Kitchen Ventilation Fitting Derby

Good kitchen ventilation isn't just the hood on the wall - it's the duct run behind it, the wiring that switches it on, and whether the fan can actually shift steam and cooking smells before they turn into condensation on a cold morning. We fit and wire cooker hoods, extractor fans and ducted extraction systems across Derby and the surrounding towns, working out whether a ducted, recirculating or island system suits your kitchen before anything gets ordered. On a lot of the jobs we're called to, the hood itself isn't the problem - it's a duct run that was never sized for the fan, or a recirculating hood fitted in a kitchen that actually had a perfectly good outside wall two feet away.

Every job includes the electrical work needed to run and certify the extractor safely, and where a hob interlock is involved, that connection is carried out and commissioned by a Gas Safe registered engineer. Whether you're replacing a tired hood as part of a full kitchen refit or fitting extraction on its own, we'll tell you honestly whether your wall or ceiling will take a straightforward duct run or whether recirculating filtration is the more practical option for your layout. If you're planning a wider refit rather than just the extraction, it's worth looking at our approach to full kitchen design and fitting work, since the hood and ducting are usually specified alongside the units rather than as an afterthought.

• Supply and fit of integrated, chimney, canopy and island cooker hoods across the major kitchen brands
• Ducted extraction runs through an external wall, a false ceiling void or up through the roof, sized and routed to suit the kitchen layout
• Recirculating hood conversions with carbon filter fitting where there's no practical route to an outside wall
• Coring and sealing the external wall or soffit vent, including a weatherproof cowl to stop draughts and rain getting back in
• Wiring the extractor fan or hood onto its own switched spur, certified by a Part P registered electrician
• Gas hob interlock wiring and commissioning where a ducted or recirculating hood is linked to a gas hob, carried out by a Gas Safe registered engineer
• Fitting or replacing grease filters and carbon filter cartridges on new and existing hoods
• Boxing in or making good the ceiling or wall around an exposed duct run so it sits flush with the rest of the kitchen rather than being left as bare pipework
• Removal and disposal of the old extractor unit and redundant ducting through our registered waste carrier licence

• Structural alterations beyond the vent core hole - knocking through cavity walls or altering roof trusses is referred to a builder, not carried out by us
• Extending or upgrading the kitchen's electrical circuits beyond the extractor's own spur - that's priced and scheduled as separate electrical work
• Duct runs longer than a few metres or requiring a boosted inline fan - these need a site visit before we can quote, since cost depends on the route
• Ongoing filter upkeep after the first fit - carbon filters typically need replacing every 3-6 months and grease filters cleaning monthly, and that's down to the homeowner
• Repainting or replastering a ceiling void once a duct box has been fitted through it - we make the boxing good and paintable, but decorating beyond that is priced separately
• Commercial kitchen extraction meeting fire, grease and noise regulations for restaurants and cafes - covered separately and priced by the run, as shown in the comparison table below

1. Initial call -- We talk through what you've got - gas or electric hob, whether there's an outside wall nearby, and whether this is a standalone job or part of a wider kitchen fit.
2. Site visit and duct route check -- We look at the actual wall or ceiling the ducting would need to pass through, check what's on the other side, and work out whether a ducted or recirculating hood is realistic before you buy one. This is also where we flag anything unusual - a solid wall thicker than normal, a joist run that blocks the obvious path, or a soil pipe sitting where the cowl would need to go.
3. Written quote -- An itemised quote covering the hood, ducting, wall coring, electrical spur, any gas interlock work and making good around the duct, so there's nothing hidden once the job starts.
4. Coring and first fix -- The wall or soffit is cored, ducting is run and sealed, and the switched electrical spur is installed ready for the hood.
5. Fitting and commissioning -- The hood or fan is fitted, wired and tested for airflow; any gas hob interlock is commissioned by a Gas Safe registered engineer before the hob is signed off as safe to use.
6. Certification, sign-off and clean-up -- You get the electrical safety certificate (and gas certificate where relevant), a walkthrough on filter maintenance, and old units and offcuts are taken away by our registered waste carrier.

A basic recirculating hood starts from around £150 plus fitting, since there's no wall to core or duct to run. A ducted cooker hood or chimney hood through an external wall typically comes in at £300-£600 installed, and that figure moves depending on whether the wall is solid brick or cavity, and how far the ducting has to travel to reach the outside. Designer island and downdraft hoods, which usually need ducting routed under the floor or through the ceiling void to keep the run hidden, start from around £1,000. Commercial extraction with full canopy and ductwork is a different job entirely and starts from £2,000. A gas hob interlock, where the hood is wired to cut the gas supply if the extractor isn't running, adds to the electrical side of the job rather than the hood price itself, since it's the Gas Safe engineer's commissioning time that's being priced, not extra materials. None of these figures include unusual complications - a longer-than-normal duct run, a stone or double-thickness wall, or extra electrical work beyond the extractor's own spur can all add to the price, which is why a full, firm quote needs a site visit rather than a phone estimate.

A cooker hood is only as good as the duct run and the wiring behind it, and we've seen what goes wrong when extraction is treated as an afterthought: a recirculating hood fitted where the customer actually wanted a route outside, condensation building up on cold mornings because the duct run is too long or too narrow for the fan, or a hood wired into an existing kitchen socket circuit that trips every time the oven's running too. None of that shows up until the kitchen's finished and the fan gets switched on for the first time - which is exactly why we check the duct route before the hood is ordered, not after it's on the wall.

That's why every extractor circuit on our jobs is wired and certified by a Part P registered electrician, and any gas hob interlock is signed off by a Gas Safe registered engineer - not for the sake of the paperwork, but because a hood that isn't properly earthed or a gas connection that isn't commissioned correctly is the kind of fault that stays hidden until it's dangerous. Old units and ducting offcuts leave with our registered waste carrier rather than sitting in a skip on your drive, and the same 5-year labour and installation guarantee that covers a full kitchen fit applies to ventilation work fitted on its own, backed by a 2-year guarantee on the hood or fan itself.

We fit ventilation and extraction systems in Derby first, then throughout the towns we already work in for full kitchen installations - Chesterfield, Long Eaton, Belper, Ilkeston, Heanor, Alfreton, Swadlincote, Ripley, Dronfield, Duffield and Wirksworth, plus Nottingham. Derby's older terraces, around areas like Normanton, Pear Tree and Chaddesden, are usually solid nine-inch brick with no cavity, so coring a duct hole needs a longer masonry bit and a bit more time on site than the cavity-wall estates on the edge of town. Newer estates around Oakwood and Mickleover tend to have cavity walls with insulation batts inside them, which changes how the duct sleeve is sealed to stop the cowl becoming a cold spot. Head out toward Matlock, Bakewell or Buxton and the building stock changes again - a lot of the stone cottages there have wall thicknesses well over a foot, which is often the reason a recirculating hood ends up the more practical choice rather than trying to duct straight through solid gritstone. Flats and converted properties nearer Derby city centre often have no external wall in the kitchen at all, which is usually the deciding factor in choosing recirculating filtration over a ducted system regardless of budget.

Once tiling and units are in, changing your mind about a duct route means ripping work back out - it's far easier to sort out whether a ducted or recirculating hood suits your kitchen before anything's ordered. Get in touch for a site visit and a written quote with nothing hidden in it.

Kitchen Fitters Derby, Fitted Kitchens, Derby
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