I ran this for a couple hours today on propane. I want to get the 5 hour break in period over so I can put 5W-30 synthetic oil in for the cold starts this winter. As far as quiet it’s as quiet as any Honda or Yamaha 4 stroke of the same size. You are supposed to run it at varying loads during break in so I plugged it into the fish house. With the furnace fan, a crock pot the led interior lights on and a 12″ oscillating table fan running that moved the power consumption light up to about 25%. The generator was only about 6′ right outside the house and the sound of the furnace fan almost drowned out the noise from the generator. So as far as the noise level I give it 5 stars.
In order to put more of a load on it I brought the shop vac in to vacuum up the floor as it needed it anyhow. So adding the shop vac to all the above running that moved the power consumption light up to 50%. This kicked it out of Eco mode and the decibels went up but again same noise level as what I’m used to listening to Honda’s. It may be a bit louder running on gas but I haven’t run any gas through it yet. They must have at the factory because I can smell it when I opened the cap. It’s got a few other bells and whistles like a set of led lights that light up the reset breakers and a led that comes on with the push of a button to light up the gas cap area when it’s time to dump more gas in at night.
Not much real world testing yet but so far I’m pretty impressed with this unit and think it’s going to work well for my application.