We have an onboard Onan on our TT TH that powers our entire rig as if plugged into shorepower, problem is that it is major overkill most of the time. Since we prefer RVing off the power grid I needed something that could power our AC unit, more fuel efficient, less noisy, and remote start as we have grown accustomed to the one button starting simplicity of our Onan. For us the answer was the Champion 3100 inverter generator, 3 year warranty, great customer service, and runs our rig's AC unit with ease, even at high elevations where we do most of our RVing. Our Onan has performed marvelously providing 1200 hours of service over the last decade, alas it gets to rest a bit as the Champion has stepped in and now gets used 80 percent of the time.