How to Clean Your Kitchen Extractor Hood with Vinegar and Bicarbonate

Often overlooked in everyday cleaning, the kitchen extractor hood works continuously in the background. Yet it is usually one of the last appliances to be maintained. Once it becomes clogged, the room can feel stuffy, cooking is less enjoyable and the fan begins to sound laboured rather than quiet.

Why your extractor hood matters more than you think

Many people only pay attention to the hood when it starts making a racket or grease begins to drip from it. At that point, however, it may already have lost a significant amount of its effectiveness. A grimy hood finds it harder to draw in steam, allows odours to travel into other rooms and makes its motor work harder.

Uneven suction, louder noise and lingering odours are often just symptoms of filters packed with old grease.

This creates several knock-on effects. Fine particles produced by frying and grilling remain in the kitchen, reducing indoor air quality. Greasy deposits build up more quickly on cupboards and ceilings. Electricity consumption can also rise as the fan has to work harder to shift the same amount of air.

Hygiene is another consideration. When old cooking fat is reheated, it gives off odours and may subtly affect the flavour of food being prepared nearby. The hood is intended to remove this combination of fumes and vapours. If it cannot do so, the distinction between a “freshly cooked” kitchen and a stale-smelling one soon becomes blurred.

The quiet “pro” trick: vinegar steam plus a bicarbonate bath

Professional cleaners do not usually spend hours scrubbing. They loosen the dirt first, then lift it away with very little effort. That approach works just as well for kitchen hoods, using ordinary household items that many people already own.

A short burst of vinegar steam loosens the grease, and a very hot bicarbonate soak does the heavy lifting on the filters.

This two-stage approach often catches people out because it is so simple. It avoids aggressive degreasers and overpowering chemical fumes, while restoring metal surfaces and helping the fan draw air more freely.

What to prepare before you start

If possible, isolate the hood at the mains, and allow the hob to cool if you have recently been cooking. Cover the hob with a clean towel to catch any drips. Put on washing-up gloves and gather two microfibre cloths, a non-scratch sponge, plus a small tool for tight spots, such as a soft brush or cotton buds.

You will need only two simple solutions:

• A bowl of warm water with a small squeeze of washing-up liquid.
• A saucepan of water with a glass of white vinegar.

The latter solution creates steam that loosens the greasy coating on the hood casing and around its filters.

Step 1: vinegar steam that breaks the greasy film

Heat the vinegar water until it reaches a gentle simmer, then set the saucepan on the hob directly beneath the hood. Keep the hood switched off at this point. Allow the steam to rise onto the metal surfaces for around 8–10 minutes. The mildly acidic vapour softens the sticky layer that routine wiping rarely removes.

Switch off the hob and give the steam a moment to settle. While the hood is still warm and slightly damp, clean its outer casing using a microfibre cloth dipped in the soapy water and thoroughly wrung out. On a stainless-steel hood, wipe in the direction of the grain to prevent streaking.

Use a second cloth and clean water to rinse the surface, then dry it immediately. Even this brief process can noticeably improve the appliance: it looks less dull, shows fewer marks and feels smoother to the touch.

Step 2: a bicarbonate bath for filters clogged with grease

The filters are where most of the cleaning is needed. These metal sections catch fat carried in cooking vapour and can eventually become sealed up like a blocked lung. Remove them carefully, following the instructions for your particular model.

Fill a sink or large bowl with very hot water, nearly at boiling point. Add two heaped tablespoons of bicarbonate of soda for every litre of water, then stir briefly. Fully immerse the filters and leave them for 10–15 minutes. As the solution works beneath the greasy coating, small bubbles will begin to appear.

When the solution is hot enough and the soak is long enough, the grease slips away with almost no pressure on the sponge.

Once they have soaked, wipe both sides of each filter with a soft sponge. Add one drop of washing-up liquid for particularly stubborn corners. Rinse under running water until the water runs clear, shake away excess water and stand the filters upright to dry naturally. Drying them vertically helps prevent water marks and allows trapped moisture to drain away.

