Which type of copper tube is specifically designated for air-conditioning and refrigeration installations?

The designation of Type ACR copper tube is specifically intended for air-conditioning and refrigeration installations. This type of tubing is manufactured to meet the unique specifications and standards required for these applications, ensuring it can handle the pressures and thermal stresses associated with refrigeration systems.

Type ACR copper tubes are typically made with thinner walls than other types, such as Type K, L, or M, making them suitable for refrigerant lines. The design and manufacturing process ensures that they are compatible with various refrigerants and can withstand the conditions present in air-conditioning and refrigeration systems without risk of failure or leaks.

Furthermore, while Types M, L, and K copper tubes are used in plumbing, heating, and general piping applications, they do not possess the specific characteristics suited for refrigeration. Therefore, Type ACR is the preferred choice for ensuring reliability and safety in HVAC applications.