Table 1.

Characteristics of the residential buildings in the study

Building ID	Construction year	Floors (n)	Floor area (m2)	Building material	Ventilation type	Energy consumption (kWh/m3/year)
1	1969	3	1356	Concrete	Mechanicala	44.0
2	1955	7	2750	Brick	Mechanical	48.1
3	1982	3	3587	Concrete	Mechanical	39.3
4	1997	6	2094	Concrete	Mechanical	37.2
5	1964	6	2548	Concrete	Naturalb	45.2
6	1974	3	1000	Brick	Natural	54.3
7	1974	5	3270	Brick	Natural	36.2
8	1974	3	1000	Brick	Mechanical	54.3
9	1988	5	1478	Concrete	Mechanical	48.0
10	1962	3	1023	Concrete	Mechanical	45.5
11	2008	8	3819	Concrete	Mechanical	23.2
12	1983	2	2789	Concrete	Natural	50.9
13	1983	2	1200	Concrete	Mechanical	44.7
14	1985	2	1200	Concrete	Mechanical	44.7

Energy consumption is that of the year 2016

^aMechanical, mechanical exhaust ventilation. ^bNatural, natural ventilation