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Energy Efficient Windows | Glass Doctor of Seattle
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Want to save up to $600 on your
energy bills?

It’s easy to do with new energy efficient windows.

We are committed to the environment, and continually test our products and educate customers on how to release fewer emissions. Almost every replacement window Seattle Glass Doctor sells meets ENERGY STAR guidelines with Low-E insulated glass.

By switching your windows to ENERGY STAR rated replacements, you can slash your energy bills by up to 30% – that’s $600 annually! U.S. residents have saved over $16 billion on utility bills, and cut their greenhouse gas emissions by an amount equal to that of 27 million vehicles.

ENERGY STAR rated windows installed by Glass Doctor of Seattle may also qualify for up to $200 in federal tax credits. For more information about how Glass Doctor of Seattle can help you save money on your energy bill, call on of our representatives today.

To be ENERGY STAR rated, windows must meet these stringent standards:

  • U-Factor less than or equal to 0.30 or 0.32 Solar Heat Gain Coefficient (SHGC) of greater than or equal to 0.40
  • South-facing Western Washington windows ideally have a higher solar heat gain coefficient (SHGC) and a lower U-factor in order to decrease heat loss.
  • East and West (West especially due to summer sun) facing windows should be shaded or have a lower SHGC
  • Windows facing the North get little direct sun, making SHGC of less importance. A low U-factor is ideal for North windows to lower heat loss.

Energy Saving Basics

Other than the window itself, there are a few things you can do to help keep your home energy efficient all year long. Shades on you windows will help keep the heat out in the summer and the heat in in the winter. You can also ensure that your roof overhangs are properly sized, helping to conserve your home’s energy.

For more ideas on how to raise your home’s energy efficiency, visit


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