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Understanding Window Specifications: Making an Informed Choice with Dual Action Windows

Updated: Apr 23

When shopping for windows, it's crucial to understand technical specifications like U-Value, SHGC (Solar Heat Gain Coefficient), and VT (Visible Transmittance). These factors significantly impact your home’s comfort, energy efficiency, and natural light.


U-Value: The Key to Insulation

U-Value measures a window's ability to prevent heat escape. Dual Action Windows offers options with U-Values as low as 0.14, surpassing the typical Energy Star ratings of 0.20-1.20. A lower U-Value means better insulation, leading to energy savings.


SHGC: Tailored for Your Climate

SHGC indicates how much solar heat passes through a window. A higher SHGC is beneficial in colder climates as it helps harness solar heat, reducing heating costs. Conversely, in warmer climates, a lower SHGC is preferable to keep interiors cool and reduce air conditioning needs.



VT: Brighten Up Your Space

VT measures how much natural light penetrates through the window. Higher VT values ensure more daylight and a brighter interior.


With over 150 glazing options, Dual Action Windows lets you choose the right U-Value, SHGC, and VT for your specific climate needs, ensuring comfort, energy efficiency, and ample natural light in your home.


Explore our range at Dual Action Windows for windows that perfectly fit your climatic conditions and personal style.



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