[serene911]

One of the big downsides of the national companies, Anderson and Pella specifically is the way they install the glass units into the frames. All insulated glass units will eventually fail. Milgard and many
other companies install their glass into the frame with glazing tape and then snap bead which also
secures the glass into the frame. When the unit fails any local glass company/glazier can easily
replace the failed unit in a reasonable amount of time. Pella and Anderson like to install the glass
units in a way that forces you to call them only, and then to sell you a full new frame when all you need is the glass. An anology , If you get a crack in your car windshield, the frames are designed
so the glass can be easily removed and new windshield installed. You do not need to buy a new car. Some glass companies intentionally glue the glass in so they cannot be easily replaced. It's
a way to force the customer into using them only at a much greater expense. In other words. to screw you.