During the first heating season, you will probably notice moisture condensation on your windows, and other surfaces directly exposed to outside air.
Condensation in new homes is generally not serious but is at its maximum during the first heating season. When your home was built, literally gallons of water went into it...into the concrete, the lumber, the tile work, the paint and so on. When your heating system is put into operation for the first time, it tends to draw moisture out of the lumber, masonry and other construction materials. When the moisture laden air comes in contact with a cold surface, especially window glass, condensation occurs. It is important that this moisture be wiped away from the windows to prevent permanent damage to the window sash and finish. Generally, during your second heating season, your home will have "cured" to the extent condensation will no longer be a problem. The amount of condensation will depend a great deal upon your living habits, such as the amount of cooking, bathing, washing, etc., that is done in the home.
Do not let the condensation disturb you, but see that ventilation is provided when ever possible to bring this normal drying-out process to its conclusion as steadily as possible. It is desirable to have outside venting for kitchen, bath and utility areas. Do not, however, try to accelerate the process by creating extremely high heating temperature; it will only lead to an uneven drying which will exaggerate the effect of normal shrinkage.