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