How to Increase the Energy Efficiency of Your Existing Home I am an energy auditor and weatherization contractor working primarily in the residential market in Central Pennsylvania. Through a variety of tests, I can tell a homeowner not only what home improvements should be done to improve the efficiency of the home, but also what the return on investment will be. Apart from the energy… How to Increase the Energy Efficiency of Your Existing Home I am an energy auditor and weatherization contractor working primarily in the residential market in Central Pennsylvania. Through a variety of tests, I can tell a homeowner not only what home improvements should be done to improve the efficiency of the home, but also what the return on investment will be. Apart from the energy…