The diagram illustrates the information about how air regulation in a house that air flows inside and heat flows outside caused by air leaks and heat loss in a house. Overall, the biggest air leaking which is flow into the house comes from main room and the highest air leaking that flow out of house comes from bathroom.
Based on the diagram, there are some rooms that result air leaking out of the house, such as bathroom, bedroom and kitchen. The most of heat loss comes from bathroom which caused by recessed lamps. Kitchen is the second highest that loss heat causes by hidden lights. The lowest of heat loss is from the bedroom.
The main bedroom has much air that flows inside through the ventilation and door. Kitchen and laundry room which have air lower than bedroom that getting fresh air from the vent and window. Then, the least air fresh that leaks into the house comes from the bathroom which air getting inside through electrical outlet.