I have a two story colonial style house with a garage on one end and family room on the opposite side of the house. the house is 24 years old, and I helped to build my house. This has been an on-going problem since I moved in. The family room is usually 7 to 10 degrees cooler than the other rooms on the first floor, ie kitchen, eating area, dining room and living room. Attached to the family room is a add on 16x16 room that we use as a computer room and sitting room. When we sit in the family room you can feel cold air coming from somewhere. I have used candles to determine the whereabouts without success. Under the family room is a full unfinished basement. Under the room addition is a craw space. The floor is insulated. What can I do to resolve this problem Who can I contact that would know how to idenitfy the problem? What are your suggestions?