Why is refrigerant charge critical in an A/C system?

Refrigerant charge is critical in an A/C system because an incorrect charge can significantly impact the system's efficiency and longevity. When the refrigerant levels are too low or too high, the system may struggle to maintain the desired temperature. Insufficient refrigerant means that the system cannot absorb heat effectively, leading to poor cooling performance and increased energy consumption. Conversely, too much refrigerant can cause excessive pressure within the system, potentially resulting in compressor damage or even equipment failure. Therefore, maintaining the correct refrigerant charge is essential for optimal operation, efficiency, and the overall health of the air conditioning system.