RSa 5.5
The Ingersoll Rand RSa 5.5 is a 5.5 kW-class oil-flooded rotary screw compressor in the RSa family.
Current model Availability checked 17 Sep 2026The RSa 5.5, also written RSA 5.5, is part of Ingersoll Rand’s compact 4–11 kW platform. Retain the “a” when identifying the model: an RSa 5.5 should not be assumed to be the same machine as an RS with a similar number.
When comparing a quotation, establish the control type and delivered airflow at the intended pressure. The receiver and integrated air-treatment package also affect the space and equipment needed for the installation.
Options and variations
The full i/n/ix suffix and package identify the version. TAS indicates integrated air treatment; phase and receiver choices vary across this family. Check the exact model rather than carrying specifications across packages.
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