Hertfordshire · Ductwork cleaning
Ductwork Cleaning in Kemprow
Specialist ductwork cleaning for Kemprow: diagnosis first, then a fixed quote, the work and a report with pictures. Ask us for a fixed quote.
- Smells of old cooking grease from the ductwork
- Readings above 200 microns from a grease thickness test
- Ductwork that has never been cleaned
Keeping the system healthy
How long the results last depends on use and care. Here’s what we suggest:
- Diarise the next duct clean
- Ask us about extra access panels where sections can’t be reached
- Ask for a grease thickness test if the kitchen gets busier
- File each certificate and photo report in the maintenance log
Grease readings are taken again at the same set points, so the report shows the before and after figures. Before and after photos sit next to the numbers.
Extra access panels mean more of the duct gets cleaned each time. It does not stop grease forming, but it stops it building unseen.
Ductwork cleaning in Kemprow
Grease in a duct is hidden, which is exactly why it’s dangerous. A flare-up drawn up from the range can light it, and fire can then run along the ductwork to other parts of the building. Removing it is the whole point. Typical jobs include ductwork that has never been cleaned and sections of duct with no access panels, across access panels, attenuators and vertical risers.
For a kitchen in or near Kemprow, the visit is planned around opening hours and the journey, and the clean itself is the same full TR19® job as in any town: canopy to discharge, then a TR19® certificate and a photo report.
The paperwork matters as much as the work. You get a written report with pictures after every visit, covering the work done, any areas we couldn’t access and a recommended next date. File it in your maintenance log so it’s to hand when an insurer or inspector asks.
- Place
- Kemprow (WD25)
- Region
- Hertfordshire
- Reporting
- Certificate and photo report
- Price
- Fixed quote, typically within a working day
- Working hours
- Nights, weekends or holidays to suit you
- Phone
- 0345 646 2711
- Page updated
- 30 October 2026
For landlords and multi-site operators
Keeping records across a portfolio is half the battle. Each visit produces a dated report with photos, ready to show insurers, fire officers or EHOs.
Facilities teams in offices, schools and healthcare sites book us too in Kemprow and across Hertfordshire. Work can be phased by floor, building or site around the people who use them.
How the job changes from site to site
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.
Access panels
Access panels are the doors that let us into the duct. Without them, parts of the duct cannot be reached and the report has to say so.
Leave it or put it right?
BESA guidance says grease shouldn’t exceed a mean of 200 microns between cleans. Anywhere that reaches 500 microns or more needs immediate spot cleaning. Putting off the clean only pushes readings higher. In a small place like Kemprow, a system that fails can take a site out of use.
The price reflects the work, not guesswork. That’s why every job is surveyed first, and the price is agreed before work begins.
Why choose Duct Doctor in Kemprow
- CHAS and SafeContractor accredited, with ISO 9001
- In business since 2009
- Fixed quotes, usually within one working day
- Evenings, overnight and weekends, plus 24/7 emergency callout
Take a look at our cost guide or how to check a contractor.
Fixed quotes for ductwork cleaning in Kemprow
You will get a fixed price before any work starts. It’s based on:
- The number of sites or systems
- How easy every part is to reach
- Parking and loading at the site
- Any permits to work or inductions
Combining work into one visit or one programme can make for a more efficient booking. Mention every system or site you need covered and we’ll price it together.
Asking for a quote
A few details help us quote accurately. With your enquiry, please include:
- Problems your staff have spotted
- The roof, plant room or outside wall the system runs to
- Wide pictures of the system and the area around it
- The postcode and the type of business
There’s no standard price list, because no two systems are the same. Instead, we look at your site first, from pictures or a survey, then send a fixed quote. To get going, call 0345 646 2711, or send details by email.
Questions from Kemprow
Do you work at weekends in Kemprow?
Yes. We work evenings, overnight and at weekends. Your customers, staff or residents in Kemprow needn’t be disturbed. Tell us your opening hours when you ask for a quote.
Can you get to a site in Kemprow?
Yes. Kemprow is within the area we cover across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do we need to close while you work?
Not normally. The area we’re working in has to be out of use while we are there, so we book a time when it would be closed anyway.
What does ductwork cleaning cost?
We do not publish prices, because the cost depends on the job: how big it is, what state it’s in, how we reach it and the working hours. You get a fixed price before any work starts.
