Homeowners with windows over 25 years old should consider restoring and rennovations before replacing them. New glass technology can be incorporated into many older windows and doors - but the "sales person" trying to sell you new window replacements is not going to talk about this. An older home is an ideal candidate for a window restoration and repairs, new insulated LowE 277 or 366 glass replacements, solar screens, new hardware service and replacements if windows are sealed or painted shut. Even new sash removal and replacements are cheaper than new units and more environmentally friendly. New Weather strip and glazing bead also will bring new life to older windows and doors.