It’s important to clean inside your Sub-Zero freezer routinely to maintain efficiency and prevent unpleasant odors, mold, and other problems. Our comprehensive guide includes step-by-step instructions as well as tips for getting rid of mold and preventing unpleasant smells.
How to Clean Inside a Sub-Zero Freezer
The inside of your freezer needs to be cleaned like any other appliance. Even if you only use it for storing ice cream and frozen dinners, spills happen, and food gets forgotten and spoils. This can cause nasty consequences like mold and odors. Luckily, cleaning the inside of a sub-zero freezer is a relatively easy task.
What You’ll Need to Clean the Interior of Your Freezer
Only a few supplies are needed to clean the inside of your Sub-Zero freezer:
- Water
- Baking Soda
- Mild Detergent
- Soft Cloth or Sponge
According to Sub-Zero, never clean the freezer with solutions such as vinegar, rubbing alcohol, or other alcohol-based cleaners.

How Do You Clean Inside a Sub-Zero Freezer? Here’s Step-By-Step Instructions:
Step 1: Remove all food items and any removable parts, such as shelves or drawers. Refer to your Owner’s Manual for instructions on removing components for your specific Sub-Zero freezer model.
Step 2: Turn off the freezer at the control panel and allow it to defrost for 4-6 hours. Allow any removed shelves or drawers to warm to room temperature before you begin cleaning them.
Step 3: Create a paste of water, mild soap, and baking soda. Clean all surfaces inside the freezer. Avoid getting water or your cleaning paste on the lights and control panel. Rinse with water and dry thoroughly.
Step 4: To clean the freezer drawers, wait until they have warmed to room temperature and follow the same steps as you did to clean the interior surfaces of the freezer.
Step 5: To clean wire shelves use soap and water. Dry them well before replacing them. Wire shelves are not dishwasher safe.
Once you have finished rinsing and drying the drawers and other removable components, replace the components and turn the freezer back on.
Tips and Tricks for Keeping Your Sub-Zero Freezer Clean
Sub-Zero freezers are known for their quality and durability, but even the best freezer can develop mold and odors if it isn’t properly maintained.
To Remove Mold and Odors Inside Sub-Zero Freezer
Make sure to clean the inside of your freezer regularly. Even if you can’t see any mold, it can still build up over time and cause problems. If you find mold or notice odors, it can be removed with a little elbow grease and a strong cleaner. Scrub the affected area with a stiff brush or sponge, using a mixture of two caps full of bleach mixed with a few drops of dish soap and water.
To Prevent Mold and Odors
If you want to prevent mold and odors from forming in your Sub-Zero freezer, clean up any spills immediately and remove any spoiled food. Keep the door gaskets clean and in good condition to seal properly. Ensure the evaporator coil is clean, so the freezer can cool efficiently. Check the temperature settings occasionally to ensure they are set correctly at zero degrees Fahrenheit.
If the temperature of your Sub-Zero freezer seems to be fluctuating or continuously getting warmer, it may be a sign of an underlying issue that will need to be diagnosed by an Authorized Sub-Zero freezer repair company.