Filters are the start, not the job. Mesh filters saturate with grease and choke the airflow – washing them helps for a week. The grease you cannot see is the problem: coating the fan blades, lining the housing, and narrowing the duct that carries everything outside. Extraction dies in the parts a tea towel never reaches.
A FreshDuct rangehood service strips the unit: filters degreased or replaced, fan blades and housing cleaned back to metal, the duct run cleared, and the outside discharge checked. The airflow difference is immediate – and you see it in the before and after photos, like every job we do.
Grease is also the fire fuel in a kitchen exhaust. A hood packed with grease sits directly above the most common source of flame in your house. Keeping the extraction path clean is not just about smells – it removes the fuel load where ignition is most likely.