Needed to get a portable a/c to install some trim on two rooms after some tornado damage. After getting the run around from some flakey contractors, I decided to go and do it myself. This compressor worked for this job and one other small job, and then the problems began, it couldn't pump up the presssure to get the control switch to shut off, why, because of internal leaks. The hotter these units get the aluminum heads warp, it's an inherant design flaw. I've not seen one of the compressors that utilize the oilless design that was worth a flip. They've all failed within 5 years of purchase, most only used sporadically. My last oil filled unit failed after 20 years of hard use, it's replacement has been on the job 7 years without issue. Meanwhile, I've burned up 2 other aluminum headed oilless units, of the shop size/vertical tank design at other farm operations I oversee. Don't waste your money on the the Porter Cable.