Survey on Households and the Environment 
Classification by characteristics of the reference person
Percentage of dwellings with thermal insulation or energy-saving lights, by level of studies completed by the reference person and type of insulation or lighting
Units: %  over the total number of dwellings

,With some type of thermal insulation,Canopies,Persian blinds or shutters,Tinted glass or solar protectors,Double glazing for windows,Thermal bridge breaking,With some type of energy-saving lights,Fluorescent tubes or lights,Other energy-saving lightbulbs,
TOTAL,96.2,23.0,94.0,4.1,39.3,11.4,85.5,66.1,67.1,
Without studies,93.3,17.1,91.8,2.1,19.0,4.9,69.0,55.9,41.1,
Primary education or the equivalent,96.0,21.2,94.1,3.7,37.1,9.1,86.1,70.1,63.5,
Stage one secondary education,96.8,23.5,95.2,4.3,35.4,8.5,84.4,63.0,68.6,
Upper-secondary education,95.8,26.2,93.4,4.2,43.2,12.2,89.0,66.9,74.3,
Intermediate level-professional education,97.2,21.4,95.5,5.3,48.9,14.2,90.7,71.1,76.1,
Higher level -professional education,97.3,25.1,94.6,5.1,50.5,19.7,94.5,69.4,80.9,
1st cycle university studies,97.5,27.8,94.6,5.8,51.9,17.8,91.6,68.6,79.5,
2nd or 3rd cycle university studies,98.4,28.6,94.9,5.1,53.9,19.5,92.1,65.9,82.3,
Does not know/ Does not answer,100.0,.,96.7,.,53.1,.,49.8,49.8,27.9,
Notes:

.Data protected by statistical secrecy

Source: National Statistics Institute