What is the standard coil suction header temperature in refrigeration?

The standard coil suction header temperature in refrigeration is typically around 33°F. This temperature is significant because it effectively balances the need for efficient heat transfer within the evaporator coils while preventing issues such as ice formation on the coil. The 33°F temperature allows the refrigerant to adequately absorb heat from the surroundings, which is essential for maintaining optimal system performance.

Setting the temperature too low, such as at 30°F, could increase the risk of freezing and impede heat exchange efficiency, while higher temperatures could lead to decreased refrigerant efficiency and inadequate cooling. Therefore, 33°F represents a practical midpoint that supports effective operation in a wide range of refrigeration applications.