Funny you should ask! I just used it this morning. I opened up my camper to do some general cleaning. It is hot out there right now. So I plugged in the Predator and turned on the A/C unit to cool things down. I could have used Shore power, but I like to check everything out as if I were camping. I made a short video and put it on Facebook mainly for my family to see. I think my A/C unit is a 13,500 Watt unit. The Predator has no trouble running the unit. I had the generator right outside of the back of my camper where the big power cord goes into the camper. I could not hear the generator running over the sound of the A/C fan. The A/C unit makes far more noise than the Predator. The Predator has a display on it so you can see what power it is operating at. With the A/C on high, the display said that the unit was using 1,700 Watts. That is slightly less than half of the Predator's rated capacity. I'm not saying that the Predator is the best generator out there. There are lots of great generators on the market. I'm saying that I think the Predator is a great generator and that it is doing all that I expected it to do. But just in case, I also bought the extended warranty on mine. If anything goes wrong, and I mean anything, in the next 27 months, I can take it back to Harbor Freight and get a new one at no extra charge. I don't have to lift mine to take it with me on a camping trip. I made a small wooden ramp so that I can just roll it up and into the camper. It just fits in the doorway. I have a video on Youtube showing what I did in case you want to see it. I'll give you a link if you want. The price seems to vary widely depending on where you get it. I got mine at HF for $700.00. Sometimes they are less than that. But I often see them on Amazon for well over $1,200.00. That's ridiculous!