Housing conditions and energy efficiency Households according to whether they have an adequate temperature in the housing in cold months or in summer, by tenure status of the housing. Unidades: Percentages. Not warm enough during the cold months Not cool enough during the summer Total 27,5 33,6 Property 24,6 31,3 Lease at market price 36,9 42,6 Lease below market price 40,9 45,1 Free assignment 32 33,9 Notas: Fuente: Instituto Nacional de Estadística