Installing replacement vinyl windows involves removing the old window, preparing the opening, and fitting the new vinyl window. First, measure the opening to ensure the correct size. Remove the old window, apply caulking around the edges, insert the vinyl window, and secure it with screws. Finish by sealing the window frame with caulk to prevent drafts and leaks.

Installing vinyl windows requires accurate measurements, removal of the old window, and sealing the new window to ensure energy efficiency. Proper caulking and securing the window with screws are essential steps to prevent drafts and water damage.