If you're renovating a kitchen or designing a new build in the UK, you may be wondering: is an extractor fan legally required in a kitchen? The short answer is: not always, but adequate ventilation is.
In this blog, we’ll break down UK regulations, explain when you need an extractor fan, and outline your options to stay compliant with Building Regulations.
What the UK Building Regulations Say
Under Approved Document F of the Building Regulations (Ventilation), every kitchen must have an effective means of ventilation, but this doesn’t always mean an extractor fan is legally required.
According to Building Regulations:
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You must provide a mechanical ventilation system in:
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New builds
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Kitchen extensions
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Major refurbishments involving ventilation updates
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This typically means:
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An extractor fan that extracts at least 30 litres/second (if installed above the hob)
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Or 60 litres/second if installed elsewhere in the kitchen
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In existing homes or smaller renovations, natural ventilation (e.g. a window) might be sufficient — if it’s already compliant and there are no major changes.
Do I Need an Extractor Fan in My Kitchen?
New Kitchens or Extensions:
Yes — you will need a mechanical extractor that complies with Building Regulations Part F.
Whether you choose a cooker hood with ducting to outside, or a recirculating hood with filters, the extractor must be rated correctly and installed properly.
Existing Kitchens (No Structural Work):
Not necessarily — if there's already adequate ventilation (like a large window), you're usually compliant.
However, adding an extractor fan is still strongly recommended to reduce:
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Grease build-up
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Moisture
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Mould
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Lingering cooking odours
Types of Kitchen Extractor Fans That Meet Regulations
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Ducted Extractor Hoods
These remove air and steam directly outdoors and offer the best performance in terms of air quality.
Popular ducted options include:
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Ceiling Cooker Hoods – Great for open-plan kitchens or modern aesthetics.
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Island Cooker Hoods – Perfect for cookers on a kitchen island.
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Wall Mounted Cooker Hoods – A classic and effective solution for cookers placed against a wall.
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Built-In Hoods – Ideal for a minimalist, integrated look.
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Recirculating Hoods with Filters
These clean the air with carbon and grease filters and recirculate it back into the room. They don’t meet Building Regs for new builds, but are acceptable for upgrades where ducting isn’t possible.
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Ceiling Extractors & Downdraft Extractors
Stylish and effective options when installed correctly and rated for extraction.
Consider modern solutions like:
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The Slim Downdraft Range – Discreet, sleek, and efficient.
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The Centrale Downdraft Range – Innovative design with powerful performance.
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The On-Board Downdraft Range – Seamlessly integrated into the hob area for ultimate convenience.
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Key Takeaways
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Extractor fans are required in new kitchens, extensions, or refurbishments involving ventilation.
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Existing homes may rely on natural ventilation, but adding extraction is advised for hygiene and air quality.
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The system must be capable of extracting 30–60 litres/second, depending on placement.
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Always use a qualified installer and consult your local Building Control if unsure.
Looking for a Compliant Extractor Fan?
At Devine Distribution, we stock a wide range of ducted and recirculating cooker hoods from premium brands like Airforce and Haier, designed to suit all kitchen styles and layouts. Whether you need a sleek island hood or a compact built-in extractor, we’ll help you meet regulations without compromising design.