Extraction hood
The extraction hood is the visible part above the cooking or frying zone. Filters, edges and surfaces often collect grease quickly.
Grease duct
The grease duct carries air with grease particles from hospitality extraction. This part is less visible but often important for fire safety, maintenance and reporting.
Air duct
An air duct can be part of general ventilation or air handling. Not every air duct is a grease duct, and not every cleaning question has the same method or scope.
Frequently asked questions
Why does this matter for a quote?
Because price, planning and reporting depend on which components are actually in scope.
Can one job combine several components?
Yes. Hood, grease duct, motor/fan and ventilation context can be assessed together when relevant.