BPI's "Delta Standard" Published as American National Standard

Malta, NY, October 1, 2012 – The Building Performance Institute, Inc. (BPI) is proud to announce that BPI-2400-S-2012: Standard Practice for the Standardized Qualification of Whole-House Energy Savings Predictions by Calibration to Energy Use History , also known as the "Delta Standard," has been published as an American National Standards Institute (ANSI) standard. The