Step-by-step response for a failed fridge or coolroom: apply the 2-hour/4-hour rule, decide what to salvage or discard, protect stock and record the incident…
If a fridge or coolroom fails, act fast: keep the door shut, check food temperatures with a calibrated probe, and start applying the 2-hour/4-hour rule to any potentially hazardous food. Food that has been above 5°C for under two hours can go back to safe cold storage or be used; between two and four hours it must be used immediately; over four hours it must be discarded. Record everything and move stock to a working unit. Key takeaways: Keep the door closed and check food temperature with a calibrated probe before making any decision – air temperature alone is not enough.. Apply the 2-hour/4-hour rule to potentially hazardous food: under 2 hours above 5°C is safe to re-refrigerate or use; 2–4 hours use now; over 4 hours discard.. When in doubt, throw it out – you cannot see, smell or taste the bacteria that cause food poisoning.. Move stock to a working fridge, coolroom, freezer or esky with ice as your first practical action.. Record the failure, temperatures, times and what you discarded – an authorised officer may ask to see it.. The 2-hour/4-hour rule at a glance: Total time above 5°C (cumulative), Action for potentially hazardous food. Less than 2 hours — Refrigerate below 5°C again, or use straight away. 2 to 4 hours — Use immediately – do not return it to the fridge. More than 4 hours — Discard. First response: don't open the door The moment you notice a fridge or coolroom is not holding temperature, resist the urge to keep opening the door to inspect the food. A closed, well-insulated coolroom can hold cold air for a surprisingly long time, and every door opening lets cold air spill out and warm air rush in. Your priority is to slow the temperature rise while you assess the situation and find somewhere to move the stock. Confirm the unit really has failed – check that it is switched on at the wall, that a circuit breaker or RCD has not tripped, and that the thermostat has not been knocked or set incorrectly. Sometimes what looks like a breakdown is a power or setting issue you can fix in seconds. Keep doors shut except when moving food out.. Check the power supply, plug, breaker and thermostat first.. Note the time you discovered the problem – the clock for the 2-hour/4-hour rule starts here if you cannot pinpoint when the unit failed.. Alert your food safety supervisor or manager immediately.. Measure the food, not just the air A digital display reading 12°C tells you the air is warm, but it does not tell you how warm the food is. Dense, packed and liquid foods hold their temperature far longer than the surrounding air, so the actual risk depends on the food's core temperature. Use a clean, sanitised, calibrated probe thermometer (accurate to within ±1°C) and measure the centre of several representative items – not just the item nearest the door. Under the Food Standards Code, potentially hazardous food must generally be kept at or below 5°C, or at or above 60°C, to keep bacteria from multiplying to unsafe levels. The temperature you record, together with how long the food has been out of safe control, drives every decision that follows. Sanitise the probe between items to avoid cross-contamination.. Measure the core of dense items (mince, casseroles, milk, soft cheeses).. Record the highest reading you find – decide on the worst case.. Potentially hazardous foods include meat, poultry, seafood, dairy, cooked rice and pasta, prepared salads, and cut fruit and vegetables.. Applying the 2-hour/4-hour rule The 2-hour/4-hour rule is the nationally recognised method for judging potentially hazardous food that has been in the temperature danger zone (above 5°C and below 60°C). It is based on the total accumulated time the food has spent in that zone across its whole life – including any time during delivery, preparation or a previous excursion – not just this single breakdown. If you genuinely do not know when the unit failed, you must assume the worst and treat the food as having been in the danger zone for the longer period. This is why noting the time you found the problem, and knowing when the unit was last confirmed cold, matters so much. Less than 2 hours in the danger zone: refrigerate below 5°C again or use straight away.. 2 to 4 hours in the danger zone: use immediately – do not put it back in the fridge.. More than 4 hours in the danger zone: discard it.. The time is cumulative over the food's life, so factor in any earlier time out of the fridge.. Salvage or discard: making the call Once you know the temperatures and the time, sort the stock into three groups: keep and re-refrigerate, use now, or discard. Be conservative – the bacteria and toxins that cause food poisoning cannot be seen, smelled or tasted, so "it looks fine" is never a safe basis for keeping food. Some products deserve extra caution: ready-to-eat foods that will not be cooked again (deli meats, soft cheeses, prepared salads, sushi, cut melon) carry higher risk because there is no further cook step to reduce bacteria. High-risk or expensive borderline items are not worth the gamble; if you cannot confidently place an item in the safe window, discard it. Frozen food that is still hard or has only partly thawed with ice crystals present can usually be refrozen, though quality may drop; food that has fully thawed and warmed should be treated as chilled food under the rule. Keep: core temperature stayed at or below 5°C, or under 2 hours in the danger zone.. Use now: 2–4 hours in the danger zone – cook or serve promptly, don't re-chill.. Discard: over 4 hours, unknown timing you can't bound, or any doubt about ready-to-eat items.. When in doubt, throw it out.. Protecting the rest of your stock While you are assessing, get the affected food into a safe environment as quickly as practicable. The faster you restore cold control to salvageable stock, the less danger-zone time it accumulates. Have a fallback plan before an emergency happens: know which other units have spare capacity, keep clean eskies and ice or frozen gel packs on hand, and have contact details for a refrigeration technician and, if relevant, a supplier who can lend cold space. Do not overload a working fridge or coolroom so heavily that it too struggles to hold 5°C – that simply spreads the problem. If a large volume of stock is at risk, prioritise the highest-risk ready-to-eat foods first. Move food to another working fridge, coolroom or freezer with spare capacity.. Use eskies with plenty of ice or frozen gel packs as a short-term