Posted 15/03/2026 by admin
Commercial fridges are essential for restaurants, cafés, hotels, bars, and convenience stores. When they stop working properly, it can quickly lead to food spoilage, lost revenue, and serious disruption to daily operations.
As a commercial refrigeration technician with over 15 years of experience, I handle around 50–60 service calls every month. During that time, I’ve worked on many types of equipment, including display fridges, undercounter units, prep fridges, and bottle coolers.
Over the years, I’ve noticed that many of the same problems occur again and again. The good news is that most of these issues are preventable with proper maintenance and regular servicing.
In this guide, I’ll explain the most common commercial fridge problems, what causes them, and how business owners should contact a technician immediately to prevent further damage. This is a highly relevant moment of intent where readers may need professional help, Commercial Fridge Repairs or email us or call us directly on 0207 8709645
The most frequent refrigeration problems I see on service calls include:
Overheating
Low refrigerant (low gas)
Fan motor failure
Compressor failure
Gas leaks
Blocked condenser coils
Let’s look at each of these issues in more detail.
One of the most common and most preventable problems with commercial fridges is blocked condenser coils.
The condenser coil removes heat from the fridge system. When it becomes blocked with dust, grease, or dirt, the system struggles to release heat, causing the fridge to work much harder than it should.
Blocked condensers are usually caused by:
Dust buildup
Grease from busy kitchens
Poor or irregular maintenance
Some early warning signs include:
Fridge temperature rising
The unit overheating
The fridge is running louder than normal
Keeping the condenser clean is one of the simplest ways to avoid expensive refrigeration repairs.
Simple steps can prevent this problem:
Hoover the condenser regularly
Clean and wash the condenser filters
Keep airflow around the unit clear
Many breakdowns I attend could have been avoided with basic condenser cleaning.
Low refrigerant is another common issue that causes commercial fridges to stop cooling properly.
Refrigerant gas is what allows the fridge system to remove heat and maintain the correct temperature. If the gas level drops, the fridge cannot cool efficiently.
Low refrigerant can happen because of:
Refrigerant leaks
Poor servicing
Natural wear over time
Typical symptoms include:
The fridge is not getting cold enough
High internal temperatures
The compressor is running constantly
A technician will normally:
Locate and repair the leak
Recharge the refrigerant gas
Ignoring low refrigerant can eventually lead to compressor damage, which is a far more expensive repair.
Fan motors are one of the most common parts to fail in commercial refrigerators.
These fans circulate cold air throughout the cabinet to ensure consistent cooling.
Fan motors keep cold air moving inside the fridge so that all products remain at safe temperatures.
Signs of a failing fan motor include:
Uneven cooling inside the fridge
Loud or unusual noises
Rising cabinet temperatures
Fan motor replacement typically costs between £150 and £225, depending on the type of unit.
Fortunately, this is usually a quick and relatively affordable repair.
The compressor is often described as the heart of a refrigeration system. When it fails, the fridge will stop cooling completely.
Compressor failure is usually caused by:
Overheating
Dirty condenser coils
Electrical faults
Lack of regular servicing
Signs the compressor may be failing include:
The fridge tripped and shut off
Loud noises from the unit
Rising temperatures
Compressor replacements can be expensive.
Typical examples include:
£895 to £1295 for a large display fridge compressor
Around £385 to £445 for a small unit
For smaller fridges, replacing the entire fridge may sometimes be cheaper than replacing the compressor.
Gas leaks reduce the cooling performance of a commercial fridge and can eventually stop the system from working altogether.
Gas leaks may be caused by:
Damaged refrigerant pipes
Long-term wear
Poor previous repairs
Common symptoms include:
Gradually rising temperatures
The fridge is running constantly
Poor cooling performance
Gas leaks should always be repaired by a qualified technician.
One situation I often see is when customers try to remove ice buildup themselves.
In one case, a customer tried to remove ice from the back of their fridge using a sharp knife. Unfortunately, the knife punctured the refrigeration pipework and caused a gas leak.
What could have been a simple defrost ended up becoming a much more expensive repair job.
If ice builds up in a fridge, it’s always best to defrost the unit properly or call a technician rather than using sharp tools.
Business owners should pay attention to early warning signs.
Common indicators include:
High internal temperatures
The fridge is not cooling properly
Loud or unusual noises
The fridge tripping off
Overheating
If any of these problems occur, it’s best to switch the fridge off and contact a technician immediately to prevent further damage. In many cases, arranging commercial fridge repairs quickly can prevent the fault from becoming a much more expensive breakdown. or Email us or call us direct on – 0207 8709645
If a commercial fridge stops cooling, food safety becomes a major concern.
Generally, food should not stay in a warm fridge for more than:
2 to 4 hours
If a fridge fails, businesses should move food into another working fridge or freezer as quickly as possible.
Regular maintenance is the best way to prevent expensive refrigeration breakdowns.
Business owners can carry out simple maintenance such as:
Hoovering the condenser
Cleaning the air filters
These small tasks can significantly improve fridge performance.
A professional refrigeration service should be carried out every 6 months.
Regular servicing helps identify small problems before they turn into expensive repairs.
Sometimes repairing a fridge makes sense, while other times replacing the unit is the better option.
Fan motors fail
Gas needs topping up
Minor electrical parts need replacing
A small fridge compressor fails
In these situations, the cost of repair may be close to the cost of a new fridge.
From my experience, some commercial fridge brands tend to be more reliable than others.
Brands that perform well include:
Brands that may require more frequent repairs include:
Polar
Adexia
Choosing a reliable brand can reduce long-term maintenance costs.
If you are purchasing a new commercial fridge, consider the following features:
Strong cabinet construction
Energy efficiency
Heavy-duty components
Good airflow and cooling performance
Investing in a well-built fridge can save money on repairs in the long run.
After more than 15 years working in commercial refrigeration, the most important advice I can give is simple:
Treat your commercial fridge like you would your car.
Regular servicing and basic maintenance will prevent many breakdowns and extend the life of the equipment.
The single most important habit for business owners is:
Keep the condenser coil clean at all times.
This simple step alone can prevent many common refrigeration problems.
Commercial fridge problems are common in busy kitchens, but many of them are preventable.
Issues such as blocked condensers, low refrigerant, fan motor failures, and compressor problems often develop because of poor maintenance or delayed servicing.
By recognising early warning signs, keeping key components clean, and arranging regular servicing every six months, businesses can avoid costly repairs and protect valuable stock.
A well-maintained commercial fridge will run more efficiently, last longer, and keep your food safe.
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Office: 0207 8709645
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