In the Phoenix valley, temperature extremes drive super heated attic air into homes from a process called the reverse stack effect. This phenomenon combined with low insulation levels or improperly installed insulation can cause serious discomfort in a home and drive up utility bills each month. Upgrading your insulation to green building code may be a key step to eliminating hot and cold rooms and reducing energy bills. The costs of insulation will vary depending on the truss design, ease of access and current levels. Have your home inspected by a trained BPI (Building Performance Institute) Certified Professional and start saving today!