If you need to replace windows due to age or other factors, then it is wise to look to "meteorologically correct windows." These tend to be double or triple glazed (one or more air layers sandwiched between glass panes) to lessen conduction and have reflective coatings. Reflective coatings are primarily needed for southern facing windows.But, if your windows are still functional, give some thought to putting some reflective material on the windows. It will also offer privacy while still allowing you to look out, almost as though there was not reflective material present.


https://gofreshnup.com/energy-cube-system-review/