I have been running this compressor for several years now, not sure how many actually but maybe as many as 6 or 7.<br>I should have gotten a bigger one from the start because this one was at the minimum CFM that I needed. So it has been run fairly hard for a weekend hobby user. I have used it to sand blast parts, run sanders, grinders, cut off tools, die grinders, etc. I cant tell you how many hours it has but it allot IMO. The only problem I have had with it was one check valve and now the outlet tube #33 broke off at the check valve. I expect to get many more hours out of this compressor.