Wesson Energy Inc. is a Building Performance Institute (BPI) Accredited Contractor. Based in Waterbury, Conn., Wesson Energy Inc. performs an home energy assessment in areas of hot water system efficiency, central air conditioning efficiency, ductwork, lighting and major appliances, air infiltration levels, moisture problems and carbon monoxide levels. The company is a partner to Connecticut Office of Policy and Management home Energy Assessment Program. In addition, the homeowners receive an assessment of heating system, furnaces or boiler. The firm is a member of U.S. Green Building Council and Green Mechanical Council.