Cold rooms and freezing rooms, supply and installation The Chiller Advantage Chillers offer advantages to certain facility types and utilize AHUs to control airflow throughout a facility. When we look at the investment required for an HVAC system, initial equipment costs for a chiller system can be somewhat lower than a VRF and chillers offer high COPs that may ultimately be the most cost-efficient for more extensive facilities. Chiller s also offer more options for operating on alternativ...