A/C System Pressure Zone Classification
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
A/C Performance Table - with PHT
| Ambient Air Temperature | Relative Humidity | Service Port Pressure | Maximum Left Center Discharge Air Temperature | |
|---|---|---|---|---|
| Low Side | High Side | |||
| 13-16°C (55-65°F) | 0-100% | 150-287 kPa (22-42 psi) | 800-1360 kPa (116-197 psi) | 14°C (57°F) |
| 19-24°C (66-75°F) | Below 40% | 150-300 kPa (22-44 psi) | 920-1480 kPa (134-1215 psi) | 14°C (57°F) |
| Above 40% | 198-355 kPa (29-52 psi) | 1070-1670 kPa (155-242 psi) | 18°C (64°F) | |
| 25-29°C (76-85°F) | Below 35% | 236-355 kPa (34-52 psi) | 1290-1740 kPa (187-253 psi) | 18°C (64°F) |
| 35-60% | 259-370 kPa (38-54 psi) | 1380-1800 kPa (200-261 psi) | 19°C (66°F) | |
| Above 60% | 279-414 kPa (40-60 psi) | 1450-1930 kPa (210-280 psi) | 22°C (72°F) | |
| 30-35°C (86-95°F) | Below 30% | 236-422 kPa (31-61 psi) | 1380-2050 kPa (200-298 psi) | 22°C (72°F) |
| 30-60% | 308-439 kPa (45-64 psi) | 1630-2120 kPa (237-308 psi) | 23°C (76°F) | |
| Above 60% | 335-474 kPa (49-69 psi) | 1720-2240 kPa (250-325 psi) | 26°C (79°F) | |
| 36-41°C (96-105°F) | Below 20% | 352-474 kPa (51-69 psi) | 1890-2350 kPa (274-341 psi) | 25°C (77°F) |
| 20-40% | 365-496 kPa (53-72 psi) | 1930-2410 kPa (280-350 psi) | 27°C (81°F) | |
| Above 40% | 389-516 kPa (56-75 psi) | 2010-2480 kPa (292-360 psi) | 29°C (84°F) | |
| 42-46°C (106-115°F) | Below 20% | 422-531 kPa (61-77 psi) | 2240-2630 kPa (325-382 psi) | 29°C (84°F) |
| Above 20% | 431-552 kPa (63-80 psi) | 2270-2690 kPa (329-390 psi) | 31°C (88°F) | |
| 47-49°C (116-120°F) | Below 30% | 491-598 kPa (71-87 psi) | 2550-2940 kPa (370-427 psi) | 34°C (93°F) |