Hertfordshire · Ductwork cleaning
Ductwork Cleaning in Cottered
We cover Cottered for ductwork cleaning. Fixed quotes, work around your opening hours and photo reports on every job.
- Heavy grease at the base of a riser
- Proof of duct cleaning for the insurer
- High readings at a recent grease test
How the visit works
The first job on site is protection: floors, worktops and anything near the work are covered. After that, the system is made safe and the work begins. The work on site takes a shift or more, depending on the length of the runs and the number of access points, and we clear up before we go. Somewhere as small as Cottered, the date and timings are agreed with you well before the day.
- We trace the duct and find every way in.
- Grease thickness is measured at set points.
- Out of hours, the area is protected and the access panels opened.
- Heavy deposits come out by hand, then each section is degreased.
- We close up, re-test, photograph and record anything out of reach.
Getting ready for the visit
- Plan for cooking equipment or plant to be off before we arrive
- Clear loose items from the work area
- Arrange a key holder or contact on site
Getting a quote
Every quote begins with a look at the system, either from pictures and details you send or from a site visit. After that, you get a fixed price for the work so you know the cost before we start.
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About our ductwork cleaning in Cottered
We treat ductwork like a doctor treats arteries: find the blockages, clear them, then check the flow is right. Readings taken before and after show the difference, alongside before and after photos. Common call-outs are for an insurer asking for TR19 evidence and stale grease odours from the duct, on attenuators, bends and junctions and horizontal duct runs.
For a kitchen in or near Cottered, the visit is planned around opening hours and the journey, and the clean covers the whole system, as it would anywhere: canopy, filters, duct, fan and discharge, with a certificate and photo report at the end.
For insurers and inspectors, the record counts. That is why every job is written up in a report with photos, and grease extract cleans come with a TR19® certificate issued through the BESCA Vent Hygiene Elite portal.
- Place
- Cottered (SG9)
- Region
- Hertfordshire
- Reporting
- TR19® certificate and photo report
- Quotes
- A fixed price before we start
- Working hours
- When your site is closed, plus a 24/7 line
- Call
- 0345 646 2711
- Reviewed
- 30 October 2026
Common questions in Cottered
Which fire and rescue service is responsible for Cottered?
That’s Hertfordshire Fire and Rescue Service. TR19® is not law, but it’s the benchmark many fire officers and insurers look to when they ask how often the extract is cleaned.
Do you work overnight in Cottered?
Yes, we can come after you close and finish before you open. The site is handed back ready to open. Your opening times are the first thing we ask for.
How is kitchen extract ductwork cleaned?
Through access panels along the duct. Thick deposits are removed by hand before degreasing, such as degreasers, hot water or steam.
Which kinds of sites do you work on?
Commercial premises of every kind: kitchens, offices, schools, healthcare, retail, leisure and food production. We fit the work around how the site operates.
Is a quote from pictures possible?
In many cases, yes. Photos of the system and the access, plus your opening hours and last report, are often enough. Larger or hidden systems need a survey on site first.
How much does ductwork cleaning cost in Cottered?
Size, condition, access and working hours all affect the cost. Ask us for a fixed quote and we’ll usually reply within one working day.
Is Cottered in your area?
Yes. We cover Cottered and the rest of Hertfordshire, within our South East and London area. To book, give us a ring on 0345 646 2711 or use the quote form.
How can I tell if my extract ducts are dirty?
We measure it. Using a Wet Film Thickness Test or Deposit Thickness Test, we check the grease at set points. BESA guidance says the mean shouldn’t exceed 200 microns, and 500 or more anywhere needs immediate spot cleaning.
When to call us in Cottered
Grease settles fastest where the air slows down. Long horizontal runs, bends, changes in size and the foot of a riser all collect more, and those are the points we pay most attention to.
Keep an eye out for any of the following:
- Thick deposits at the bottom of a vertical duct
- Readings above 200 microns from a grease thickness test
- Smells of old cooking grease from the ductwork
- Proof of duct cleaning for the insurer
Where a hall near Parish Church of St John the Baptist, or anywhere in Cottered, hosts lunch clubs or events, its extract gathers grease just as a café’s does.
