Chillers or Central Air conditioning systems are seen everywhere in Malls, Theatres ,Hospitals and Hotels .They are crucial in providing comfort to the occupants more so in hot and humid climates. Understanding how these systems are designed is fun learning. It will help confidence building both amongst students as well as professionals. This course through five lectures and interesting and concept review tests should empower the students and professionals to understand, analyze as well as design chillers and central air conditioning systems.