some guy in Jamaica filled my tanks with Butane instead of Propane. I got into the shower and turned on the hot water and just heard a WOOOSCH and saw the fire through the slot over the door. As soon as I turned off the water the fire went out and there wasn't any damage but what shocker. I took the tanks back and asked the guy what he filled them with and he said "propane, butane, tis all the same ting mon." He had a propane tank sitting right next to the butane tank and they were marked! I had to explain to him what a "jet" was. It was a good unit made with all SS and copper parts for the gas and some plastic water fitting. All and all, I never had any trouble with the actual unit, just idiots on the beach.