The good news is that the process of running your fridge moves the heat from the fridge into your home, which in the winter is not such a big problem. Your fridge is just another heat pump. It's a bigger problem in the summer when you are maybe trying to cool your house using air-conditioning and your fridge adds heat to your house to keep the fridge cool. Much less desirable.
actually, that makes the room warmer. Your fridge just becomes a bigger heatpump with the door open. the compressor has to work hard to cool a larger area, so therefore uses more electricity and dumps more heat out into the room.
