Copyright 2005 Lone Star Windows Inc.
Single pane aluminum windows can be responsible for losing as much as 40% of a home's heating during winter and up to 60% of its cooling during summer. If your windows are more than 20 years old, the percentages could be even higher.
There are 4 major elements to energy efficiency:
1. Frames which do not conduct energy
2. High performance glass package
3. Quality manufactured frame and sashes
4. Proper installation and insulation
