The ESWA utilizes fill media in conjunction with a closed loop coil providing sensible and latent heattransfer. The ESWA provides superior evaporative cooling performance as a result of its hybridtechnology and its full footprint patented Sensi-Coil®, featuring CrossCool™ Internal TubeEnhancement. This results in the most efficient closed circuit coolers in the industry with the lowestconnected fan horsepower and smallest footprint. With the coil located out of the air stream, onlysensible cooling is utilized, resulting in no evaporation on the coil which reduces scale buildup!