Replacement window installation costs range from $400 to $1,200 per window, depending on the type of window and its size. Vinyl replacement windows are the most affordable, while wood and fiberglass cost more. Installation can add $100 to $300 per window, with larger or more complex jobs raising the price. Energy-efficient models may cost more but offer long-term savings.

The cost of installing replacement windows depends on the window’s material, size, and energy efficiency. Vinyl is the most cost-effective, while wood or fiberglass windows are more expensive but offer superior durability and style. Installing energy-efficient replacement windows can reduce energy costs over time. A professional installation ensures that the windows are properly sealed and fitted, preventing drafts and air leaks, which can lead to higher energy bills.