Weber Pellet Swelling / Hopper Moisture Contamination

Pellets in the hopper become swollen, clumped, or form a solid mass, causing feed issues.

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Possible Causes

Exposure to rain or high humidity, Hopper lid not sealing, Long-term storage of pellets in hopper, Condensation inside hopper

How to Fix / Troubleshooting

Safety first: Ensure the grill is off and cool before working around the hopper and auger.

  • Empty hopper: Scoop out pellets and vacuum remaining dust and fragments.
  • Inspect for moisture: Check the hopper walls and lid for signs of water intrusion or condensation.
  • Dry the hopper: Allow the hopper to air dry completely. Do not use open flames or high heat sources inside the hopper.
  • Check lid seal: Ensure the hopper lid closes fully and that any gasket is intact. Replace the gasket if damaged.
  • Use fresh pellets: Store pellets indoors in a dry container and only load what you need for each cook.
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Repair Difficulty

Very Easy 1/5

Required Part

Hopper Lid Gasket
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