Hampshire · Air handling unit cleaning
Air handling unit cleaning in Shirrell Heath, Hampshire
AHU cleaning for Shirrell Heath and the surrounding area: diagnosis first, then a fixed quote, the work and a report with photos. Ask us for a fixed quote.
- Leaves and litter drawn into the unit
- Air handling units never cleaned inside
- Air handling units due a clean after building work
AHU cleaning in Shirrell Heath, done properly
Our AHU cleans for sites in Shirrell Heath cover the parts that collect dirt: filters, coils, drain trays, fans and the internal panels. Every clean comes with a TR19® certificate and before and after pictures in a report. Typical jobs include dust-coated heating and cooling coils and dirty fans and fan housings, across drain trays, supply and extract fans and filter sections.
Rural buildings with mechanical ventilation, such as care homes and country hotels, often keep their units in roof spaces or outbuildings, which makes them easy to overlook.
Duct Doctor has been trading since 2009, as a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
- Where
- Shirrell Heath (SO32)
- Region
- Hampshire
- Reporting
- Photo report after every visit
- Price
- A fixed price before we start
- Working hours
- Out of hours as standard, 24/7 emergency line
- Call
- 0345 646 2711
- Checked
- 30 October 2026
What happens on the day
We’re used to working while the site is closed. Evenings, nights and weekends are when much of our work happens, so a kitchen or building can carry on as usual the next day. The visit itself takes anything from half a day for one small unit to several shifts for a plant room full of them. Pictures of the system and its access let us plan the work in Shirrell Heath before we set off.
- The survey covers the unit, its access and how it can be shut down.
- The area is protected and the unit made safe.
- Dirt and debris are removed from each section.
- Coils and trays are cleaned and the condensate drain cleared.
- The unit is closed up and handed back, with a report to follow.
Before we arrive
- Let us know how we reach the system, including roofs, risers and plant rooms
- Have your last certificate or report to hand
- Tell us about site rules, permits or sign-in
Get a fixed quote
Photos are enough for some jobs, while others need a look on site. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, the quote is fixed before any work is booked.
Related advice
What AHU cleaning looks like in Shirrell Heath
The FSA’s food hygiene register lists about 3 schools, colleges and universities and about 3 caring premises (care homes, nurseries and hospitals) with registered kitchens or food service within about 1.5 miles of central Shirrell Heath. Classrooms, bedrooms and care spaces are often served by ducted air, and that ductwork collects dust over time. For Shirrell Heath, the closest hospital is Knowle Hospital, roughly 2.9 miles south. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes.
Healthcare ventilation, from large hospitals like Knowle Hospital (about 2.9 miles south) to small clinics, depends on clean filters, coils and ducts.
Shirrell Heath is about 5 miles north of Fareham, in Hampshire. Across the SO32 area, we cover AHU cleaning for commercial sites. Our Hampshire coverage runs to 683 places, Shirrell Heath among them. You can also see our page for Southampton, about 9 miles away.
We work across SO32 for AHU cleaning and the streets around it. That includes premises on High Street, Smiths Lane and Black Horse Lane and the roads around them. We also cover Shedfield (1 mile south-west), Kingsmead (1 mile east), Mislingford (1 mile east), Swanmore (1 mile north) and Wickham (2 miles south). Within a short drive, we also cover Winchester (11 miles north-west), Gosport (8 miles south), Havant (10 miles south-east), Eastleigh (7 miles north-west), Fareham (5 miles south) and Horndean (8 miles east).
Local landmarks in Shirrell Heath
Locally, jobs take us to businesses close to Prince of Wales pub and Swanmore College of Technology, among other places. The nearest railway station is Botley station, roughly 2.9 miles west. Well-known places in the area include Knowle Hospital (2.9 miles south) and Bishop's Waltham Museum (2.4 miles north-west). Not far away are Bishops Waltham Branch LNR.
Shirrell Heath: your questions answered
Can you clean school ventilation in Shirrell Heath during the holidays?
Yes, out-of-term visits are normal for schools. With about 3 schools and colleges on the FSA’s register within roughly a mile and a half of Shirrell Heath, it pays to plan holiday dates ahead. Just phone us on 0345 646 2711 or email us with your term dates and we will plan around them.
