Storm Window Energy Efficiency

October 10, 2010

Depending on your climate, installing storm windows may be the most effective defense against the forces of weather. Even in milder climates, some homeowners install storm windows as replacement windows when their existing frames and glass wear out. Storm windows energy efficiency and durability can help reduce spiraling utility bills while providing security for your investment. What makes storm windows a good choice?

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Storm Windows and Energy Efficiency

Energy efficiency in a window product is measured by how the material stands up to wind, exterior temperatures, outside noise, solar rays, and how well it retains the desired temperatures inside your home. Simply adding storm windows above old and leaky single-paned windows will even have a positive effect on energy conservation. But the best solution is to install storm windows that come outfitted with low-E coatings and panels that resist damage from weather and would-be intruders.

Storm windows energy efficiency goes up with pyrolytic low-E coatings that increase performance and durability. Low-E coatings can almost double the energy savings in winter over clear storm windows. Mid-range priced storm windows can block solar heat gain from raising energy costs in the summer, and add thermal resistance to the loss of internal heat in winter.

Choosing Storm Windows

You'll have to decide whether to install interior or exterior storm windows. Interior storm windows require less maintenance since they're not exposed to outdoor conditions. But no matter your selection, the installation and fit of storm windows must be square and sealed properly if you hope to prevent moisture and energy leaks.


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