Quick answer: Clean the grease filter first, then check the range-hood manual to see whether the fan blade or blower wheel is owner-accessible. Switch the hood off and isolate power at the plug or breaker before reaching inside. If the manual allows surface cleaning, use a soft cloth dampened with warm mild-detergent solution and keep liquid away from the motor, wiring, light sockets, and controls. Do not remove a blower assembly without instructions. Stop for a loose wheel, damaged wiring, unusual noise, or grease inside sealed electrical areas.
Why the hood can still feel greasy
A metal mesh or baffle filter captures much of the airborne grease, but fine film can settle on the housing and accessible fan surfaces. Heavy frying makes buildup faster. A charcoal recirculation filter works differently and is commonly replaced rather than washed.
If the hood smells greasy immediately after the metal filter is cleaned, inspect with a flashlight. Distinguish a surface film you can reach from grease deep in a motor compartment or duct. The second situation is not a cloth-cleaning job.
Notice the shape of the grease pattern. A thin even film fits routine capture; liquid drips, a saturated electrical cover, or grease pooling in a seam deserves a closer manual check. Excess buildup may reflect an overdue filter, unusually heavy cooking, or a ventilation problem that surface wiping alone cannot diagnose.
Confirm the fan design and power isolation
Look up the exact hood model. It may use a flat fan blade, a squirrel-cage blower wheel, twin blowers, or a remote motor. The manual should show which filter releases and whether the wheel is intended to come out for owner care.
Turn off the cooktop, let every surface cool, switch the hood off, and disconnect power. A control set to “off” is not the same as electrical isolation. Protect the cooktop with a thick towel and never stand on it.
Clean the filter before working overhead
Remove the metal filter by its documented latch while supporting its weight. Broan-NuTone recommends soaking metal grease filters in warm water with mild detergent; dishwasher use depends on the manual, and non-phosphate detergent may help avoid discoloration. Let the filter dry fully.
For a detailed filter decision, use the separate guide to washing metal versus replacing charcoal range-hood filters. Cleaning the fan while a saturated filter goes back in front of it will not solve the maintenance cycle.
Wipe only what the manual exposes
Use a clean cloth dampened—not dripping—with warm water and mild dish detergent. Support a stationary accessible blade with one hand only if the manual permits contact, and wipe along the surface without bending it. Rotate the wheel gently by its sturdy hub rather than pulling on thin fins.
Keep solution away from bearings and the motor. Broan-NuTone states that hood motors are permanently lubricated and do not need oiling. Do not use steel wool, abrasive scrapers, bleach, or combustible solvents such as acetone or alcohol near the range.
Dry, reinstall, and listen
Follow with a cloth lightly dampened in clean water, then dry the housing and accessible fan. Reinstall any guard and the dry filter in the correct orientation. Remove the towel from the cooktop before restoring power.
Run the fan at its lowest setting, then increase speed. A new scrape, wobble, vibration, or grinding sound means stop. The wheel may be unbalanced, loose, or damaged. Cleaning should not change its alignment.
Know when grease is a service problem
Use service when access requires disconnecting wiring, removing the motor, entering ductwork, or working above a gas connection. Also stop for brittle insulation, melted connectors, a loose fan hub, sharp damaged fins, smoke, or an electrical smell. Never energize a wet hood.
Grease that reaches nearby cabinetry can be handled separately with the guide to gentle cabinet-door degreasing. Keep cabinet cleaner away from the hood openings.
Bottom line
Filter cleaning comes first; fan cleaning comes only after the manual confirms safe access. Isolate power, use a modest mild-detergent wipe, protect the motor and wiring, and restore every guard before testing. When the wheel is loose, noisy, or buried behind electrical parts, stop at the filter and call qualified service.
Sources
- Broan-NuTone Range Hood Installation Manual: Cleaning and Maintenance
- Broan-NuTone: Cleaning Range Hood Grease Filters
Editorial image generated for Gohall with OpenAI ImageGen; it illustrates the maintenance context and is not a product test. Reviewed by the Gohall Clean Team on September 8, 2026.