Log inStart Free Trial
Fridge & Freezer Temperatures

Fridge or Freezer Temperature Failure: What to Do & When to Discard Food

Fridge or Freezer Temperature Failure: What to Do & When to Discard Food

Every food business will experience a fridge or freezer failure at some point: a power cut, a compressor breakdown, a door left open overnight, or a thermostat malfunction. What matters is how you respond. The wrong decision can mean serving unsafe food to customers. Equally, panicking and discarding everything unnecessarily costs money. This guide gives you a clear, step-by-step process for assessing the situation, deciding what to keep and what to discard, and documenting everything properly.

Key takeaways

A closed full fridge stays below 8C for 2-4 hours; a closed full freezer stays below -18C for 24-48 hours
For fridge failures: discard high-risk food that has been above 8C for more than 4 hours
For freezer failures: food still containing ice crystals and below 5C can be refrozen; fully thawed food above 5C must be cooked immediately or discarded
Document every detail of the failure, your assessment, and decisions made for EHO and insurance purposes

Immediate Response: Assess the Situation

When you discover a fridge or freezer at the wrong temperature, the first step is to gather information. What is the current temperature reading? How long has the unit been above the safe limit? Was the failure caused by a power cut (check other appliances), a mechanical fault, or human error (door left open)? If you have a data logger, check the temperature history to determine exactly when the temperature started rising and how high it went. If you do not have a logger, you need to estimate based on available evidence. A fridge full of food that has lost power will typically stay below 8C for 2-4 hours if the door remains closed. A full freezer will stay below -18C for approximately 24-48 hours if the door remains closed, or 12-24 hours if half full. These are estimates only. Do not open the door unnecessarily during a power cut, as this accelerates warming. Once power returns, check the temperature and physically assess the food before making decisions.

Fridge Failure: What to Keep and What to Discard

For a fridge failure, the critical threshold is 8C. If the food temperature has not exceeded 8C and the duration was less than 4 hours, the food is generally safe. Return it to correct temperature as quickly as possible and use it promptly. If food has been above 8C for more than 4 hours, high-risk items must be discarded. High-risk items include: cooked meats, dairy products, prepared salads, sandwiches, seafood, cooked rice, and any food containing these ingredients. Low-risk items such as hard cheeses, butter, unopened condiments, whole fruits, and root vegetables can generally tolerate a brief period above 8C. However, assess each item individually. If anything looks, smells, or feels wrong, discard it. When in doubt, throw it out. The cost of discarding food is always less than the cost of a food poisoning incident.

Freezer Failure: Assessment and Decision-Making

Freezer failures require a more nuanced assessment because frozen food takes longer to thaw. Check food items physically: are they still hard and frozen? Do they still contain visible ice crystals? Is there liquid pooling in the packaging? Food that is still hard and frozen (below -12C) can be kept in the freezer once it returns to -18C. Food that has partially thawed but still contains ice crystals and is below 5C can be refrozen, but quality will be reduced. Mark these items clearly and use them first. Food that has fully thawed and reached above 5C must not be refrozen. It can be cooked immediately and then refrigerated for use within 24 hours, or it must be discarded. Raw meat and fish that have fully thawed above 5C should be discarded unless they can be cooked immediately to 75C core temperature. Never refreeze raw meat or fish that has fully thawed.
Fridge & Freezer Temperatures

Automate your temperature monitoring

Paddl tracks fridge, freezer, cooking, and hot-holding temperatures digitally. Automatic alerts when readings are out of range, with timestamped records EHO inspectors trust.

Start free trialSee equipment features

Documentation and Reporting

Document everything about the failure, your assessment, and your decisions. Record: the date and time the failure was discovered, the temperature reading at discovery, the estimated duration of the failure (from data logger or best estimate), the cause of the failure (power cut, mechanical fault, human error), every food item assessed and the decision made (kept, refrozen, cooked, or discarded), the temperatures of specific food items checked, who made the assessment, and when the unit returned to the correct temperature. This documentation protects you in two ways. First, it demonstrates to an EHO that you responded competently to the incident. Second, it provides evidence for insurance claims if the failure was caused by equipment breakdown and the loss is significant. If the failure was caused by a mechanical fault, arrange repair and consider whether a temporary replacement or additional unit is needed to prevent recurrence.

What to do next

Create a temperature failure response procedure

Write a one-page procedure for staff to follow when they discover a fridge or freezer at the wrong temperature. Include the assessment steps, discard criteria, and who to contact.

Keep a spare thermometer accessible

Ensure a calibrated probe thermometer is always available for staff to check food temperatures during an equipment failure, even if the main monitoring equipment is also affected.

Identify a contingency plan for equipment failure

Know where you can temporarily store food if a unit fails: another fridge, a neighbouring business, or a hired temporary unit. Have contact details for emergency refrigeration hire readily available.

Common mistakes to avoid

Mistake
Discarding everything without checking food temperatures first
Instead
Assess each item individually. Food that has stayed below 8C (fridge) or below -12C (freezer) is likely safe. Only discard what has genuinely exceeded safe temperatures for extended periods.
Mistake
Refreezing food that has fully thawed above 5C
Instead
Fully thawed food above 5C must be cooked immediately to 75C or discarded. Refreezing it does not make it safe, as bacterial growth that occurred during thawing is not reversed by refreezing.

Frequently asked questions

How long does food last in a fridge without power?

A full fridge with the door kept closed will generally maintain a safe temperature (below 8C) for 2-4 hours. A half-empty fridge will warm up faster. Do not open the door during the power cut unless necessary.

Can I refreeze food after a freezer failure?

It depends on the state of the food. Items still hard and frozen can be kept. Items with ice crystals and below 5C can be refrozen but should be used first due to quality loss. Fully thawed items above 5C cannot be refrozen and must be cooked immediately or discarded.

Do I need to report a fridge or freezer failure to the council?

You do not need to proactively report a temperature failure to your local authority unless it resulted in food being served that may have been unsafe. However, you must document the incident fully and have records available for the next EHO inspection.

Related articles

Fridge & Freezer Temperatures

What Temperature Should a Fridge Be? UK Food Business Requirements

Fridge & Freezer Temperatures

What Temperature Should a Freezer Be? Commercial & Legal Requirements

Fridge & Freezer Temperatures

Fridge Temperature Monitoring: How Often, How to Record & What EHOs Check

Keep exploring

Related resources

How-To Guides

How to Set Up Temperature Monitoring

Glossary

Temperature Control in Food SafetyThe Danger Zone (Temperature)

UK Regulations

Food Safety (Temperature Control) Regulations 1995

Paddl Features

EquipmentRoutines

Free Templates

Fridge & Freezer Temperature Log

Compliance Risks

Customer Gets Food Poisoning

Need expert help with your HACCP system?

Our hospitality consultants can review your HACCP plan, identify gaps, and help you build a system that satisfies EHO inspectors.

Talk to a consultant

Manage Temperature Control digitally

Paddl helps UK hospitality businesses automate temperature control compliance. AI-generated plans, digital records, and inspection-ready documentation.

Start free trialSee Temperature Control features
Fridge or Freezer Temperature Failure: What to Do & When to Discard Food | Temperature Control | Paddl | Paddl