Oxfordshire · Air handling unit cleaning
Longworth AHU cleaning
AHU cleaning across Longworth and nearby, timed so the site keeps working and finished with a written report and pictures.
- Drain trays holding standing water
- Dirty fans and fan housings
- Filters that are clogged or overdue
What a clean won’t put right
Not every problem is solved by AHU cleaning, and we will tell you before work begins. It won’t put right:
- Ductwork downstream of the unit, which is a separate clean
- Airflow problems caused by the system’s design
- Coils that are corroded or leaking and need replacing
If in doubt, call us on 0345 646 2711, or send details by email and we’ll say what we think.
What we work on in Longworth
- Supply and extract fans
- Internal panels
- Heating and cooling coils
- Drain trays
- Dampers and louvres
- Filter sections
How we handle AHU cleaning in Longworth
Our AHU cleaning covers sites in Longworth and the rest of Oxfordshire, 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. If you’re dealing with intake sections clogged with outdoor debris and dirty fans and fan housings, we can help, from drain trays, internal panels and heating and cooling coils onwards.
Somewhere as small as Longworth, ducted ventilation is typically 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.
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
- Longworth (OX13)
- Region
- Oxfordshire
- Reporting
- Report and photos after the visit
- Price
- A fixed price before work begins
- When we work
- When your site is closed, plus a 24/7 line
- Phone
- 0345 646 2711
- Page updated
- 30 October 2026
What AHU cleaning looks like in Longworth
About 59 miles out from central London, Longworth is part of the South East area we work across. The visit is fixed around your opening hours, not ours.
An inspection comes first for any ventilation job around Longworth, so the cleaning matches what’s there.
Longworth is about 7 miles west of Abingdon-on-Thames, in Oxfordshire. If you need AHU cleaning in Longworth, please call 0345 646 2711 or send us an email for a fixed quote. Our area covers London and the South East, including Longworth. Longworth is one of 443 towns, villages and districts in Oxfordshire where we work for commercial clients. There’s also a page for Oxford, about 10 miles away.
Work in OX13 is surveyed, quoted and booked the same way as anywhere else. AHU cleaning is available to premises on High Street, Bowbank and Rectory Lane and nearby roads. Nearby, we also carry out AHU cleaning in Hinton Waldrist (1 mile west), Kingston Bagpuize (1 mile south-east), Pusey (3 miles south-west), Charney Bassett (3 miles south) and Lyford (3 miles south). Further out, we also cover Oxford (10 miles north-east), Didcot (10 miles south-east), Abingdon-on-Thames (7 miles east), Witney (7 miles north), Carterton (8 miles north-west) and Wantage (7 miles south).
Local landmarks in Longworth
In Longworth, that means kitchens and buildings near Waggon And Horses Public House and the streets around them. Well-known places in the area include Hinton Waldrist Castle (0.8 miles west). Green spaces nearby include Hitchcopse Pit.
What the work involves, part by part
Drain trays
Condensate from the coil drips into a tray beneath it. Standing water and slime are removed and the outlet is checked.
Filters
Clogged filters reduce airflow, and dirt can get round the edges. We clean the frames and rails so the filters sit tight.
For landlords and multi-site operators
If you look after several sites, we can schedule visits across all of them on one quote. Each site gets its own report and pictures, so each one has its own record.
We also work for facilities teams across offices, schools and healthcare in Longworth and across Oxfordshire. Larger estates can be phased building by building around the people who use them.
Also near Longworth
Also in Longworth
What we do, step by step
We’re used to working while the site is closed. A lot of visits happen overnight or at weekends, so a kitchen or building can carry on as usual the next day. On site, the work takes a single shift for a typical unit, longer for large or heavily soiled ones. A few pictures of the system help us make the most of a visit to a place like Longworth.
- We look at the unit and the plant area during the survey.
- The area is protected and the unit made safe.
- Each section is cleaned of dust, debris and slime.
- We clean the coils and clear the tray and drain.
- The unit is closed up and handed back, with a report to follow.
Getting ready for the visit
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
- Make sure someone can let us in and lock up afterwards
- Let us know about permits to work or site inductions
Ask for a quote
Quotes are quick. Send a few details and photos, and we typically reply with a fixed quote within one working day. Where a survey is needed, we arrange a time that suits the site.
Read more
Common problems we fix in Longworth
An AHU’s intake draws in outdoor air and everything in it: dust, pollen, leaves and debris. The intake section and first filters take the brunt, and the finer material travels on.
Keep an eye out for any of the following:
- Air handling units never cleaned inside
- Rooms that smell stuffy when the system runs
- Filters that are clogged or overdue
- Dust-coated heating and cooling coils
Classrooms and halls at schools such as Longworth Primary School are easiest to work in when pupils are away.
What to look for in a quote
- How VAT is shown on the quote
- Whether the work can be done while the site is closed
- What happens if part of the system can’t be accessed
- What’s included in the scope, part by part
Staff cleaning versus specialist work
Staff cleaning does not replace a specialist visit; it supports it. Regular in-house cleaning slows the build-up, but hidden parts of the system still need specialist attention.
If your staff spot something between visits, like drips, unusual noise, smells or damaged filters, it’s best reported rather than tackled in-house. We can diagnose it and quote.
Common questions in Longworth
Is Longworth within the area you cover?
Yes, we work in villages as well as towns, and Longworth is covered. Just mention lanes, gates or anything else about the site when you book.
Can you come to Longworth after we close?
Yes, out-of-hours work is a big part of what we do. The site is handed back ready to open. Tell us your opening hours when you ask for a quote.
Do you have insurance?
Yes. Duct Doctor is fully insured, and we can share the details when you need them.
Are you accredited?
We hold 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.
When should our AHU next be cleaned?
That’s set by inspection, in line with TR19® Air. Units in heavy use or in sensitive buildings may need attention more often.
Does the AHU have to be shut down for cleaning?
Yes. The fan must be stopped and the unit isolated, and we time the work to suit the site.
Can you come out in an emergency?
Yes, any time. For anything urgent, such as a fan failure or damage after a fire, ring the 24/7 line and we’ll talk you through the next steps.
Where does the waste go?
It leaves the site with us at the end of the visit. While we work, it’s kept contained so the area stays clean.
Between visits
Here’s the after-treatment advice, short and simple:
- Do not ignore odours coming through the grilles
- Keep the area around the fresh air intake clear
- Keep inspection doors on the unit in good order
- Book the next check in line with the report
The ducts served by the unit may need attention too. Cleaning the unit and ducts together gives the best result, and we can quote for both.
Do not let leaves, litter or stored materials build up near the fresh air intake. What’s near the intake ends up in the unit.