ESCO Air Conditioning Practice Exam

An inefficient compressor is usually indicated by which combination of head pressure and suction pressure?

1. Higher than normal head pressure and higher than normal suction pressure

2. Higher than normal head pressure and lower than normal suction pressure

3. Lower than normal head pressure and higher than normal suction pressure

4. Lower than normal head pressure and lower than normal suction pressure

The correct answer is: Higher than normal head pressure and lower than normal suction pressure

An inefficient compressor is typically indicated by higher than normal head pressure and lower than normal suction pressure. This combination suggests that the compressor is struggling to compress the refrigerant efficiently, resulting in the high discharge pressure and low suction pressure. This imbalance in pressures can be a sign of various issues such as a worn-out compressor, refrigerant leakage, or restrictions in the system. Monitoring and analyzing these pressures can help diagnose compressor issues and ensure optimal system performance. Options A, C, and D are incorrect because they describe pressure combinations that do not align with the typical indicators of an inefficient compressor.