What type of copper piping is required for refrigerant piping?

The type of copper piping required for refrigerant piping must comply with specific industry standards to ensure the safety and efficacy of HVAC systems. The correct answer identifies copper tubing that conforms to ASTM B 280, which sets important specifications for the thickness, strength, and suitability of copper used in air conditioning and refrigeration applications. This standard ensures that the copper pipe can withstand the pressures associated with refrigerants while preventing leaks and maintaining system integrity.

Using the correct copper type is crucial because other types, such as Type K, Type L, or standard copper pipe, may not meet the necessary specifications for pressure ratings or may not be designed to handle the thermal and mechanical stresses imposed by refrigerants. As a result, adhering to ASTM B 280 ensures that the copper piping will perform reliably in demanding HVAC environments, preventing potential failures or safety issues during operation.