In this video, a building science manager/trainer details the various parts of his “house,” how it can recreate leaks and the tests that can be done to diagnose those issues. See him put his model to work:
http://link.brightcove.com/services/player/bcpid2385795654001?bckey=AQ~~,AAAAABgOguU~,hwHNFPPMul5cixO_RFhYO0Cmi2ePiJ7Q&bctid=390750504800105048001