Many modern metal filters are dishwasher-safe. If the manual permits this, position them vertically on a hot cycle and leave plenty of room around them. In very hard-water areas, avoid doing this every week because limescale may gradually dull their finish.

Step 3: inside surfaces and sensitive parts

If the hood has an opening section, internal panels and corners where grease collects will be visible. Wipe any accessible areas using a cloth lightly dampened with the same soapy water prepared earlier. Stay away from the motor and electrical components: this is a wipe-down, not a soaking.

Cotton buds are useful for screws and narrow joins. Use only a small amount of liquid so that it does not drip. Follow with an almost dry cloth to remove any soap, then dry the area promptly. This helps slow the return of greasy residue and stops odours lingering in concealed corners.

Step 4: bringing stainless steel back to a clean shine

To give stainless steel a tidy finish, use a microfibre cloth to apply a 50/50 mixture of water and white vinegar, then polish with a dry cloth. This leaves the surface clearer, with fewer streaks and fingerprints.

Do not use abrasive scourers, steel wool or bleach. These products can scratch and cloud the finish, and may cause permanent damage to modern hoods, especially brushed surfaces where every mark is visible.

Simple moves that keep kitchen smells under control

A newly cleaned hood will already deal with fumes more effectively, but certain cooking sessions challenge every system, especially fish, long braises and deep frying. A few easy routines can help freshen the room more quickly.

• Keep the hood running for 10–15 minutes once cooking has finished, allowing it to clear remaining vapours.
• Leave a small bowl of bicarbonate on the worktop overnight to absorb persistent odours.
• Simmer citrus peel in a pan of water for ten minutes to neutralise heavy kitchen air.

For a light fragrance, add one or two drops of essential oil to a cotton pad and place it near the bin or in a discreet corner. Do not put oils on or near the hood and filters, as they can create additional residue and reverse some of your cleaning efforts.

How often should you clean the hood?

The best schedule depends on what and how often you cook, although frequent light cleaning is more effective than an occasional intensive scrub. Many repair technicians say they can tell a household’s cleaning habits simply by listening to the hood when it is switched on.

Cooking style	Surface wipe	Metal filter clean	Charcoal filter change
Occasional cooking, little frying	Every 2 weeks	Every 2–3 months	Every 6 months
Daily cooking, regular frying	After heavy sessions	Once a month	Every 3–4 months
Intensive use (large families, meal prep)	Several times a week	Every 3–4 weeks	Every 2–3 months

For recirculation hoods fitted with charcoal filters, manufacturers generally recommend replacement every three to six months, according to usage. These filters do not respond well to rinsing; washing them usually reduces their ability to capture odours.

One safety rule is essential: never combine white vinegar with bleach or powerful chlorine-based cleaners. Together, they produce gases that should not be breathed in within an enclosed kitchen. Before applying a new product to the hood, test it first on a small concealed section behind a panel or underneath the appliance.

What this means for your kitchen, your bills and your safety

A clean extractor hood offers more than a smart appearance for social media. It improves airflow, reduces the greasy layer that attracts dust and may marginally cut electricity use because the fan is not forcing air through clogged filters. In homes where people cook several times daily, this can become noticeable over the months.

There is a safety benefit too. Less grease in and around the hood means less fire risk above the hob. In a busy home where pans can overheat, a sticky and neglected filter provides material that flames can feed on. Regular bicarbonate baths remove that potential fuel and make the arrangement safer.

The effect can be psychological as well. A hood that runs with a soft hum, has a neutral smell and looks clean changes the atmosphere of a kitchen. People are often more inclined to prepare varied meals when frying or grilling smells disappear quickly. This may encourage a move away from takeaways and back towards home cooking, with clear advantages for health and household budgets.

For those designing a new kitchen, these cleaning techniques suggest another consideration: which hood should be chosen in the first place? Hoods with removable metal filters, smooth internal surfaces and accessible panels make the vinegar-and-bicarbonate routine easier. When comparing appliances in a showroom, ask how the filters are removed and how often they need replacing, rather than focusing only on the number of speed settings.