The blue lines I have drawn over the picture below, 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.
Flooding 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. While the HVAC contractor will be called to evaluate the units—replacement is likely the only option.
Charles Buell, Real Estate Inspections in Seattle
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