Drafts — no. In the preparation of housing for the winter the first step in city apartments is the sealing of Windows and doors. The simplest solution for Windows is pozatykat cracks and seal them with paper tape. Of course, this measure makes it impossible to open the window for the entire winter, but reduces heat loss.
Ventilation can also produce through the balcony door or specially left unburied part of the window (in the case of tricuspid of its design), as well as the window.