I got the great pleasure in having to do some repairs to my gas water heater. It all started with stepping into the shower with about 3 seconds of warm water, then the coldest water I've encountered in quite awhile. After doing approx. 8 months of cardio exercise in the time span of 10 seconds scrambling out of that cold shower. I realized, the hot water quit.While shivering, I dressed quickly, chattering my teeth like a beaver chewing wood. I go to the control panel and reset the switch, Water heater fires up then after a couple minutes clicks off. I switch it back on and go outside, in the downloading of rain, not the best option to finish a shower by the way. I open up the side panel and notice black soot all over the inside and the exhaust vent chugging black smoke. Thinking what the heck? The burner kicks off and I see water running out the burner tube.Apparently in the sideways dalouge of rain that the water ran into the exhaust tube into the burn chamber, flooding it out. Noticing the design, I see that the exhaust tube faces up and the rain can easily pour in, even during a light rain. What a stupid design. Some engineer thought it would look good on paper, but in the real world, it was a stooooopid stupid design. I attempted to start removing the water heater to bring it inside to clean it up and dry it out. With that thought. Mother nature had a different idea. It just started to rain even harder. Not only did I get soaked. My skivvies and socks even got soaked, to me, that's an indication that this is not getting fixed today. My plan after the needed repairs are to put a rain guard over the top of the exhaust vent, and hopefully that will stop the rain from going down the exhaust into the burn chamber. I will post an update when I get this accomplished, more then likely when the weather gets better.