An emergency needs more than a reset: the priority is to contain the temperature excursion, establish whether equipment is safe to operate and agree the next action. We are REFCOM F-Gas registered and provide a fixed written quote before work starts. Attendance availability must be confirmed when you call; opening hours do not mean a guaranteed arrival time.
Recognise When Cooling Loss Needs Urgent Action
Treat an unexpected temperature rise as urgent when it threatens stored food, affects several cabinets or leaves your business without usable cold storage. A kitchen cold room warming during lunch service presents a different exposure from an empty drinks chiller. Report the actual temperature, its normal range and how long the problem may have been developing. Repeated compressor trips, a stationary evaporator fan or an alarm that returns after acknowledgement are useful observations, not reasons to keep resetting the equipment.
Some symptoms require a safety response before an engineering visit. If there is smoke, a burning smell or water reaching electrical equipment, keep people clear and follow your site emergency procedure. Isolate the equipment only where it is safe and you are authorised to do so. A suspected refrigerant release also needs caution, particularly in small basement rooms. Do not investigate a leak yourself, remove electrical covers or repeatedly re-energise a circuit that has tripped.
Protect Stock While the Emergency Is Assessed
Keep doors closed and suspend unnecessary loading of the affected cabinet or cold room. Move vulnerable stock to suitable working refrigeration where this can be done safely, without overloading it or blocking airflow. In England, food subject to chilled temperature control generally needs to be kept at 8°C or below, with limited exceptions; setting refrigeration at 5°C or below provides a useful margin. Follow your food safety management procedures and any stricter product-specific storage requirements rather than relying on the cabinet display alone.
Record the time the fault was noticed, air-temperature readings and representative product temperatures using a suitable, clean probe where appropriate. Frozen food is commonly stored at −18°C or colder, but a temporary air-temperature rise does not establish whether the food itself has thawed. Identify affected batches and keep questionable stock out of sale or service pending a food safety decision. Neither restored cooling nor normal appearance proves that food exposed to unsuitable temperatures is safe to use.
Make the First Call Useful
Call 07427 826446 with the premises address, postcode and a contact who can authorise work. Describe the affected equipment: for example, a walk-in freezer serving a restaurant, a chilled display in a convenience store or a preparation counter in a hotel kitchen. Have the make, model, alarm code and refrigerant designation available if they can be read without removing covers. Photographs of the controller display and accessible data plate can help make the initial description more precise.
Explain any practical restrictions before attendance is agreed. A basement kitchen in Soho, a supermarket loading bay and a shared plant area in a City office building have different access arrangements. Mention locked plant rooms, landlord permissions, loading restrictions and whether the condenser is at roof level. Tell us if other equipment has lost power or if the problem followed a delivery, power interruption or cleaning. These details help distinguish an isolated cooling emergency from a wider site issue.
Understand What May Be Driving the Temperature Rise
Emergency assessment needs to separate a genuine loss of cooling from a misleading display or a normal defrost period. Relevant checks can include comparing controller and independent temperature readings, reviewing alarm history, confirming the power supply and checking whether fans and the compressor are operating. An iced evaporator may point to defrost failure, air infiltration or restricted airflow. A high-pressure trip may relate to a dirty condenser, failed condenser fan or inadequate ventilation, particularly in cramped London service areas.
These symptoms are not interchangeable, and adding refrigerant is not a general remedy. A sealed system that is short of refrigerant needs the cause investigated, rather than an unexplained top-up. Refrigerant type also changes the precautions required: R404A, R448A and R449A are F-gas refrigerants, while R290 is flammable propane and R744 is carbon dioxide operating at substantially different pressures. Give the nameplate details when calling; do not assume that procedures or replacement refrigerants are interchangeable between systems.
Agree a Safe Intervention and Clear Work Scope
Air Conditioning Installation London is REFCOM F-Gas registered. Where an emergency involves an F-gas refrigerant circuit, applicable requirements include appropriately qualified personnel, preventing avoidable emissions and recovering refrigerant rather than venting it. Existing leak-check and record-keeping obligations depend on the equipment and refrigerant charge. Make any available refrigerant logbook or previous leak report accessible. Registration does not remove the need to identify the refrigerant, assess the site hazards and establish what intervention is appropriate for that particular system.
A fixed written quote is provided before work starts so the proposed work and cost are clear before authorisation. The emergency objective is to establish a safe, workable next step, not to promise that every failure can be resolved immediately. A failed compressor, damaged control board or inaccessible condenser can make component availability or access decisive. Do not accept bypassed safety controls as a way to keep trading; pressure switches, overload protection and other protective devices must not be defeated.
Return to Trading on Evidence, Not Just a Running Compressor
Hearing the compressor restart is not enough to establish that refrigeration has recovered. Temperature pull-down should be observed, with checks appropriate to the fault for airflow, controller behaviour and returning alarms. A heavily loaded cold room may take time to recover, while frequent door opening can obscure whether cooling is effective. Keep recording temperatures and avoid immediately transferring all stock back. The equipment’s operating condition and the food’s acceptability are separate decisions; an engineer restoring cooling does not retrospectively validate stored food.
Before calling, nominate someone who can arrange access, approve the written quote and manage stock decisions. Coverage includes all 32 London boroughs, the City of London and M25 towns, with opening hours of 07:00–21:00 every day. Call 07427 826446 to explain the emergency and confirm attendance availability. If you discover the problem outside those hours, follow your site’s escalation and stock-protection procedures rather than assuming an out-of-hours response is available. Immediate danger should be handled through the appropriate emergency services.
Book an engineer
Fixed written quote before any work starts. 7 days a week, 07:00–21:00.
Frequently asked questions
Is this a 24-hour commercial refrigeration emergency service?
No. Air Conditioning Installation London is open seven days a week from 07:00 to 21:00. Call 07427 826446 during those hours to explain the refrigeration emergency and confirm attendance availability. There is no stated guaranteed arrival time. If equipment fails outside opening hours, protect stock, record temperatures and follow your business’s emergency procedures rather than waiting without a containment plan.
Should I switch off a fridge or freezer that is not cooling?
There is no single rule for every cooling fault. A warm display alone does not establish whether switching off will help, and repeated resets can hide useful alarm information. Keep doors closed and record readings. If there is an electrical hazard, isolate only if safe and authorised. For suspected refrigerant leakage, keep people away and follow site safety procedures rather than operating switches nearby.
Can I keep serving food after the cold room temperature rises?
That depends on the food, its actual temperature and the duration of exposure, not simply whether the refrigeration restarts. Follow your documented food safety procedures, check representative product temperatures and identify affected stock. For food subject to chilled temperature control in England, 8°C is generally the legal upper limit, subject to exceptions. Quarantine questionable food and seek appropriate food safety advice before using it.
Can you simply top up the refrigerant in an emergency?
A refrigerant top-up should not replace investigation of why the charge is low. The refrigerant must first be identified, and any intervention must follow applicable safety and F-Gas requirements. Restrictions can affect which refrigerants may be used for servicing, particularly on older equipment. Air Conditioning Installation London is REFCOM F-Gas registered; provide the equipment data-plate details and any previous leak records when you call.
What information is needed to agree emergency work?
Provide the site address, equipment details, temperature readings, alarm messages and a description of any immediate safety concern. Also explain access restrictions and identify who can authorise work. A fixed written quote is provided before work starts. The free site survey applies to installations; it should not be taken to mean that an emergency attendance or assessment is free. Call to discuss your situation.