1. Performance Rating of Commercial and Industrial Unitary Air-Conditioning and Heat Pump Equipment;ANSI/AHRI Standard 340/360,2007
2. Positive Displacement Refrigerant Compressors and Compressor Units;ANSI/AHRI Standard 540-99,2010
3. ASHRAE Standard 41.2-1987 (RA 92) – “Standard Methods for Laboratory Airflow Measurement”;ASHRAE,1987