Mud Daubber Nest in Hot Water Heater
Bought the TT used and Son thinks he remembers seeing this in the HW heater when we bought it. At any rate, it's INSIDE where the burner lights on the tube that runs in the bottom. It's been there...
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Yep, take it apart and clean it, not a big deal at all. Then put some fairly large mesh screen over the vent louvers. We screened the water heater, furnace, and refrigerator openings.
