If you have so circumstances that you need to change the old windows for a new type of window in the winter season, then you need to trace the correctness of this type of work. So that there is less air cooling in the apartment, the replacement process must be done sequentially one window, and not all at once. After the dismantling of the old frame is carried out, it is necessary to remove the available ice and snow from the slopes of the window. Then using the construction hairdryer, it is necessary to warm the surface of the window opening to room temperature. After the window is leveled in level in the opening and fixed with special anchor bolts, to disconnect the opening between the frame and the surface of the opening.