NuTone Ventilation Hoods: How to Keep Yours Running and Fresh

What NuTone makes and where you'll find it

NuTone is a brand owned by Broan-NuTone LLC that manufactures ventilation hoods, range hoods, and exhaust fans for kitchens and bathrooms. You'll recognize their name on the hood mounted above your stove, on under-cabinet models, or on wall-mounted units. NuTone has been making these products since the 1930s, so if your hood is older, it may carry their label even if you didn't install it yourself.

The brand makes several types of ventilation products: ducted hoods that vent outside, recirculating hoods with charcoal filters, island hoods, and combination units that handle both cooking exhaust and kitchen lighting. Most NuTone hoods are designed to work with standard kitchen cabinetry and fit into spaces where older models sat, which is why you might find one already in place when you move into a rental or older home.

Key Takeaways

• NuTone hoods need their grease filters cleaned or replaced every one to three months, depending on how much you cook, or they lose suction and let odors linger in your kitchen.
• Ducted models need the ductwork checked for blockages at least once a year, because lint and grease buildup can reduce airflow even when the filter looks clean.
• The motor and fan blades collect grease over time and should be wiped down during deep cleaning to prevent rust and noise.
• Charcoal filters in recirculating models cannot be cleaned and must be replaced every three to six months to stay effective.
• Your model number and serial number are usually on a label inside the hood or on the underside of the canopy, and you'll need them to order replacement parts.

Finding your model number and getting the manual

Your NuTone hood's model number is printed on a label, usually found inside the hood cavity, under the canopy, or on the back wall behind the unit. Write this number down—you'll need it to order filters, replacement parts, or to find your specific manual online. The serial number is often on the same label and helps if you need warranty information.

NuTone manuals are available through Broan-NuTone's website or through major appliance manual databases. Search for your model number plus "manual" or "user guide" to find the PDF. The manual will tell you the exact filter size, replacement schedule, and any special cleaning steps for your particular model. Keep a photo of the label in your phone so you have the model number when you're shopping for filters.

Cleaning and replacing grease filters

Grease filters are the metal mesh or baffle panels that sit in front of the fan. They trap cooking grease and smoke before air reaches the motor. Most NuTone hoods use either flat mesh filters or curved baffle filters, and both need regular cleaning to work properly. A clogged filter forces the motor to work harder, reduces airflow, and lets cooking odors escape into your kitchen instead of being vented out.

Remove the filter by sliding it out or unlatching it—your manual will show the exact method. Soak it in hot water with degreaser (dish soap works for light buildup, but a commercial kitchen degreaser is more effective for heavy grease) for 15 to 20 minutes, then scrub gently with a soft brush and rinse thoroughly. Do not use a dishwasher unless your manual says the filter is dishwasher-safe, because high heat can warp the frame. Dry the filter completely before reinstalling it to prevent rust.

If the filter is bent, torn, or no longer cleans well even after soaking, replace it. NuTone filters are sold under the brand name and also under the Broan label (the parent company). Order by your model number to ensure the right fit. Most filters cost between $15 and $40 depending on the type. Keep a spare on hand so you can swap it in while the other soaks.

Checking ducts and airflow in ducted models

Ducted NuTone hoods vent cooking exhaust directly outside through ductwork. Over time, lint, grease, and dust accumulate inside the duct, reducing airflow even if your filter is clean. If your hood sounds loud but doesn't seem to pull air as well as it used to, the duct is likely blocked.

Start by checking the damper—the flap on the outside vent that opens when the hood runs and closes when it's off. If it's stuck or clogged with lint, air can't escape. Clean around the damper opening and work it back and forth by hand to make sure it moves freely. Next, look inside the duct opening (from inside your kitchen) with a flashlight. If you see a thick layer of grease or lint, the duct needs cleaning.

For light buildup, you can clean the first few feet of ductwork yourself using a flexible duct brush (available at hardware stores for $10 to $30) or a plumbing snake wrapped in a cloth. Push it through gently to loosen debris, then vacuum it out. For heavy buildup or ducts you can't reach, hire a professional duct cleaning service—they have equipment to clean the entire run without damaging it. A professional cleaning typically costs $150 to $300 but restores full airflow and reduces fire risk from grease accumulation.

