Hood Repair 5 min
How to Maintain Your Kitchen Hood and Keep Suction Strong
How to clean filters, protect the motor, and prevent grease buildup and weak suction.
By FixStove Team • Updated: 2026-05-14
A weak hood leaves odors and grease on cabinets and walls. The problem often begins with clogged filters.
Start with the filters
Metal filters need regular cleaning with warm water and grease remover. Carbon filters usually are not washed and need replacement based on usage.
Signs of motor weakness
If the hood is loud, suction stays weak after cleaning, or the hood runs then stops, the motor or fan may need inspection.
- Grinding or vibration
- Weak suction after filter cleaning
- Light works but motor does not
Preventive maintenance
Monthly filter cleaning and yearly motor inspection reduce faults and keep kitchen odor under control.
Quick checklist
- Clean filters
- Check duct outlet
- Monitor motor noise
- Do not run without filter
FAQ
Does weak suction mean I need a new hood?
No. The cause is often filter blockage, motor weakness, or duct obstruction.
How often should carbon filters be replaced?
Usually every 3 to 6 months depending on cooking volume and hood type.