Housing conditions and energy efficiency Households according to whether they have made improvements to thermal insulation or the heating system, by type of household. 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, Single men under 65 years old,12,2,59,6,28,3, Single woman under 65 years old,12,1,55,1,32,8, Single man aged 65 or over,11,9,63,2,25, Single woman aged 65 or over,13,4,60,5,26,1, Single adult with dependent children,12,55,2,32,8, Two adults, both under 65 years old,14,3,59,9,25,8, Two adults, at least one aged 65 years or more,14,8,63,7,21,5, Two or more adults with dependent children,15,1,62,7,22,2, Other types of households/Not specified,15,2,58,4,26,4, Notas: A dependent child is understood to be all those under the age of 18 and economically inactive persons between the ages of 18 and 24 for whom at least one of their parents is a member of the household. Fuente: Instituto Nacional de Estadística