Slough · Air handling unit cleaning
AHU Cleaning in Farnham Common
AHU cleaning in Farnham Common from ventilation hygiene specialists trading since 2009. Evenings, overnight and weekends, plus a 24/7 emergency line.
- Filters that are clogged or overdue
- Units that have only ever had filter changes
- Plant that needs cleaning after a refit
Common problems we fix in Farnham Common
Whatever surrounds a building in Farnham Common, the air drawn into its AHU carries dust, pollen and debris. Most of it lands at the intake and the first stage of filters, and some travels further into the unit.
Clients usually contact us after spotting one of these:
- Plant that has been serviced but not cleaned
- Air handling units due a clean after building work
- Dust built up on fan impellers
- Dust-coated heating and cooling coils
If you run a surgery, dental practice or care home near Farnham Common, clean ventilation matters as much to you as to a hospital like Wexham Park Hospital (about 2.4 miles south-east).
Comparing quotes
- What happens if part of the system can’t be accessed
- How VAT is shown on the quote
- What’s included in the scope, part by part
- Which accreditations they hold, and whether you can check them
AHU cleaning in Farnham Common
Coils are where a lot of the dirt ends up. 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. If you have stale or musty smells from the ventilation and dust built up on fan impellers, we can help.
Work in a small place like Farnham Common starts with agreeing access and timings.
It’s worth checking any contractor’s accreditations. Ours are BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001, with full insurance on top.
- Place
- Farnham Common (SL2)
- Wider area
- Slough
- Paperwork
- Photo report after every visit
- Price
- A fixed price before work begins
- Working hours
- After hours by arrangement; emergencies any time
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026

Why deal with it now?
A clogged coil or dirty fan makes the unit work harder for the same airflow. That means more wear on the motor and rooms that feel less fresh, and a planned clean is far less disruptive than a breakdown. Out of sight is the usual reason a rural system goes too long without attention.
What you pay reflects the actual work. That’s why we survey first, from photos or on site, and why the quote is fixed before we start.
Why us?
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Fixed quotes, typically within one working day
- CHAS, SafeContractor and ISO 9001
- Full insurance on every job
Read what affects the cost or our accreditations and certificates.
How we price AHU cleaning
Before we fix a price, we need to know a few things. We check:
- Whether we need access equipment or extra panels
- A single visit or a regular plan
- The size of the system
- The times the site is available
No two sites are the same, so we price each one individually. The size of the job, how we reach it, its condition and the working hours all make a difference.
What to send for a quote
When you call or email, it’s useful to have:
- A few general shots of the system
- The paperwork from the last visit, if you have it
- The times we could work without disrupting the site
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
To help us quote: where the site is, what it is and its opening hours, a few photos and the last certificate or report, if there is one. Then give us a ring on 0345 646 2711 or email us.
Also near Farnham Common
Also in Farnham Common
AHU cleaning in Farnham Common: local notes
Going by the FSA’s register, there are about 7 schools, colleges and universities and about 11 care, childcare and hospital premises serving food within roughly a mile and a half of the centre of Farnham Common. Classrooms, bedrooms and care spaces are often served by ducted air, and that ductwork collects dust over time. We cover Farnham Common, about 23 miles from central London, as part of our work across London and the South East. Visits are booked around your hours, evenings and weekends included. Wexham Park Hospital is the nearest hospital, about 2.4 miles south-east of Farnham Common. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes.
School buildings such as Farnham Common Junior School are typically done in the holidays, so classrooms aren’t disturbed.
Farnham Common is about 3 miles north of Slough, in Slough. We carry out AHU cleaning for businesses, landlords and public buildings in Farnham Common and the rest of Slough. Our area takes in 31 places across Slough, large and small. You can also see our page for Reading, about 17 miles away.
