Which gas is typically used for pressure testing in refrigeration systems?

Nitrogen is the preferred gas for pressure testing in refrigeration systems due to its inert properties and safety features. When performing pressure tests, it’s essential to use a gas that will not react with the materials inside the system or contribute to any potential hazards. Nitrogen is inert, meaning it will not chemically react with refrigerants or other substances present.

Additionally, nitrogen is readily available, cost-effective, and can be used in a controlled manner to safely identify leaks within the refrigeration system. Its non-flammable nature also adds a level of safety during pressure testing compared to other gases.

While other gases like helium might also be used in some specialized leak detection methods, nitrogen remains the standard choice for general pressure testing across most refrigeration applications.