The diagram reveals how air circulation in a house and how home loses heat. At the first glance, it can be seen that the heat is lost from a room than can stimulate air leaking out and leaking into the house. In any case, some heat is transmitted through the area of room.
According to the diagram, air leaks into the house from several outdoors. Windows, ventilation and doors are the main access of it. However, electric outlet is the main factors which carry out the heat. Another source is found from crawl space and outdoor faucet in the south east of first floor which only produces a small quantity of air. Next, the infiltration comes from home appliance which consists of dryer van and kitchen fan vent. It can also allow air to permeate and to supply a great deal of air into spaces room.
Furthermore, air circulation from inside can be circulated through different locations on the ceiling. The air way out to the outside through attic hatch, and also the air from kitchen fan vent is released from the recessed lights which are alongside the ceiling bottom. Plumbing stack vent is the other equipment in order to discharge the heat air to leave on house.