What your quote should include
- How they set the interval to the next visit
- If the quote is a fixed price or an estimate
- Proof of accreditation you can verify
- Whether they’re fully insured
Keeping the system healthy
No system stays clean for ever, but care slows the build-up. A few tips:
- Tell us if grease leaks from the ductwork
- Diarise the next duct clean
- Check readings when the menu changes
- Don’t switch the extract off early
Every panel we open is refitted when we finish, and the surrounding area is left clean. Grease and dirty water are contained and removed.
Keep the fan on throughout service. When the air stops, grease settles in the duct, so switching off early adds to the build-up.
Why it’s worth doing now in Cottered
A fire in a greasy duct is hard to reach and hard to stop. It can travel through the ductwork to other parts of the building, so cleaning the duct is as important as cleaning the hood. Planning a trip to Cottered ahead is easier for everyone than a rushed one.
The price reflects the work, not guesswork. That’s why we survey first, from pictures or on site, and the price is agreed before work begins.
Why Cottered businesses choose us
- Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
- A single point of contact for sites across the South East and London
- A written report with pictures after each visit
- CHAS and SafeContractor accredited, with ISO 9001
Read how cleaning jobs are priced or how to check a contractor.
What affects the quote in Cottered
The price is fixed before any work begins. It takes into account:
- Working hours and out-of-hours timing
- How big the system is
- Travel, parking and unloading
- How easy every part is to reach
Several systems or sites on one quote can make for a more efficient booking. Tell us about everything you’d like looked at, and you’ll get one fixed quote.
Helping us quote
When you contact us, these details help:
- Any access panels or hatches you can see
- Your last certificate, test record or report
- Photos showing the whole system and its surroundings
- The times we could work without disrupting the site
To help us quote: the address, the type of site and when it’s open, photos of the system and the last certificate or report, if there is one. Once you have those, give us a ring on 0345 646 2711 or email us.
When it’s something else
We will always give you a straight diagnosis, so here’s what this work cannot put right:
- Duct sealed behind fixed ceilings or walls
- An extract fan that has stopped working
- Fire dampers that do not close (they need testing and remedials)
Not sure which it is? You can ring 0345 646 2711 or drop us a line and we will tell you honestly before you book.
What we work on in Cottered
- Access panels
- Multi-storey ducts
- Vertical risers
- Horizontal duct runs
- Bends and junctions
- Attenuators
Grease, kitchens and Cottered
Kitchens in Cottered get their food hygiene inspections from East Hertfordshire council. Extraction counts as kitchen equipment, so its condition can come up on the day. Keeping each certificate and photo report on file helps show the extract is looked after. About 31 miles out from central London, Cottered is part of the South East area we work across. The visit is fixed around your opening hours, not ours.
Bursars and site managers at schools such as Freman College tend to book extract cleaning for when the kitchen is empty.
Cottered is about 5 miles north-east of Stevenage, in Hertfordshire. Across the SG9 area, we can take on ductwork cleaning. We cover 381 places across Hertfordshire, large and small. There’s also a page for Chelmsford, about 28 miles away.
Ductwork cleaning in SG9 is surveyed, quoted and booked the same way as anywhere else. We cover sites on Peasecroft, The Crescent and Warren Lane and nearby roads. We also cover the places around Cottered: Throcking (1 mile north-east), Rushden (2 miles north-west), Chipping (2 miles north-east), Buntingford (2 miles east) and Aspenden (2 miles east). Larger places within reach include Stevenage (5 miles south-west), Bishop's Stortford (11 miles south-east), Welwyn Garden City (11 miles south-west), Harpenden (15 miles south-west), Hitchin (8 miles west) and Hoddesdon (13 miles south).
Around Cottered
Typical jobs here are in premises near The Bull Public House and the streets around them. Other landmarks nearby include Clothall Castle (3.5 miles north-west). For a walk, there’s Hawkins Wood.
Different parts, different methods
Horizontal duct runs
Flat runs of duct link the canopy to the riser or the outside wall. Grease drops out of the slowing air along them, so each section is cleaned through its access panels.
Bends and transitions
Bends, elbows and changes of size are where grease collects most. The air slows and drops its load, so these points get extra attention.