Windows look great but i haven't seen the drop in electric bill like they promised. They said a 50% drop in utility bill. it's more like 10%. They installed them pretty quickly and did a good job except for one window. I have one window in my bathroom that wasn't sealed properly. Everytime i sit on the toilet, i can feel a cool or warm breeze, depending on the weather outside. I have yet to inform them but i hope once i do, they will correct the issue.