Hurd windows

I have about 40 Hurd windows which were installed in 1997 when the house was built. So many of them have fogged, are difficult to open (need muscles) or so easy to open that they fall down. All the springs on the sides in upper corners are sticking out and the current company could care less about my situation. A couple of my case windows have to be closed by going outside to push them in all they way so that that can lock. I am SO disappointed with this company and how they've handled my problem. Will never recommend them. When you call the company they say that the holding company that bought out Hurd Windows and Doors aren't responsible for any warranty on the windows....joy!