Repairs should address why equipment stopped holding temperature, not simply clear an alarm or add refrigerant. A split door seal, failed evaporator fan, blocked condensate drain and worn compressor require different work, parts and checks. As a REFCOM F-Gas registered business, we provide a fixed written quote before work starts. Tell us what equipment has failed, the displayed temperature and whether stock is already affected so the repair requirement can be discussed.
Repairing Refrigeration That Will Not Hold Temperature
In a restaurant kitchen, sandwich shop or supermarket stockroom, a rising cabinet temperature does not automatically mean the compressor has failed. Damaged door gaskets admit warm, moist air; failed fans prevent cold air reaching the load; and ice around the evaporator restricts circulation. Repairs may involve replacing a gasket, fan motor, defrost heater or termination sensor. The important distinction is between the damaged component and the condition that caused it to fail, particularly where icing keeps returning.
Describe what happens during normal trading: whether the cabinet warms only when busy, whether one compartment is affected, and whether the compressor runs continuously or stops repeatedly. Keep the door closed where possible and move vulnerable stock to suitable working refrigeration under your food safety procedure. Do not chip ice away with a knife or repeatedly adjust the controller to a colder setting. Neither action repairs the defect, and puncturing an evaporator can turn a component repair into substantial refrigerant-circuit work.
Door Seals, Fans, Defrost Parts and Drain Repairs
For frequently opened upright fridges and refrigerated preparation counters, relatively small components can have a large effect on performance. A replacement gasket must match the door profile and seal around the whole opening; hinges may also need attention if the door has dropped. A replacement evaporator fan must have the correct electrical rating, airflow direction and mounting arrangement. Fitting a part that merely looks similar can leave uneven temperatures, excessive noise or an overloaded motor.
Water beneath a cabinet can come from a blocked drain, damaged drain heater, cracked tray or a problem with condensate evaporation. Ice returning after a thaw may point to a failed defrost heater, sensor or control output rather than a drainage problem alone. Repair work should restore the intended drainage and defrost arrangement, not bypass protective controls. In cafés and pub kitchens with restricted floor space, explain where water appears and whether it coincides with a defrost cycle or cleaning.
Refrigerant Leaks and Sealed-Circuit Repairs
Low refrigerant charge can reduce cooling, but adding refrigerant without addressing leakage is not a lasting repair. Where a leak is confirmed, the work may involve repairing accessible pipework or replacing a leaking coil, valve or connection. After opening the circuit, appropriate procedures include pressure testing within the equipment's limits, evacuation and charging to the manufacturer's requirements. Refrigerant must not be deliberately vented. The proposed repair should identify the affected part and explain any practical limits on access or repairability.
The equipment data plate matters because refrigerants are not interchangeable. Cabinets may use fluorinated refrigerants such as R134a or R448A, while others use R290 propane or R600a isobutane. Hydrocarbon refrigerants are flammable and need suitable working methods; REFCOM F-Gas registration does not make their risks identical to those of fluorinated gases. For F-Gas equipment, refrigerant handling and any applicable leak-checking and record-keeping duties must follow current regulations. Refrigerant restrictions and availability can also affect the viability of an older cabinet repair.
Compressor, Electrical and Controller Repairs
A compressor that hums, trips or fails to start may have a defective start relay, capacitor, contactor or supply connection rather than an internal mechanical failure. Conversely, replacing electrical starting components will not rescue a seized compressor or damaged windings. Where compressor replacement is justified, the replacement must suit the refrigerant, operating temperature and application. The cause of failure also matters: poor heat rejection, liquid refrigerant returning to the compressor or electrical faults can damage a replacement if left unresolved.
Controller and sensor repairs need the same care. A temperature probe with the wrong resistance characteristic can give misleading readings, while incorrect defrost settings can cause repeated icing or unnecessary warming. Replacement controls should retain the equipment's intended operating and protection functions. Report error codes, tripped protection and any burning smell when you call. If there are signs of electrical damage, stop using the equipment and isolate it only if safe to do so; do not keep resetting a tripping circuit.
