I have two of the Champion 2000 watt inverters and the kit that ties them together to get me 30 amp/3500 watts. I read reviews online and off grid folks have put thousands of hours on these units with no issues at all.

I run them on non ethanol every 2 months or so and they always start on the first or second pull. They were a good buy. Champion has fantastic support and parts network too...

And for testing , I have ran my fridge , deep freezer, AND a 5000 BTU window AC unit on one 2000 watt inverter generator.