Two-stage compressors are usually more efficient, run cooler, and deliver more air for the power consumed, particularly in the 100 to 200 psi (689 to 1,378 kPa) pressure range.

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Two-stage compressors are more efficient because they cool the air between the stages, reducing the work needed to compress it further. This leads to cooler operation and more air delivery for the power consumed, especially in the specified pressure range.

Two-Stage Compressors Are Usually More Efficient, Run Cooler, and Deliver