Even with a vehicle that has a built in Onan, I like having a generator with me. Since the eu2200i is not that bigger than the 1000 watt model, I might as well have one of those. Coupled with a soft-start system for the A/C, a 2000 watt generator can handle my power needs, using a fraction of the gas the onboard Onan uses. Plus, if something happens and the batteries are too low, the Onan won't start or run, so having some type of generator that starts via a pull start can get me back on the road again in a pinch.
This doesn't say the Onan is useless. However, there are times when one just needs power to top off the batteries or handle the furnace amp draw. For these, a smaller, portable generator is ideal.
