The 18th International Compressor Engineering Conference and the 11th International Refrigeration and Air Conditioning Conference took place in Purdue, USA on July 17-20, 2006. 523 persons from 33 countries attended these conferences. The overall number of attendees and papers is relatively stable. Didier Coulomb and the President of ASHRAE presented their organizations, both of which co-sponsored this event. Meetings of Sections B and E were held. The next conferences will be held in July 2008, in Purdue as usual.