Dry air

Most of the water is created by heat in the piston high pressure side. Doesnt matter how dry your intake is, it will always create water from the heat. The only way to battle water and oil is have an output filter to catch it. 

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All quality compressors have a water separator tower to condense and purge 99% of the moisture squeezed out of the air during compression. Small inexepensive compressors don't include an adequate water separator and require an output filter to capture most of the moisture. Output filters are designed to capture the 1% or less of the residual moisture that isn't purged from the water separator. There are lots of videos that show how much moisture is blasted out of the water separator tower each 10-15 minutes during a fill. Imagine how often saturated output filters would need replacing if there wasn't a water separator tower and purge valve on the compressor.

Most of the water is created by heat in the piston high pressure side. Doesnt matter how dry your intake is, it will always create water from the heat. The only way to battle water and oil is have an output filter to catch it.

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I think you are confusing the separation of water and air (due to the compression and heat) with the generation of water. Heat from high compression does NOT create water. The water is already in the air. If the air is dryer going in, you will see less air coming out.