It is not unusual for users of refrigeration systems to be unsure of the cooling their existing plant is actually doing. This can come under the spotlight when there is an increase in production in the plant and it needs to be established if the present system can handle the increase. Instead of taking a risk that the existing plant will cope or investing in what may be unnecessary new plant the sensible solution is to accurately determine the load and the load profile. Ethos can assess the load over a representative period to give insights to the load and its diversity. Recognition of load diversity can result in the requirement for significantly smaller chillers. A better understanding of the load means that refrigeration plant can be designed more appropriately to maximise efficiency and to improve the plant resilience.