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Why Do I Have Water in my Compressor Lines in the Winter When I Have a Dryer?

The ambient temperature in an air compressor’s environment can greatly affect your air compressor’s performance. All air compressors will generate some amount of water, but depending on inlet air conditions some can produce large amounts of water. Making sure your air compressor is properly ridding itself of excess water is crucial to keeping your machine running properly. 

Many air compressors are equipped with water separators that remove water from the airstream. However, the air leaving your compressor is typically warmer than the ambient air around your compressor. As that warm air cools inside of the piping, any moisture will condense and build up in the piping that needs to be removed. This is when your dryer takes over, by cooling down that warm air to 35°F and removing the condensation. However, if your pipes cool down to 35°F as well, this is when you will run into excess water in your pipes. Winter weather around this temperature can pose the problem of excess water in your compressor’s pipes. In some cases (mainly colder climates), a desiccant dryer may need to be used to drop the dew point lower to avoid any water.

If you are using a dryer but are noticing a considerable amount of water in your lines, there are a few common areas you can check:

Although colder ambient temperatures are usually better for your compressor, winter climate can also affect the amount of condensation and overall water in your compressor’s lines. It is always important to regularly check for common condensation issues on your compressor, especially during harsher seasons.

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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!

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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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