Cleaning the motor, fan blades, and housing

The fan blades and motor housing collect grease and dust over months of use. This buildup reduces efficiency, can cause noise or vibration, and creates a fire hazard. Clean these parts during your deep cleaning routine, which should happen at least twice a year if you cook frequently.

Turn off the hood and unplug it or switch off the circuit breaker. Remove the filter first so you have access to the blades. Use a soft cloth or soft-bristled brush dampened with a degreaser to wipe down the fan blades, the housing, and any visible motor parts. Work gently to avoid bending the blades or damaging electrical connections. For stubborn grease, let the degreaser sit for a few minutes before wiping. Dry everything thoroughly with a clean cloth before plugging the hood back in.

If the blades are bent or the motor makes grinding or squealing sounds even after cleaning, the motor may need repair or replacement. Contact NuTone customer service with your model number to discuss options—motor replacement typically costs $200 to $400 plus labor if you hire an electrician.

Charcoal filters in recirculating models

Recirculating hoods don't vent outside; instead, they pull air through a charcoal filter that traps odors and grease, then return the air to your kitchen. These hoods are useful in apartments or kitchens where ductwork to the outside isn't possible, but the charcoal filter is the critical part—once it's saturated, it can't be cleaned or restored.

NuTone charcoal filters need replacement every three to six months, depending on how much you cook. You'll know it's time when cooking odors start lingering in your kitchen even though the hood is running. Unlike grease filters, charcoal filters cannot be washed or reused. Order the correct replacement by model number—NuTone charcoal filters typically cost $20 to $50 each. Some models use a single filter, others use two, so check your manual to know how many to order.

Replace the charcoal filter by removing the grease filter first, then sliding or unlatching the charcoal filter cartridge. Install the new one in the same orientation and reinstall the grease filter. Mark your calendar three months from the installation date so you remember to replace it on schedule.

Troubleshooting common NuTone hood problems

If your NuTone hood isn't pulling air, start with the filter. A clogged grease filter is the most common cause of reduced suction. Remove and clean it, then test the hood. If airflow is still weak, check the ductwork for blockages (in ducted models) or replace the charcoal filter (in recirculating models).

If the hood runs but is very loud, the fan blades may be bent or hitting the housing, or grease buildup on the blades may be causing vibration. Clean the blades and housing thoroughly. If noise continues, the motor bearings may be wearing out and the unit may need professional service.

If the hood won't turn on at all, check that it's plugged in and that the circuit breaker hasn't tripped. Some NuTone models have a delay-off feature that keeps the fan running for a few minutes after you turn it off—this is normal. If the hood still won't respond, the control switch or wiring may need repair by a may have access to electrician.

Frequently Asked Questions

How often should I clean my NuTone hood filter?

Clean or replace your grease filter every one to three months, depending on how often you cook. If you cook daily or use high-heat methods like frying, clean it monthly. Light cooking may allow you to go three months. Charcoal filters in recirculating models must be replaced every three to six months and cannot be cleaned.

Can I use my NuTone hood without a filter?

No. Running the hood without a filter allows grease to coat the motor and fan blades, which reduces efficiency, causes noise, and creates a fire hazard. Always reinstall the filter after cleaning, and replace it if it's damaged.

Where do I buy replacement NuTone filters?

Replacement filters are sold online through Amazon, Home Depot, Lowe's, and directly through Broan-NuTone's website. You can also find them at appliance parts suppliers and some hardware stores. Order by your model number to ensure the correct fit and size.

What's the difference between a ducted and recirculating NuTone hood?

A ducted hood vents cooking exhaust outside through ductwork, removing heat and moisture from your kitchen. A recirculating hood filters the air through charcoal and returns it to your kitchen, so it doesn't remove heat or moisture but works in any kitchen layout. Ducted hoods are more effective but require ductwork to the outside.

My NuTone hood is over 10 years old—should I replace it?

If it still runs and pulls air after cleaning the filter and ductwork, there's no reason to replace it. NuTone hoods are built to last 15 to 20 years with regular maintenance. Replace it only if the motor fails, the housing is damaged, or you want a newer model with different features.