The low-pressure AC pipe is the larger-diameter tube.
Understanding your vehicle's air conditioning (AC) system pipes is crucial for proper maintenance and troubleshooting. Based on the provided reference, identifying the low-pressure line is straightforward:
Identifying the Low-Pressure AC Line
In an automotive AC system, you'll typically find two main lines running from the engine bay towards the passenger compartment: a high-pressure line and a low-pressure line.
- Size Difference: The easiest way to distinguish them is by their size. According to the reference, the larger-diameter tube is the low-pressure line. The smaller tube, by contrast, is the high-pressure line.
- Location and Path: The low-pressure line runs from the compressor back towards the passenger compartment, carrying the refrigerant at a lower pressure and temperature after it has passed through the evaporator inside the cabin.
Here's a quick comparison:
| Feature | Low-Pressure Line | High-Pressure Line |
|---|---|---|
| Diameter | Larger | Smaller |
| Refrigerant | Lower pressure, Cooler gas | Higher pressure, Hot gas |
| Path (from reference) | From compressor back towards passenger compartment | (Not specified in reference) |
Knowing which line is which is important for tasks like checking AC pressure or adding refrigerant, as the low-pressure port is where refrigerant is typically added to the system. Always consult your vehicle's specific service manual for exact locations and procedures.