Work in SL2 is surveyed, quoted and booked the same way as anywhere else. If you need AHU cleaning at premises on Temple Way, Common Wood and Badgers Wood or anywhere close by, we can help. Other places close to Farnham Common include Egypt (1 mile north-west), East Burnham (1 mile south-west), Hedgerley (1 mile north-east), Farnham Royal (1 mile south) and Littleworth Corner (2 miles west). Larger places within reach include Slough (3 miles south), Cippenham (3 miles south), Chalvey (4 miles south), Langley (4 miles south-east), Upton (4 miles south) and Burnham (3 miles south-west).
Near you in Farnham Common
In Farnham Common, that means kitchens and buildings near The Royal Oak pub, Cocksherd Wood and Caldicott School, among other places. The closest station to Farnham Common is Burnham station, roughly 2.9 miles south-west. Well-known places in the area include Wexham Park Hospital (2.4 miles south-east). For a walk, there’s Burnham Beeches and Taplow Lake.
FAQs for Farnham Common
Can you come to Farnham Common after we close?
Yes, out-of-hours work is a big part of what we do. The work in Farnham Common can fit around your hours. Your opening times are the first thing we ask for.
Can a school’s ventilation in Farnham Common be done out of term time?
Yes. The holidays are the usual time for school work. The FSA’s register shows about 7 schools and colleges with food registrations within roughly a mile and a half of Farnham Common. Booking early in the term gives the best choice of holiday dates.
How far ahead should we book?
The more notice, the better, especially for out-of-hours work. Quotes usually come back within one working day, and emergencies are covered by our 24/7 line.
Can you set up regular visits?
Yes. Plans on a 3, 6 or 12-monthly cycle are available, depending on what the system needs.
How often should an air handling unit be cleaned?
Inspection under TR19® Air decides it. Units in heavy use or in sensitive buildings may need attention more often.
Do you cover Farnham Common?
Yes. Our technicians work in Farnham Common, as part of our area across London and the South East.
Are you fully insured?
Yes. We’re fully insured, and the details are available on request.
How long will the unit be out of action?
The work takes anything from half a day for one small unit to several shifts for a plant room full of them. Bigger units can be phased, so call 0345 646 2711 or send us an email to talk it through.
Landlords, agents and facilities managers
Multi-site operators often want one contractor and one number. We work across London and the South East, so a run of sites can go into one programme and kept on a regular cycle.
Keeping records across a portfolio is half the battle. Each visit produces a dated report with photos, ready to show insurers, fire officers or EHOs.
How it works
We’re used to working while the site is closed. A lot of visits happen overnight or at weekends, so the site can open as normal afterwards. On site, the work takes a single shift for a typical unit, longer for large or heavily soiled ones. Somewhere as small as Farnham Common, the date and timings are agreed with you well before the day.
- The survey covers the unit, its access and how it can be shut down.
- We sheet the area and the unit is isolated.
- Each section is cleaned of dust, debris and slime.
- Coils and trays are cleaned and the condensate drain cleared.
- We close every panel, hand the unit back and send the report and certificate.
Before we arrive
- Let us know about parking and loading
- Make sure someone can let us in and lock up afterwards
- Dig out any earlier paperwork for the system
Get a fixed quote
Photos are enough for some jobs, while others need a look on site. Big or complicated sites, and systems that are hard to see in photos, get a survey first. Either way, the quote is fixed before any work is booked.
Related advice
In-house cleaning or a specialist?
Keep a record of what your team does. A dated log of in-house cleaning and checks helps show that the system is managed between specialist visits, alongside our reports.
Good housekeeping makes our visits easier, not unnecessary. Regular in-house cleaning slows the build-up, but the parts you can’t see still need a specialist at the right interval.
Honest limits
We’ll always give you a straight diagnosis, so here’s what this work can’t put right:
- A system that is undersized for the building
- Faulty motors, drives or bearings
- The supply and extract ducts, quoted separately
If in doubt, give us a ring on 0345 646 2711 or drop us a line and we will say what we think before booking.
What the work covers
- Internal panels
- Drain trays
- Dampers and louvres
- Heating and cooling coils
- Filter sections
- Supply and extract fans