What is the different in pressure between the high side and the low side?

The difference in pressure between the high side and the low side of a refrigeration or air conditioning system is known as the pressure differential. This differential is critical for the proper functioning of the system, as it indicates the efficiency of the refrigerant cycle. Typically, the high side pressure is significantly greater than the low side pressure, which is necessary for the refrigerant to absorb heat from the environment and release it effectively. The exact values can vary based on system design, refrigerant used, and operating conditions.