> It takes a lot of energy to raise the temperature of a house - more than to maintain a given temperature is this true? the house is constantly bleeding off i

> It takes a lot of energy to raise the temperature of a house - more than to maintain a given temperature is this true? the house is constantly bleeding off its heat at a rate proportional to the temperature difference between interior and exterior. it should always cost more energy to maintain the higher temperature gradient than to just let the heat bleed off (which it was always going to do) and add in more heat once the building is occupied.