Most homeowners see a 15% to 30% reduction in heating and cooling costs after replacing old single-pane windows with energy-efficient models, depending on the number of windows replaced and your home’s overall insulation.
Double or triple-pane windows with low-E coatings and vinyl or fiberglass frames perform best. Look for ENERGY STAR certified units with a U-factor of 0.30 or lower.
Most standard residential installations are completed in one to two days, depending on the number of windows and home layout.
Yes. Homes built before the 1990s typically have single-pane aluminum windows well below modern efficiency standards. Upgrading improves comfort, reduces energy costs, and adds resale value.