Survey on Households and the Environment 
Classification by characteristics of the dwelling
Percentage of dwellings that have changed or decided to change heating system in the next 12 months, by size of dwelling (number of habitants) and reasons for choosing the new system
Units: % over the total number of dwellings

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