If the hose gets clogged, water will sit in the drain pan and spill over into the furnace. This contributes to moisture and humidity problems as well as damages the insides of the furnace. Cover fuzzy furniture with sheets or other material that won't be as warm to sit on. Other Appliances Refrigerator. Check door gaskets and repair loose fitting ones.
Light bulbs give off heat as well as light.
Because the heat that is lost helps to heat the house during winter. You really aren't losing by lighting up you living space. However, this only applies to the rooms that you are using. Turn off lights whenever they are not being used. If you regularly us any lighting while you sleep, make sure that it is as efficient as possible.