Hertfordshire · Ventilation duct cleaning
Ventilation duct cleaning in Farnham, Hertfordshire
TR19 air cleaning of general supply and extract ventilation ductwork in commercial buildings for commercial sites in Farnham and across Hertfordshire. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Dust marks around grilles and ceiling diffusers
- Ventilation full of debris from building work
- Odours carried round the building by the ducts
Looking after it afterwards
Results last longer with the right care. We suggest:
- Include grilles in the cleaning rota
- Get leaks near ductwork fixed quickly
- Store cleaning certificates where auditors can find them
- Keep to the inspection interval in your report
Before any works, think about the ducts. Switch it off or cover the grilles while dusty work goes on.
Good filter maintenance protects the ductwork. Overdue or badly fitted filters let dust into the supply ducts.
About our ventilation duct cleaning in Farnham
Every clean ends with a TR19® certificate and a photo report. It shows what was cleaned, anything we couldn’t reach and when the system should next be inspected, so you have it all on record. We are often asked to deal with ductwork that hasn’t been inspected and damp or stale smells from grilles, on grilles and diffusers, hospitals and care homes and offices and schools.
Somewhere as small as Farnham, ducted ventilation is normally limited to a school, a care home, a surgery or a converted business building, wherever there is one, but those that do need it inspected and cleaned like any other.
Good records are part of the job. You get a written report with photos after each visit, 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
- Records
- Photo report after every visit
- Quote
- A fixed quote up front
- Working hours
- Evenings, overnight and weekends; 24/7 emergencies
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
In-house cleaning or a specialist?
Some jobs should never be done in-house: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease need training, the right equipment and safe access. That is our job.
Your own staff can handle the daily basics: wiping down canopy surfaces, cleaning filters and keeping a simple log. Inside the ducts, risers and fan is specialist work, and that’s where we come in.
Nearby places to Farnham
Also in Farnham
What affects the cost of ventilation duct cleaning
There’s no set price list, because no two systems are the same. What we look at:
- Any permits to work or inductions
- A single visit or a regular plan
- The scale of the work
- When the work can happen, such as evenings, overnight or weekends
Whatever the type of site, the quote works the same way: how much there is, how we reach it, what state it’s in and when we can work. Call for a fixed quote and we will explain each part.
What to send for a quote
There’s no need for technical detail. Just send:
- Any previous report or certificate
- Where the site is and what kind of site it is
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- Any access panels or hatches you can see
Here’s what helps us quote: the address, the type of site and when it’s open, a few pictures and the last certificate or report, if there is one. Once you have those, call us on 0345 646 2711 or send us an email.
What happens if it’s left?
If a building in Farnham has just been refitted, now is the time to clean the ductwork. Otherwise the dust from the works comes out of the grilles once it’s switched back on. If the system at a site near Farnham fails, there may be nowhere nearby to move to.
One small site or a whole estate, we price it on the same basis: what needs doing, how we get to it and when. You will have a fixed price before any work starts.
Why us?
- Every visit written up, with pictures
- Trading since 2009
- One contact for all your sites in London and the South East
- We diagnose before we treat
Read how cleaning jobs are priced or how to check a contractor.
Farnham buildings and their air
Going by the FSA’s register, there are about 3 schools, colleges and universities serving food in Farnham and the streets around it, up to about 1.5 miles out. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. About 30 miles out from central London, Farnham is part of the South East area we work across. Evening, overnight and weekend visits are all possible. Farnham’s nearest hospital, Herts and Essex Hospital, is about 2.8 miles south-east. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
If you manage a school such as Farnham Church of England Primary School, ventilation cleaning is best booked for the holidays.
Farnham is about 2 miles north of Bishop's Stortford, in Hertfordshire. Across the CM23 area, we can carry out ventilation duct cleaning at your premises. 381 places in Hertfordshire are on our list, from busy centres to quieter spots. We also work in Chelmsford, about 19 miles from Farnham.
Ventilation duct cleaning in CM23 is surveyed, quoted and booked the same way as anywhere else. If your site is just outside Farnham, we cover 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). Within a short drive, we also cover 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).
Landmarks near Farnham
In Farnham, that means kitchens and buildings near St Mary's Catholic School. For rail, the closest station is Stansted Mountfitchet station, roughly 2.4 miles east. A little further out are Moated mound (1.7 miles south-west) and Herts and Essex Hospital (2.8 miles south-east). Open spaces near Farnham include Portingbury Hills and Aubrey Buxton Nature Reserve.
Common questions in Farnham
Can the work in Farnham be done at night or at weekends?
Yes. We work evenings, overnight and at weekends. The work in Farnham can fit around your hours. Tell us your opening hours when you ask for a quote.
Will you come out to Farnham?
Yes, we work in villages as well as towns, and Farnham is covered. The journey is planned ahead, so a few details about the route help.
Which kinds of sites do you work on?
Restaurants and pubs, hotels, schools and colleges, hospitals and care homes, offices and retail, as well as food production and leisure sites.
What happens to the waste?
Anything we remove is contained as we work and taken away with us, from grease and debris to used cleaning water. We do not leave it behind.
Are you insured?
Yes, we’re fully insured. We also hold CHAS and SafeContractor, for sites that check contractor safety.
Do you offer emergency callouts?
Yes. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line, and we will advise on what to do next.
Do we lose a day’s trading?
Not typically. Visits are timed for when the area is closed, such as overnight or at a weekend, so you keep your normal hours.
Can one contract cover all our sites?
Yes. Send the list of sites and the work at each and we’ll quote them together.
Different parts, different methods
Schools and colleges
Schools and colleges are easiest to clean during the holidays, when classrooms are empty.
Supply ductwork
Supply runs are inspected at set points first to see where cleaning is needed.
Common problems we fix in Farnham
Many systems run for long hours, day after day, and every hour of running brings more dust with it. The busier the building, the faster it builds up.
Look out for any of the following:
- Musty smells from the ventilation
- Ducts that need a clean before handover
- Systems missing access panels
- Extract ducts clogged with lint and dust
If you run a surgery, dental practice or care home near Farnham, clean ventilation matters as much to you as to a hospital like Herts and Essex Hospital (about 2.8 miles south-east).
What to look for in a quote
- What’s included in the scope, part by part
- How they set the interval to the next visit
- What records you will receive afterwards
- Whether a survey comes first
What happens on the day
The first job on site is protection: sheeting goes over floors and surfaces close to the work. Then we make the system safe and start. The work on site takes a shift or two for a small system, longer for a whole building, and the area is cleaned down before we leave. Photos of the system and how to reach it help us plan a visit to Farnham.
- First we check the layout and any past paperwork.
- We inspect the ducts at chosen points to see where cleaning is needed.
- The work area is protected and the system switched off.
- We clean the system and remove the debris from site.
- We report on the work, listing any inaccessible sections and the next inspection date.
Getting ready for the visit
- Let us know about parking and loading
- Make sure someone can let us in and lock up afterwards
- Find the previous report, if there is one
Ask for a quote
Some systems can be priced from pictures; others need a survey. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, you get a fixed price before any work starts.