What is the difference between a low-pressure blower and an air compressor?

In brief, the main difference between a low-pressure blower and an air compressor lies in their operating principles and intended applications.
A low-pressure blower is primarily designed to provide a steady flow of air or gas at relatively low pressures, typically below 1 bar (14.5 psi). It delivers a high volume of air at low pressure for applications such as ventilation, aeration, or pneumatic conveying.
On the other hand, an air compressor is specifically engineered to compress air, increasing its pressure to a higher level for various industrial processes. It delivers compressed air at higher pressures, typically ranging from a few bar to several hundred bar. Air compressors are used in applications like powering pneumatic tools, operating machinery, or supplying compressed air for industrial processes.
While both devices move air, the distinction lies in the pressure range and purpose. Low-pressure blowers provide high-volume airflow at low pressure, while air compressors generate higher-pressure compressed air for diverse industrial applications.