Champion 75531i 3100w Inverter Generator

DesertTracker wrote:
I have been researching gensets for the last couple of weeks and am down to the Yamaha 2400 or the Champion 3100W. I am replacing my 3500/4000 Elim that after six years seems to have a problem with my microwave; still runs the A/C reliably, but makes the microwave count in double time. I'm thinking frequency. Anyway, the only negative I have seen on the 3100W is at higher altitudes and needing to re-jet the carb. Only saw one comment on Amazon so maybe its an isolated incident. Since I live in the SoCal desert, I can be at sea level one weekend and 9000 ft. the next; re-jetting between runs would be a pain. Anyone have any experience with the 3100w at higher altitudes?
Thanks for any advice.

I'm also seriously considering the Yamaha EF2400iSHC and Champion 75531i 3100/2800 generators. Can't comment directly on the high altitude capability of these two; but, I would assume both engines would be affected in a similar fashion since they both have carburated engines. Assuming the same load (i.e., 13,500 BTU a/c), I believe the Champion 75531i 3100/2800 would fare the best at altitude since it supposedly has a higher continuous output (700-800 more) than the Yamaha EF2400iSHC. At least on paper the Champion would seem to have more headroom to accommodate a loss in power at altitude.

I've found several nearby stores that will allow me to demo the EF2400iSHC with the stipulation I purchase it if it sucessfully runs my 13,500 BTU a/c. Seems fair enough. There's also a few online retailers for the Champion 75531i that will allow a return, but you have to pay shipping both ways if you return it (approx. $100-$125). Right now, I'm leaning towards purchasing the Champion 75531i because of the higher continuous wattage rating (2800 vs. 2000 watts), portability (wheels & handle), and approx. $400 lower cost. I think it may be worth the $125 gamble to have a few days to make sure it will work for my needs.

Bottom line, until you plug any given generator into your RV, you'll never know for certain how it will perform. The odds are in your favor both generators will work just fine, but there are no guarantees. Unless you're willing to take a $1000-$1400 gamble, IMO a demo or return option is the only way to go.