Wouldn't start out of the box until I read a review that said if you follow the Westinghouse direction of tightening the gas cap until it "clicks" the generator will be air starved. Sure enough. it started right up. The unit is also noisier than I expected-difficult to hold a conversation 25 feet away when at 75% power. BUT the unit seems well built, can be carried and boosted into an RV storage compartment using both hands and the display panel is great. I also think this is the perfect size to run the 15,000 BTU A/C and still have some battery charging ability left over. I hope to have a long, trouble-free relationship with it.