Hertfordshire · Ductwork cleaning
Ductwork Cleaning in Colney Heath
Ductwork cleaning for Colney Heath and the surrounding area: a survey, a fixed price, careful work and proper paperwork. Ask us for a fixed quote.
- Stale grease odours from the duct
- Ductwork that has never been cleaned
- High readings at a recent grease test
Between visits
Looking after the system between visits is straightforward, and it makes the next visit easier:
- Tell us if grease leaks from the ductwork
- Do not switch the extract off early
- Make sure filters are seated properly
- File each certificate and photo report in the maintenance log
Any section of duct we couldn’t reach is listed on the report and why. You can then decide whether to have access panels fitted.
Extra access panels mean more of the duct gets cleaned each time. Grease you can reach is grease that gets removed.
Ductwork cleaning for kitchens and businesses in Colney Heath
Many ducts were installed with too few access doors. Where a section cannot be reached, TR19 expects it to be recorded on the report, and we can fit new access panels so it’s cleaned next time. An honest report beats a guess. If you have thick deposits at the bottom of a vertical duct and readings above 200 microns from a grease thickness test, we can put it right.
In a small place like Colney Heath, kitchens are often in older or extended buildings, with long single-storey duct runs, where grease settles in the flat sections. Access, parking and timings are agreed before the day.
Accreditations are easy to claim and worth checking. We are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we hold CHAS, SafeContractor and ISO 9001, and we are fully insured.
- Location
- Colney Heath (AL4)
- Region
- Hertfordshire
- Paperwork
- Certificate plus before-and-after photos
- Price
- A fixed quote up front
- When we work
- When your site is closed, plus a 24/7 line
- Phone
- 0345 646 2711
- Page updated
- 30 October 2026
Towns and villages near Colney Heath
Other services in Colney Heath
What we do, step by step
There’s very little for your team to do on the day. A contact on site lets us in at the agreed time and points us to the system, and we take it from there. Before we leave, the area is tidied and the paperwork follows. In a small place like Colney Heath, the journey is planned ahead and the visit arranged around the site’s hours.
- The duct route is surveyed and every access point found.
- Grease thickness is measured at set points.
- Once the kitchen has closed, we protect the area and open the panels.
- Thick grease is scraped out, then the runs and risers are degreased.
- Panels are closed, readings and pictures repeated, and unreachable sections recorded.
How to prepare
- Tell us where we can park and unload
- Move anything stored near the system
- Arrange a key holder or contact on site
Getting a quote
To get a fixed quote, ring 0345 646 2711 or send us an email and tell us the type of site, your opening hours and roughly what the system looks like. Photos and the last report, if you have one, make the quote quicker. We usually come back within one working day.
Related advice
What staff can safely do
Away from the kitchen, the in-house job is mainly checking: clear grilles, a log of filter changes and reporting anything odd. Cleaning inside ducts and units is specialist work.
Keep a record of what your team does. A dated log of in-house cleaning and checks helps show that the system is managed between specialist visits, next to our reports.
Why it’s worth doing now in Colney Heath
Grease left in a duct in Colney Heath hardens over time. It bakes into a hard layer that takes far longer to remove, so the later the clean, the bigger the job. It’s worth booking a check, because nobody sees inside a duct day to day.
You will not find a price list here, because each job is priced on what it involves. Call for a fixed quote, and we will talk you through it.
Why choose Duct Doctor in Colney Heath
- A fixed price before any work starts
- We’re fully insured
- One number for every site across the South East and London
- In business since 2009
Colney Heath questions
Which fire authority looks after Colney Heath?
Colney Heath is in the area of Hertfordshire Fire and Rescue Service. TR19® isn’t law, but it’s the benchmark many fire officers and insurers look to when they ask how often the extract is cleaned.
Can you clean school kitchen extracts in Colney Heath during the holidays?
Yes. Half-terms and the summer break are the natural time for school work. Food Standards Agency records list about 5 schools, colleges and universities with registered kitchens within about a mile and a half of Colney Heath. You can phone us on 0345 646 2711 or use the quote form with the dates the site is empty.
How long does it take to clean extract ducts?
It takes anything from a few hours to several visits, depending on the length of duct. We will confirm the time when we quote.
What happens if you cannot reach some of it?
We record them on the report, with a note of where it is, and we tell you what would make it reachable, such as extra access panels in ductwork.
Do you work in Colney Heath?
