It usually takes less than an hour to install a window, but it can vary depending on the size and type of window. Window installation involves removing the old window and installing the new window in its place. The process is generally quite simple, but it's important to make sure that the window is installed correctly so that it seals properly and doesn't let in moisture or cold air.

It depends on the window and the installation. A standard, single-pane window without trim can be installed in under an hour. And a double-pane window with trim can take a few hours. But every installation is different, so it's best to contact a professional to get an estimate.