Hampshire · Air handling unit cleaning
AHU Cleaning in Passfield
AHU cleaning in Passfield from ventilation hygiene specialists trading since 2009. Out-of-hours visits and 24/7 emergency callout.
- Units needing a clean before a new tenant or handover
- Dust built up on fan impellers
- Stale or musty smells from the ventilation
When it’s something else
AHU cleaning cannot fix everything, and we’d rather say so up front. It does not solve:
- Leaking heating or cooling coils
- The supply and extract ducts, quoted separately
- Breakdowns that need a mechanical engineer
Not sure which it is? You can ring 0345 646 2711, or email photos and we’ll tell you honestly before you book.
Parts of the system we cover
- Internal panels
- Heating and cooling coils
- Drain trays
- Supply and extract fans
- Dampers and louvres
- Filter sections
AHU cleaning in Passfield, done properly
An AHU clean is a thorough examination and treatment of the unit. Every section is opened, cleaned and photographed, so the report shows exactly what was done. Typical jobs include rooms that smell stuffy when the system runs and dirty filters cutting the airflow, on drain trays, internal panels and supply and extract fans.
Somewhere as small as Passfield, ducted ventilation is usually limited to a school, a care home, a surgery or a converted business building, wherever there is one, but where it’s fitted, it needs the same inspection and cleaning as anywhere.
We are CHAS and SafeContractor accredited, we hold ISO 9001 and we are fully insured. On top of that, we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, trading since 2009.
- Place
- Passfield (GU30)
- Region
- Hampshire
- Reporting
- Report and pictures after the visit
- Quote
- A fixed price before we start
- Working hours
- Evenings, overnight and weekends; 24/7 emergencies
- Telephone
- 0345 646 2711
- Page updated
- 30 October 2026
Why deal with it now?
Facilities teams are often asked for evidence that the ventilation is looked after. Our certificate and photo report give you clear evidence, for audits, tenants or your own peace of mind. Somewhere as small as Passfield, losing a kitchen or building to a fault is felt by everyone who uses it.
No two sites are the same, so we price each one individually. Size, access, the condition of the system and when we can work all make a difference.
Why us?
- Full insurance on every job
- A single point of contact for sites across the South East and London
- In business since 2009
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
Landlords, agents and facilities managers
From a single site to a large estate, the standard is the same: a survey first, a fixed quote, the work timed around the site and a report with photos.
Where a tenant occupies the premises but the landlord owns the building, the lease normally sets out who maintains what. We can quote either party, and the report can go to both.
AHU cleaning in Passfield: local notes
Chase Community Hospital is the nearest hospital, about 1.5 miles north-west of Passfield. Clean air matters most where people are unwell, and that is as true in a care home as in a hospital. We cover Passfield, about 42 miles from central London, as part of our work across London and the South East. Evening, overnight and weekend visits are all possible.
School buildings such as Mill Chase Academy are usually done in the holidays, so classrooms are not disturbed. Healthcare buildings such as Chase Community Hospital, about 1.5 miles north-west, depend on their ventilation; if you manage a surgery, clinic or care home near Passfield, yours matters too.
Passfield is about 7 miles south-east of Alton, in Hampshire. For AHU cleaning in and around Passfield, it’s easy to get a fixed quote: please ring 0345 646 2711, or email photos. Our area covers London and the South East, including Passfield. Passfield is one of 683 places in Hampshire where we work for AHU cleaning. There’s also a page for Guildford, roughly 15 miles from Passfield.
Every address in GU30 is within our area for AHU cleaning, from the main roads to the quietest streets. You will find streets such as The Lyndons, Eleanor Close and Lynchborough Road, and we cover them all for AHU cleaning. If your site is just outside Passfield, we cover Conford (1 mile south-east), Weavers Down (1 mile south), Liphook (2 miles south-east), Woolmer (2 miles south-west) and Longmoor (2 miles south-west). We also work in nearby towns such as Farnborough (14 miles north), Fleet (12 miles north), Horndean (15 miles south-west), Aldershot (11 miles north), Alton (7 miles north-west) and Petersfield (8 miles south-west).
Around Passfield
The nearest railway station is Liphook station, roughly 2.3 miles south-east. A little further out are Chase Community Hospital (1.5 miles north-west). The countryside around Passfield includes Deadwater Valley and Wheeler's Down.
How it works
The first job on site is protection: floors, worktops and anything near the work are covered. After that, the system is made safe and the work begins. It takes from a few hours for a compact unit to a day or more for a large one, and we clear up before we go. We agree a date with you, plan the drive to Passfield and turn up when the site is quiet.
- 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.
How to prepare
- Tell us about site rules, permits or sign-in
- Have your last certificate or report to hand
- Tell us the best time to work, such as after service or at a weekend
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
How the job changes from site to site
Fans and fan sections
The fan moves all of the unit’s air, so dirt on it gets spread around. The impeller, its housing and the fan chamber are cleaned.
Rooftop and plant room units
Many AHUs sit on roofs or in plant rooms with limited access. Access is planned during the survey, before we quote.
What staff can safely do
If your staff spot something between visits, such as dripping grease, a noisy fan, a smell or a filter that won’t come clean, they should report it rather than try to fix it. We can diagnose it and quote.
Staff cleaning and specialist work are not the same thing. A daily filter wipe and a weekly filter wash keep grease down at the front of the system, but they do not reach the grease that builds up further in. Reaching it takes a specialist with the right equipment.
Your questions about AHU cleaning in Passfield
Can you get to a site in Passfield?
Yes. Passfield is within the area we cover across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you clean school ventilation in Passfield in the holidays?
Yes. Half-terms and the summer break are the natural time for school work. With about 2 schools and colleges on the FSA’s register within roughly a mile and a half of Passfield, it pays to plan holiday dates ahead. Booking early in the term gives the best choice of holiday dates.
Which accreditations do you hold?
Duct Doctor is 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 about areas you cannot get to?
We never leave them off the paperwork. You will know exactly which parts weren’t reached and why, along with a quote to put access in.
Can you look after several sites?
Yes. We work across South East England and London, so we can schedule a run of sites on one programme. Each site gets its own report and photos.
Do you repair air handling units?
AHU cleaning is what we offer here, not mechanical repairs. Any faults we notice are recorded so your maintenance contractor can deal with it.
Which sectors do you work in?
All kinds of commercial and public premises: from restaurants, pubs and hotels to schools, hospitals, care homes, offices, shops and food production sites. Work is timed around how each site runs.
Which parts of an air handling unit do you clean?
We clean the filter section, heating and cooling coils, drain trays, fan and internal casing. Filters are cleaned or changed as agreed in the quote.
Also in Passfield
What affects the cost of AHU cleaning
Sites vary more than people expect. What affects the quote:
- The times the site is available
- The size of the system
- Parking and loading at the site
- The condition we find in the survey
Whatever the type of site, the quote works the same way: the size of the job, access, condition and working hours. Ask for a fixed quote and we’ll explain each part.
Asking for a quote
A few details help us quote accurately. With your enquiry, please include:
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- When the site is open and when it’s quiet
- Photos showing the whole system and its surroundings
- Your last certificate, test record or report
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 phone us on 0345 646 2711 or drop us a line.