Yes. We cover Colney Heath and the rest of Hertfordshire, within our South East and London area. For a fixed quote, call us on 0345 646 2711 or use the quote form.
Can you price the work without visiting?
Often, yes. With good pictures, the site type and your last report, we can price many jobs. Where we cannot see enough, we arrange a survey.
Which sectors do you work in?
Restaurants and pubs, hotels, schools and colleges, hospitals and care homes, offices and retail, plus food production and leisure sites.
Which accreditations do you hold?
CHAS, SafeContractor, ISO 9001 and BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. We’ve been trading since 2009 and we’re fully insured.
Different parts, different methods
Attenuators and discharge
At the end of the duct is the discharge. Grease can collect there and stain the area around it, so it’s cleaned as far as safe access allows.
Vertical risers
Cleaning a riser needs access along its height. Any part that cannot be safely reached is recorded.
Honest limits
Before booking, it helps to know what’s not included:
- Ductwork that’s corroded, split or holed (that needs a ductwork contractor)
- A duct that is too small or badly routed for the kitchen (a design issue)
- A damper stuck open in the duct
If in doubt, call us on 0345 646 2711 or email us and we will say what we think.
Where we work
- Vertical risers
- Access panels
- Attenuators
- Bends and junctions
- Multi-storey ducts
- Horizontal duct runs
What affects the cost of ductwork cleaning
There’s no set price list, because sites vary so much. The quote depends on:
- Site requirements such as sign-in and permits
- Where the site is and how we reach it
- A single visit or a regular plan
- The condition of the system
What you pay reflects the actual work. That is why we survey first, from pictures or on site, and the price is agreed before work begins.
Helping us quote
Before you ask for a quote, gather:
- Close-ups of filters, grilles, hatches or access panels
- Problems your staff have spotted
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- The times we could work without disrupting the site
Photos are enough for some jobs, while others need a look on site. Big or complicated sites, and systems that are hard to see in pictures, get a survey first. Either way, the quote is fixed before any work is booked.
Kitchen extracts in Colney Heath
Food Standards Agency records list about 37 cafés, restaurants and staff canteens and about 14 takeaways and sandwich shops within about 1.5 miles of central Colney Heath. Each kitchen that cooks under a canopy sends grease-laden air into a duct, where it cools and settles. Colney Heath is covered by Hertfordshire Fire and Rescue Service. In most workplaces, including commercial kitchens, it’s the fire and rescue authority that enforces the Fire Safety Order. Food hygiene inspections in Colney Heath are the job of St Albans City council’s environmental health team. They look at how clean the premises and equipment are, and the kitchen extract is part of that. A TR19® certificate and photo report after each clean gives you a record to show an inspector.
If you run catering at a healthcare site, such as a hospital like Hill End Hospital about 2.3 miles west, the extract may need cleaning more often than a part-time kitchen. For schools such as Colney Heath Junior Mixed Infant and Nursery School, kitchen extract cleaning is normally booked for the holidays, when the canteen is closed. If you run a church or community hall kitchen, near Church of St Mark or elsewhere in Colney Heath, its extract still collects grease from every lunch and event.
Colney Heath is about 2 miles south-west of Hatfield, in Hertfordshire. We carry out ductwork cleaning for businesses, landlords and public buildings in Colney Heath and the rest of Hertfordshire. Colney Heath is one of 381 towns, villages and districts in Hertfordshire where we work for commercial clients. For sites nearby, see our London page, about 18 miles away.
All of AL4 is within our area for ductwork cleaning, from busy streets to back roads. If you need ductwork cleaning at premises on High Street, Fair View and Roestock Lane or anywhere close by, we can help. We also cover Sleapshyde (1 mile north-west), Welham Green (1 mile east), Smallford (1 mile north-west), Hatfield (2 miles north-east) and Tyttenhanger (2 miles west). We also work in nearby towns such as Watford (8 miles south-west), Hemel Hempstead (9 miles west), Stevenage (12 miles north), St Albans (3 miles west), Welwyn Garden City (5 miles north-east) and Harpenden (7 miles north-west).
What’s near Colney Heath
Around Colney Heath, our work takes us to kitchens and buildings near Chalkdrawers Arms, Bishop's Hatfield Girls' School and North Mimms Park, among other places. The nearest railway station is Welham Green station, about 1.7 miles east. Nearby you will also find Hill End Hospital (2.3 miles west) and The Bunker at Hatfield Police Station (1.9 miles north). Not far away are Verulamium Lake and Colney Heath Local Nature Reserve.