Professional cleaning and maintenance of commercial supply air ductwork, intake grilles and air handling systems across Cornwall.
Supply air systems deliver fresh, filtered air into commercial kitchens, food production areas and hospitality environments. Over time, dust, debris and contamination can build up within ductwork, intake grilles and air handling units, reducing air quality and system efficiency.
Professional supply air cleaning ensures clean airflow, improved hygiene standards and balanced ventilation performance.


We clean and inspect the full supply side ventilation system, not just visible grilles.
• Supply air ductwork
• Intake grilles and louvres
• Air handling unit internal sections
• Pre and secondary filters
• Diffusers and ceiling vents
• Access panels where required
Where necessary, we remove dust deposits, clean internal surfaces and replace or upgrade filters to maintain airflow quality and compliance.
Blocked or contaminated supply air systems reduce indoor air quality, affect temperature control and increase strain on ventilation equipment.
In commercial kitchens and food preparation environments, poor supply air hygiene can compromise working conditions and regulatory standards.
Regular maintenance supports balanced airflow between extraction and intake systems, helping your entire ventilation setup operate efficiently and safely.
Based in Probus, we provide commercial supply air cleaning services across Truro, Newquay, St Austell, Falmouth, Penzance and throughout Cornwall. Our service can be combined with kitchen extraction cleaning, filter replacement and laundry duct cleaning for complete ventilation system maintenance.

Supply air cleaning involves inspecting and cleaning the intake side of a ventilation system, including ductwork, air handling units and filters. These systems deliver fresh air into commercial kitchens and workspaces. Over time, dust and debris can accumulate, affecting airflow and hygiene standards.
Cleaning frequency depends on system usage, environment and filter condition. Commercial kitchens, hospitality venues and food production areas should have supply systems inspected regularly to ensure airflow remains balanced with extraction systems and indoor air quality is maintained.
Yes. Removing dust and debris from supply ductwork and filters helps maintain cleaner airflow throughout the building. This supports a healthier working environment and ensures ventilation systems operate efficiently.
Yes. We can inspect, measure and replace supply air filters as part of routine maintenance. Proper filter condition is essential for protecting internal ductwork and maintaining system performance.
Ideally, yes. Extraction and supply systems work together to maintain balanced airflow. Cleaning both systems as part of a planned maintenance programme ensures optimal performance, hygiene and compliance.
SMS Duct Cleaning
41 CARNE VIEW ROAD, PROBUS, CORNWALL. TR2 4HZ