Common Causes and How to Fix It

If your commercial fridge is freezing food or drinks, it’s a clear sign something isn’t working as it should. A properly functioning refrigerator should keep items cool — not frozen.

This issue is common in cafés, restaurants, supermarkets, and takeaway shops, and if left unresolved it can lead to food waste, higher power bills, and equipment strain.

Here’s a breakdown of the most common causes — and what you can do about them.

1. Faulty or Worn Door Seals

One of the most overlooked causes of freezing in commercial fridges is damaged or worn door seals.

When seals are cracked, loose, or not sealing correctly, warm air enters the fridge. This forces the refrigeration system to work harder and longer, often leading to overcooling and freezing inside the cabinet.

Signs your seals may be the problem:

• Doors not closing tightly
• Visible cracks or gaps in the gasket
• Condensation around the door
• Ice forming near the edges

👉 Fix: Replacing the door seal often restores normal temperature and improves energy efficiency immediately.

2. Thermostat or Temperature Control Issues

If the thermostat is set too low or isn’t working properly, your fridge can run too cold and begin freezing contents.

This can happen due to:

• Incorrect settings
• Sensor faults
• Worn control components

👉 Fix: Check your temperature settings first. If the issue continues, the thermostat may need professional servicing or replacement.

3. Blocked Airflow Inside the Fridge

Commercial fridges rely on consistent airflow to maintain an even temperature. When vents are blocked by stock or shelves are overloaded, cold air can become trapped in certain areas and cause freezing.

👉 Fix:

• Avoid overfilling the fridge
• Keep vents clear
• Allow space for air to circulate

4. Faulty Evaporator Fan or Components

The evaporator fan circulates cold air throughout the fridge. If it’s malfunctioning, cold air may concentrate in one section, leading to freezing.

Other mechanical faults — such as sensors or control boards — can also cause temperature irregularities.

👉 Fix: A refrigeration technician should inspect and repair faulty internal components.

5. Frequent Door Opening or Poor Door Alignment

Busy commercial environments often mean doors are opened frequently. If doors are also misaligned or not sealing properly, this can lead to temperature instability and overcompensation by the cooling system.

👉 Fix:

• Ensure doors close properly every time
• Check hinges and alignment
• Replace worn seals to maintain an airtight seal

Why Fixing the Problem Quickly Matters

A commercial fridge that freezes when it shouldn’t can cause:

• Food spoilage and wastage
• Increased electricity usage
• Health and safety risks
• Extra strain on compressors and parts

Fixing the issue early can save money and prevent costly breakdowns.

Need Help With Your Commercial Fridge Seals?

At Quality Fridge Seals, we specialise in commercial fridge and freezer door seal replacement and repair to help your equipment run efficiently.

We service:

• Gympie
• Hervey Bay
• Sunshine Coast
• Brisbane Northside

If your fridge is freezing, leaking cold air, or not sealing properly, we can help you restore correct temperatures and reduce energy costs.

Book a Service or Get a Quote Today

Don’t let a faulty seal cost your business money.

Contact Quality Fridge Seals for fast, reliable service and expert advice on commercial refrigeration door seals.