The time required for walk-in freezer repairs depends on the complexity of the issue. Simple electrical problems can often be resolved within a few hours, while more substantial repairs, like fixing a compressor or addressing refrigerant leaks, may take a day or more. Emergency situations may expedite the process. The specific diagnosis and the availability of replacement parts play a significant role in determining the repair duration. Seeking advice from a professional technician is recommended for a precise estimate based on the specific problem at hand.