If your major goal is to reduce your energy expenses as much as possible you will need an energy trained professional in order to reach this goal. We here at "AirTight Spray Foam Insulation of North East Central Pa" hold certifications in building science that exceed basic so called certified insulation training levels by far. Some of our Certifications include BPI- Building Performance Institute as a Building Analyst, an Energy Star Rater by Resnet which allows us to certify a new home as an energy star rated home. Energy Star rated homes average 15-25% less in energy costs and hold a higher resale value. We currently work with PP&L, PA Home Energy, Keystone Help energy programs that help reduce energy consumption costs though rebates and low interest energy loans. All of these programs require intensive training and dedicated use of applying building science theory and knowledge. Choose your spray foam insulator and energy professional carefully and ask to see copies of their Training certifications and their certification of insurances as well.