Southampton · Air handling unit cleaning
Air handling unit cleaning in Harefield, Southampton
Air handling unit cleaning in Harefield, surveyed first and signed off with a written report and pictures. Call for a fixed quote.
- Units needing a clean before a new tenant or handover
- Filters that are clogged or overdue
- Units that have only ever had filter changes
Harefield questions
Will you come out to Harefield?
Yes, smaller places are covered as well as towns. The journey is planned ahead, so a few details about the route help.
Can you clean school ventilation in Harefield during the holidays?
Yes. The holidays are the usual time for school work. Food Standards Agency records list about 27 schools, colleges and universities with registered kitchens within about a mile and a half of Harefield. Tell us your holiday dates and we’ll book the visit for when the site is empty.
When should our AHU next be cleaned?
There’s no single answer; it comes down to the building and the unit. Inspection tells you when cleaning is needed, and the report recommends a next date.
Can you fix a faulty AHU?
The clean includes noting faults, but repairs sit with your maintenance contractor, with pictures where it helps.
Does the AHU have to be shut down for cleaning?
Yes. Cleaning needs the unit off and isolated, and we time the work to suit the site.
Can you quote from photos?
In many cases, yes. With good photos, the site type and your last report, we can price many jobs. Where we cannot see enough, we arrange a survey.
Can you clean the ducts connected to the AHU?
Yes. We clean supply and extract ductwork to TR19® Air as well. It’s often worth doing both at once, and we can quote for both.
How much does AHU cleaning cost?
There’s no set price, as it depends on the job: the size of the system, its condition, access and when we can work. We fix the price before work begins.
AHU cleaning in Harefield
An AHU clean is a thorough examination and treatment of the unit. We look inside each section, clean what we find and record it with pictures, so you can see the unit’s condition for yourself. Common call-outs are for odours coming through the supply air and dirty coils holding back the airflow, across supply and extract fans, dampers and louvres and filter sections.
For a building near Harefield, the visit is planned around how it’s used, and the journey is planned ahead. The method does not change: inspect first, clean, then record what was done.
The sign-off is always in writing: a written report, dated and illustrated with pictures, and for TR19® Grease cleans, a certificate issued through the BESCA VHE portal. Any parts we couldn’t reach are recorded on it too.
- Where
- Harefield (SO18, SO19, SO30)
- Region
- Southampton
- Paperwork
- Written report with photos
- Quote
- Fixed quote, usually within a working day
- Hours
- Out of hours as standard, 24/7 emergency line
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
Do you need AHU cleaning in Harefield?
Filters catch most of the dust, but not all of it. What gets through settles on coils, fans and the inside of the casing, building up layer by layer.
If you notice any of these, it’s worth a diagnosis:
- Filters that are clogged or overdue
- Rooms that smell stuffy when the system runs
- Debris and leaves in the fresh air intake
- Plant that needs cleaning after a refit
Healthcare buildings such as Moorgreen Hospital, about 1.1 miles north-east, depend on their ventilation; if you manage a surgery, clinic or care home near Harefield, yours matters too.
What to look for in a quote
- Exactly which parts of the system are covered
- Proof of insurance
- If the quote is a fixed price or an estimate
- Whether inaccessible sections are listed on the report
Towns and villages near Harefield
Other services in Harefield
How we price AHU cleaning
The diagnosis comes before the price. We look at:
- The times the site is available
- Whether we need access equipment or extra panels
- How many systems or sites are involved
- How big the system is
The price reflects the work, not guesswork. That’s why we survey first, from photos or on site, and why the quote is fixed before work begins.
What to send for a quote
A few details help us quote accurately. When you get in touch, it helps to send:
- Your last certificate, test record or report
- The site address and the type of premises
- Photos showing the whole system and its surroundings
- How we’d reach plant on a roof or in a plant room
Every quote begins with a look at the system, from your pictures and details or, where that is not enough, a survey on site. Then we send a fixed price so you know the cost before any work starts.
