Ducted vs Recirculating Extraction: What’s the Difference?

A kitchen extractor has an important job: managing cooking fumes, moisture and airborne grease while you cook. But not every extractor handles that air in the same way.

Two common approaches are ducted extraction, which directs air outside, and recirculating extraction, which filters air before returning it to the kitchen. Understanding the difference can help you plan an extraction system around your kitchen layout and installation requirements.

The right choice depends on more than the appearance of the cooker hood. Here is what to consider before deciding.

How Does Ducted Extraction Work?

A ducted extractor draws air from above the cooking area and channels it through ducting to an external outlet. Cooking odours, moisture and airborne particles are carried out of the home rather than returned to the room.

This makes the route to the outside an important part of the kitchen plan. The position of the hob, distance to an external wall or roof outlet and available space for ducting can all affect what is practical.

Ducting should be planned according to the selected extractor’s specifications. Its diameter, route and bends can influence performance, so a suitable installation matters just as much as the hood itself.

A long or complicated duct route can restrict airflow, particularly when it includes multiple sharp turns. This does not mean every kitchen needs the shortest possible route, but the layout should be checked before cabinetry and ceiling finishes are completed. The extractor manufacturer’s guidance should determine acceptable duct sizes and arrangements, rather than assuming that any available pipe will do.

An external outlet also needs to be positioned appropriately. Its location should account for the building layout and relevant installation requirements. A professional can assess the proposed route, including any wall or roof penetrations, before work begins.

How Does Recirculating Extraction Work?

A recirculating extractor draws cooking air through filters and releases it back into the kitchen. Grease filters help capture airborne grease, while a suitable carbon filter is commonly used to reduce cooking odours.

Because the air is returned indoors, recirculating extraction does not remove moisture from the kitchen in the same way as an externally ducted system. General kitchen ventilation remains important.

Recirculation may be an option where routing ducting outdoors is difficult or where the kitchen layout limits the available installation paths. However, not every cooker hood supports recirculation, and the correct filters and setup depend on the model.

Carbon filters are not interchangeable across every extractor. Some are designed to be replaced after a period of use, while others may have different care requirements. Using the correct filter is essential to the intended recirculating setup. It is worth checking availability and replacement requirements when comparing models, rather than treating filters as an afterthought.

What Are the Main Differences?

The clearest distinction is where the air goes. Ducted extraction moves cooking air outside, while recirculating extraction filters it and returns it to the room.

That difference affects several practical decisions. Ducted systems need an appropriate external outlet and duct route. Recirculating systems require compatible filtration and ongoing filter care, including replacement of carbon filters where specified.

Neither approach should be selected on appearance alone. A hood that suits the kitchen design still needs to suit the cooking area, the available installation space and the manufacturer’s requirements.

There is also a difference in what each system can achieve with steam. A ducted hood can carry moisture-laden air outside, provided it is correctly specified and installed. A recirculating hood can help with grease and odours through filtration, but steam remains in the room. That makes windows and other appropriate ventilation particularly relevant when cooking creates a lot of moisture.

Consider the Kitchen Layout First

The position of your hob or stove is a useful starting point. A cooking area against an external wall may offer a more straightforward ducting route than an island in the centre of an open-plan kitchen. Ceiling spaces, cabinetry and existing building features also affect the options.

If you are renovating or designing a new kitchen, consider extraction before finalising cabinetry and services. Early planning allows space for the chosen hood and, where needed, its ducting route.

For an existing kitchen, a retailer or qualified installer can help assess which installation methods are feasible for the selected extractor.

Island cooking areas deserve particular attention because the extractor may sit above an open space rather than against a wall. Depending on the design, ducting may need to pass through a ceiling or other building element. An integrated or slimline hood has different space constraints, especially where cupboards need to accommodate both the appliance and any ductwork.

If you are choosing an extractor during a renovation, ask the kitchen designer and installer to confirm the intended extraction method together. A change from ducted to recirculating use, or the reverse, may affect which accessories are needed and how the kitchen is built around the hood.

Think About Everyday Cooking and Maintenance

Consider how often you cook and the types of meals you prepare. Frequent frying and high-heat cooking can produce more grease, steam and odours, making suitable extraction particularly important.

All extractor systems need routine care. Grease filters should be cleaned according to the product instructions. Recirculating setups may also need carbon filters replaced at the intervals specified by the manufacturer.

Check the requirements of the exact model before choosing. Extraction capacity, noise, filter compatibility and permitted installation configurations vary across products.

Noise is another useful comparison point, but it should be assessed using the information for the actual model and operating setting. A quoted airflow figure alone cannot tell you how an extractor will sound in your kitchen. Think about the hood’s placement, your typical cooking routine and the manufacturer's published specifications before making a decision.

Whatever the extraction method, the hood needs to be used effectively. Switching it on when cooking begins and keeping grease filters clean are practical habits that support its intended operation. Always follow the specific model’s operating and cleaning instructions, including any guidance on how long to run the fan after cooking.

A Practical Extraction Planning Checklist

Before selecting a cooker hood, ask:

• Where is the hob or stove positioned?

• Is there a practical route for ducting air outside?

• Does the selected extractor support ducted use, recirculation or both?

• What ducting or filters does the manufacturer specify?

• How will the extractor fit around cabinetry, ceilings and other services?

• What cleaning and filter-replacement requirements will apply?

• Who will confirm the suitability of the planned installation?

These questions help narrow the options before you compare finishes and designs.

Explore Kitchen Extraction with Eurafrican

Eurafrican distributes kitchen extraction products from EUROair and Pierre Roblin, including slimline, wall-mounted, island and integrated cooker hoods. The available configurations and requirements depend on the specific model.

Explore our extractor range and find an independent Eurafrican retailer to discuss product availability and the extraction options suited to your kitchen. Installation requirements should be confirmed with an appropriately qualified professional.