Does the law say we must follow TR19?
No. TR19® is BESA’s specification, not legislation. The law is the Regulatory Reform (Fire Safety) Order 2005, which makes the responsible person assess and reduce fire risk, and cleaning to TR19® is the recognised way to show grease is under control.
What information do you need?
The site address, the type of premises and your opening hours, plus pictures of the system and your last certificate or report if you have one.
Can you quote from photos?
Often, 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 do you protect the area?
By covering it before any work starts. The work is kept contained and leave the area clean.
How the visit works
Protection comes first: floors, worktops and anything near the work are covered. Then we make the system safe and start. The work on site takes anything from a few hours to several visits, depending on the length of duct, and we clear up before we go. A few photos of the system help us make the most of a visit to a place like Kemprow.
- We map the duct route and check where the access panels are.
- Set points along the runs are tested for grease.
- Access panels are opened and heavy deposits scraped out by hand.
- Next the ducts and risers are degreased, using whatever suits the deposit.
- We test again, take photos and note any part that couldn’t be reached.
Before we arrive
- Tell us about site rules, permits or sign-in
- Clear the space around the work
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
Getting a quote
Every quote begins with a look at the system, either from photos and details you send or from a site visit. After that, you get a fixed price for the work, before any work starts.
Advice
Grease, kitchens and Kemprow
The Food Standards Agency lists about 8 pubs, bars and clubs and about 3 hotels and B&Bs as registered food businesses within 1.5 miles or so of the middle of Kemprow. Breakfasts, bar meals and functions all put grease into the extract wherever they’re cooked. Fire safety in Kemprow falls to Hertfordshire Fire and Rescue Service. Its fire safety officers can audit commercial kitchens, and grease in the extract is part of a kitchen’s fire risk. Environmental health officers from Hertsmere council inspect food businesses in Kemprow. A greasy canopy or dripping filters are the sort of thing an inspection can pick up. Our report lists what was cleaned and when, which is useful to have ready.
Volunteers running a hall kitchen near St John, or anywhere in Kemprow, may not know when the extract was last cleaned, and a grease test settles it. If your kitchen is in a listed or historic building, like the houses around Kemprow (High Elms Manor is about 2.7 miles north-west), fitting access panels needs care.
Kemprow is about 3 miles north of Bushey, in Hertfordshire. Every kind of commercial site in Kemprow, we can take on ductwork cleaning. Visits can be booked for evenings, overnight or weekends so trading isn’t interrupted. Across Hertfordshire, we cover 381 places, Kemprow among them. There’s also a page for London, roughly 16 miles from Kemprow.
Postcode districts we cover here for ductwork cleaning: WD25. If you need ductwork cleaning at premises on Kemprow and High Cross or anywhere close by, we can help. Other places close to Kemprow include Round Bush (1 mile south), Aldenham (1 mile south-west), Radlett (1 mile east), Letchmore Heath (1 mile south) and Patchetts Green (1 mile south-west). Within a short drive, we also cover Watford (3 miles south-west), Hemel Hempstead (7 miles north-west), St Albans (5 miles north), Welwyn Garden City (10 miles north-east), Harpenden (9 miles north) and Hoddesdon (15 miles east).
Landmarks near Kemprow
Typical jobs here are in premises near Garston Park, Three Horseshoes Public House and Queens' School. The closest station to Kemprow is Radlett station, about 1.1 miles east. Nearby you’ll also find Radlett and District Museum (1.1 miles east) and Harlequin Centre (2.9 miles south-west). Green spaces nearby include Broad Colney Lakes and Verulamium Lake.
Do you need ductwork cleaning in Kemprow?
A greasy duct is a fire path, in Kemprow as anywhere. Burning grease can carry fire through the ductwork to other rooms or floors, which is why the responsible person needs it under control.
Keep an eye out for any of the following:
- Thick deposits at the bottom of a vertical duct
- Thick crusts of old grease along the duct
- Readings above 200 microns from a grease thickness test
- Smells of old cooking grease from the ductwork
School kitchens, at schools like Fair Field Junior School for example, are normally cleaned in the holidays so no lunches are lost.
Questions to ask before booking
- What records you’ll receive afterwards
- What happens if part of the system can’t be accessed
- How VAT is shown on the quote
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor