Energy Efficiency
#1 for energy efficiency among top national brands.1
Designer Series® windows and patio doors are the only Pella products available with triple-pane glass. The combination of Low-E insulating glass with argon plus the exclusive glass panel meet ENERGY STAR® guidelines and helps save nearly one-third on your heating and cooling bills.2
1Pella Designer Series windows and patio doors with triple-pane glass have superior NFRC U-values and SHGC ratings.
2Computer simulation average compared to single-pane wood windows. Actual results may vary.
Learn more about ENERGY STAR® requirements.
Some Pella products may not meet ENERGY STAR guidelines in Canada. For more information, contact your local Pella sales representative or go to energystar.gc.ca.