When you see the ENERGY STAR label on a window product, you know that it's one of the most efficient
in its category, and that its energy rating has been certified by an accredited independent laboratory.
All-season comfort!
ENERGY STAR qualified windows or patio doors make your house more comfortable, because they feature
- better airtightness;
- double or triple glazing with a sealed insulating glass unit;
- inert gas, such as argon or krypton, between the layers of glass;
- low emissivity, or low-e, glass;
- spacers with low thermal conductivity.
What does low-e glass do?
It keeps the heat inside during winter and outside during summer.

Make the energy-efficient choice!
Remember that up to 25% of home heat loss is through windows and patio doors.
For your comfort and savings, choose ENERGY STAR qualified products!
For more details, visit:
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