What color indicates the high pressure gauge on a refrigerant manifold?

The high pressure gauge on a refrigerant manifold is indicated by the red hose. This color coding is standardized in the HVACR industry to help technicians quickly identify the functions of the different hoses and gauges during servicing. The red hose is connected to the high side of the system, allowing for the measurement of high pressure, which is critical for diagnosing and servicing refrigeration and air conditioning systems.

The other hoses are designated for specific purposes; for instance, blue typically signifies the low pressure side, yellow is often used as a service hose or for refrigerant transfer, and green is associated with the recovery of refrigerants. Using the correct hose color is vital for safety and accuracy when working with refrigerant systems. Therefore, recognizing that the red hose represents the high pressure gauge helps ensure proper procedures are followed when handling refrigeration equipment.