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Technology3/20/2026
Energy-Saving Windows — How to Save up to 40%
Low-E glass, thermal spacers, and the right coefficients can cut your heating bills in half.
Why energy efficiency matters
Old windows lose 30–40% of heat in winter. Modern PVC fixes this.
Low-E glass
Mirror-like coating that reflects heat back. Uw < 1.0.
Thermal spacer
30% better insulation.
Argon filling
0.1 lower Uw than air.
Calculate savings
~100 m² apartment, gas heating:
- Old windows: ~120,000 ֏/winter
- Modern PVC: ~70,000 ֏/winter
Have questions about your windows?
+374 96 11 11 65