Our many years of experience allow us to easily know the needs of each and every one of our clients. We can assist in helping you choose the perfect window or door plan to fit your personal and home needs. We do not limit you to stock sizes – all of our products are custom made at our factory in Edmonton. Qualitech Windows MFG has all the state of the art extrusion and fusion welded window machinery to manufacture new energy efficient vinyl windows engineered for the cold prairie winters and warm summers.