How to Fix a Small Hole in a Water Heater
- 1). Dip the toothpick into the jar of plumber's putty. Insert the toothpick into the hole until it can go no farther. Leave the toothpick for 15 to 20 minutes, allowing water to make the toothpick expand, filling the hole.
- 2). Shear off the portion of the toothpick still extending from the water heater, using the flat-head screwdriver. The water inside the tank should have caused the toothpick to expand, filling the hole. The plumber's putty will seal any smaller openings for water to escape.
- 3). Wipe off excess plumber's putty around the repaired area, using the clean rag. Monitor the leak for a few days to ensure that the repair has taken hold.
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