I have two of the Honda EU2000i generators and I run them in parallel for 4000 watts. That's only if I'm running the A/C. One of them will run a 13,500 btu A/C, but not much else. But if it's winter and you don't need the A/C, you only have to run one generator. They're VERY quiet too. The only thing is, if it's raining, it's best to try and keep them dry. I've never had a problem, but I hear to not let them get too wet. They're VERY efficent too. I was at a camping store the other day and Honda now has a 6500 watt EU series generator. It's almost 300 pounds. But they cranked it up for me and it is just as quiet as one of my EU2000i's. There's really no need to have that much power unless you're running two A/C's at once. Plus, that generator was $3,400!! Ouch. I paid $879 each for my generators from Mayberry's in New Jersey. There was no tax and shipping was free. I have yet to find a better deal anywhere. Those loud generators suck. They'll make you go mad!