Service Port HVAC: Locations

Discharge Service Port:

The high pressure (discharge) (RED) hose should be attached to the 1/4 in. discharge service port. This port will be located on the discharge line between the air conditioning compressor and the condenser, or on the high pressure (liquid) line.

Fixed Displacement Compressor:

The low pressure (suction) (BLUE) hose should be attached to the 3/8 in. suction service port. This port is located on either the air conditioning compressor, or the suction line between the expansion valve and the compressor.