If it's a double-paned window, the problem is that the crack has allowed the insulation to leak out. This happened to my mom, and that room was the only one that was painfully frigid. Added to that, the windows in the home are hard to open and close because they easily come off the track, which, in her case, created even more airflow from the outside. I would at least get a couple estimates (if you own) or ask the landlord to have someone come out (if you don't own). If your landlord is uncooperative, buy some window film and thermal curtains. If that proves to be too expensive, tape the crack and the window edges with clear duct tape and cover the window with a thick blanket.
sanslenom t1_j9r10av wrote
Reply to Fixing the crack in the window that makes my room freezing cold by Cenddel
If it's a double-paned window, the problem is that the crack has allowed the insulation to leak out. This happened to my mom, and that room was the only one that was painfully frigid. Added to that, the windows in the home are hard to open and close because they easily come off the track, which, in her case, created even more airflow from the outside. I would at least get a couple estimates (if you own) or ask the landlord to have someone come out (if you don't own). If your landlord is uncooperative, buy some window film and thermal curtains. If that proves to be too expensive, tape the crack and the window edges with clear duct tape and cover the window with a thick blanket.