Hi all! My home is only a little over 3 years old and it is a newly constructed home. I noticed during our second winter here that in 3 rooms there is a very cold draft coming through. One is the single window in a bedroom and the other is a 3 window set in my living area. It is most uncomfortable but I am now sure of what to do or who to call to help with this issue. Note! the windows are the double pane type that can only be opened from the interior of the home. Thank you.