Survey on Households and the Environment Classification by characteristics of the dwelling Percentage of dwellings with heating, by Autonomous Community of residence and number of rooms with heating and months of using heating Units: % over the total number of dwellings ,With heating,Heating in all or in the majority of rooms (*),Heating only in part of the rooms (*),Use of heating less than month (*),Use of heating between one and three months (*),Use of heating between three and six months (*),Use of heating between six months or more (*),Use of heating: Does not know / Does not answer (*), TOTAL NACIONAL,70.3,71.3,28.7,8.9,37.2,43.9,8.5,1.4, Andalucía,43.1,30.6,69.3,21.7,48.1,28.3,0.9,1.0, Aragón,92.0,92.3,7.7,1.3,16.6,69.9,10.8,1.4, Asturias (Principado de ),84.9,93.8,6.2,5.1,25.5,61.5,5.9,2.0, Balears (Illes),88.1,30.6,69.4,15.8,57.0,25.7,0.3,1.3, Canarias,2.7,28.3,71.7,37.3,53.7,9.0,..,.., Cantabria,76.9,94.1,5.9,8.4,53.9,32.6,3.4,1.7, Castilla y León,90.8,94.1,5.9,0.9,6.4,48.3,43.3,1.1, Castilla -La Mancha,86.2,88.0,12.0,0.5,12.0,82.7,4.5,0.3, Cataluña,76.0,76.0,24.0,11.1,45.8,38.1,2.8,2.2, Comunitat Valenciana,61.1,36.5,63.5,19.1,63.9,14.8,1.0,1.2, Extremadura,79.7,39.3,60.7,2.2,30.5,53.3,12.3,1.7, Galicia,59.9,91.1,8.9,4.8,27.0,58.5,9.1,0.7, Madrid (Comunidad de),90.4,92.6,7.4,2.7,31.7,54.1,9.0,2.6, Murcia (Región de),87.6,24.3,75.7,17.3,65.9,16.4,0.1,0.3, Navarra (Comunidad Foral de),94.6,93.3,6.7,1.9,11.2,60.4,25.3,1.2, País Vasco,89.9,85.7,14.3,5.7,38.6,46.2,9.5,.., Rioja (La),97.2,92.8,7.2,1.7,9.5,61.9,25.5,1.5, Ceuta and Melilla,20.6,38.5,61.5,82.1,5.8,10.0,2.2,.., Notes: 1) (*) over the total dwellings with heating Source: National Statistics Institute