Fridge Temperature Log: What Food Businesses Need To Record

If you run a café, restaurant, pub, shop or care home, you already know that keeping food cold is not optional. What catches a lot of businesses out is proving it. When an environmental health officer walks through the door, “the fridge is always fine” is not an answer. A clear, up to date fridge temperature log is.

The good news is that keeping a log is simple, takes a couple of minutes a day, and does far more than keep inspectors happy. It is one of the earliest warning signs that a fridge or freezer is starting to struggle, which means you can get it looked at before it fails and takes a full shift’s stock with it.

In this guide we will walk through what to record, how often, which temperatures to aim for, and what to do when the numbers start creeping the wrong way.

What Is a Fridge Temperature Log?

A fridge temperature log is a simple record of the temperature of each fridge, freezer, cold room and chilled display in your business, taken at set times every day. Each entry shows the date, the time, the unit, the reading and the initials of whoever took it. If something was wrong, it also shows what you did about it.

It can be a paper sheet on a clipboard, a page in your food safety diary, or a digital system that records the readings for you. The format matters far less than the habit. What an inspector wants to see is that someone checks every unit, every day, and acts when there is a problem.

Most food businesses in England, Wales and Northern Ireland use the Food Standards Agency’s Safer Food, Better Business pack, which includes opening and closing checks where chilled storage temperatures are noted. In Scotland, CookSafe does the same job. A dedicated log simply makes those checks clearer and easier to follow.

Why a Fridge Temperature Log Matters For Your Business

It is easy to think of a temperature log as paperwork for paperwork’s sake. In practice, it protects you in three ways.

It keeps food safe

Harmful bacteria such as listeria and salmonella multiply much faster once chilled food warms up. Food can look, smell and taste perfectly normal while it is becoming unsafe, so you cannot rely on your senses. Regular readings are the only reliable way to know your cold chain is holding.

It shows you are meeting the law

Food businesses have a legal duty to keep food safe, and chilled food must be kept at the right temperature. Your records are your evidence. During an inspection, a well kept log is one of the quickest ways to show that your food safety management is under control, and it can make a real difference to your food hygiene rating.

It spots equipment problems early

This is the part most businesses miss. A fridge rarely goes from perfect to broken overnight. More often it creeps up a degree here and there over days or weeks as a door seal wears, a condenser clogs with dust or the refrigerant runs low. A log turns those small changes into a pattern you can see, so you can book a repair while it is still a small job. If a unit does fail without warning, our guide to emergency refrigeration repairs walks you through what to do next.

The Right Commercial Fridge Temperature

Before you start logging, it helps to know what you are aiming for. Here is a quick guide to the temperatures most UK food businesses work to.

• Fridges and chilled display cabinets: aim for 5°C or below. The legal maximum for most chilled food in England, Wales and Northern Ireland is 8°C, but setting your fridge lower gives you a safety margin for busy service and door openings.
• Walk-in cold rooms: the same target as fridges, 5°C or below, with the same 8°C upper limit for chilled food.
• Freezers: -18°C or colder. Readings a little higher during a defrost cycle or straight after a delivery are normal, as long as they recover quickly.
• Bottle and drinks fridges: these are not usually holding high-risk food, but logging them still helps you spot a failing unit before it spreads to the rest of your kit.

The commercial fridge temperature you set on the dial and the temperature inside the cabinet are not always the same. Thermostats drift, sensors age and controllers can be knocked. That is exactly why you check with a thermometer rather than trusting the display.

How Often Should You Fill In a Fridge Temperature Log?

For most businesses, twice a day is the sensible minimum:

• At opening, before any food is prepared or served, so you know the fridge has held overnight.
• At closing, so you know it has coped with the day’s trade before you leave it alone for the night.

Some businesses add a mid-shift check, particularly in hot weather, during very busy services, or for a unit that has been playing up. If you take a delivery of chilled or frozen goods, it is also good practice to check the temperature of the delivery itself and of the fridge it goes into once it has been loaded.

Consistency is more important than frequency. A log that is filled in at the same times every day by trained staff is far more useful than one that is completed in a rush at the end of the week.

What To Record in Your Fridge Temperature Log

Keep it simple so it actually gets done. Each entry should include:

• The date and time of the check.
• Which unit you checked (give each fridge and freezer a number or name, such as “Fridge 2 – prep” or “Bar freezer”).
• The temperature reading.
• The initials of the person who took it.
• Any action taken if the reading was out of range, and whether it was back within range when you rechecked.

That last point is the one inspectors look for most closely. A log full of perfect readings is good. A log that shows a problem, what was done and the follow-up check is even better, because it proves your system works.

