Wondering how often to check fridge temperature in a food business? Learn risk-based frequencies, opening and closing checks, and when continuous sensors help.
Most Australian food businesses should check fridge and freezer temperatures at least twice a day, typically once when opening and once when closing, with a probe check of the food itself where practical. There is no single legal number written into Standard 3.2.2 of the Food Standards Code, but the standard requires you to keep cold potentially hazardous food at or below 5°C and frozen food frozen hard, and to be able to show you are doing so. How often you check is therefore risk-based: the higher the risk and the more valuable the stock, the more often you should look. This guide explains how to set a sensible checking frequency, why opening and closing checks matter, and when continuous sensors do the job better than a clipboard. What does the law actually require? The Food Standards Code does not prescribe an exact schedule. Instead, Standard 3.2.2 requires that food businesses take all practicable measures to keep potentially hazardous food at safe temperatures and, under the newer food safety management provisions, that certain businesses demonstrate temperature control. In practice, councils and Environmental Health Officers expect to see regular checks and records that prove your cold chain is under control. Twice daily is the common baseline that satisfies this expectation for most cafes, restaurants and takeaways. FSANZ provides an evidence tool to help businesses show how their practices meet the Code, and keeping a simple temperature record is one of the clearest forms of evidence you can offer. How often should you check? A risk-based schedule Use the nature of your food and equipment to set frequency. The table below is a practical starting point that you can adapt to your venue: Situation Suggested check frequency General fridges and cool rooms At least twice daily (open and close) Freezers At least once daily High-risk prep (raw meat, seafood, dairy) Twice daily plus a mid-service probe check Display and self-serve units Every few hours during trade New, faulty or heavily used equipment More often until proven reliable Continuous sensor units Automatic, with a daily glance at the log The principle is simple. When failure would put more food at risk, or when a unit has a history of drifting, check more often. When a unit is stable and lightly loaded, a standard twice-daily routine is usually enough. Why opening and closing checks matter Two checks a day are not arbitrary. They bracket your trading period and catch different kinds of failure. Opening check: Confirms the equipment held temperature overnight, when nobody is watching. A fridge that failed at 2 am is caught before you start prepping. Closing check: Confirms a busy service, with doors opening constantly, has not pushed a unit out of range. It also gives you a clean baseline before the quiet overnight hours. Recording both readings, with the time, the unit and the initials of the person checking, builds a continuous story of your cold chain. Digital temperature logs make this quick and remove the risk of a forgotten or back-filled paper sheet. When do you need extra checks? Beyond the routine, certain events should trigger an immediate check regardless of the schedule: After a power outage or an alarm has sounded. When you notice a door left open, a fridge working hard, or ice buildup. During very hot weather, when equipment strains to hold temperature. After a large delivery, when warm stock and repeated door openings raise the internal temperature. Following any maintenance, to confirm the unit is holding below 5°C again. These extra checks are exactly the moments manual routines tend to miss, because they happen between scheduled checks. Manual checks versus continuous sensors Twice-daily manual checks meet the baseline expectation, but they only tell you the temperature at two moments. A fridge can fail after the opening check, sit warm for hours and recover before the closing check, and the manual log would never show it. Continuous sensors close that gap by logging temperature around the clock and alerting you the moment a unit drifts above 5°C. Continuous monitoring is especially worthwhile for cool rooms, high-value stock and unattended overnight storage. It also lightens the daily load and produces an audit-ready history automatically. If you run several sites, centralised multi-venue monitoring lets you see every fridge across every location from one screen, and well-trained staff following a clear routine is the other half of the equation, which is why staff training records pair naturally with temperature control. How to run a check that actually means something A temperature check is only useful if it measures the right thing with an accurate instrument. Plenty of Australian kitchens tick a box twice a day yet still miss a failing fridge, because they read the door display, glance at the number and move on. A meaningful check takes a little more discipline but only a minute longer, and it is the difference between a record that protects you and one that simply looks tidy. Build these habits into every check: Probe the food, not just the air. Air temperature swings the moment a door opens. Slide a clean, sanitised probe between two sealed packages, or keep a dedicated container of water or