A cool room is vital for keeping perishable products fresh, but when it isn’t performing as expected, it can be frustrating and costly. There are several common reasons why your cool room may not be reaching the temperature it should, and understanding these can help you get it back on track.

Leaving the Door Open Too Long

One of the most frequent causes of a warm cool room is simply leaving the door open for extended periods while loading or unloading stock. Each time the door is open, warm air enters and increases the cooling load. Over time, this can even cause the evaporator to ice up, reducing its efficiency. Installing a door switch that temporarily shuts off the refrigeration during door openings can prevent this icing. Additionally, door strip curtains are an effective way to minimise air changes while still allowing easy access.

Excess Heat Load

Adding large quantities of freshly cooked or warm product to the cool room can place a significant heat load on the system. Cool rooms are designed to maintain temperature based on a typical load, so sudden additions of heat can temporarily raise the temperature. To reduce this effect, allow hot products to cool to near ambient temperature before placing them in the cool room where possible.

Obstructions and Poor Airflow

Airflow inside the cool room is critical. If the evaporator’s airflow is blocked, the cool room can struggle to maintain the right temperature. Common issues include:

• Stock stacked too close to the evaporator sides, bottom, or front.
• Cling film or plastic bags getting sucked into the evaporator fins.
• Dirty evaporators that restrict airflow.

Ensuring that the evaporator is clean and that stock is stored with enough space around it can significantly improve performance.

Gas Leaks

Sometimes the issue isn’t with the way you use your cool room but with the refrigeration system itself. Gas leaks can reduce the cooling capacity and cause the system to underperform. A qualified technician can perform a leak check and repair any issues to restore efficiency.

Diagnosing the Problem

If the cause of poor cooling isn’t obvious, data logging the temperature and humidity over a period of time can provide valuable insight. Monitoring these conditions helps pinpoint whether the problem is related to door usage, stock load, airflow issues, or mechanical faults.

Maintaining Cool Room Performance

Regular maintenance, including checking airflow, cleaning evaporators, monitoring stock placement, and addressing leaks promptly, will ensure your cool room continues to operate efficiently. Small adjustments, like using strip curtains or pre-cooling hot stock, can make a noticeable difference in performance.

By understanding the factors that affect your cool room, you can prevent temperature fluctuations, protect your stock, and reduce energy costs. If your cool room isn’t performing as it should, our team at All So Cool can help diagnose the issue, carry out repairs, and get your system running efficiently again. 

Chat to All So Cool fridge mechanics Brisbane and Gold Coast on (07) 3422 0011 to discuss how we can help keep your business running cool. We are available 24/7.