Fuel or hydraulic driven rotary screw air compressors are designed for continuous operation, making them suitable for job site pneumatic tools requiring an uninterrupted supply of compressed air at a consistent pressure such as sandblasters, jackhammers, and paint sprayers. They are more compact, efficient and generally require less maintenance and repair.

Fuel or hydraulic driven reciprocating piston air compressors are geared towards applications with intermittent airflow demands at variable pressures such as inflating tires or operating pneumatic tools occasionally. They are often larger, typically cost less upfront but require more frequent maintenance and repair.