Hampshire · Ventilation duct cleaning
Thedden ventilation duct cleaning
One call covers TR19 Air cleaning of general supply and extract ventilation ductwork in commercial buildings in Thedden, from survey to sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Systems missing access panels
- Dusty supply ductwork that hasn’t been cleaned in years
- Systems with no record of inspection or cleaning
About our ventilation duct cleaning in Thedden
Dust in ventilation ductwork isn’t only a cleanliness issue. It can restrict airflow, make the system work harder and send dust back into occupied rooms. A clean puts the system back as it should be. If you’re dealing with systems missing access panels and supply ducts with years of dust inside, we can put it right, from hospitals and care homes, offices and schools and supply ductwork onwards.
In rural areas, ventilation units are often in roof voids or outbuildings, which makes them easy to overlook.
It’s worth checking any contractor’s accreditations. We’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we hold CHAS, SafeContractor and ISO 9001, with full insurance on top.
- Place
- Thedden (GU34)
- Region
- Hampshire
- Reporting
- Written report with pictures
- Quote
- A fixed quote up front
- Hours
- Overnight and weekend work, 24/7 emergency callout
- Telephone
- 0345 646 2711
- Reviewed
- 30 October 2026
Why deal with it now?
If a building in Thedden has just been refitted, now is the time to clean the ductwork. Otherwise construction dust left in the ducts is blown out once the system runs. Out of sight is the usual reason a rural system goes too long without attention.
Combining work into one visit or one programme often makes better use of the time. Mention every system or site you need covered and we’ll price it together.
Why us?
- CHAS, SafeContractor and ISO 9001
- Fixed quotes from a survey or photos
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- A single point of contact for sites across the South East and London
Take a look at our cost guide and how to check a contractor.
Do you need ventilation duct cleaning in Thedden?
It matters for the people inside: dirt in the ducts can come back out of the grilles, slow the air and add strain on fans. In hospitals, care homes and schools, clean air is especially important.
Signs it’s time to call us include:
- Ventilation full of debris from building work
- Dirty diffusers dropping dust into rooms
- Extract ducts clogged with lint and dust
- Ductwork that hasn’t been inspected
Hospitals such as Alton Community Hospital (about 1.6 miles east) show how much a building can rely on clean ventilation, and smaller healthcare sites near Thedden are no different.
Before booking anyone
- Whether they’re fully insured
- How VAT is shown on the quote
- What happens if part of the system cannot be accessed
- Whether the figure could change on the day
What your team can do, and what needs us
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. Leave those to us.
Day-to-day cleaning is something your team can do: wiping down canopy surfaces, cleaning filters and keeping a simple log. Inside the ducts, risers and fan is specialist work, and that is where we come in.
What else we do in Thedden
What ventilation duct cleaning cannot fix
Ventilation duct cleaning cannot fix everything, and we’ll tell you before any work starts. It will not put right:
- Controls and BMS faults that affect the system
- Ducts that are damaged, corroded or leaking and need replacing
- Leaks from roofs, pipes or walls into the ductwork
If in doubt, call us on 0345 646 2711 or drop us a line and we’ll say what we think.
What we work on in Thedden
- Offices and schools
- General extract ductwork
- Grilles and diffusers
- Supply ductwork
- Toilet extract systems
- Hospitals and care homes
Keeping the system healthy
Here’s the after-treatment advice, in brief:
- Log every filter change
- Tell your facilities team about dirty diffusers
- File each ventilation report with the building records
- Make sure nothing is stacked against extract grilles
If there’s building work planned, protect the ventilation. Turn off the system or cover the openings during dusty jobs.
Protect the system during building work by switching it off or covering the grilles.
How the visit works
Everything the job needs comes with us, including protection sheets, the right tools and access kit. All we need from you is clear access and the right equipment switched off. The visit takes anything from a single shift for a small office to a planned programme of nights for a large building. We agree a date with you, plan the drive to Thedden and turn up when the site is quiet.
- First we check the layout and any past paperwork.
- We inspect the ducts at chosen points to see where cleaning is needed.
- We cover the area below and turn off the system.
- Ducts, grilles and diffusers are cleaned and the debris taken away.
- We report on the work, listing any inaccessible sections and the next inspection date.
How to prepare
- Plan for cooking equipment or plant to be off before we arrive
- Mention any locked doors, roof access or ceiling voids
- Have your last certificate or report to hand
Get a fixed quote
Want a quote for ventilation duct cleaning? Please call us on 0345 646 2711, or email photos with a few details about the site. We will talk you through the work and send you a fixed quote before you commit to anything.
Related advice
How the job changes from site to site
Grilles and diffusers
Grilles and diffusers that are designed to come out are removed for cleaning, then refitted.
Supply ductwork
Supply ducts carry air from the AHU into the rooms. Dust that slips past the filters builds up inside, and we remove it through access panels.
Ventilation in Thedden buildings
At about 47 miles from central London, Thedden sits well inside the area we cover. We work evenings, overnight and at weekends, so the visit fits around the site. For Thedden, the closest hospital is Alton Community Hospital, roughly 1.6 miles east. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes.
Wherever a school like Amery Hill School has ducted ventilation, a half-term visit keeps the work out of lesson time.
Thedden is about 2 miles west of Alton, in Hampshire. If you need ventilation duct cleaning in Thedden, please call 0345 646 2711 or use the quote form for a fixed quote. Our area covers London and the South East, including Thedden. Thedden is one of 683 places in Hampshire we cover for commercial clients. Our Reading page covers sites nearby (21 miles or so).
Work in GU34 is surveyed, quoted and booked the same way as anywhere else. If your site is just outside Thedden, we cover Beech (1 mile south-east), Wivelrod (1 mile south-west), Bentworth (1 mile north-west), Holt End (1 mile west) and New Copse (2 miles west). We also work in nearby towns such as Basingstoke (9 miles north), Winchester (14 miles south-west), Farnborough (15 miles north-east), Fleet (12 miles north-east), Aldershot (13 miles north-east) and Petersfield (10 miles south).
What’s near Thedden
The closest station to Thedden is Alton station, roughly 2.6 miles east. Well-known places in the area include Alton Community Hospital (1.6 miles east) and Barton Castle (3.9 miles west). For a walk, there’s King's Hill.
Questions from Thedden
Can you work in Thedden outside opening hours?
Yes, evening, overnight and weekend work is normal for us. Your customers, staff or residents in Thedden needn’t be disturbed. Tell us your opening hours when you ask for a quote.
Is Thedden in your area for ventilation duct cleaning?
Yes, Thedden is within the area we cover across London and the South East. A fixed quote usually follows within one working day of the survey details.
Are you fully insured?
Yes, fully. We also hold CHAS and SafeContractor for clients who vet their contractors.
Do you look at the system first?
Yes. We always survey first, either from photos and details you send or on a site visit. Then you get a fixed quote.
Is TR19 cleaning required by law?
No. TR19® itself is not law; it’s a BESA specification. The legal duty comes from the Regulatory Reform (Fire Safety) Order 2005: the responsible person must assess and reduce fire risk, and cleaning to TR19® is the recognised way to show grease is under control.
What do you need from me for a quote?
Some pictures and a quick description of the system, with the address and opening hours. If we need more, we will ask.
Will you clean the vents in the rooms?
Yes. We clean the grilles and diffusers along with the ductwork, so dust is not left at the outlets.
What happens if parts of the ductwork can’t be reached?
Nothing is hidden: any section we couldn’t get into is listed. Access panels can be added where necessary.