why is my Bosch rangehood drawing less air with greasy filters?
on a Bosch rangehood with removable washable grease filters, heavy grease is a reason to clean the filters before judging reduced airflow. carbon-filter care is separate on recirculating models.
model scope: for Bosch rangehoods with removable washable grease filters.
switch off, isolate power safely and let the hood cool before releasing user-removable filters using the model's catches. follow its washing, rinsing and thorough drying instructions rather than opening the motor housing.
the linked guide covers washable metal grease filters and checking the separate carbon-filter instructions. do not apply the metal-filter wash to a carbon cartridge or assume a universal carbon replacement interval. if airflow remains weak after correct care, the fan stalls or an electrical fault appears, obtain service. filter maintenance is an initial check, not confirmation that the motor or ducting is sound.
first checks
- confirm the filter type
use the exact hood manual to identify removable washable metal filters and whether a separate carbon filter is fitted.
possible causes
- grease collected in the washable filter
- carbon filter due for replacement on a recirculating model
solutions
diy warning
working on appliances can involve mains electricity, water and moving parts. always disconnect power and water before you start. in Australia, gas work must be done by a licensed gasfitter, and fixed (hard-wired) electrical work by a licensed electrician. everything on this site is guidance only, and any repair you carry out is at your own risk. we are not responsible for any damage or injury caused by attempting a repair. if you are not confident, please use a qualified technician.