How To Take an Accurate Reading

A temperature log is only as good as the readings in it. A few simple habits make a big difference:

• Use a probe thermometer. The display on the front of a fridge measures the air near the sensor, which can be very different to the food at the back of the shelf.
• Check the food, not just the air. Air temperature jumps around every time the door opens. Probing a food simulant (a small sealed pot of gel or water kept in the fridge) or a non-critical item gives a truer picture.
• Check your thermometer. Test it regularly in iced water (it should read close to 0°C) and in boiling water (close to 100°C), and note the check in your records.
• Clean the probe with an antibacterial wipe between items so you do not spread bacteria from one product to another.
• Avoid checking straight after a delivery or a long door opening, unless you are specifically checking a delivery. Give the unit a few minutes to settle.

What To Do If a Reading Is Too High

Every business will see a high reading at some point. What matters is how you respond. If a fridge reads above 5°C:

1. Recheck it. Make sure the door was not just opened, the unit is not mid defrost, and your thermometer is working.
2. Check the basics. Is the door closing properly? Is the seal intact? Are the vents blocked by stock? Is the fridge overloaded, or full of food that was put in while still warm?
3. Move high-risk food to another fridge that is within range if the reading is close to or above 8°C.
4. Decide on the food. If high-risk food has been above 8°C for longer than your food safety procedures allow, or you do not know how long, the safe choice is to throw it away and record what you discarded.
5. Record everything, then recheck the unit and write down the result.
6. Call an engineer if the fridge does not come back down, keeps drifting upwards over several days, or is running constantly to hold temperature.

Freezers have their own warning signs. Heavy ice on the walls or around the door is often a sign of a worn seal or a fault that will push temperatures up over time. Our article on why a freezer frosting up happens explains the common causes and fixes.

Spotting the Warning Signs in Your Log

Once you have a few weeks of readings, your log becomes a health check for your equipment. Look out for:

• A slow upward creep, such as a fridge that used to sit at 3°C now regularly reading 5°C or 6°C.
• Bigger swings than usual between opening and closing readings.
• One unit that is always the outlier compared with the others.
• Readings that are fine in the morning but poor by the evening, which often means the unit cannot keep up with a busy day.
• A unit that is noisier, warmer to the touch, or running all the time while still only just holding temperature.

Any of these is a good reason to have the unit checked. Catching a failing compressor, a refrigerant leak or a blocked condenser early is almost always cheaper and less stressful than an emergency call-out in the middle of service.

Paper or Digital Fridge Temperature Log?

Both work, as long as they are filled in properly. Here is how they compare at a glance:

• Paper logs are cheap, simple and easy to train staff on. The downsides are that sheets get lost or damaged, and it is easy to fill in a missed reading after the fact, which inspectors can often spot.
• Digital logs and wireless sensors record readings automatically, can alert you by text or app if a unit goes out of range overnight, and keep a tidy history for inspections. They cost more to set up, and someone still needs to act on the alerts.

For a small café with two or three fridges, a well designed paper sheet is often all you need. For a larger kitchen, a care home or a shop with lots of chilled display, automatic monitoring can pay for itself the first time it saves a cold room full of stock.

How Regular Servicing Keeps Your Log in the Green

Your fridge temperature log tells you when something is wrong. Regular servicing helps stop it going wrong in the first place. During a service, an engineer cleans condensers, checks door seals, tests controls and sensors, and looks for early signs of refrigerant leaks or wear. That keeps your units running efficiently, holding temperature more steadily and using less energy.

If you are not sure how often your equipment should be looked at, our guide to commercial refrigeration servicing explains what is included and how often most businesses need it.

A Simple Fridge Temperature Log Checklist

If you want to get started today, this is all you need:

• Number or name every fridge, freezer, cold room and chilled display.
• Set a target for each: 5°C or below for fridges, -18°C or colder for freezers.
• Get a reliable probe thermometer and check it regularly.
• Choose your format: a printed sheet, your food safety diary or a digital system.
• Check and record every unit at opening and closing, with initials.
• Write down any action taken and the result of the recheck.
• Review the log weekly for creeping temperatures or problem units.
• Keep your completed records somewhere safe so you can show them at inspection.

Need Help With a Fridge That Will Not Hold Temperature?

A fridge temperature log is one of the simplest tools you have for protecting your food, your customers and your reputation. Keep it simple, keep it consistent, and treat any unusual readings as an early warning rather than something to ignore.

If your log is showing a unit that keeps creeping up, or you would like your fridges, freezers and cold rooms serviced so they stay reliable, we are happy to help. Get in touch with our team to book a visit, or take a look at The Cold Management to see everything we offer.