Freezer makes a gurgling or hissing sound periodically.

Safety: No repair is usually required.

Steps:

• 1. Identify noise: Gurgling and hissing sounds, especially after the compressor stops, are typically normal as refrigerant equalizes.
• 2. Check for leaks: If there is no oily residue or frost in unusual places, and cooling is normal, consider the noise normal operation.
• 3. Monitor performance: If cooling degrades or new odors appear, have the system inspected by a technician.