A stand-alone recirculating chiller has advantages of being easy to move in a laboratory setting if it is needed on multiple processes or tools that are not running all at the same time. An important aspect to understand about these and any other recirculating chiller is that the manageable heat load is a function of the fluid temperature and ambient conditions. As the graphs show, the heat load is maximized when the ambient temperature is lower and the fluid temperature is higher. These air-cooled examples are even more portable as they do not depend on available house cooling liquid for the final heat exchange.