Oxfordshire · Air handling unit cleaning
AHU Cleaning in Marcham
Professional AHU cleaning in and around Marcham, timed so the site keeps working and signed off in writing with photos.
- Stale or musty smells from the ventilation
- Drain trays holding standing water
- Air handling units with blocked filters
Aftercare tips
After the visit, a few habits help the work last:
- Don’t ignore odours coming through the grilles
- Keep the certificate and photo report with the plant records
- Keep the area around the fresh air intake clear
- Make sure the unit’s access doors open easily
If the ductwork hasn’t been cleaned, consider it next. A clean unit feeding dirty ducts only solves half the problem, and we can survey both.
Regular inspection under TR19® Air shows when cleaning is due instead of leaving it to guesswork.
How we handle AHU cleaning in Marcham
Heating and cooling coils trap dust that gets past the filters. Dirt on the fins holds back air and makes the unit work harder to do the same job. We clean coils with methods suited to their condition, taking care not to damage the fins. The work covers drain trays, internal panels and supply and extract fans, and common reasons people get in touch are dust-coated heating and cooling coils and plant that has been serviced but not cleaned.
Smaller buildings around Marcham often keep their ventilation units in a roof void or plant cupboard, where they’re easy to forget. Filters, coils and drain trays need attention whatever the size of the unit.
Accreditations are easy to claim and worth checking. Ours are BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001, and we’re fully insured.
- Where
- Marcham (OX13)
- Region
- Oxfordshire
- Reporting
- Report and pictures after the visit
- Quote
- Fixed quote, typically within a working day
- Hours
- Out of hours as standard, 24/7 emergency line
- Telephone
- 0345 646 2711
- Page updated
- 30 October 2026
Staff cleaning versus specialist work
Some jobs should never be done in-house: entering ducts, working on fans, testing dampers and taking grease readings call for the right kit, training and safe access. That is our job.
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’ll take a look and give you a fixed quote.
What we do, step by step
Before we leave, we walk the area with whoever is on site. Anything we couldn’t reach or that needs attention is pointed out there and then, and it goes on the report too. The visit takes one overnight shift for many single units, with bigger plant phased. In a place like Marcham, we fit the visit around your hours.
- We agree a shutdown window that suits the building.
- Before cleaning, each section is photographed.
- We work through the unit from the intake to the outlet.
- The fan and drain tray are cleaned and the drain checked.
- After pictures are taken and the certificate issued.
Preparing for the visit
- Agree a time when the area can be out of use
- Tell us about site rules, permits or sign-in
- Arrange a key holder or contact on site
How to get a quote
For AHU cleaning in Marcham, call us on 0345 646 2711, or email photos. Tell us what kind of premises it is and when it’s open, plus photos or the previous report if they’re to hand. We typically send a fixed quote within one working day.
Related advice
AHU cleaning around Marcham
About 1.7 miles east of Marcham is Abingdon Community Hospital, the nearest hospital. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too. About 55 miles out from central London, Marcham is part of the South East area we work across. Evening, overnight and weekend visits are all possible.
Wherever a school like Abingdon Preparatory School has ducted ventilation, a half-term visit keeps the work out of lesson time.
Marcham is about 3 miles west of Abingdon-on-Thames, in Oxfordshire. Across the OX13 area, we can take on AHU cleaning. Marcham is one of 443 towns, villages and districts in Oxfordshire we cover for AHU cleaning. There’s also a page for Oxford, about 7 miles away.
Work in OX13 follows the same survey, fixed quote and written report as everywhere else we cover. That includes premises on Haines Court, Orchard Way and Elwes Road and nearby roads. Neighbouring places we cover for AHU cleaning include Frilford (1 mile west), Frilford Heath (1 mile north-west), Cothill (2 miles north), Tubney (2 miles north-west) and Shippon (2 miles north-east). Further out, we also cover Oxford (7 miles north-east), Didcot (6 miles south-east), Abingdon-on-Thames (3 miles east), Witney (10 miles north-west), Carterton (13 miles north-west) and Wantage (6 miles south-west).
Landmarks near Marcham
Typical jobs here are in premises near Larkmead School and The Crown Public House, among other places. For rail, the closest station is Radley station, roughly 4.4 miles east of the centre. Nearby you will also find Abingdon Community Hospital (1.7 miles east) and FitzHarris Castle (2.5 miles east). Open spaces near Marcham include Hitchcopse Pit and Cumnor Hill.
Towns and villages near Marcham
More services for Marcham
Part by part
Filters
Clogged filters reduce airflow, and dirt can get round the edges. The filter section is cleaned so new or cleaned filters sit properly.
Rooftop and plant room units
Smaller units in ceiling voids are part of the work as well. The space underneath is protected with sheeting first.
What we are called out for in Marcham
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 some travels further into the unit.
The symptoms we’re asked about most include:
- Dirty filters cutting the airflow
- Units that have only ever had filter changes
- Leaves and litter drawn into the unit
- Blocked condensate drains and slimy trays
If you run a surgery, dental practice or care home near Marcham, clean ventilation matters as much to you as to a hospital like Abingdon Community Hospital (about 1.7 miles east).
Comparing quotes
- What paperwork you get at the end
- If the quote is a fixed price or an estimate
- How areas they can’t reach will be recorded
- When the next visit should be, and why
Multi-site and managed buildings
For anyone managing more than one site, we can schedule visits across all of them on one quote. Every building has its own written report, so records stay tidy.
Running several sites is easier with one contractor. We work across London and the South East, so a run of sites can go into one programme and kept to a regular schedule.
What AHU cleaning cannot fix
A few issues sit outside what this work can do:
- Problems with the unit’s controls or sensors
- Leaking heating or cooling coils
- Faulty motors, drives or bearings
Not sure which it is? You can call 0345 646 2711 or send us an email and we’ll tell you honestly before booking.
What we work on in Marcham
- Drain trays
- Dampers and louvres
- Supply and extract fans
- Internal panels
- Heating and cooling coils
- Filter sections
Your questions about AHU cleaning in Marcham
Do you cover smaller places like Marcham?
Yes. Marcham is within the area we cover across London and the South East. The journey is planned ahead, so a few details about the route help.
Can you do AHU cleaning in Marcham?
Yes, Marcham is covered. To start, ring 0345 646 2711 or drop us a line with a few pictures of the system.
Do you give a certificate after the clean?
Yes. You get a TR19® certificate plus before and after pictures. They’re worth keeping with the plant records.
Do you offer emergency callouts?
Yes. Our emergency line runs 24/7 for anything that can’t wait until a planned visit. Ring any time and tell us what’s happened.
Are you fully insured?
Yes. Duct Doctor is fully insured, and the details are available on request.
What happens if you cannot reach some of it?
We never leave them off the paperwork. The report says which parts couldn’t be reached and why, along with a quote to put access in.
Can you set up regular visits?
Yes. We run scheduled maintenance contracts, set at the interval the system needs. The report from each visit recommends the next date.
What do you do to protect the area?
We start with protection: sheeting over floors, worktops and anything close to the work. The area is left tidy, with our waste taken away.