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Aftercoolers air compressor spare parts by Southern Cross Compressors Australia


Southern Cross Compressors offers a range of high quality air cooled aftercooler that will effectively remove the majority of condensate (water) from compressed air to protect your system.

Air compressor aftercoolers offer the lowest capital and running cost in removing condensate from compressed air and may be a necessary pre-cooler if you intend to install a refrigerated dryer.


Compressed air is cooled through either an air cooled or water cooled heat exchanger forcing moisture entrapped in the air to condense. The air is then channelled through an efficient condensate separator that spins out a large portion of the condensate.

Aftercoolers can be supplied as an aftermarket accessory for your existing compressor set and can be matched to your reciprocating or rotary screw compressor.

Many new compressors have an air aftercooler internally fitted however, most reciprocating and diesel driven compressors don’t resulting in condensate contaminating the process. An aftercooler is a good way to address problematic water issues in existing systems.


Aftercoolers are the lowest cost and most effective way to remove condensate (water vapour that has condensed back to water) from compressed air. Aftercoolers are not normally needed on many rotary screw and scroll compressors as most new machines are fitted with them as standard.

Aftercoolers operate similar to a radiator in your car. An air (or water) cooled aftercooler cools compressed air to condense most of the entrained moisture back to water. Water is then removed by using a condensate separator. Delivering dry air to your factory is fundamental to reduce potential damage to your equipment or the products you are manufacturing.


  • Reduces moisture build up in air lines
  • Reduces rust inside air lines
  • Reduces rust inside air tools
  • Reduces product spoilage
  • Reduces potential for water to wash out lubricants from tools

An air compressor aftercooler makes the separation and removal of water easy.

Aftercoolers typically remove about 70% of the water vapour from compressed air, if they are correctly sized to do the job.

To size an air compressor aftercooler properly a number of parameters including air flow, pressure and temperatures must be taken into account.

Your Southern Cross Engineer is best able to recommend the right model for to your application.