Kent · Air handling unit cleaning
Oldbury AHU cleaning
AHU cleaning for Oldbury, from a team that has been trading since 2009. Evenings, overnight and weekends, plus a 24/7 emergency line.
- Air handling units due a clean after building work
- Filters that are clogged or overdue
- Rooms that smell stuffy when the system runs
What AHU cleaning cannot fix
Some problems need a different service or another trade:
- A system that’s undersized for the building
- Controls and BMS settings that run the unit
- Faulty motors, drives or bearings
Not sure which it is? You can ring 0345 646 2711, or send details by email and we’ll tell you honestly before you book.
Parts of the system we cover
- Filter sections
- Heating and cooling coils
- Dampers and louvres
- Drain trays
- Internal panels
- Supply and extract fans
How we handle AHU cleaning in Oldbury
Our AHU cleaning covers sites in Oldbury and the rest of Kent, in buildings such as offices, schools, healthcare sites and shops. The work is timed around when the system can be switched off, including evenings, nights and weekends. We are often asked to deal with units needing a clean before a new tenant or handover and units that have only ever had filter changes, across filter sections, dampers and louvres and heating and cooling coils.
In rural areas, ventilation units are often in roof voids or outbuildings, which makes them easy to overlook.
Duct Doctor has been trading since 2009, as a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we’re fully insured.
- Location
- Oldbury (TN15)
- Region
- Kent
- Reporting
- Report and pictures after the visit
- Quotes
- Fixed quote, typically within a working day
- Working hours
- Out of hours as standard, 24/7 emergency line
- Call
- 0345 646 2711
- Reviewed
- 30 October 2026
Leave it or put it right?
If people in a building in Oldbury complain about stuffy or smelly air, the AHU is worth looking at. Cleaning it deals with the cause rather than the symptom. Equipment tucked in a roof space or outbuilding near Oldbury rarely gets looked at unless someone books it.
Working hours, access and the scale of the site can all change the price. We take each of them into account, and the price is fixed before we start.
Why us?
- In business since 2009
- A single point of contact for sites across the South East and London
- Accredited under CHAS and SafeContractor, with ISO 9001
- Each visit written up, with photos
See what affects the cost or our accreditations and certificates.
Multi-site and managed buildings
Whether it’s one building or many, the standard is the same: diagnosis, a fixed price, work booked around your hours and a written report with pictures.
The Fire Safety Order 2005 puts the duty to manage fire risk on the responsible person, and that can be the employer, the owner, a landlord, a facilities manager or a managing agent. Where responsibility is shared, records matter even more.
Signs you need AHU cleaning in Oldbury
Cooling coils create condensation, and that water has to go somewhere. A blocked outlet or a badly sloped tray leaves standing water, and slime and smells soon follow.
What we are most often called out for:
- Air handling units with blocked filters
- Drain trays holding standing water
- Plant that has been serviced but not cleaned
- Odours coming through the supply air
Sevenoaks Hospital, about 3.5 miles west, is the nearest hospital to Oldbury, and healthcare sites of every size need their supply air kept clean.
Comparing quotes
- What records you will receive afterwards
- If the quote is a fixed price or an estimate
- Proof of insurance
- Whether the quote shows VAT
Staff cleaning versus specialist work
For ventilation and air handling systems, in-house care is mostly about checks: keeping grilles clear, noting unusual noise or smells and logging filter changes. The inside of ducts and units needs a specialist.
If your staff spot something between visits, such as dripping grease, a noisy fan, a smell or a filter that will not come clean, it’s best reported rather than tackled in-house. We can diagnose it and quote.
Also in Oldbury
Common questions in Oldbury
Can you come to Oldbury after we close?
Yes, evening, overnight and weekend work is normal for us. Your customers, staff or residents in Oldbury needn’t be disturbed. When you phone us on 0345 646 2711 or drop us a line, mention when the site is quiet.
Will you come out to Oldbury?
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 offer maintenance contracts?
Yes. Send details of the systems and how they’re used, and we’ll suggest a schedule and quote for it.
Do you repair air handling units?
Mechanical repairs to the unit are for your HVAC maintenance contractor. We clean the unit and report anything we see that needs attention.
How much notice do you need?
It depends on the time you need and how big the job is. Tell us your preferred dates when you ask for a quote, and for anything urgent, ring our 24/7 emergency line.
What does AHU cleaning cost?
The cost depends on the size of the system, its condition, access and timing. Call for a fixed quote, typically ready within one working day.
How often should an air handling unit be cleaned?
That’s set by inspection, in line with TR19® Air. A hard-working unit, or one serving a hospital or care home, may need cleaning more often.
Which accreditations do you hold?
We are 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 the work involves, part by part
Filters
Filter condition tells you a lot about the rest of the unit. We photograph them for the report.
Heating and cooling coils
Because cooling coils run wet, the dirt on them tends to cling. The coil and its drain tray are cleaned as one job.
AHU cleaning around Oldbury
There are about 3 care, childcare and hospital premises on the FSA’s food hygiene register within 1.5 miles or so of the middle of Oldbury. Buildings like these often rely on mechanical ventilation, which TR19® Air covers. Oldbury is about 22 miles from central London, well within the area we cover across London and the South East. Evening, overnight and weekend visits are all possible. For Oldbury, the closest hospital is Sevenoaks Hospital, roughly 3.5 miles west. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
For schools like Ightham Primary School, the holidays are the usual time to inspect and clean ventilation.
Oldbury is about 4 miles east of Sevenoaks, in Kent. Whether your site is in the middle of Oldbury or further out, AHU cleaning is available to all kinds of commercial premises, from a single unit to a large public building. Oldbury is one of 922 towns, villages and districts in Kent we cover for AHU cleaning. You can also see our page for Maidstone, roughly 11 miles from Oldbury.
Every address in TN15 is within our area for AHU cleaning, from busy streets to back roads. Local streets include Oldbury Lane, Spring Lane and Sevenoaks Road, all of which we cover for AHU cleaning. Other places close to Oldbury include Ightham (1 mile south), Styants Bottom (1 mile west), Ivy Hatch (1 mile south), Sheet Hill (1 mile south-east) and Stone Street (1 mile south-west). We also work in nearby towns such as Maidstone (11 miles east), Dartford (11 miles north), Sevenoaks (4 miles west), Royal Tunbridge Wells (10 miles south), Gravesend (11 miles north-east) and Tonbridge (6 miles south).
Local landmarks in Oldbury
Around Oldbury, our work takes us to kitchens and buildings near The Old House, Ivy Hatch Nature Reserve and Wrotham School and the streets around them. The nearest railway station is Borough Green & Wrotham station, about 1.4 miles north-east of the centre. A little further out are Beechin Wood Archery Museum (2.4 miles east) and Ightham Court (0.8 miles north-east).
How the visit works
When we arrive, we check the system against the survey or the pictures you sent. Anything unexpected is raised with you before we go further. After that, the work takes one overnight shift for many single units, with bigger plant phased. If you can send photos, we can arrive in Oldbury knowing what to expect.
- We agree a shutdown window that suits the building.
- We take before pictures of each section of the unit.
- We work through the unit from the intake to the outlet.
- We finish with the fan section and the drain tray.
- After pictures are taken and the certificate issued.
Before we arrive
- Arrange a key holder or contact on site
- Let us know about parking and loading
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
Ask for a quote
Getting a quote does not take long. Send a few details and pictures, and we normally reply with a fixed quote within one working day. If we need to see the system first, we book a survey around your hours.