screening analysis for epact covered commercial hvac and water heating equipment volume 1 main report april 2000 office of building technology state community programs energy efficiency renewable us department ii contents 0 introduction scope the 3 2 methodology overview 5 engineering approach annual space cooling loads translation to use 4 representative types climate locations blast simulation 6 7 swh sizing 8 mapping epca categories ashrae industry lifetime shipment baseline cost relative data 10 distribution chain pricing 12 packaged