How I Set Up the Freezer Temperature Check Template with Customers in Pilla

I'm Liam Jones, NEBOSH-qualified health and safety consultant, Level 3 Food Safety, and founder of Pilla. This is how I approach freezer temperature checks in a food business, based on close to twenty years in frontline operations and advising hundreds of businesses on compliance. You can email me directly; I read every email.

Freezer checks get less attention than fridge checks, and that's exactly why things go wrong. I've walked into kitchens where the freezer temperature log hasn't been filled in for a month. The freezer was fine. But the one time it wasn't, nobody noticed for three days, and the business lost close to two thousand pounds of stock. Frozen food is expensive. A chest freezer full of proteins, portioned sauces, and ice cream can represent a significant chunk of your weekly spend.

The check itself is straightforward. Freezers are more stable than fridges, they don't get opened as often, and the thermal mass of frozen stock holds the temperature steady. But that stability can breed complacency. When something does go wrong, a failing compressor, a door seal that's perished, an ice build-up choking the vent, you need to catch it before you lose the contents. That's what this article covers. I'll explain what Regulation (EC) 852/2004 requires, what your EHO expects, how I set up the check as a daily work activity in Pilla, and the practical details that matter when you're running it.

Key Takeaways

  • What temperature should a freezer be? The target is -18°C or below under Regulation (EC) 852/2004. Most businesses aim for -20°C to -22°C to give themselves a margin
  • How often do you need to check? A minimum of once per day. You should also check after deliveries, power outages, and defrost cycles
  • How do you set it up in Pilla? Use the work template below, set it to run twice daily for each freezer unit. Check once at the start of the day and once at the end. Each unit needs its own reading
  • How do you automate the follow-up? Set up Poppi to track completion and chase anyone who hasn't done their check

Article Content

Understanding What's Required of You

Freezer temperature monitoring falls under Regulation (EC) 852/2004. The regulation requires food business operators to maintain the cold chain for frozen food and keep records that demonstrate compliance. In practice, that means your freezers need to hold food at -18°C or below, and you need documented evidence that you're checking.

The -18°C figure is an international standard, adopted across the UK and EU. At this temperature, bacterial growth stops completely. Bacteria don't die, they go dormant, but they can't multiply, produce toxins, or cause food to deteriorate. That's the difference between freezing and refrigeration. A fridge slows bacteria down. A freezer stops them.

Most businesses I work with aim for -20°C to -22°C. That gives you a buffer. If a freezer is running at -18°C exactly, one busy delivery session with the door open for five minutes can push it above the threshold. Running a couple of degrees colder absorbs those fluctuations without breaching the limit.

Freezers are more forgiving than fridges in one important way: the thermal mass of frozen food acts as a temperature reservoir. Even if the compressor fails, a full freezer can hold below -18°C for several hours. A half-empty freezer loses temperature much faster. I've seen businesses lose stock from a half-empty chest freezer overnight when the compressor packed in, while a fully stocked upright next to it held fine until the engineer arrived the next morning.

But there's a risk that cuts the other way. Because freezers are stable, problems develop slowly. A failing door seal, a gradual refrigerant leak, a blocked condenser coil, these push the temperature up by a degree or two over weeks. Without daily checks, you won't notice until the compressor is running constantly or food starts showing signs of thawing.

Your EHO expects to see daily temperature records. They'll also want to see corrective actions when something went wrong: what happened, what food was affected, whether anything was moved or discarded. The EHO knows that freezers rarely have dramatic failures. What they're looking for is evidence that you're monitoring the gradual drift, not just checking a box.

Setting It Up as a Work Activity

The freezer temperature check template in Pilla has a single repeating element: a number input for each freezer. You add one row per unit, label it with your freezer identifier (Freezer 1, Walk-in Freezer, Ice Cream Freezer, whatever you use), and record the temperature reading against it.

Create a work activity that runs twice daily for each freezer unit and assign it to the team responsible for opening and closing. Check once at the start of the day and once at the end. Tag it with "Food Safety Checks" so it groups with your other monitoring tasks and Poppi can track them as a set. Each unit needs its own reading, so if you have multiple freezers, each one should be recorded separately.

What I'd want to see when reviewing this:

Every freezer in your operation should have its own row, labelled consistently. "Kitchen Freezer", "Storeroom Freezer", "Ice Cream Freezer" is better than "Freezer 1", "Freezer 2", "Freezer 3", because anyone reading the records can tell immediately which unit had the problem. The label in Pilla should match what's written on the physical unit.

Readings should sit between -18°C and -22°C on a normal day. Some variation is fine. A reading of -19°C one morning and -21°C the next just reflects door usage and defrost cycles. A reading above -18°C should trigger a corrective action note explaining what happened and what was done. A reading above -15°C is a serious concern and needs immediate investigation. If a reading is above -10°C, you're looking at possible stock loss and should be assessing the food.

Common mistakes I see:

Not checking every freezer. Most commercial kitchens have at least two, sometimes four or five. The chest freezer in the storeroom at the back of the building gets forgotten because it's out of sight. That's usually the one that fails, precisely because nobody opens it often enough to notice the problem.

Recording the built-in display temperature without questioning it. Freezer displays are more reliable than fridge displays because the food and air temperatures are closer together at such low temperatures. But they still drift over time. I'd recommend verifying against a probe thermometer at least once a month, and using the probe if you suspect a problem.

Not recording what was done when a temperature was high. A reading of -14°C with no note attached tells the EHO nothing. Was food moved? Was the cause identified? Was the engineer called? Your records should tell the story. Good records have occasional problems followed by clear corrective actions. That's what demonstrates proper monitoring.

Ignoring excessive ice build-up and treating it as normal. Frost inside the freezer means warm, moist air is getting in, usually through a failing door seal. The ice itself insulates the evaporator coils and makes the unit work harder. Left unchecked, the temperature creeps up and the compressor runs constantly until it burns out. Fix the seal. Don't just chip the ice off.

Automate the Follow-Up with Poppi

We're still finalising the best automation setup for food safety checks. Once that's ready, this section will show you how to use Poppi to track completion and chase anyone who hasn't done their check.