The document discusses the use of HFC and ammonia refrigeration systems in public and commercial buildings in Bosnia and Herzegovina. It provides examples of HFC equipment installed between 1997-2010, including air cooled liquid chillers and split air conditioning units using refrigerants like R407c, R410a, and R134a. It also describes ammonia refrigeration continuing to be used in some industrial facilities like breweries. Authorized distributors of major brands like York, Trane, and Carrier introduced HFC equipment to the country ahead of Montreal Protocol obligations.