What is the common use of nitrogen within F-Gas systems?

Nitrogen is commonly used in F-Gas systems primarily for pressure testing and cleaning systems. When performing maintenance or repairs on refrigeration and air conditioning systems, it is crucial to ensure that the system is free from leaks and contaminants. Nitrogen, being an inert gas, does not react with other substances and is ideal for this purpose.

By pressurizing the system with nitrogen, technicians can identify any leaks through pressure drops and can thoroughly purge the system of moisture and other contaminants before charging it with refrigerant. This ensures that the refrigerant operates efficiently and safely, as contaminants can lead to system malfunctions and reduce overall performance.

In contrast, filling refrigeration systems involves charging the system with refrigerant, which is not the role of nitrogen. While nitrogen can support some processes, such as in leak detection, its primary and most common application within F-Gas systems focuses on pressure testing and maintenance cleaning.