How much does it cost to replace all the windows in a house?

Replacing all the windows in an average 2,000 sqft home costs $7,500–$22,000 in 2026, depending on window count (typically 10–20), material (vinyl is cheapest at $400–$800/window installed; fiberglass $700–$1,400; wood $900–$2,500), and glass package. Impact / hurricane-rated windows in coastal counties add 30–60% on top. ENERGY STAR-rated windows qualify for the federal 25C credit (30% up to $600/year). Whole-house replacement typically takes 1–3 days for a 12-window job.