Temperature monitoring records that survive an EHO visit
General information for UK hospitality operators, not legal advice. If something here is wrong or out of date, the editorial policy explains how to report it.
Temperature monitoring records prove the cold chain held, not just that a fridge felt cold to the touch, and they are what an inspector actually checks.
Temperature monitoring records are the dated, named readings that show chilled and hot food stayed inside its legal limits, and they are the first thing an environmental health officer asks to see. Useful temperature monitoring records cover every unit holding food at risk, are taken at fixed points in the day, and show what was done on the occasions a reading came back out of range.
Taking the reading is the easy part. The hard part is taking it at the same points every day, including the shift when three deliveries land at once and the pass is backed up, then leaving behind something legible six weeks later. That is the whole task: a habit that survives a busy service, and a record that survives being asked for.
The legal baseline for chilled, hot and frozen storage
In England, food that needs refrigeration must be kept at 8°C or below. Schedule 4 of the Food Safety and Hygiene (England) Regulations 2013 makes it an offence to hold such food above 8°C, and allows a single period of up to four hours above the limit for service or display, after which the food is used or thrown away. Wales and Northern Ireland apply the same 8°C limit under their own hygiene regulations. Scotland is the exception: it keeps its own temperature control regulations, made in 1995 and still in force there, so a Scottish site checks against those rather than the England rules.
Hot food runs the other way. It must be held at 63°C or above, with a concession of the same shape: a single period of up to two hours below 63°C for service or display. The regulations frame that figure as the level needed to control the growth of pathogenic micro-organisms, which is why hot holding checks belong on the same sheet as fridge checks rather than on a separate one nobody remembers. Cooling sits between the two. Food Standards Agency guidance is to cool cooked food as quickly as possible and get it into the fridge within 90 minutes, and that is guidance rather than a figure written into the regulations.
Freezers are where operators most often quote a number that is not in the law. The England regulations set the chilled and hot holding limits above; they do not set a general freezer temperature for a catering business. Frozen storage targets come instead from the manufacturer's specification for the unit and from the business's own food safety management system, and the target recorded there is the one the readings should be judged against. Most kitchens also run chilled units at 5°C or below rather than sitting at the limit, so a fridge drifting a degree or two still has room before it breaches 8°C.
What good temperature monitoring records look like
A defensible set of temperature monitoring records has the same features whether it is kept on paper or on a phone. Checks happen at fixed points in the day, typically opening, mid-service and close, rather than whenever somebody remembers. Every reading is time-stamped and attached to the person who took it, not initialled in a block at the end of a shift. Anything outside the safe range is flagged when it is found, not noticed a week later by whoever reviews the sheet. And the history is stored somewhere searchable, so a single day can be produced without working through a folder.
There is a practical question of scope underneath all this: how many units need checking, and how often. A single-site pub kitchen with two walk-ins and a display fridge might reasonably check three times a day, while a restaurant with several reach-ins, a bar fridge and a separate dessert chiller may need more frequent checks on the units holding the highest-risk stock. The right frequency is the one set out in the business's own food safety management system rather than a fixed national number, but whatever frequency is chosen has to be followed, and followed in a way that leaves a trail.
Why paper logs fail under scrutiny
A clipboard taped to the fridge door works until the shift gets busy, at which point it is filled in from memory after service, or not at all. Pages go missing, get splashed with sauce, or sit in a drawer for weeks before anyone looks at the readings. None of that proves bad faith. It reflects that paper has no way of prompting a check, no way of flagging an outlier, and no resistance to being backfilled.
An officer reviewing a log with gaps cannot tell whether the checks happened and went unwritten or never happened at all, and the business carries that uncertainty. Rows of identical figures in the same pen tend to raise more questions than they settle. Digital is not a workaround here: the Food Standards Agency offers its Safer food, better business diary to be kept electronically as well as on printed pages, so an electronic record is an expected format rather than an unusual one.
Corrective action is what inspectors actually check
A single out-of-range reading is not, by itself, a failure. What an officer looks for is what happened next: whether the reading was noticed, whether the food was checked, and whether a decision was recorded, be that discarding stock, moving it to a working unit, or logging that an engineer had been called. A fridge logged well above the limit followed by nothing looks far worse than the same reading followed by a documented response within the hour.
This is where temperature records join the wider due diligence case a business needs if something does go wrong. Showing that a problem was caught and corrected is the kind of evidence set out in a due diligence defence built on records, and it applies to a warm fridge as much as to any other failure. A business that can show a pattern of catching and fixing small problems quickly stands in a stronger position than one whose records look immaculate and thin.
Probe thermometers underpin every reading
A record is only as reliable as the probe used to take it. A thermometer reading a couple of degrees out, uncalibrated for months, can make a safe fridge look like a breach or hide a genuine one. The check takes minutes, and probe thermometer calibration sets out how to do it. The point is worth stating plainly: no amount of disciplined logging compensates for equipment nobody has confirmed is accurate. A kitchen logging three readings a day from an uncalibrated probe has built a detailed record of the wrong number.
Fitting temperature checks into a HACCP plan
Temperature checks are rarely a standalone task. In most kitchens they sit inside a HACCP plan as one or more critical control points, so the monitoring frequency, the critical limits and the corrective action are defined in advance rather than improvised on the night. The food safety management system guidance sets out that structure and states plainly that a business needs to show its records as evidence of how it keeps food safe. Building a HACCP plan an EHO will respect covers the wider plan. Within that framework, digital food safety software keeps the checklist, the readings and the corrective actions in one place rather than scattered across a fridge door and a manager's memory.
Doing this without the paperwork
Keeping this running by hand means somebody chasing a clipboard, transcribing readings, and hoping nothing was missed on the busiest night of the week. Zynthio treats a temperature as a validated field with a minimum and a maximum, raises a corrective action automatically when a reading falls outside it, and stamps every entry with the time and the name of whoever made it. Six weeks of records comes out as a PDF rather than an afternoon in a stock room, which is the form an inspector asks for. The food safety software pages set out how the checks are generated and swept.
Frequently asked questions
How often should fridge and freezer temperatures be checked?
Most food safety management systems set fixed points across the day, such as opening, mid-service and close, rather than continuous readings. What matters to an inspector is that checks happen at consistent times, are recorded against a named person, and that any reading outside range is followed by a documented corrective action.
What temperature should chilled food be stored at in the UK?
In England, Wales and Northern Ireland chilled food must be kept at 8°C or below, with a single period of up to four hours above that limit allowed for display or service before the food is used or thrown away. Most kitchens set their fridges at 5°C or below to leave a margin. Scotland keeps its own temperature control regulations, so a Scottish site should check against those.
What temperature should a commercial freezer run at?
The England hygiene regulations set chilled and hot holding limits but no general freezer figure for a catering business, so there is no single legal number to quote. The target comes from the manufacturer's specification for the unit and from the food safety management system the business writes for itself, and the recorded readings should be judged against that documented target.
Does a single out-of-range reading mean food must be thrown away?
Not automatically. What matters is what happens next: the reading is flagged, the food is checked, and a decision is recorded, whether that is discarding stock, moving it to a working unit, or noting a fault has been fixed. An unexplained out-of-range reading with no action recorded is the problem, not the reading itself.
Do temperature records need to be kept on paper?
No. The Food Standards Agency offers its Safer food, better business diary either as printed pages or kept electronically, so a digital log is an expected format. What food safety officers look for is a complete, consistent, retrievable history of checks, time-stamped against the person who took each reading and showing what was done about anything out of range.