An inefficient compressor is typically indicated by what combination of head and suction pressure?

An inefficient compressor is typically indicated by lower than normal suction pressure combined with higher than normal head pressure. This scenario suggests that the compressor is not effectively drawing in refrigerant from the evaporator (lower suction pressure), which can occur due to blockages, leaks, or other mechanical issues.

At the same time, the presence of higher than normal head pressure indicates that the compressor is working harder than it should, likely due to heat transfer issues or insufficient refrigerant flow. This combination of pressures reflects a system that is not operating efficiently, as the compressor should ideally draw in refrigerant easily and maintain balanced pressure levels throughout the cycle.

Understanding the relationship between suction and head pressures is crucial for diagnosing compressor issues and ensuring proper system functionality.