buffer.. Don't pack a working unit so full it can't maintain 5°C.. Call a refrigeration technician early – don't wait to see if it recovers.. Record the incident Good records protect your business and are part of running a compliant food operation. Document what happened while the details are fresh: this shows an authorised officer that you identified the problem and responded correctly, and it helps you spot recurring equipment faults. Keep the record with your temperature logs or food safety program paperwork. If your business handles high-risk food or operates under a food safety program, follow whatever corrective-action recording your program specifies. Requirements for records and food safety programs vary by business type and location, so confirm with your state or territory regulator and local council what applies to you. Date and time the failure was found, and when the unit was last known to be cold.. Food temperatures measured and the estimated time in the danger zone.. Decisions made – what was kept, used or discarded, and the quantity discarded.. Corrective action taken (stock moved, technician called) and the repair outcome.. Name of the person who managed the response.. Preventing the next breakdown Every breakdown is a prompt to reduce the chance of the next one. Most cold-chain failures are foreseeable: overloaded units, blocked vents, worn door seals, dusty condenser coils, and thermostats slowly drifting out of range. A short routine of daily temperature checks and periodic servicing catches most problems before food is at risk. Consider a monitoring approach that alerts you out of hours, when a unit is most likely to fail unnoticed – a coolroom that dies on a Friday night can waste a weekend's stock before anyone opens up on Monday. Record fridge and coolroom temperatures at least daily and act on drift.. Keep door seals, vents and condenser coils clean and in good repair.. Don't overload units or block internal airflow.. Service refrigeration equipment on a regular schedule.. Consider temperature alarms or remote monitoring for after-hours cover.. Checklist: Confirmed it's a genuine failure (power, breaker, thermostat checked). Doors kept closed; time of discovery noted. Food core temperatures measured with a calibrated probe. Cumulative danger-zone time estimated (including earlier excursions). 2-hour/4-hour rule applied to each potentially hazardous item. Salvageable stock moved to a working unit or esky with ice. Discarded food removed and quantity recorded. Incident, temperatures, times and decisions documented. Refrigeration technician contacted. Unit confirmed holding 5°C or below before restocking. Common mistakes: Judging safety by the air-temperature display instead of measuring the food's core.. Repeatedly opening the door to check, letting cold air escape and warming the food faster.. Ignoring earlier danger-zone time – the 2h/4h clock is cumulative over the food's whole life.. Putting food that's been out 2–4 hours back in the fridge instead of using it immediately.. Keeping food because it 'looks and smells fine' – you can't detect the bacteria that make people sick.. Overloading a working fridge with rescued stock so it too can't hold 5°C.. Failing to record the incident, leaving no evidence of correct corrective action..
Fridge or coolroom failure: step-by-step response
Check power, plug, breaker and thermostat in case it's a quick fix. If the unit really has failed, keep doors closed to slow the temperature rise and note the time you found it.
Using a clean, calibrated probe, measure the centre of several representative items. Record the warmest reading – you'll base your decisions on the worst case, not the air temperature on the display.
Work out how long the food has been above 5°C, including any earlier time out of refrigeration. If you can't establish when the unit failed, assume the longer period and treat the food conservatively.
Under 2 hours: re-refrigerate or use. 2–4 hours: use immediately without re-chilling. Over 4 hours: discard. Discard any ready-to-eat item you're unsure about.
Transfer food you're keeping into another working fridge, coolroom, freezer or an esky with ice, prioritising high-risk ready-to-eat foods. Don't overload the backup unit.
Document the failure, temperatures, times, decisions and quantity discarded. Call a refrigeration technician, and confirm the unit is holding 5°C or below before restocking it.
Frequently asked questions
The fridge display says 10°C but the food still feels cold – is it safe?
Don't rely on feel or the display. Measure the core temperature of several items with a calibrated probe. Dense and packed foods stay cold longer than the air, so the food may still be at or below 5°C even when the air is warm – or it may not be. The probe reading, plus how long it's been above 5°C, decides whether you keep, use now or discard it.
I don't know when the coolroom failed overnight – what should I do?
Assume the worst case. If you can't establish when it stopped holding temperature, you must treat the food as having been in the danger zone for the longer period. In practice that usually means discarding potentially hazardous food, particularly ready-to-eat items. This is exactly why daily temperature checks and after-hours alarms are so valuable – they narrow the window of uncertainty.
Can I refreeze food that partly thawed when the freezer failed?
Food that is still hard, or only partly thawed with ice crystals still present, can generally be refrozen, though quality and texture may suffer. Food that has fully thawed and warmed should be treated as chilled food and assessed under the 2-hour/4-hour rule – use it now if within the safe window, or discard it. Never refreeze food that has warmed into the danger zone.
Does the 2-hour/4-hour rule apply to all foods?
It applies to potentially hazardous foods – those that need temperature control to keep bacteria from growing, such as meat, poultry, seafood, dairy, cooked rice and pasta, prepared salads, and cut fruit. Shelf-stable items like canned goods, dry goods and whole intact produce aren't affected by a fridge failure in the same way. Focus your assessment on the potentially hazardous stock.
Do I have to record a fridge breakdown?
Keeping a record is strongly recommended and, depending on your business type and food safety program, may be expected as part of your corrective-action documentation. A record shows an authorised officer you responded correctly and helps you track recurring faults. Requirements vary, so confirm with your state or territory regulator and local council what applies to your operation.