Hertfordshire · Ductwork cleaning
Ductwork cleaning in Farnham, Hertfordshire
Ductwork cleaning for Farnham, with a survey first and a report with pictures at the end. Call for a fixed quote.
- Ductwork that has never been cleaned
- Duct runs that cannot be reached
- Stale grease odours from the duct
Ductwork cleaning for kitchens and businesses in Farnham
Once air leaves the canopy, it travels through ductwork that most people never see. Every horizontal run and vertical riser collects grease along the way, and that is where a kitchen fire can travel. We clean it from the inside, through access panels, to BESA TR19® Grease. If you have duct runs with no cleaning record and thick deposits at the bottom of a vertical duct, we can put it right.
In a small place like Farnham, kitchens are often in older or extended buildings, with long single-storey duct runs, and those horizontal sections are where grease settles. Access, parking and timings are agreed before the day.
The paperwork matters as much as the work. Each visit is written up with photos, listing what was done, anything we couldn’t reach and when the next visit is due. File it in your maintenance log so it’s to hand when an insurer or inspector asks.
- Location
- Farnham (CM23)
- Wider area
- Hertfordshire
- Paperwork
- Certificate and photo report
- Price
- A fixed quote up front
- Working hours
- When your site is closed, plus a 24/7 line
- Telephone
- 0345 646 2711
- Checked
- 30 October 2026
Why act early in Farnham
A partly blocked duct slows the airflow. Less air moves, so heat and smoke stay in the kitchen while the fan strains, and grease may start to leak from joints. Out of sight is the usual reason a rural system goes too long without attention.
The price reflects the work, not guesswork. That’s why every job is surveyed first, and why the quote is fixed before any work starts.
Why us?
- In business since 2009
- One contact for all your sites in London and the South East
- Fixed quotes from a survey or photos
- Work around your opening hours, with 24/7 emergency cover
Read what affects the cost or our accreditations.
How we price ductwork cleaning
We quote each job individually. These are the things that affect it:
- Parking and loading at the site
- How many systems or sites are involved
- Access, including roofs, risers and ceiling voids
- The condition we find in the survey
Kitchens, offices, schools and hospitals are all priced the same way: the size of the job, access, condition and working hours. Call for a fixed quote and we’ll go through it with you.
What we need to know
There’s no need for technical detail. It helps if you can send:
- Any access panels or hatches you can see
- Where the site is and what kind of site it is
- Any symptoms, from odd noises to smells or leaks
- Your last certificate, test record or report
Some systems can be priced from photos; others need a survey. Big or complicated sites, and systems that are hard to see in pictures, get a survey first. Either way, you get a fixed price before work begins.
What staff can safely do
If your staff spot something between visits, such as dripping grease, a noisy fan, a smell or a filter that won’t come clean, they should report it rather than try to fix it. We will take a look and send you a fixed quote.
Good housekeeping makes our visits easier, not unnecessary. Regular in-house cleaning slows the build-up, but hidden parts of the system still need specialist attention.
Grease, kitchens and Farnham
There are about 3 cafés, restaurants and staff canteens in Farnham and the streets around it, up to about 1.5 miles out, according to the Food Standards Agency’s register. Wherever those kitchens cook under a canopy, the horizontal runs and risers need cleaning as well as the hood. Farnham 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. Environmental health officers from Uttlesford council inspect food businesses in Farnham. They look at how clean the premises and equipment are, and the kitchen extract is part of that. Our report lists what was cleaned and when, which is useful to have ready.
Healthcare kitchens cannot easily close, so their extracts are cleaned overnight or between meal services; the nearest hospital to Farnham is Herts and Essex Hospital, about 2.8 miles south-east. For schools such as Farnham Church of England Primary School, kitchen extract cleaning is usually booked for the holidays, when the canteen is closed.
Farnham is about 2 miles north of Bishop's Stortford, in Hertfordshire. Whether your site is in the middle of Farnham or further out, ductwork cleaning is available to all kinds of commercial premises, from a single unit to a large public building. Farnham is one of 381 places in Hertfordshire we cover for commercial clients. Our Chelmsford page covers sites nearby (19 miles or so).
