huju, that was covered in earlier replies. Most poskim don’t consider it a problem.
If your home’s heat is controlled by a thermostat, you have the same problem when you open your front door. While it’s possible to listen to your refrigerator to determine whether the compressor is running and delaying opening the door until it does, I’ve never heard of someone waiting outside in the cold until the heat comes on before opening their front door. They’d also need some way of ascertaining from outside whether the heat was on.