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I currently have a 10.5 gpm/160 psi Water Dragon that I use for soft wash and am considering changing to an air pump and a compressor. I've spent most of this morning looking at all the different air pumps and compressors and have become completely confused.  My end goal is to be able to reach 35 to 40 feet and I can't find any information on the relationship between CFM, pump size (3/8". 1/2", etc.), GPM and the size of thee compressor. Being Sunday, no one is open for me to call. Can anyone give me any guidelines? Thanks,

Robbie Miller

Quality Pressure Washing of Houston