If your kitchen sees daily stir frying, deep frying or high heat wok cooking, knowing how to clean vent hood filter panels properly is one of the most useful cleaning skills in the home. A clogged filter makes the hood noisier and less effective, lets cooking smells linger, and leaves a layer of grease sitting right above an open flame. This guide covers the three common filter types, a soak method that works, how often to do it, and how to deal with the rest of the hood safely.

In many Singapore homes the hood works hard. Sambal, fried rice, curries and anything cooked in a hot wok all throw fine droplets of oil into the air, and most of it ends up in the filter. In a humid climate that grease turns sticky quickly and then catches dust.

There is also a safety reason to stay on top of it. The Singapore Civil Defence Force’s Civil Defence Emergency Handbook advises households to keep stove tops, cooker hoods and ovens clean and free of grease as part of basic kitchen fire safety.

Know which filter your hood uses

Before you clean anything, take a filter out and look at it, or check the hood’s manual. The method depends on the material.

Baffle filters

Baffle filters are made of overlapping angled metal channels, usually stainless steel. Air is forced to change direction, and grease drops out onto the metal. They are sturdy, handle heavy cooking well and tolerate a good soak and scrub.

Mesh filters

Mesh filters are layers of fine metal mesh, very often aluminium, held in a frame. They trap grease in the layers, which means they clog faster and are harder to clean once grease has hardened deep inside. Aluminium is also softer and reacts with strong alkaline cleaners, so it needs gentler treatment.

Charcoal or carbon filters

Charcoal filters appear on recirculating hoods, which clean the air and blow it back into the kitchen instead of venting it outside. They absorb odours rather than catch grease, and they usually sit behind a metal grease filter. Most charcoal filters cannot be washed and are replaced instead, so check the manual for the replacement interval for your model.

How often to clean hood filters in a busy kitchen

Manufacturers usually give a cleaning interval in the manual, and that is your starting point. In practice, how often you cook and what you cook matters more than the calendar. A household that fries most days will need to clean filters far more often than one that mainly steams and boils.

Rather than relying on a fixed schedule, watch for these signs:

the filter feels sticky or tacky when you touch the underside;
you can see a brown film or oil beading on the metal;
grease drips from the hood onto the hob;
the fan sounds louder or strains, and smoke and smells hang around after cooking;
light no longer passes through a mesh filter when you hold it up.

A sensible habit is to check the filters once a fortnight if you fry often, and to clean them as soon as any of these signs appear. Little and often is far easier than tackling a filter that has gone months without attention, where grease has hardened and needs repeated soaks.

How to clean vent hood filter panels with the soak method

This method works for metal baffle and mesh filters. Allow about an hour, most of it soaking time.

Switch off the hood at the wall. Turn off the hood and its power switch, make sure every hob burner is off, and let the hood and filters cool completely if you have just been cooking.
Remove the filters carefully. Most release with a catch or tab. Wear gloves, because filter edges can be sharp, and support the filter so it does not drop onto the hob.
Prepare a basin. Use your kitchen sink with the plug in, or a large heat safe tub. Fill it with the hottest water from the tap. If you add water from a kettle, pour slowly and keep children away, because scalds are a real risk.
Add a cleaning agent. For stainless steel baffle filters, add a generous squeeze of dishwashing liquid and a few spoonfuls of baking soda. For aluminium mesh filters, use dishwashing liquid only, because baking soda and strong degreasers in very hot water can darken aluminium.
Soak. Submerge the filters fully and leave them for 15 to 30 minutes. Turn them over halfway if they do not fit flat.
Scrub gently. Use a soft nylon brush, working along the channels or the mesh. Avoid steel wool and abrasive pads, which scratch stainless steel and tear mesh.
Rinse and check. Rinse in hot running water and hold the filter up to the light. If grease is still visible, refresh the water and soak again rather than scrubbing harder.
Dry fully. Shake off the water and leave the filters on a rack until completely dry before refitting. Clean the sink straight after, because the grease will have settled on it.

Some manufacturers say their filters are dishwasher safe. If yours does, place the filters upright on the bottom rack and run them on their own, so grease does not redeposit on dishes. Aluminium may still discolour in a dishwasher, which is cosmetic but permanent, so follow the manual rather than assuming.

For heavy, hardened grease

If two soaks have not shifted it, a kitchen degreaser labelled as safe for the filter’s metal can help. Read the label, wear gloves, open the kitchen window and keep the area ventilated. Never mix a degreaser with bleach, ammonia or acidic cleaners, which can give off harmful gases, and rinse thoroughly between products. Oven cleaners and caustic products are generally unsuitable for aluminium filters, as they can corrode the metal.

How to clean cooker hood surfaces, inside and out

With the filters out, it is the right time to do the rest. Here is how to clean cooker hood surfaces without damaging the electrics.

