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Compressed Air Aftercooling Systems 

Efficient Cooling Automatically.

Ratnik Air-Cooled Compressed Air Aftercooling Systems provide efficient cooling of compressed air automatically to within degrees of the freezing point. Ratnik Air-Cooled Aftercooler Systems are compatible with a wide variety of compressed air installations. Each system is custom engineered based on compressor specifications and air plant capacity. Hot, moist compressed air is circulated through a large radiator while a variable speed fan unit passes cool, ambient air over it. A temperature sensor and fan control unit maintains a constant discharge temperature. Cooled compressed air is then passed through a vane type moisture separator to remove moisture and reduce freezing in downstream piping.


  • Cool your compressed air to 37°F (2.8°C) in all snowmaking conditions.

  • Automatic controls and variable speed fans maintain constant discharge temperature with very little operator supervision.

  • Coolest discharge temperature of any similarly-sized aftercooler system.

  • Cooler air reduces moisture content of compressed air and enhances snowmaking performance.

  • The Ratnik vane type moisture separator is proven to be 4 to 5 times more effective than centrifugal separators in field tests.

  • Eliminate the use of cooling water from ponds and streams.

  • Reduce environmental impact by eliminating discharge of warm water into rivers and streams.

  • Custom designed control packages simplify installation and operation.

  • Pressure drops of 1.5 PSI (.10 KG per CM/2) or less are available.

  • Installed and operating successfully at many ski areas in a wide variety of compressor installations.

Additional Specs


  • 1,000 to 6,000 CFM per unit (28.3 to 169.9 M/3 per min.).
  • 7-1/2 to 25 HP TEFC fan motors (5.6 to 18.6 KW).

Product Detail

Air Cooled Compressed Air After Cooling System

Compressed Air Aftercooling System

Total Cooling Capacity: 12,000 CFM (340 CU. Meter/Min.)

Multi Unit Control Panel

Air Cooled Compressed Air After Cooling System for 10,000 CFM (28.3 Mᶾ/min) Compressed Air