Survey on Households and the Environment Classification by characteristics of the reference person Percentage of dwellings with thermostat heating or air-conditioning, by level of studies completed by the reference person and average room temperature programmed during the day Units: % over the total number of dwellings ;Availability of thermostat heating;Average temperature of heating during the day;Availability of air-conditioning;Average temperature of air-conditioning during the day; TOTAL;48.7;21.3;35.5;22.3; Without studies;29.1;21.4;23.5;22.5; Primary education or the equivalent;48.0;21.1;30.7;22.4; Stage one secondary education;40.7;21.8;44.2;22.5; Upper-secondary education;54.9;21.4;37.0;22.1; Intermediate level-professional education;56.0;21.5;42.1;22.2; Higher level -professional education;59.0;21.0;37.6;22.2; 1st cycle university studies;61.4;21.6;43.7;22.3; 2nd or 3rd cycle university studies;62.2;21.3;43.4;22.3; Does not know/ Does not answer;96.7;20.0;21.9;24.0; Notes: Source: National Statistics Institute