The primary cause of condensation on a window or patio-door, is excess moisture in the air.
While your windows do not cause condensation, the glass is an indicator of excess moisture. Condensation is the visible result of excess moisture in the air.
Condensation occurs when warm, moisture-laden air comes into contact with a colder surface such as glass. The air temperature in contact with the colder surface suddenly drops, reducing the amount of moisture it can hold. This results in moisture formation, or condensation, occurring on the cold surface.
Drapes and other window coverings don’t cause window condensation, but they can contribute to the problem by restricting the flow of warm room air over the glass surface.
Household activities such as cooking, breathing, perspiration, showers, washing dishes, mopping floors, laundry, etc., all add moisture to the air. Daily living activities of a family of four can add more than 18 gallons of water a week into the air in their home.
Single Pane Glass has the highest probability of condensation formation. Dual Pane is less likely, as the air space between the panes keeps more of the cold air away from the internal pane of glass. While the addition of Argon Gas, offer one of the highest protection against the cold, it is not typically necessary in our area. Triple Pane Glass is the highest rated, but again, not necessary in our area, unless you are also looking for noise reduction.