Having a properly insulated home can contribute towards lower heating and cooling bills. But where are the best areas to insulate to achieve this goal? Without insulation in key areas of the home, conditioned air can escape continuously, costing you financially. It may sound obvious, but some of the best places to insulate in your home are the roof, walls, windows/doors, drafty areas, and the floors. Why are these areas the best places to insulate in your home? The answer is simple. Almost all of the air lost from your home comes from those problem areas.