Automated temperature and relative humidity monitoring systems were installed in three USDA, AMS Cotton Division Classing Offices prior to the 1993-94 cotton classing season. Compared to present monitoring methods, the automated system was found to have improved accuracy and sensitivity. In addition, the automated system offers excellent data acquisition, analysis, and report generating capabilities. Classing office engineers and Heating, Ventilating, and Air Conditioning (HVAC) technicians have found the automated system to be a valuable tool in detecting and troubleshooting HVAC problems and in fine-tuning HVAC system operations.