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What Temperature Should a Fridge Be? UK Food Business Requirements

What Temperature Should a Fridge Be? UK Food Business Requirements

For UK food businesses, getting the fridge temperature right is not optional. Under the Food Safety and Hygiene (England) Regulations 2013 (and equivalent legislation in Scotland, Wales, and Northern Ireland), chilled food must be kept at or below 8C. But the legal maximum and the operational target are not the same thing. The Food Standards Agency recommends running commercial fridges between 1C and 5C, and most EHO inspectors expect to see readings consistently below 5C. This article explains the legal requirements, the practical reasons for aiming lower than the law demands, and exactly what environmental health officers look for when they check your fridge temperatures.
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Key takeaways

The legal maximum fridge temperature in the UK is 8C, but best practice is between 1C and 5C
Set your fridge thermostat to 2-3C to allow a buffer for door openings and busy service periods
EHOs probe actual food, not air temperature, so your fridge display reading is not the full picture
Listeria can still grow at 8C, which is why aiming for 5C or below provides a genuine safety margin
Documented corrective actions for out-of-range readings are more important than a perfect record

The Legal Requirement: Below 8C

UK food safety law sets 8C as the maximum temperature at which chilled food may be stored. This applies to any food that carries a "keep refrigerated" instruction, any food that would become unsafe if left at ambient temperature, and any food with a use-by date that assumes cold storage. The 8C limit comes from Regulation (EC) No 852/2004, transposed into UK law after Brexit. If an EHO visits and finds your fridge at 9C or above, that is a legal breach, and enforcement action can follow. It is worth noting that 8C is not a target. It is the ceiling. Operating at 7.5C means you are technically legal but dangerously close to the limit, with no buffer for door openings, stock loading, or ambient temperature changes during a busy service. The legal requirement applies to the temperature of the food, not the air temperature inside the fridge. Air temperature can fluctuate by 2-3C every time the door opens. If you rely on air temperature alone, you may find that your food is sitting above 8C for extended periods without realising it.

Best Practice: 1C to 5C

The FSA and most local authority guidance documents recommend running commercial fridges between 1C and 5C. Setting your fridge to 3C gives you a comfortable buffer: even during a busy lunch service with frequent door openings, the air temperature is unlikely to breach 8C and the food temperature will stay well within legal limits. At 5C, bacterial growth is dramatically slowed compared to 8C. Listeria monocytogenes, one of the most dangerous refrigerated pathogens, can still grow at 8C, albeit slowly. At 5C, its growth rate drops significantly. For high-risk foods such as cooked meats, dairy, prepared salads, and sandwiches, keeping temperatures below 5C provides a genuine safety margin, not just a paperwork one. Many food businesses set their fridges to 2-3C. This accounts for temperature fluctuations during loading and door openings, and means that even in worst-case scenarios the food rarely exceeds 5C. If your fridge regularly reads above 5C, it is time to investigate the cause: overloading, blocked vents, worn door seals, or an undersized unit for the volume of stock.

What EHO Inspectors Actually Check

Environmental health officers do not simply glance at your fridge display. They carry their own calibrated probe thermometers and will check the temperature of actual food items, not just the air. They look at your temperature monitoring records to see whether you are checking daily, whether readings are consistently below 5C, and whether you have documented corrective actions for any out-of-range results. EHOs also look at physical conditions: Is the fridge overloaded? Are air vents blocked by stock? Is raw meat stored above ready-to-eat food? Are door seals intact? A fridge at the correct temperature but poorly organised still represents a contamination risk. If your records show a spike to 7C last Tuesday and you have written "door left open during delivery, food checked and temps returned to 3C within 30 minutes", that demonstrates competence. If your records show 7C with no comment, or your records have gaps, that raises concerns. Consistent monitoring with documented corrective actions is what separates a 5-rated business from a 3.
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Practical Tips for Maintaining Correct Fridge Temperature

Position your fridge away from heat sources: ovens, dishwashers, direct sunlight, and radiators. Commercial kitchens are hot environments, and a fridge working harder to compensate will use more energy and break down sooner. Allow hot food to cool to below 8C before placing it in the fridge. Putting large volumes of hot food directly into a fridge raises the internal temperature for everything else inside. Use a blast chiller or cool food in shallow containers in a ventilated area first. Do not overload the fridge. Air needs to circulate around the food to maintain even cooling. Packing food tightly against the back wall or stacking containers with no gaps restricts airflow and creates warm spots. Keep the door closed as much as possible during service. Consider whether you need a dedicated prep fridge with a worktop for items used frequently, rather than opening the main cold store repeatedly. Finally, schedule regular maintenance: clean condenser coils quarterly, check door seals monthly, and have the unit serviced annually.

What to do next

Set your fridge thermostat to 3C

Adjust the thermostat so the display reads 3C when stable. This provides enough buffer for door openings and loading without risk of freezing delicate items.

Record fridge temperatures twice daily

Check and log temperatures at the start of the day and before the evening shift. Use a calibrated probe on a food item, not just the display reading.

Create a corrective action procedure for out-of-range readings

Document what staff should do if the fridge reads above 5C: check the door seal, assess how long food has been above temperature, and escalate if needed.

Common mistakes to avoid

Mistake
Relying on the fridge display as the only temperature check
Instead
Fridge displays show air temperature, which can differ from food temperature by 2-3C. Use a calibrated probe in a food item or a fridge thermometer placed in a container of water for a more accurate reading.
Mistake
Setting the fridge to exactly 8C because that is the legal limit
Instead
At 8C you have zero margin for error. Any door opening, stock loading, or ambient heat increase will push food above the legal limit. Aim for 3C.

Frequently asked questions

What temperature should a fridge be in a commercial kitchen?

The legal maximum is 8C, but best practice is 1C to 5C. Most food safety professionals recommend setting the thermostat to 2-3C. This provides a buffer for door openings and ensures food stays well below the legal limit at all times.

How often should I check my fridge temperature?

At minimum, check and record fridge temperatures once per day. Best practice is twice daily: once at the start of the day and once during or after service. If you use a digital data logger, it will record automatically at set intervals.

Can I get fined for a fridge being above 8C?

Yes. Storing chilled food above 8C is a breach of food safety regulations. Enforcement can range from a written warning to a hygiene improvement notice, a fixed penalty, or prosecution for serious or repeated offences. It will also affect your food hygiene rating.

Is 7C OK for a fridge in a food business?

Technically 7C is below the 8C legal maximum, but it leaves almost no safety margin. A single door opening during busy service can push the temperature above 8C. Most EHOs would flag this and recommend aiming for 5C or below.

Should a fridge be on 1 or 5?

It depends on the numbering system. On most commercial fridges, lower numbers mean warmer temperatures. Setting 1 is the warmest, setting 5 is the coldest. For a food business, set the dial to a higher number (colder) and verify with a thermometer. The dial number is not a temperature - always use a calibrated thermometer to confirm the actual reading is between 1C and 5C.

Is my fridge ok at 7 degrees?

7C is above the recommended 5C best practice but still within the UK legal maximum of 8C. While you are not breaking the law, food stored at 7C has a shorter safe shelf life because bacteria grow faster at higher temperatures. EHO inspectors prefer to see readings consistently below 5C. If your fridge regularly reads 7C, check the door seal, avoid overloading, and adjust the thermostat down.

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Expert Answers

What Temperature Should a Fridge Be in a Commercial Kitchen?How Often Should Fridge Temperatures Be Checked?

UK Regulations

Food Safety (Temperature Control) Regulations 1995Regulation (EC) No 852/2004 on Food Hygiene

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