Commercial kitchen extraction systems work hard to remove heat, smoke, grease and airborne contaminants. Without planned maintenance, common failures can affect airflow, cleanliness, fire- risk management and system performance. This guide highlights five maintenance problems that can occur in commercial extraction systems and practical steps to help 5 Common Failures in Commercial Kitchen Extraction Maintenance and How to Prevent Them A Practical Guide to Safer, Better-Maintained Extraction Systems What This Guide Covers Restricted airflow and extraction performance Filter and component neglect Access, inspection and maintenance gaps Preventive cleaning and documentation www.proventcompliance.co.uk Grease and residue build-up 3.Poor Cleaning of Extraction Ducts and Canopies Over time, grease, oil and food particles build up inside extraction ducts and canopies. This reduces airflow, increases fire risk and can lead to unpleasant odours in the kitchen. Many businesses overlook regular deep cleaning, which is one of the most common causes of extraction system failure. Schedule regular professional cleaning and ensure your ducts, canopies and filters are inspected and cleaned as per TR19 guidelines. 4. Faulty Fire Suppression Systems The fire suppression system is a critical safety component of your extraction setup. If it’s poorly maintained or not serviced on time, it may not activate properly during a fire, putting your staff, property and business at serious risk. How to Prevent It Ensure your fire suppression system is serviced regularly by a certified engineer and check for any signs of damage or leaks. How to Prevent It Extraction fans and motors are essential for moving contaminated air safely away from the kitchen.Grease deposits can also place additional strain on moving parts and reduce extraction performance. Early signs such as unusual noise, vibration, weak airflow, or overheating should not be ignored, as small mechanical issues can develop into expensive breakdowns. How to Prevent It Include fans and motors in every planned maintenance inspection. Check for unusual vibration, belt wear, bearing problems, grease accumulation, and signs of overheating. 6. Inconsistent Maintenance Scheduling Commercial kitchen extraction systems require maintenance at suitable intervals based on kitchen usage, cooking processes, and grease production. Missing scheduled cleaning and inspections can allow contamination to build up unnoticed, making the system harder to clean and increasing operational and fire- safety concerns. How to Prevent It Create a documented maintenance schedule covering extraction cleaning, inspections, filter checks, fan servicing, and remedial work. Keep records of completed services and review the maintenance frequency as kitchen usage changes. 5.Inadequate Fan and Motor Maintenance Conclusion Regular commercial kitchen extraction maintenance is essential for keeping ventilation systems clean, efficient, and safe. Grease build-up, blocked filters, poor airflow, neglected components, and missed inspections can gradually reduce system performance and increase maintenance and fire-safety concerns. A proactive maintenance programme helps identify problems before they become costly failures. Regular professional cleaning, inspections, servicing, accurate maintenance records, and appropriate cleaning intervals can help keep extraction systems operating reliably and support a safer commercial kitchen environment. www. proventcompliance.co.uk 01313221553 info@proventcompliance.co.uk Unit 2, 4C Eastfield Farm Road, Penicuik, EH26 8EZ