Housing conditions and energy efficiency
Households according to whether they have made improvements to thermal insulation or the heating system, by income quintile per unit of consumption.
Unidades: Horizontal percentages.

;Has made improvements to thermal insulation or the heating system;No improvements have been made and it is warm enough during the cold months;No improvements have been made and it is not warm enough during the cold months;
Total;14,1;60,8;25,1;
First quintile;9;54,6;36,4;
Second quintile;12;56,6;31,4;
Third quintile;13,5;60,9;25,6;
Fourth quintile;16;64,2;19,8;
Fifth quintile;19,9;67,3;12,8;
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