gel in the unit as a permanent test item and probe that. This gives you the true temperature of the product, which is what Standard 3.2.2 actually cares about. Check the warm spots. Fridges are never a single temperature. Read near the door, the top shelf and anywhere airflow is blocked by overstocking, not just the coldest middle shelf. If the warmest point is at or below 5°C, the whole unit is safe. Record the number, not a tick. Write the actual reading, the unit, the time and your initials. A logged "4°C" tells a story over weeks; a tick tells an Environmental Health Officer nothing about whether the unit is slowly drifting. Act on anything above 5°C straight away. A check that finds a problem is only worth doing if it triggers a response. Isolate the food, verify, and record a corrective action. Your probe itself needs to be trustworthy, so calibrate it regularly using the ice-point test. Fill a cup with crushed ice, top it with cold water, stir, and insert the probe without touching the sides: an accurate thermometer reads 0°C, give or take about 0.5°C. Do this weekly, after any drop, and before an audit. A probe that reads 2°C in ice water has been quietly telling you fridges are colder than they really are. Pairing accurate manual checks with continuous temperature logging means the routine reading confirms what the sensor already watches around the clock, and both feed the same audit-ready history. Frequently asked questions Is twice a day enough for fridge temperature checks? For most low to medium risk venues, yes. Twice-daily opening and closing checks are the common baseline. High-risk operations, display units and unreliable equipment need more frequent checks, and continuous sensors are better again. What temperature should a commercial fridge and freezer be? Cold potentially hazardous food should be kept at or below 5°C, so fridges are usually set to hold that or slightly below. Freezers should keep food frozen hard, typically around minus 18°C. Do I have to write temperature checks down? Keeping records is the clearest way to demonstrate compliance to an EHO. While the exact requirement varies, a dated temperature log with the unit, reading and initials is strongly recommended and often expected. How often should I check freezers compared with fridges? Freezers are generally more stable, so once daily is often sufficient, whereas fridges holding food near the 5°C limit warrant at least twice-daily checks. Any freezer showing signs of thawing needs an immediate check. How often should I calibrate my probe thermometer? Check it against the ice-point test at least weekly, and also after any knock or drop and before an audit. An accurate probe reads 0°C in stirred iced water. If it drifts more than about 0.5°C, replace it or have it recalibrated, because every fridge check you take is only as reliable as the thermometer making it. Setting the right frequency is easier when the checking happens for you. FoodSafety HQ delivers digital temperature logs and continuous sensor alerts, so opening and closing checks are recorded in seconds and out-of-range fridges raise a flag automatically. Start a free trial from our pricing page to see how much of the clipboard work disappears.
Frequently asked questions
What does the law actually require?
The Food Standards Code does not prescribe an exact schedule. Instead, Standard 3.2.2 requires that food businesses take all practicable measures to keep potentially hazardous food at safe temperatures and, under the newer food safety management provisions, that certain businesses demonstrate temperature control. In practice, councils and Environmental Health Officers expect to see regular checks and records that prove your cold chain is under control. Twice daily is the common baseline that satisfies this expectation for most cafes, restaurants and takeaways.
When do you need extra checks?
Beyond the routine, certain events should trigger an immediate check regardless of the schedule:
Is twice a day enough for fridge temperature checks?
For most low to medium risk venues, yes. Twice-daily opening and closing checks are the common baseline. High-risk operations, display units and unreliable equipment need more frequent checks, and continuous sensors are better again.
What temperature should a commercial fridge and freezer be?
Cold potentially hazardous food should be kept at or below 5°C, so fridges are usually set to hold that or slightly below. Freezers should keep food frozen hard, typically around minus 18°C.
Do I have to write temperature checks down?
Keeping records is the clearest way to demonstrate compliance to an EHO. While the exact requirement varies, a dated temperature log with the unit, reading and initials is strongly recommended and often expected.
How often should I check freezers compared with fridges?
Freezers are generally more stable, so once daily is often sufficient, whereas fridges holding food near the 5°C limit warrant at least twice-daily checks. Any freezer showing signs of thawing needs an immediate check.
How often should I calibrate my probe thermometer?
Check it against the ice-point test at least weekly, and also after any knock or drop and before an audit. An accurate probe reads 0°C in stirred iced water. If it drifts more than about 0.5°C, replace it or have it recalibrated, because every fridge check you take is only as reliable as the thermometer making it.