Window sashes are the movable panels in a window, and yes, they can be replaced without too much trouble. However, it's important to make sure that the new sashes fit properly and are sealed correctly so that the window functions as it should. If you're not comfortable doing this type of work yourself, it may be best to hire a professional to do it for you.

I think my window sash needs replacement. Can you replace the window sash? Window sashes can be replaced by a professional if they are damaged or need to be updated.