What I have done with ours, is as Robert suggested. Turn off eco mode when you are going to start a high-demand device. If you're going to have the a/c running for a long time, like all day, you can switch on eco mode after the a/c has been running for a few minutes. That will reduce noise and wear on the generators, without stressing the a/c. The downside to this plan is, if the a/c cycles off, you will have to run outside to switch eco mode back off before the compressor comes back on.
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.