The purpose of this research is to found the impact of built area and occupant number on winter gas
consumption in the residential building sector of Iran, Shiraz.Sothe annually and monthly gas consumption data through
19 houses were analyzed to achieve the heating energy consumption and operation month.The average operation
months of gas heating consumption were from first of November up to end of April and the average maximum monthly
gas consumption of sample houses was in February. On the other hand, the case study houses have different built
area from 80 t0 200 m2andoccupant number from 3 to 7 persons.It was concluded that the biggest and busiest houses
did not consume the maximum annual gas consumption and so the smallest and low occupant ones about minimum
consumption. Therefore, the samples heating consumption was not so related to the built area and occupant number.
The occupant culture and behavior was more supposed to be related with energy consumption in residential sector of
the city.