Why Does Window Condensation Form?
Condensation forms on a window surface when the temperature (°F) of that surface is less than its dew point temperature. High humidity, both outside and inside, can exacerbate this issue.
How New York Sash Windows Minimize Condensation
Installing windows made with the best components will keep your windows from having as little condensation and as efficient as possible. New York Sash replacement windows with low-e and argon/krypton glass achieve some of the best thermal performance numbers in the industry. This superior performance is still only one component that works to minimize condensation. We also provide multiple-glazed glass, warm edge spacers, and vinyl frames. Our windows are designed to maximize energy efficiency and minimize condensation.
Common Causes of Temporary Window Condensation
All homes will, on occasion, have temporary condensation which is a result of one of these occurrences:
- New construction or remodeling: Building materials contain a great deal of moisture. As soon as heat is turned on, this moisture will flow into the air and settle on windows. This will disappear following the heating season.
- Humid summers: Houses absorb moisture during humid summers, and this will be apparent during the first few weeks of heating. Then the house should dry out.
- Sudden temperature drops: Sharp and sudden drops in temperature, especially during the heating season, will create temporary condensation problems.
How to Reduce Condensation in Your Home
Homeowners may need to decrease the humidity level in the home in order to eliminate the formation of condensation. During the winter months, keeping a 25 °F to 35 °F relative humidity will help. Ventilation is also a very effective way of removing excess moisture from the air.
Important Note: Windows Don’t *Cause* Condensation
You must remember that windows do not cause condensation, and therefore, windows cannot cure condensation. However, insulated windows should help relieve the situation by maintaining a warmer surface temperature.
The U-Factor and Condensation Resistance
To increase the resistance of windows to the formation of condensation, it is important to maintain the surface temperature of the window above the dew point. To accomplish this, manufacturers must reduce the amount of heat that transfers through a window, which is called the thermal transmittance or U-factor of the overall window product. The higher the U-factor of a window, the higher the potential that condensation will form on a surface of the window unit. New York Sash windows are designed with low U-factors to minimize heat transfer and condensation.
New York Sash replacement windows are designed to minimize condensation by incorporating advanced features like low-e glass, argon/krypton gas fills, multiple-glazed panes, and warm edge spacers. These components work together to improve thermal performance, reduce heat transfer, and maintain warmer window surfaces, making condensation less likely to form.
To further reduce condensation, consider controlling indoor humidity levels through proper ventilation and dehumidification, especially during colder months. Remember, windows don’t cause condensation—they simply reflect the conditions in your home. By choosing high-performance windows and managing your home’s humidity, you can enjoy clearer views, improved energy efficiency, and a healthier living environment.
If foggy windows persist, it may be time to evaluate your home’s ventilation, insulation, or window quality. New York Sash is here to help you find the right solutions to keep your windows clear and your home comfortable year-round. Let’s clear things up—starting with your windows!
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