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What is a U-factor?

U-Factor measures the heat transfer through a window and tells you how well the product insulates. The lower the U-Factor, the greater resistance to heat flow and the better insulation it offers.

What is a Solar Heat Gain Coefficient?

Solar Heat Gain Coefficient lets you know how well the a window blocks the heat from the sun. A lower amount of solar heat transmitted, the lower the SHGC is.

What is Visible Transmittance?

The Visible Transmittance number indicates the amount of light that passes through the glass (refers to brightness, as opposed to heat). A higher number means a brighter room

Wallside Windows

Fact: 1-800-HANSONS Triple Pane Windows Outperform Wallside Windows by More Than 30%*

Federal Law now requires all windows to display their energy performance rating given by the National Fenestration Rating Council (NFRC). This is great for Hansons windows; our ratings trump the competition. See for yourself - the numbers don't lie!

Not only can you get the best replacement windows from Hansons, but the rest of your home improvement needs as well: Roofing, Siding, Gutters and Gutter Guards. Can Wallside Windows say that!

Get a FREE Home Improvement Buyers' Guide (including Window Shopping Checklist) when you schedule an appointment with Hansons.

*When measuring U-factor

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