20–30% reduction in heating and cooling costs is typical when replacing single-pane or aluminum-frame windows with modern vinyl double-pane Low-E.
25–30+ years. The vinyl frame itself doesn't degrade — the glass seal is typically the limiting factor, and quality manufacturers warranty it for 25 years.
Yes. We do full-frame or insert installations depending on the condition of your existing window framing. Both methods are properly insulated and sealed.