In high altitude what do people use to run their 13500AC?
I know the EU3000iS works fine but it is so expensive.
The EF3000iSE looks good but isn't much cheaper.

Are those the only quiet generators on the market that can do the job?

Just curious, but why would you need A/C at high altitudes?

Guess you haven't been in the Rockies recently. The beetle kill has done massive damage and many areas are no longer shaded because the trees have died and been removed. After living in Colorado and used to cold July and August can get hot.

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I assume you mean a 1350 AC unit, not 13500. Yamaha makes a 2400 watt one that folks have used and it is lighter and cheaper than the Honda 3000i. You want a good, Honda, Yamaha, etc. one since you need clean power to your RV. The cheap ones can cook the electronic controls in modern RV AC's and inverters. Good Luck