Hat's off to quality workmanship

I guess this photo speaks for itself.

I am amazed that the occupants are still with us.

This thing was in pieces when I came across it. Notice the flue vent cap on top of the water heater? It is almost pushed completely off the top of the flue. This is because the single wall vent pipe is too long and forcing it over. I don't know about you, but the guy who did this wouldn't get away with this level of workmanship in my place.

The single wall vent was also only covering about 75 percent of the vent cap. I guess there must have been one heck of a draft in this flue vent not to puke CO back into the dwelling.

This is why I ALWAYS recommend having CO detectors in place before sleeping your first night in this or any other home that has gas fired appliances. Not only do you have risk of equipment failure but also installer failure. 

I say Hat's off to quality workmanship because it eliminates one of the two potential problems mentioned above that are associated with gas fired appliances.