Spring is the perfect time for a comprehensive kitchen deep clean. After the intensity of winter service, the Christmas rush, and the quieter months of January and February, grease, grime, and general wear accumulate in areas that routine daily cleaning does not reach. A thorough spring deep clean is not just about aesthetics — it directly impacts food safety, pest prevention, equipment longevity, and your food hygiene rating. This checklist guides you through every area of your kitchen, ensuring nothing is overlooked.
Planning Your Deep Clean
A successful deep clean requires proper planning. Choose a date when the kitchen can be closed or operate at minimal capacity — attempting a deep clean during normal service is counterproductive and potentially unsafe. Create a task list, assign responsibilities, and ensure you have all necessary cleaning chemicals, equipment, and protective gear before you begin. Order replacement filters, seals, or gaskets in advance if you know they will be needed. Allow a full day for a small kitchen and two to three days for a larger operation. Brief your team on the plan and their specific roles.
Cooking Equipment
Start with your cooking equipment, as this typically requires the most intensive cleaning. Your deep clean checklist should cover:
- Ovens and ranges — remove shelves, clean interior with appropriate oven cleaner, degrease exterior, check door seals for integrity
- Fryers — drain, boil out with specialist fryer cleaner, scrub interior, clean exterior and surrounding splashback areas
- Grills and salamanders — remove grates, soak and scrub, clean drip trays, degrease the body
- Microwaves — clean interior thoroughly (food splatter harbours bacteria), clean exterior and door seal
- Bain-maries and hot-holding units — descale, clean water wells, sanitise food containers
Refrigeration Units
Refrigeration is critical to food safety, and deep cleaning your fridges and freezers extends their lifespan and improves efficiency:
- Empty each unit completely, discard any out-of-date stock, and check use-by dates on remaining items
- Remove shelves and drawers, wash with hot soapy water, and sanitise
- Clean interior walls, ceiling, and floor of the unit
- Inspect and clean door seals — damaged seals allow warm air in and increase running costs whilst compromising food safety
- Vacuum or brush condenser coils (usually at the back or underneath) to maintain cooling efficiency
- Check and calibrate thermometers, verifying that each unit maintains the correct temperature (below 5 degrees Celsius for fridges, minus 18 degrees Celsius or below for freezers)
Extraction and Ventilation Systems
Extraction canopies and ductwork accumulate grease over time, creating both a fire hazard and a food safety risk (grease dripping into food). Remove and clean or replace grease filters. Wipe down canopy surfaces with a degreaser. Check that extraction fans are operating correctly. If your ductwork has not been professionally cleaned within the past 12 months, arrange for a specialist extraction cleaning company. Keep the certificate of cleaning — EHOs frequently ask to see it.
Walls, Floors, and Ceilings
Structural surfaces are often neglected during routine cleaning. During your deep clean, wash all walls with a suitable detergent, paying attention to areas behind equipment and around splashback zones. Check for signs of damage — cracked tiles, peeling paint, or damaged coving can harbour bacteria and are common EHO findings. Clean ceiling tiles or panels and replace any that are stained or damaged. Scrub floors thoroughly, including under and behind equipment, and check floor drains are clear and flowing freely. Blocked drains attract pests and create unpleasant odours.
Storage Areas
Empty all dry storage shelving, clean the shelves, and check for signs of pest activity (droppings, gnaw marks, webbing). Inspect all stored products for damage or expiry. Reorganise storage following first-in-first-out principles. Ensure that all items are stored off the floor (a minimum of 15 centimetres clearance is recommended) and away from walls to allow cleaning access and airflow. Chemical storage must be separate from food storage, in a clearly labelled area.
Handwashing Facilities
Check every handwash basin in your kitchen. Verify that hot and cold water flows correctly, soap dispensers are filled and functioning, paper towel dispensers are stocked, basins are clean and free from items stored in or on them (a common EHO finding), and waste bins are emptied and clean. Handwash basins must be accessible and used exclusively for handwashing — they must never be used for food preparation, washing equipment, or disposing of liquids.
Documenting Your Deep Clean
A deep clean that is not documented is a missed opportunity. Record the date of the deep clean, the areas covered, who carried out the work, any issues identified and the corrective actions taken (such as replacing damaged seals or arranging pest control), and before-and-after photographs. This documentation serves as evidence of your commitment to food safety and can be invaluable during an EHO inspection. Use our food hygiene rating improvement checklist to ensure your kitchen meets the standards EHOs assess. For professional guidance on improving your hygiene rating or preparing for an inspection, contact our consulting team or take our free risk assessment to identify areas for improvement.
Frequently Asked Questions
How often should a commercial kitchen have a deep clean?
At minimum, a full deep clean should be carried out twice a year — typically in spring and autumn. High-volume kitchens may benefit from quarterly deep cleans. Extraction systems should be professionally cleaned at least annually, with more frequent cleaning for heavy-use operations.
Should I hire a professional cleaning company for the deep clean?
For extraction ductwork, professional cleaning is strongly recommended due to the fire risk and specialist equipment required. For the rest of the kitchen, a well-organised in-house team can achieve excellent results, provided they have the right chemicals, equipment, and enough time. Professional cleaning companies are worth considering for larger operations or when your team lacks the capacity.
Will a deep clean improve my food hygiene rating?
A deep clean alone will not guarantee a higher rating, as EHOs assess food safety management systems and confidence in management alongside structural cleanliness. However, the structural condition of your kitchen is one of the three pillars of the food hygiene rating scheme, so a visibly clean, well-maintained kitchen makes a strong impression and addresses one of the key assessment areas.
Written by Carren Amoli, BSc (Hons), RSPH Registered
