I am heating my home to 21 degrees Celsius, and the outside temperature is -10 degrees Celsius. Given that there is heat loss due to poor insulation of my home which is proportional to the temperature difference between the inside and the outside, calculate how much energy it takes to heat the room with a heat pump between the inside and the outside with a certain efficiency ɛ

I am heating my home to 21 degrees Celsius, and the outside temperature is -10 degrees Celsius. Given that there is heat loss due to poor insulation of my home which is proportional to the temperature difference between the inside and the outside, calculate how much energy it takes to heat the room with a heat pump between the inside and the outside with a certain efficiency ɛ