Protecting Stock During a Refrigeration Repair
For most foods that require chilled storage in England, the legal maximum is 8°C, subject to specific exceptions; setting refrigeration at 5°C or below helps provide a working margin. A cabinet display is not proof that every product is at a safe temperature, particularly after a prolonged fault. Use your food safety management procedure and appropriate temperature checks to decide what can be transferred, held or discarded. Do not assume that cooling food again makes it safe after uncontrolled temperature exposure.
Frozen storage commonly targets −18°C or colder, but decisions about affected stock depend on the product, its temperature history and applicable instructions. Record when the fault was noticed and avoid repeatedly opening the unit to check progress. After a repair, an empty cabinet reaching its set point is only part of the picture: it must stabilise and recover appropriately in use. In busy London delis, bakeries and catering kitchens, plan stock transfers so repaired equipment is not immediately overloaded with warm products.
Arrange a Repair and Get a Written Quote
Call Air Conditioning Installation London on 07427 826446 between 07:00 and 21:00, seven days a week. Have the site postcode, equipment make and model, refrigerant label details if readable, and a short description of the problem ready. Say whether it is an undercounter fridge, upright freezer, display cabinet or another commercial unit. Access details are useful too: basement stairs, loading restrictions and equipment positioned behind a serving counter can affect how repair work is planned in London premises.
A fixed written quote is provided before work starts. The proposed scope should make clear which defect is being addressed and which parts and associated work are included. Whether repair is sensible depends on the condition of the cabinet, parts availability, refrigerant requirements and the extent of damage, not age alone. Coverage includes all 32 London boroughs, the City of London and M25 towns. Ask about availability when calling; opening hours should not be taken as a promise of an immediate visit.
Book an engineer
Fixed written quote before any work starts. 7 days a week, 07:00–21:00.
Frequently asked questions
Can a commercial fridge that is running but not cooling be repaired?
Often, but the symptom does not identify a single failed part. The compressor may be running while an evaporator fan has stopped, the coil is iced over or refrigerant has escaped. A door that no longer seals can also prevent temperature recovery. The repair decision depends on the confirmed defect, parts availability and equipment condition. Avoid assuming it just needs gas, and give the engineer the model details and observed temperatures.
Should I switch the fridge off before a repair visit?
There is no single instruction for every fault. If you notice smoke, a burning smell, exposed wiring or repeated electrical tripping, stop using the unit and isolate it if safe. For a temperature problem without those warning signs, protect stock and ask for advice when booking. Do not remove covers or attempt refrigerant work. Record the displayed temperature and any error code before switching off, provided doing so is safe.
Can you repair refrigeration using R290 propane?
Tell us the refrigerant shown on the data plate when you call so the work can be assessed appropriately. R290 is propane: it is flammable and requires suitable tools, working practices and control of ignition sources. It is not an interchangeable substitute for an F-Gas refrigerant. REFCOM F-Gas registration concerns fluorinated gases, so it should not be treated as a blanket statement that every refrigerant or item of equipment can be handled identically.
How much will a commercial refrigeration repair cost?
The cost depends on the failed component, access, parts availability and whether the sealed refrigerant circuit needs opening. A door gasket repair has a different scope from replacing a leaking evaporator or compressor. Air Conditioning Installation London provides a fixed written quote before work starts. Call with the equipment details to discuss the requirement. The advertised free site survey applies to installations; it should not be assumed to mean a free repair visit.
Which London areas do you cover, and when can I call?
Coverage extends across all 32 London boroughs, the City of London and M25 towns. Call 07427 826446 seven days a week between 07:00 and 21:00 to discuss a commercial refrigeration repair and current availability. Provide the postcode, equipment type and whether food stock is affected. Mention any site access restrictions or landlord permissions needed. These are opening hours, not a guaranteed attendance time or a claim of round-the-clock operation.