How do you unclog a defrost drain on a refrigerator?

Where is the defrost drain on a Bosch fridge freezer?

UK Appliance Technician: Tyler Z. The drain is actually in the back wall of the freezer, but you have to remove the ceiling to see the silver evaporator coils as well as the ice/frost build up above it to to get to the drain.

Where does the water go when a refrigerator defrost?

The melted water when your appliance auto-defrosts goes into a water collection point at the rear of your appliance that sits above the compressor. As the compressor gets warm during everyday usage the resultant moisture evaporates. The water collected during defrosting goes to a drain pan close to the compressor.