Do Walk-in Cooler & Freezer Walls Wear Out?

Hi there,

Do walk-in cooler walls wear out over time?

I build restaurants and we are renovating a restaurant we built 17 years ago.  A supplier is recommending we replace the walk-in box, because they “break down”. I find that hard to believe. Could you please give me your opinion?

Thanks,

- Len Chaston

Len,

On the surface, your walk-in box probably has a few scratches, dents and slightly worn metal but overall it appears serviceable and is likely structurally sound. However, the insulation inside the panel can take a much more severe beating over the years than the exterior. The insulation has to deal with huge temperature differentials between the inside and outside of your box. Depending on the material used to insulate your box it could have absorbed a good deal of moisture, which degrades the thermal resistance of your insulation. Your old walk-in was also not built to meet modern efficiency and safety requirements and it could even contain a large amount of wood (which is a poor and water permeable insulator). If you have a walk-in freezer, one indication of trouble is ice buildup on the inside of the box. This is a sign that water vapor has been able to infiltrate the insulation.

At 17 years old, the cost of running the walk-in for several years as well as the added load and wear on your refrigeration unit will far overshadow the cost of purchasing a new walk-in unit. If you do decide to opt for a new walk-in, I want you to take a look at the inside of the panels when your old unit is disassembled. A panel that is now leaking all over the floor was no longer doing the job it was intended to.

Ice buildup in a walk-in panel

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Walk-in Installation Tips

All U.S. Cooler walk-ins are test assembled in our plant prior to shipment. This ensures problem free on-site installation. If you have had problems setting up your walk-ins, we have some tips that may be helpful.

1. Receiving your walk-in: When your walk-in cooler or freezer is delivered by the freight company, it is critically important that you inventory the items delivered.

a. You must be sure when you sign the delivery receipt, you have received the freight in good condition and not damaged in anyway. The person signing the delivery receipt is responsible for inspecting the freight.
b. If you see any damage to the container or boxes, this is a good sign that you may have hidden damage. If you have a camera, take pictures of any damage to your freight, even before it is taken off the truck. Call U.S. Cooler and ask for Customer Service if you see a problem with your shipment. When you call, have your order number available. The order number allows us to pull up all details needed to answer your questions.
c. Insist that the driver does not leave until your satisfied all freight damage has been noted on the delivery receipt before the driver signs the delivery receipt.

2. Take time to read the instruction manual and review drawing: Before you get started take out the installation instructions and drawing package. Inventory your parts against the drawing to be sure you understand the layout. If you have any questions on how to assemble the walk-in call U.S. Cooler and ask for Customer Service.

3. Make sure your area where the walk-in will be installed is flat: Level is critical when installing a walk-in cooler or freezer. Before installation you should get an exact tolerance of the entire space you are planning to install the walk-in. The longer the box, the more important it is to have a level area. Floorless boxes should be shimmed inside the vinyl screed to prevent gaps and air infiltration. A liquid leveling compound is very useful for floors that are not completely level.
4. Threshold bar:  On all standard walk-ins, a threshold bar must be installed in the floor panel below the door panel before the door can be set in place. This allows for the door threshold to be anchored to the floor.

5. Line up top corners evenly: When installing panels, make sure the top of the panels are level with the adjacent panels before locking them in place. This ensures the ceiling fits properly on the routes and will keep the box square as the panels are being installed.

6. With the exception of PRO3 and Apex, all refrigeration units must have a condensation line run to the outside of the walk-in. When running any utilities, including those for refrigeration, drill into the wall panel; not the ceiling. After running all utilities, caulk around drilled holes. Follow all local building and electrical codes during installation.

View our Test-Assembly Webcam

Energy (and money) Saving Tips for Your Walk-in

Here are some ways to help you save energy costs on your walk-in cooler or freezer.

• Properly seal all penetrations in walk-in.
• Replace worn or damaged door seals.
• Periodically, check gaskets between panels to make sure they are not cracked or weathered. If so, check with your local health codes for the correct procedure to follow as far as repair and replacement.
• Do not prop door open for an extended period of time.
• Add strip curtains or air curtains to your walk-in for extra protection from air infiltration when door is open.
• Make sure the lights are off when exiting the walk-in. Lights produce heat, which will cause your unit to run more to hold its optimal temperature.
• Make sure there is nothing stacked around the coil to restrict airflow.
• Make sure fan motors are balanced and running at optimum speed. Clean fan blades to reduce drag.
• Use an evaporator with an EC Motor.
• Install refrigeration away from doors.
• Keep condenser coils clean.
• Utilize Smart Defrost Kits.
• Set defrost frequency at minimum requirements.