Table 3: Description of occupancy behavior, use of heating appliances and perceived comfort based on unstructured interviews (social drivers).

Case Studies		No of People	Description According to Conditions of Use
			Occupancy Patterns /Behavioral Aspects
H	H1	4	Food cooking and heating is carried out by gas and/or microware oven in a multi-purpose room. The owner take showers in the bathroom located inside the multipurpose room, causing the temperature to rise during several days of the monitored period.
	H2	1	The owner is a retired woman, who spends most of the time at home (having other requirements). She lives alone during the week, and in sporadic weekends her two granddaugthers sleep in the bedroom. During weekdays, this room serves as a gym from 10 at 12am. A 5000 K cal gas heater located in the living-room runs 6 h on maximun and 18 h to a minimum. While the 3000 k cal gas heater of the hall runs 6 h on maximum and 4 h to a minimum and stays 14 h on pilot.
	H3	2	Both the daily consumption of gas and electricity is low. The rational use of energy is linked not to the level of income of the user, but to the idiosyncrasies of them, who demostrated to live comfortably under these conditions.
	H4	2	A 2300 Frig Air split conditioner located in the bedroom whose outdoor wall faces east has an average daily use in summer of approximately 1 h. The dwelling is inhabited by two elderly, retired and sedentary women. A halogen heater located in the living room is operated daily for 2h.
	H5	2	A natural gas heater (4000 Kcal/h) installed between the corridor and the bathroom, was always on during the monitoring period. The dweller reported the following gas consumption schedule: (a) bumers (hotplates): 2 h/day: 2000 Kcal (b) oven: 1 h/day: 4000 kcal, (c) water heater: 0.5 h/day: 2500 kcal, and (d) air heater to maximum power: 24 h/day: 108,000 Kcal.
B	126	1	The owner is a retired woman, who lives there since the blocks were inaugurated (end of the 60s). The apartment has a gas heater (6000 Kcal) in the dining room which is turned off in the absence of the owner. The heater is on for 6 h a day from 10 am. The dining-room is mostly used as a workplace, computer room and reading area.
		2	The apartment has a 6000 Kcal gas heater in the dining-room, which is kept on during 6 h a day to the minimum. The heater is swicted off when it is no occupied.
		1	The owner, an elderly woman, lives there since the end of the 60s when the blocks were inaugurated. The apartment has two gas heaters, one in the dining room and the other in the internal bedroom. The bedroom heater is on for about 6 h a day and the one in the dining room is on for about 4 h a day from 10pm.
	374	2	The apartment does not have a gas heater. The dweller uses a 1200W oscillating halogen heater (three levels = 400-800-1200) that is turned on during 1 h in the morning and between 9 pm and 2 am approximately in the evening/night).
T	A	-	Not Monitored.
	B	4	This apartment is occuped by a standard family with a couple and two kids.
	C	1	The owner is a single middle aged man.
	D	1	Thw owner is a retired woman who lives alone.
	E	2	The apartment was not occupied until July 18 at midday. From that moment onwards, heaters were turned on, increasing the indoor temperature to 25 C; the temperature did not go beyond 22.°C nor under 17 °C. The effect of tuming the heater on during night is noticeable, which, on average, increases the indoor temperature by 2.5 °C.