As heat rises, insulation is the first logical place when you want to increase the effectiveness of your HVAC units and decrease energy costs to contemplate. You might be better willing to make a smart choice about what kind of attic insulation to think about when you understand the reason why this part of the house is essential to success in this goal. The insulation that grand-parents and your parents could have used is not the only option; and it may not be the very best.