Ice build-up inside a cool room can be more than just an inconvenience. When ice forms on the evaporator coil, airflow can become restricted, cooling performance can drop, and the system may have to work harder to maintain temperature. Left unresolved, ongoing ice build-up can lead to higher energy costs, product temperature issues and potential equipment damage.
The good news is that there are several steps that may help clear an iced-up cool room evaporator, depending on the severity of the problem.
Start by Letting the Ice Clear Naturally
One of the first steps you can take is to temporarily raise the system setpoint above the ambient room temperature. This prevents the refrigeration system from continuing to cool while allowing the evaporator fans to keep running.
With refrigeration inhibited and airflow still circulating, the ice may gradually melt and clear on its own. This can be an effective first step for minor to moderate ice build-up and may restore airflow without the need for more involved intervention.
Patience is important here, as it may take some time for the ice to fully clear.
Run Additional Defrost Cycles for Freezer Evaporators
If the evaporator is located in a freezer, running the system through several defrost cycles may help remove excess ice.
Defrost cycles are designed to melt frost and ice that naturally forms during operation. If the coil has accumulated more ice than usual, additional defrost cycles may help clear the problem.
However, if ice returns quickly after defrosting, it may indicate a deeper issue that needs investigation.
Using Water for Severe Ice Build-Up
For heavily frozen evaporators, manual ice removal may sometimes be required. In severe cases, cold water applied at low pressure through a hose can help melt and remove thick ice deposits.
This approach should be used with caution.
Applying water can be messy, and it is essential to avoid electrical components such as:
- Fan motors
- Defrost heaters
- Thermostats
- Wiring and electrical connections
Water and electrical components do not mix, so care should always be taken when attempting this method.
In many cases, it may be safer to have a refrigeration technician, such as those at All So Cool, carry out the process.
What Causes a Cool Room to Ice Up?
Clearing the ice may solve the immediate problem, but repeated ice-ups often point to an underlying fault.
Common causes can include:
- Faulty defrost systems
- Poor door seals allowing warm air infiltration
- Doors being left open too often
- Blocked airflow
- Incorrect temperature settings
- Refrigerant or system performance issues
- Faulty sensors or controls
If ice build-up keeps happening, the issue may not be the ice itself, but the reason it is forming.
When to Call a Refrigeration Technician
If your cool room is icing up regularly, professional diagnosis may be required to identify and correct the root cause.
Ongoing ice formation can place stress on the system and may lead to reduced efficiency or component failure if ignored.
At All So Cool, we can help diagnose the cause of recurring cool room ice-ups and provide practical solutions to keep your refrigeration system operating reliably.
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.