When considering Heating, Ventilation and Air Conditioning systems for Substations, there are several unique challenges that require unique engineering solutions. Switchgear, both high and low voltage and instrumentation equipment are very susceptible to dust and high temperatures. Each ECE system is designed specifically for that application and environment. By assessing each scenario using ambient dust and temperature data as well as equipment heat loads and specifications, we determine the most cost effective system design that will ensure the longevity of our clients equipment.