Housing conditions and energy efficiency
Households according to whether they have made improvements to thermal insulation or the heating system, by nationality of the reference person.
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	
Spanish	14,5	60,9	24,5	
Foreign (European Union)	11,6	65,4	23,1	
Foreign (rest of the world)	8,9	55,1	36	
Not specified	51,5	48,5	..	
Notas:
Fuente: Instituto Nacional de Estadística