 or more person	Subsidies / financial incentives (*)	6.7
Dwelling with 4 or more person	Recommended by an expert / friend (*)	24.8