Keep the power off. The hood should still be switched off at the wall while you work around lights and switches.
Degrease the underside. Wipe the inside of the canopy with a cloth dipped in hot, soapy water and well wrung. Spray onto the cloth, not into the hood, so liquid does not reach the motor, fan or wiring.
Clean the light covers and controls with a barely damp cloth. Do not let water run into switches or touch panels.
Wipe the outside. For stainless steel, use warm soapy water and wipe along the grain, then dry with a microfibre cloth to avoid streaks. For glass panels, a mild glass cleaner on a cloth is enough.
Dry everything before refitting the filters and switching the power back on.

Use a stable step stool rather than a chair, and do not lean across a hot hob. Leave the motor, fan blades and ducting to a qualified technician if they need attention, because they involve dismantling electrical parts.

Habits that keep grease under control

A few small habits make each clean quicker and keep the kitchen safer.

Turn the hood on before you start cooking and leave it running for a few minutes afterwards to clear lingering fumes.
Use lids and splatter guards when frying where you can.
Wipe the hood exterior and the hob while they are still slightly warm after heavy cooking, which takes seconds before grease sets.
Mop the kitchen floor rather than washing it down. HDB’s guidance on preventing ceiling leaks advises using non-corrosive detergents and avoiding washing your kitchen.
Never leave cooking unattended. If oil in a wok or pan catches fire, SCDF advises covering it with a wet cloth and turning off the gas supply. Do not pour water on it, as the fire will spread. Call 995 if a fire is not quickly put out.

If your helper does most of the cooking, add filter checks to her weekly routine and show her the soak method once. Our guide to cooking expectations for your helper covers how to agree kitchen routines. For the rest of the kitchen, see our guides on how to clean an oven and how to clean a microwave.

When to hand it over

Some hoods are simply past the point of a quick soak, especially after a long gap between cleans or in a newly bought resale home. Heavy, layered grease across the canopy, cabinets and wall tiles takes hours to do properly.

Femme5 offers kitchen degreasing, including the hood, as a $90 add-on to a cleaning booking, and oven cleaning as a $40 add-on. You can also book a part-time helper for regular kitchen cleaning. We clean the hood and filters; we do not repair motors, fans or ducting.

Frequently Asked Questions

Can I put my cooker hood filter in the dishwasher?

Only if the manufacturer says it is dishwasher safe. Stainless steel baffle filters often are. Aluminium mesh filters can discolour permanently in a dishwasher even when they come out clean. If you do use the dishwasher, run the filters on their own on the bottom rack so the grease does not settle on your dishes, and dry them fully before refitting.

Can charcoal hood filters be washed?

Most cannot. Charcoal or carbon filters absorb odours in recirculating hoods, and washing them usually destroys that ability. They are replaced at intervals given in the hood manual. A few models use washable or reusable carbon filters, so check the manual for your specific hood before doing anything other than replacing them.

What is the best way to remove thick, sticky grease from a filter?

Soak the filter in the hottest tap water with dishwashing liquid, plus baking soda for stainless steel, for 15 to 30 minutes, then brush gently and repeat the soak if needed. For very hardened grease, use a degreaser labelled safe for the filter’s metal, with gloves and good ventilation. Never mix it with bleach, ammonia or acidic products.

Why does my hood still smell after cleaning the filters?

If the metal filters are clean but smells linger, the cause is often a saturated charcoal filter on a recirculating hood, which needs replacing. Grease on the inside of the canopy can also hold odours. If neither applies and the fan seems weak, the motor or ducting may need checking by a qualified technician.

Is a greasy cooker hood a fire risk?

Yes. Grease is flammable, and SCDF’s emergency handbook advises keeping stove tops, cooker hoods and ovens clean and free of grease to reduce kitchen fire risk. Keeping filters clean, never leaving cooking unattended and keeping flammable items away from the stove are simple steps that make a real difference.

Conclusion

Cleaning hood filters is not difficult once you know the material. Switch off the power, soak baffle filters with detergent and baking soda, treat aluminium mesh more gently, replace rather than wash charcoal filters, and dry everything before refitting. Wipe the canopy with a damp cloth rather than spraying into the hood, and keep water away from the electrics.

Done every few weeks in a busy kitchen, it takes less than an hour and keeps the hood quieter, more effective and safer above an open flame.

If years of cooking have left your hood, cabinets and wall tiles coated in grease, a professional degrease is the quickest reset. Prefer to hand it over? Our regular home cleaning covers routine upkeep, and a deep clean goes further. Ask us for a quote.

The Femme5 Team
Home cleaning team, Femme5 Agency
Femme5 provides part-time home cleaning, deep cleaning and post-renovation cleaning for HDB flats, condominiums and landed homes across Singapore.

Femme5 Cleaning Team

Written by the home cleaning team at Femme5 Agency Pte Ltd, which provides part-time home cleaning, deep cleaning and post-renovation cleaning across Singapore.

How to Clean a Kitchen Hood Filter in a Busy Singapore Kitchen