Housing conditions and energy efficiency Households according to whether they have an adequate temperature in the housing in cold months or in summer, by degree of urbanization. Unidades: Percentages. ,Not warm enough during the cold months,Not cool enough during the summer, Total,27,5,33,6, Densely populated area,27,7,36,9, Intermediately populated area,28,3,31,9, Scarcely populated area,24,9,24,7, Notas: Fuente: Instituto Nacional de Estadística