I use electric heat and only heat the kitchen and bedroom during the winter months. I have a thermostat to control heat in each room. I turn on the living room heat only when I have company. When I use the oven to cook in the winter, I leave the oven door slightly ajar so that the heat heats up the kitchen. I also never use the oven to make only one dish in the oven. If I turn on the oven, I make at least 2 dishes that can be cooked at the same time.