Do you work in villages like Shirrell Heath?
Yes, Shirrell Heath is part of our area, however small the site. Photos of the system and directions to the site help us plan the visit.
Do you work evenings or weekends?
Yes. Evening, overnight and weekend work is all possible, so the building keeps running in the day.
Which parts of an air handling unit do you clean?
All the internal parts the air touches, from intake to discharge, including coils, fan and drain trays. The photo report shows each section before and after.
Can you clean the ducts connected to the AHU?
Yes. We clean supply and extract ductwork to TR19® Air as well. Cleaning the unit and ducts together often makes sense, and we can quote for both.
What happens if you can’t reach some of it?
They’re listed in the report, never skipped quietly. The report says which parts couldn’t be reached and why, and we can quote to improve the access.
How do you keep the site clean during the work?
By covering it before any work starts. The work is kept contained and leave the area clean.
How long does it take to clean an air handling unit?
Expect it to take one overnight shift for many single units, with bigger plant phased. The unit’s size and condition make the biggest difference, and we will confirm the time when we quote.
Why deal with it now?
Dirt left in an air handling unit does not stay in the unit. It moves on into the ductwork and out into the rooms, which is why the unit and the ducts are best cleaned together. With notice, the visit to Shirrell Heath can be fitted around your bookings and events.
A single site or a whole portfolio, the quote is built the same way: the work involved, the access and the timing. You will have a fixed price before any work starts.
Why choose Duct Doctor in Shirrell Heath
- Fixed quotes, usually within one working day
- Evenings, overnight and weekends, plus 24/7 emergency callout
- We’re fully insured
- CHAS, SafeContractor and ISO 9001
Read what affects the cost or our accreditations and certificates.
What affects the cost of AHU cleaning
We quote each job individually. This is what makes a difference:
- Whether we need access equipment or extra panels
- Any permits to work or inductions
- The size of the system
- Travel, parking and unloading
Several systems or sites on one quote often makes better use of the time. Tell us about everything you’d like looked at, and you will get one fixed quote.
Asking for a quote
What to send for a quote:
- Your last certificate, test record or report
- How we’d reach plant on a roof or in a plant room
- Close-ups of filters, grilles, hatches or access panels
- Problems your staff have spotted
Want a quote for AHU cleaning? Please phone us on 0345 646 2711 or drop us a line and tell us about the site. We will talk you through the work and give you a fixed quote before anything is booked.
What a clean won’t put right
In fairness, some problems need a different fix:
- Coils that are corroded or leaking and need replacing
- Building management system faults
- Ductwork downstream of the unit, which is a separate clean
If in doubt, ring 0345 646 2711, or email photos and we’ll say what we think.
Where we work
- Dampers and louvres
- Heating and cooling coils
- Drain trays
- Supply and extract fans
- Filter sections
- Internal panels
Multi-site and managed buildings
From a single site to a large estate, the standard is the same: the system surveyed, the price fixed, the visit fitted around trading and everything written up afterwards.
When the building owner and the occupier are different, it’s worth checking the lease for who maintains the systems. We can quote either party, and the report can go to both.
How the job changes from site to site
Fans and fan sections
Before the fan is touched, the unit is shut down and made safe in agreement with the site.
Internal casing and panels
Dust settles on every internal surface of the unit. Each section is cleaned from the intake through to the outlet.
Places near Shirrell Heath
What else we do in Shirrell Heath
What we are called out for in Shirrell Heath
Filters that are not changed or cleaned on time clog up, cutting airflow and sometimes letting dirty air bypass them altogether. Then the rest of the unit takes the load.
If you notice any of these, it’s worth a diagnosis:
- Units that have only ever had filter changes
- Dust built up on fan impellers
- Stale or musty smells from the ventilation
- Condensate trays that won’t empty
Classrooms and halls at schools such as St John the Baptist Church of England Primary School are easiest to work in when pupils are away.
What to look for in a quote
- Whether the whole system is included, or only the parts that are easy to reach
- Whether the price is fixed
- Which accreditations they hold, and whether you can check them
- Whether the quote shows VAT