Oxfordshire · Air handling unit cleaning
AHU Cleaning in Rowstock
Air handling unit cleaning for Rowstock, with a survey first and a report with photos at the end. Call for a fixed quote.
- Coils clogged with dust and debris
- Condensate trays that will not empty
- Units that have only ever had filter changes
About our AHU cleaning in Rowstock
If the units serving a building in Rowstock have only had filter changes for years, the coils, fan and casing can be carrying far more dirt than anyone has seen. A full AHU clean takes in the whole unit. If you have filters that are clogged or overdue and drain trays holding standing water, we can put it right.
Work in a small place like Rowstock starts with agreeing access and timings, and the ventilation is inspected, cleaned and recorded the same as anywhere.
Duct Doctor has been trading since 2009, and 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.
- Where
- Rowstock (OX11)
- Region
- Oxfordshire
- Paperwork
- Written report with pictures
- Quotes
- Fixed quote, normally within a working day
- When we work
- Overnight and weekend work, 24/7 emergency callout
- Telephone
- 0345 646 2711
- Page updated
- 30 October 2026
What we do, step by step
The first job on site is protection: floors, worktops and anything near the work are covered. Then we make the system safe and start. It takes a single shift for a typical unit, longer for large or heavily soiled ones, and we clear up before we go. Visits to a village like Rowstock are booked in advance, at a time that suits whoever runs the site.
- The survey covers the unit, its access and how it can be shut down.
- The area is protected and the unit made safe.
- Dirt and debris are removed from each section.
- Coils and trays are cleaned and the condensate drain cleared.
- The unit is closed up and handed back, with a report to follow.
How to prepare
- Find the previous report, if there is one
- Mention any locked doors, roof access or ceiling voids
- Tell us about site rules, permits or sign-in
How to get a quote
Every quote begins with a look at the system, either from photos and details you send or from a site visit. Then we send a fixed price so you know the cost before any work starts.
Related advice
Also in Rowstock
FAQs for Rowstock
Can you do AHU cleaning in Rowstock?
Yes, Rowstock is covered. Get in touch with the details and we’ll arrange a survey.
Can the work in Rowstock be done at night or at weekends?
Yes, we can come after you close and finish before you open. Your customers, staff or residents in Rowstock needn’t be disturbed. Your opening times are the first thing we ask for.
What accreditations do you have?
Our accreditations are CHAS, SafeContractor and ISO 9001, and we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. The Vent Hygiene Elite scheme is run by BESCA and audited independently.
Are you fully insured?
Yes, fully. We also hold CHAS and SafeContractor, for sites that check contractor safety.
What types of premises do you cover?
We work for restaurants, pubs, hotels, schools, colleges, hospitals, care homes, offices and shops, plus food production and leisure sites.
When should our AHU next be cleaned?
Inspection under TR19® Air decides it. Units in heavy use or in sensitive buildings may need attention more often.
Is there a survey before the work?
Yes, every time. We diagnose before we treat: the survey tells us what the system needs and how to reach it and the fixed quote is built on it.
What is TR19?
BESA’s ventilation hygiene specification, with two parts that matter most here: TR19® Grease for kitchen extracts and TR19® Air for supply and extract systems. It is not law, but it’s the benchmark.
Multi-site and managed buildings
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.
Landlords, managing agents and facilities managers book us, not only the businesses that use the systems. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we are happy to quote for all of it.
When to call us in Rowstock
Air handling units are typically tucked away on roofs, in plant rooms or above ceilings, so they’re easy to forget about. It’s easy for a long time to go by without anyone opening the panels.
What we’re most often called out for:
- Dust-coated heating and cooling coils
- Dirty fans and fan housings
- Dirty filters cutting the airflow
- Debris and leaves in the fresh air intake
Wherever a school like Harwell Primary School has ducted ventilation, a half-term visit keeps the work out of lesson time.
Questions to ask before you book
- Whether they’re fully insured
- Proof of accreditation you can verify
- Whether they recommend a next date
- Exactly which parts of the system are covered
Different parts, different methods
Internal casing and panels
Loose or damaged linings inside a unit can break up into the airstream. Anything like that is recorded with pictures.
Heating and cooling coils
A dirty coil holds back the air and makes heating and cooling less effective. A clean gets air moving through the coil properly again.
When something else is needed
In fairness, some problems need a different fix:
- Coils that are corroded or leaking and need replacing
- Ductwork downstream of the unit, which is a separate clean
- Airflow problems caused by the system’s design
If you are not sure, just call us on 0345 646 2711 or use the quote form and we will give you a straight answer.
What the work covers
- Supply and extract fans
- Drain trays
- Heating and cooling coils
- Filter sections
- Internal panels
- Dampers and louvres
Staff cleaning versus specialist work
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’s our job.
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’s where we come in.
What affects the cost of AHU cleaning
Before we fix a price, we need to know a few things. We check:
- One-off work versus a regular cycle
- Parking and loading at the site
- Site requirements such as sign-in and permits
- 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’ll go through it with you.
What we need to know
A few details help us quote accurately. With your enquiry, please include:
- The paperwork from the last visit, if you have it
- When the site is open and when it’s quiet
- Detail shots of panels, filters and grilles
- The postcode and the type of business
Need a price for AHU cleaning? Please phone us on 0345 646 2711, or send details by email and tell us about the site. We will explain what we’d do and send a fixed quote before anything is booked.
Ventilation in Rowstock buildings
There are about 3 hotels and guest houses on the FSA’s food hygiene register in and around Rowstock, up to about a mile and a half out. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. At about 53 miles from central London, Rowstock sits well inside the area we cover. The visit is fixed around your opening hours, not ours. Abingdon Community Hospital is the nearest hospital, about 4.9 miles north of Rowstock. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
Healthcare ventilation, from large hospitals like Abingdon Community Hospital (about 4.9 miles north) to small clinics, depends on clean filters, coils and ducts.
Rowstock is about 3 miles west of Didcot, in Oxfordshire. Whatever kind of site you run in Rowstock, we can take on AHU cleaning. Visits can be booked for evenings, overnight or weekends so trading isn’t interrupted. Rowstock is one of 443 towns, villages and districts in Oxfordshire where we work for AHU cleaning. There’s also a page for Oxford, roughly 11 miles from Rowstock.
Every address in OX11 is covered for AHU cleaning, from the main roads to the quietest streets. You will find streets such as Tudor Walk, Wantage Road and Reading Road, and we cover them all for AHU cleaning. We also cover the places around Rowstock: East Hendred (1 mile west), West Hendred (2 miles west), Ardington (3 miles west), East Lockinge (3 miles west) and West Ilsley (4 miles south). We also work in nearby towns such as Oxford (11 miles north), Didcot (3 miles east), Abingdon-on-Thames (5 miles north), Witney (15 miles north-west), Wantage (5 miles west) and Grove (5 miles west).
Landmarks near Rowstock
In Rowstock, that means kitchens and buildings near Old Chequers pub and UTC Oxfordshire and the streets around them. The nearest railway station is Didcot Parkway station, roughly 3 miles east. A little further out are Atlas Computer Laboratory (1.7 miles south) and Abingdon Community Hospital (4.9 miles north). Open spaces near Rowstock include Mowbray Fields and Churn Hill.