How to Clean a Coolroom or Fridge

To clean a coolroom or fridge, empty it in the right order, wash all surfaces with warm soapy water, rinse, then apply a food-safe sanitiser and allow the contact time. Pay special attention to door seals, shelves, drains and the floor, keep stored food out of the temperature danger zone throughout, and return everything only once surfaces are dry. Do a quick clean daily and a deep clean weekly, with a full defrost as needed. Key takeaways: Clean, then sanitise: detergent and warm water remove grime, a food-safe sanitiser then reduces bacteria to safe levels.. Keep stored food safe throughout by using the 2-hour/4-hour rule and cold holding at or below 5 degrees C.. Seals, shelves, drains and the floor are the spots most often missed and where mould and spills build up.. Do a quick wipe-and-check daily, a thorough clean weekly, and a full empty-and-defrost clean on a set schedule.. Record what you clean and when so you can show your cleaning program to an inspector.. Suggested cleaning frequency: Task, Frequency, Notes. Wipe spills and door handles, check temperature — Daily — Deal with spills as they happen; log temperatures.. Wipe shelves and visible surfaces, wipe seals — Daily to weekly — Prevents build-up between deep cleans.. Full empty, wash, sanitise interior and seals, clear drain — Weekly — Adjust to your volume and the type of food stored.. Defrost (where not auto-defrost) and deep clean — As needed — When ice builds up or per your cleaning schedule.. Coil and refrigeration service — Periodically — Use a qualified technician; follow manufacturer advice.. Why coolroom and fridge cleaning matters A coolroom or fridge keeps food cold, but the cold does not kill bacteria, mould or the organisms that cause spoilage. It only slows them down. Spills, drips from raw meat, condensation and food debris build up on shelves, seals and floors, creating a reservoir for cross-contamination and off odours that taint stored food. Under the Food Standards Code, food businesses must keep food premises and equipment clean and in good working order, and cold potentially hazardous food must be held at or below 5 degrees C. A structured cleaning routine protects both requirements: it keeps surfaces hygienic and helps the unit run efficiently so it holds temperature. Dirty condenser coils and blocked drains make a unit work harder, run warmer and fail sooner. Clean versus sanitise: know the difference These are two separate steps and both matter. Cleaning uses detergent and warm water to physically remove visible grease, food and grime. Sanitising then reduces the remaining bacteria to a safe level, using either heat or a chemical sanitiser. Sanitiser does not work properly on a dirty surface, so you must always clean first, rinse, then sanitise. Follow the manufacturer's dilution and, importantly, the contact time on the label. Sanitiser needs to sit wet on the surface for the stated time to work. Clean: warm water plus detergent to lift and remove soil.. Rinse: remove loosened soil and detergent residue.. Sanitise: apply a food-safe sanitiser at the correct dilution and leave for the full contact time.. Air-dry where possible, or use single-use paper rather than a shared cloth that can re-contaminate.. Before you start: protect the stored food The biggest risk during cleaning is letting cold food warm up. Plan the job so food spends as little time as possible out of refrigeration, and apply the 2-hour/4-hour rule to any potentially hazardous food that comes out. Under two hours in the temperature danger zone (5 to 60 degrees C) it can go back in; two to four hours it should be used promptly; beyond four hours it should be discarded. For a deep clean, move stock to another coolroom, a fridge or insulated containers with ice or ice bricks. Never rest raw food on top of ready-to-eat food while shuffling stock. Gather your gear first so you are not hunting for cloths mid-job. Move perishable stock to alternative refrigeration or insulated containers before you start.. Track time out of temperature control using the 2-hour/4-hour rule.. Keep raw and ready-to-eat foods separated while relocated.. Assemble detergent, food-safe sanitiser, colour-coded cloths, gloves, a scraper and a probe thermometer first.. Cleaning the door seals Rubber door seals (gaskets) are the single most overlooked part of any coolroom or fridge, and one of the most important. They trap food debris, spills and moisture in their folds, which grows mould and can transfer to food when the door opens. Damaged or dirty seals also let cold air escape, so the unit runs warm. Wipe seals every clean, and at least weekly pull back the folds and clean inside them. Use warm soapy water and a soft brush or cloth, rinse, then sanitise. Avoid harsh abrasives or neat bleach that can perish the rubber. While you are there, check the seal is intact and still forms a tight closure; a seal that no longer seals needs replacing. Drains, floors and hard-to-reach spots Coolrooms have a floor drain and, often, an internal or external condensate drain that carries away defrost water. These block with food debris and grease, causing pooling water on the floor, which is both a slip hazard and a bacterial breeding ground. Flush and clear the drain regularly and keep the floor clean and dry, working detergent into corners and under shelving where spills collect. Do not forget the areas people skip: the underside of shelves, shelf brackets, the ceiling and light fittings, the door handle and any curtain strips. Condenser and evaporator coils also need periodic cleaning, but leave anything electrical or refrigeration-specific to a qualified technician. Clear the floor drain and any condensate drain of debris so water flows away.. Keep floors dry to prevent slips and microbial growth.. Clean shelf undersides, brackets, corners, the ceiling and door handles.. Have coils and refrigeration components serviced by a qualified technician.. Choosing and using chemicals safely Use only food-safe detergents and sanitisers and follow the label. Two things ruin most sanitising: wrong dilution and not leaving it on long enough. Too weak and it will not work; too strong wastes product and can leave residue on food-contact surfaces. Store chemicals away from food, clearly labelled and never in unmarked drink bottles. Keep the Safety Data Sheet for each product on site and provide staff with the right personal protective equipment, such as gloves. Never mix chemicals, particularly bleach-based and acid-based products, which can release dangerous gases. After sanitising food-contact surfaces, follow the product's guidance on whether a final rinse is required. Checklist: Stock moved to alternative refrigeration or insulated containers. 2-hour/4-hour rule tracked for potentially hazardous food. Shelves and removable parts washed, sanitised and dried. Interior walls, ceiling, floor and door washed top to bottom. Door seals cleaned inside the folds and checked for damage. Floor and condensate drains cleared and flowing. Sanitiser applied at correct dilution and left for full contact time. Surfaces dry before reassembly and restocking. Unit confirmed at or below 5 degrees C before food returned. Clean recorded in your cleaning schedule or log. Common mistakes: Sanitising over a dirty surface without cleaning and rinsing first, so the sanitiser cannot work.. Wiping sanitiser off before the label's contact time has elapsed.. Leaving door seals and their folds uncleaned, allowing mould and spills to build up.. Letting cold food sit out too long and drift into the temperature danger zone.. Using neat bleach or metal scrapers that damage seals and surfaces.. Restocking onto wet surfaces, trapping moisture that encourages mould.. Ignoring blocked drains, causing pooled water, slips and bacterial growth..