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Why is air treatment necessary?


Compressed air treatment is a method that dehumidifies and cleans after it leaves the air compressor. This is done using an air dryer and an additional filter beyond the air filter found in a compressor. Air is always contaminated with solid particles such as dust, sand, soot, salt crystals and water as it leaves the compressor. An effective compressed air treatment system lowers the dew point of the air and takes out the elements that may harm equipment downstream of the compressor and dryer. Remember the higher the ambient temperature is, the higher the ability to hold moisture. Water contamination can also lead to microbial contamination, corrosion, blocked or frozen valves, cylinders, air motors and tools and premature wear/failure of equipment. Water contamination of compressed air systems can reduce production efficiency and increase manufacturing costs.



Who uses air dryers?

Both refrigerated and desiccant dryers are needed in many industrial applications to produce/protect final products, as well as to protect much of the pneumatic equipment that is used in many industrial facilities. Food/beverage packaging and manufacturing companies use dryers to prevent their actuators and assembly machinery from rusting or collecting moisture in the lines that prevents clean compressed air from flowing. Dryers are also used in textiles to keep fabrics free of moisture and to aid in the texture of produced products. Many electronics manufacturers need high levels of dry air so that humidity will not transfer over to the production of computers, cell phones, televisions, etc. These same industries often use moisture separators, oil-water separators and aftercoolers to further aid in the drying process, as well as removal of contaminants from any compressed air flow. Dust, dirt or other small particles are present in compressed air until they are removed by using filters, separators and mist eliminators. Air treatment is necessary in almost all compressed air applications. From food manufacturing, to brewing beer, to building electronics, having dry compressed air is a must to prevent product and equipment damage.

If you have any questions on setting up air treatment or sizing your next dryer, please contact us.

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Who we are and how Ash Air can help your business!

Ash Air has been around in New Zealand since 1979, and we’ve grown into a nationwide company with international support and a reputation for quality and reliability.We look after all things compressed air for your business!

  • Reciprocating, Screw, air compressors
  • Vacuum pumps
  • Nitrogen
  • An extensive line of air treatment components

Ash Air's range of Chicago Pneumatic, Alup, Pneumatech, and Quincy compressors are used extensively around the world in industries ranging from oil and gas to food, automotive and farming, and we bring you these world class compressors here in the land of the long white cloud.Our technicians are compressed air equipment experts and are dedicated to addressing customer needs. Supported by a 13 locations nationwide, Ash Air offers one of the widest selections of compressed air equipment and parts available today in New Zealand.

Reliability and Efficiency

With Ash Air compressors, you can count on reliability and high performance for even the most demanding applications. We focus our efforts on the following:

  • Increasing uptime
  • Reducing unexpected repairs
  • Reducing energy consumption
  • Improving the cleanliness of compressed air


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Air is always contaminated with solid particles such as dust, sand, soot, salt crystals and water as it leaves the compressor. An effective compressed air treatment system lowers the dew point of the air and takes out the elements that may harm equipment downstream of the compressor and dryer


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