We cover every part of the CM23 postcode area for ductwork cleaning and the roads nearby. We also cover the places around Farnham: Uppend (1 mile north), Mount Pleasant (1 mile north), Manuden (2 miles north-east), Bentfield Green (2 miles east) and Stansted Mountfitchet (2 miles east). We also work in nearby towns such as Stevenage (14 miles west), Hoddesdon (12 miles south-west), Hertford (12 miles south-west), Ware (10 miles south-west), Baldock (15 miles north-west) and Broxbourne (13 miles south-west).
Around Farnham
In Farnham, that means kitchens and buildings near St Mary's Catholic School, among other places. The nearest railway station is Stansted Mountfitchet station, roughly 2.4 miles east of the centre. A little further out are Moated mound (1.7 miles south-west) and Herts and Essex Hospital (2.8 miles south-east). The countryside around Farnham includes Portingbury Hills and Aubrey Buxton Nature Reserve.
What we do, step by step
On the day, we arrive at the time agreed with you, often in the evening, overnight or at the weekend so the site keeps working. Equipment that has to be off is switched off and allowed to cool first, and floors and nearby surfaces are sheeted. The work itself takes from a few hours to more than one visit, depending on duct length and access. A quick note on how to find the site and where to park makes a visit to Farnham run smoothly.
- First we diagnose: the route, the access and the grease levels.
- You get a fixed price before work starts.
- Each section is cleaned in turn through its access panel.
- Bends, risers and the base of each riser get extra attention.
- The duct is signed off with readings, pictures and a next clean date.
How to prepare
- Have your last certificate or report to hand
- Name a contact who can let us in at the agreed time
- Move anything stored near the system
Getting a quote
Every quote begins with a look at the system, either from pictures and details you send or from a site visit. Then we send a fixed price so you know the cost before work begins.
Read more
Looking after it afterwards
To keep the system working properly between visits:
- File each certificate and photo report in the maintenance log
- Keep access panels clear of stored items
- Get panels fitted where the duct couldn’t be cleaned
- Ask for a grease thickness test if the kitchen gets busier
After the clean, the same points are tested again, giving you before and after readings. Before and after photos sit next to the numbers.
Some signs mean the duct needs attention sooner: grease leaking from duct joints, smells, or a fan that sounds rough. Testing will show whether any section has reached 500 microns.
For landlords and multi-site operators
Where a tenant occupies the premises but the landlord owns the building, it’s worth checking the lease for who maintains the systems. We can quote either party, and the report can go to both.
Multi-site operators often want one contractor and one number. We work across London and the South East, so a run of sites can go into one programme and kept on a regular cycle.
Farnham: your questions answered
Will you come out to Farnham?
Yes, smaller places are covered as well as towns. A survey first, from photos or a visit, means we arrive with the right kit.
Do you clean school canteen extracts around Farnham out of term?
Yes. Half-terms and the summer break are the natural time for school work. The FSA’s register shows about 3 schools and colleges with food registrations within roughly a mile and a half of Farnham. Send us your term dates when you call us on 0345 646 2711 or drop us a line, and we will fit the work in.
Can you set up regular visits?
Yes. Tell us what you have and how it’s used and we will propose a schedule with a fixed quote.
Do we have to stop cooking while the ducts are cleaned?
Only while we’re working, and we work around you. Most kitchens book overnight or weekend cleans, so no service is lost.
Can you come out in an emergency?
Yes. Our emergency line runs 24/7, for problems that can’t wait. Call us any time and explain what’s happened.
How do you know if the ductwork needs cleaning?
Start with the date of the last clean. If it’s overdue, or there is not one, a clean is due, and grease readings will confirm how urgent it is.
Are you insured?
Yes. Duct Doctor is fully insured, and we can share the details when you need them.
Are you accredited?
We’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we carry full insurance.
What we are called out for in Farnham
The further the air travels from the cooking, the cooler it gets. As it cools, the grease it carries condenses onto the duct walls, so duct runs keep collecting grease long after the canopy.
If you notice any of these, it’s worth a diagnosis:
- Duct runs that cannot be reached
- Duct runs with no cleaning record
- Smells of old cooking grease from the ductwork
- Proof of duct cleaning for the insurer
If you run a church or community hall kitchen, near Church of St Mary the Virgin or elsewhere in Farnham, its extract still collects grease from every lunch and event.
What your quote should include
- Whether VAT is included
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- If they look at the system before pricing
- Whether inaccessible sections are listed on the report