Free Tool: Water and Hot Water Usage Estimator Download Andy Shapiro‘s FREE Water and Hot Water Usage Estimator! This tool is used in Building Energy Analytics: Measuring and Understanding Building Energy Use course, approved for 10 AIA LU/HSW Credits , 15 Building Performance Institute (BPI) CEUs , 6 GBCI credits (CE Hours for… Continue reading “Free Tool: Water and Hot Water Usage Estimator”