The blue lines in this picture trace the “high-water lines” from previous flooding of the crawl space. The interesting thing about this past flooding is that the three "flood lines" that one can see on the furnace indicate that the furnace was not replaced after any of the flooding. The one blue line on the water heater, which lines up with the middle blue line on the furnace, is consistent with only one flooding of the water heater.
Drowning of the burner components of any gas appliance----or any appliance not designed to be submerged----is likely to void the warranty of the unit.
I was so glad the gas was shut off to the building so that I didn’t have to worry about whether they worked or not. High water lines on gas appliances makes for an easy inspection.
Charles Buell
Click on the Rose 
to check out: AHA!---A Forum of Landmark Proportions---your Group
PS, for those of you that are new to my blog (or for some other "unexplained" reason have never noticed)
all pictures and smiley-face inserts (emoticons) (when I use them) have messages that show up when you point at them with your cursor.
DeCroe, is my "etherial" home inspector assistant and occasionally flies into my blog and other people's blogs to offer assistance. To find out more about her beginnings just click on Raven.
* * * * * * * * * * * * * * * * * * * * * * * * *
Click on the Rose to check out: AHA!---A Forum of Landmark Proportions---your Group
PS, for those of you that are new to my blog (or for some other "unexplained" reason have never noticed)all pictures and smiley-face inserts (emoticons) (when I use them) have messages that show up when you point at them with your cursor.
My WORDLESS WEDNESDAY pictures and some selected POEMS & STORIES.
Hey, Charles. There is no way I would trust anything like that after a flood. Thanks, Jim
Jim & Maria, I agree---let alone MULTIPLE events:)
Think when the water hit the electronics it popped a breaker? I hate having the furnace and/or the water heater in the crawl. Good eye Charles.
Jack---I think I could have killed them with my sunglasses on:)
Charlie,
I will admit it, I envy you. You get all these graphic photos and never have to leave your own house.
Now you're showing off by making those neat blue lines and I haven't learned how to do that yet. Three floods! One crawlspace. That must be a record!
Steve, actually Barbara sent me these pictures from her house and asked me to put some nice blue lines on them for her.
Barbara---sort of a different version of a "broken record"
Charles, What a mess! Whatcha mean that the warranty might be warranted? A little Simple Green and some elbow grease and who will know the difference...
Your building consultant in Brentwood, TN - Michael
" OH MY " was this the same house as the carpet mess you shared with me?
You just get all the fun inspections inspections don't you? .....
Dang Michael----of course you are right:)
Nikki, you got it----same house. It has been great blog fodder---not really good for much else:)
looks like the buyer need to put in an order for one of each. cw
Charlie - time for a new warranty? No pre-existing conditions there. Yep, go with that.
Maybe Nikki can put a box of charcoal nearby to soak up the smell...
hahahaha.....
Jay.... I will ship that right over to Charlie "overnight/express"!
Charlie - I hear charcoal works wonders!!!
Cheryl, yes----a long time ago.
Jay, do you think I can get the warranty extended?
Nikki, I don't think you have enough----don't matter how much you got----it won't be enough:)
Charlie - I had a sale pending with a boiler that got rained on (sort of) after the pipes burst. The fact that the owner painted over the walls and tried to hide mold was the real deal breaker.
Carol, mold is a hard thing to hide for very long----has a tendency to like being seen:)
Charlie, Have you heard of the Nautilus brand of submersible furnaces and water heaters?.....Neither have I. Time to scutttle those two tubs.
Just when you think you've seen it all!
If the blue lines were removed, what would we be seeing? A rust line? a black mark?
James, are you selling stock yet?
Debbie, a mud/dirt line----I will go dig up the original picture but I don't think they will show by the time AR reduces them in the post. Here is a picture of the back side of the furnace where one of the lines shows pretty good on the air return