Aftercare tips
Results last longer with the right care. We suggest:
- Note any water around the unit or leaks below it
- Make sure condensate is draining away
- Plan the next inspection before the last report gets filed away
- Keep the area around the fresh air intake clear
The ducts served by the unit may need attention too. A clean unit feeding dirty ducts only solves half the problem, and we can survey 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.
Different parts, different methods
Heating and cooling coils
Cooling coils stay damp in use, so dirt on them can turn sticky. The coil and its drain tray are cleaned as one job.
Drain trays
The drain tray collects water from the cooling coil. We clear standing water, clean out slime and check the outlet is draining.
When it’s something else
It’s worth knowing the limits before booking:
- Mechanical faults with motors, belts or bearings
- A system that is undersized for the building
- Problems with the unit’s controls or sensors
Not sure which it is? You can call us on 0345 646 2711 or email us and we’ll tell you honestly before you book.
Where we work
- Dampers and louvres
- Internal panels
- Drain trays
- Filter sections
- Heating and cooling coils
- Supply and extract fans
AHU cleaning in Harefield: local notes
Food Standards Agency data includes about 27 schools, colleges and universities and about 30 hospitals, care homes and childcare premises within 1.5 miles or so of the middle of Harefield. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. For Harefield, the closest hospital is Moorgreen Hospital, roughly 1.1 miles north-east. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
School buildings such as Harefield Primary School are normally done in the holidays, so classrooms are not disturbed.
Harefield is about 2 miles east of Southampton, in Southampton. Whatever kind of site you run in Harefield, we can take on AHU cleaning. Visits can be booked for evenings, overnight or weekends so the site keeps running. 40 places in Southampton are on our list, from busy centres to quieter spots.
Work in SO18, SO19 and SO30 follows the same survey, fixed quote and written report as everywhere else we cover. If you need AHU cleaning at premises on Dean Road, Marne Road and Keats Road or anywhere close by, our technicians can take on the work. Being close to the A334, Harefield is easy for our technicians to reach for AHU cleaning. Close by, we work in Thornhill (1 mile south), West End (1 mile north), Chartwell Green (1 mile north), Bitterne (1 mile south-west) and Townhill Park (1 mile north-west). We also work in nearby towns such as Shirley (4 miles west), Regents Park (4 miles west), Maybush (5 miles west), Coxford (4 miles west), Freemantle (4 miles west) and Lordswood (4 miles north-west). Harefield is among the bigger places we cover in Southampton for AHU cleaning.
Landmarks near Harefield
In Harefield, that means kitchens and buildings near The Gregg School, Woodlands Community College and The Red Lion pub, among other places. Harefield’s nearest station is Bitterne station, about 1.5 miles west of the centre. Well-known places in the area include Moorgreen Hospital (1.1 miles north-east) and Netley Castle (3 miles south). The countryside around Harefield includes Netley Common.
How it works
Each visit runs to the same pattern: sheeting and protection first, make the system safe, carry out the AHU cleaning, clear away and leave you the report. On site, the work takes half a day to a full day per unit, with large plant planned over several shifts. Because the survey comes first, a visit to Harefield can typically be finished without a second trip.
- We start with a survey of the unit and a fixed quote for the work.
- With your site team, the unit is switched off and isolated, then the area around it protected.
- Filters are dealt with as agreed, and the coils, fan and casing cleaned.
- Drain trays are cleared and cleaned and the outlet checked.
- A TR19® certificate and photo report follow the clean.
Before we arrive
- Tell us the best time to work, such as after service or at a weekend
- Let us know how we reach the system, including roofs, risers and plant rooms
- Mention any sign-in, permit or induction we need
How to get a quote
We don’t publish a price list, because every site is different. Instead, we look at your site first, from pictures or a survey, then send a fixed quote. To get going, call us on 0345 646 2711, or email photos.
Related advice
In-house cleaning or a specialist?
In-house cleaning and specialist cleaning do different jobs. A daily filter wipe and a weekly filter wash keep grease down at the front of the system, but grease that has passed the filters is out of reach. That part needs specialist access and equipment.
Logging matters as much as cleaning. A dated log of in-house cleaning and checks helps show that the system is managed between specialist visits, next to our reports.