In 1983, Aztec Sensible Cooling was established to fill a void in the air handling market. By combining old technology with new processes, Aztec coolers produced air quality comparable to mechanically refrigerated air - without using compressors and at a fraction of the annual operating cost. Aztec has created a national market for air handlers that incorporate its highly efficient indirect (dry) evaporative cooling process which delivers cool air without adding moisture to the air stream.