Housing conditions and energy efficiency
Households by main heating system by income quintile per unit of consumption.
Unidades: NA

	Central heating	Individual heating	Non-fixed heating system	Other	Does not use any heating system	Not specified	
Total	8,9	55,1	17,2	0,9	15,7	2,3	
First quintile	5,4	42,9	24,2	0,6	25,5	1,5	
Second quintile	6	50,4	20,4	0,8	20,3	2,1	
Third quintile	7,9	54,6	17,9	0,9	16,3	2,5	
Fourth quintile	10,9	60,5	15,5	1	9,7	2,5	
Fifth quintile	13,9	66,7	8,6	1,1	7	2,6	
Notas:
Income per unit of consumption is obtained, for each household, by dividing total household income by the number of units of consumption. The distribution of persons is taken.
Fuente: Instituto Nacional de Estadística