If you know that in each floor you have 6 fixture lighting units of 50 W and the efficiency of them 70% and their runtime is 10 hours /day and there are 3 persons one of them is cooking and the two other are sleeping and they are present 4 hours/day and if you have the following appliance Running time Appliance hour 0.2 Rotisserie hours 5 Large refrigerator hour 0.2 Blender From these information's decide if we will need a cooling or a heating system in the ground floor? And what is the ?ratio of heating losses to gains