Window Replacement Calculator

A standard vinyl double-hung window typically costs $650-$1,300 installed in 2026, covering roughly 70% of US replacements. Fiberglass runs about 25-45% more than vinyl, and wood or clad-wood frames run roughly 60-130% more, mainly due to material and installation labor differences.

Vinyl is the cheapest and most common because it's low-maintenance and doesn't need painting. Wood offers a classic look but needs more upkeep and costs significantly more; fiberglass sits in between, offering better durability and insulation than vinyl at a moderate premium.

Yes — larger windows, bay/bow windows, and custom shapes cost more than a standard-size double-hung window. This calculator uses a flat per-window price, so adjust the price field upward for larger or custom windows.

Yes — this gives a ballpark estimate using national averages. Get quotes from local contractors for an exact price, since labor rates, permit requirements, and window brand all vary by region and project.

No — the federal Energy Efficient Home Improvement Credit (Section 25C), which previously covered 30% of ENERGY STAR window costs up to $600, was repealed effective January 1, 2026 under the One Big Beautiful Bill Act. It only applies to windows purchased and installed by December 31, 2025. For 2026 installations, check for state, local, or utility-company rebates instead — some are still available even without the federal credit.