ESCO Air Conditioning Practice Exam 2025 - Free AC Certification Practice Questions and Study Guide

The scroll compressor is widely used in air conditioning systems due to its efficient operation, compact design, and lower noise levels compared to other types of compressors. It functions by using two spiral-shaped scrolls, one stationary and one orbiting, to compress refrigerant. As the orbiting scroll moves, it traps refrigerant and compresses it into a smaller volume, allowing for smooth and continuous flow.

This design not only makes the scroll compressor more efficient by minimizing energy losses but also enhances its reliability and longevity. Additionally, the fewer moving parts in a scroll compressor compared to piston or reciprocating compressors leads to reduced wear and tear, resulting in lower maintenance requirements.

While alternatives like rotary, piston, and reciprocating compressors do exist and have their uses in various applications, the characteristics of scroll compressors—such as efficiency, compactness, and quieter operation—make them particularly suitable for modern air conditioning systems.