I like others bought a rig expecting to get in the commercial world,but its to competetive and to many cut throats.I'll stick to my day job.Well any way I have two epps hot water units with 20 horse hondas and general pumps.35 gallon chemical tank with a shurflo 12 volt pump 3.1 glm.There is no clocks on them but I know there is no more than,tops 80 hrs between the both of them.Its a shame they are great machines but like some others here say its hard to get it going.Looking for 13500 or make reasonable offer.If interested please let me no and Ill have my wife email some picks.Im not all that good with these computers.