The more insulated your house is, the less heat enters and the cold leaves it, which means you spend less electricity cooling it in summer and heating it in winter. Generally, 50% of the electricity expenditure in summer is the consumption of air conditioning (A/C), the rest are the appliances and lighting that we use every day, so, to calculate the electricity savings that you can have by insulating your house, we consider lower consumption of air conditioning (A/C).