
Argon vs Krypton Window Gas Fills
The Pocono counties sit in ENERGY STAR’s colder Northern zone, which requires a U-factor of 0.22 or lower under Version 7.0. Meeting that target generally requires triple-pane glass, where krypton or an argon-krypton blend performs best inside the narrow cavities. In the milder Philadelphia suburbs and South Jersey, a low-E argon double-pane window meets the 0.25 requirement cost-effectively.






