Walk-in freezer vs cold room: which does your business need?

Both a cold room and a freezer room are walk-in refrigerated spaces, but they do different jobs. Choosing the wrong one, or building the wrong size, is an expensive mistake. Here is how they differ.

A cold room (chiller)

A cold room keeps food cold but not frozen, usually a few degrees above zero. It is used for fresh produce, dairy, drinks, prepared food and meat that will be used soon. It is the right choice if your stock turns over quickly and you need to keep it fresh.

A freezer room

A freezer room keeps food frozen, typically around minus 18 degrees or colder. It is used for frozen meat, fish, ice cream and bulk stock that needs to last weeks or months. Freezer rooms use thicker insulation and a stronger refrigeration system, and need a defrost system for the evaporator.

Main differences

• Temperature: a cold room runs above freezing, a freezer room well below.
• Insulation: a freezer room needs thicker panels to hold the cold.
• Refrigeration: a freezer room needs a larger, lower-temperature system, which costs more.
• Defrosting: both need defrosting, but a freezer room evaporator ices up much faster.
• Running cost: a freezer room generally costs more to run.

Which do you need?

• Restaurants and caterers: usually a cold room, often with a freezer chest or a small freezer room.
• Bakeries: a cold room for dairy and fillings, plus freezers for dough.
• Butcheries: a cold room for hanging and display stock, and a freezer room for bulk.
• Retail and wholesale: depends on the stock. Frozen products need a freezer room.

What to check before you buy or build

• The size, based on your stock and your peak, not your average.
• The temperature range you need, now and in the future.
• The room and its location. Cold rooms need ventilation around the condensing unit.
• The panels and the door, since a poor door seal makes everything work harder.
• The refrigeration system and who will service it.
• Whether the supplier will maintain it after installation.

Keep it running

Both types fail the same ways: a dirty condenser, a failed fan, a controller fault or a refrigerant leak. Regular maintenance, including coil cleaning, gas pressure checks, electrical tests and controller calibration, catches most of these early. We cover this in our scheduled maintenance.

What it costs

Cold room and freezer room installations are quoted individually, because every space is different. For repairs and service work, call-out fees start from R250 and depend on your area. Minor repairs typically cost between R350 and R950. Major repairs start from R1,250.

We build, repair and service cold rooms and freezer rooms across Durban. Call us with the size of the space and what you store, and we will advise you honestly.