Air Conditioning Systems Air conditioning systems may include compressors, condensers, cooling towers, and a wide variety of air handling fans, blowers, dampers, and other equipment. Most air conditioning breakdowns are a result of either electrical breakdown of motors or mechanical breakdown of compressors. Many manufacturing processes require that temperature and humidity be kept within certain specific ranges; otherwise production must be halted or product and raw stock may be spoiled. © 2007 The Boiler Inspection & Insurance Company of Canada.     All rights reserved.