Coffee maker makes loud gurgling, popping, or banging noises during brewing.

Safety first: Unplug and let the unit cool before handling.

• Fill reservoir fully: Ensure the reservoir is filled to the maximum line to minimize air ingestion.
• Descale: Run a full descaling cycle with vinegar and water to remove scale that can cause noisy boiling.
• Check for loose parts: Remove the bottom cover and verify that the heater tube and internal components are securely mounted and not rattling against the housing.
• Monitor operation: Some gurgling is normal, but very loud or metallic noises may indicate a failing heater, which should be replaced.