Hampshire · Air handling unit cleaning
Air handling unit cleaning in Cadnam, Hampshire
AHU cleaning across Cadnam and nearby, timed so the site keeps working and signed off in writing with pictures.
- Odours coming through the supply air
- Dirty filters cutting the airflow
- Plant that has been serviced but not cleaned
AHU cleaning in Cadnam
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. If you’re dealing with debris and leaves in the fresh air intake and plant that needs cleaning after a refit, we can help, from heating and cooling coils, drain trays and internal panels onwards.
Somewhere as small as Cadnam, 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.
The report is your system’s health record: dated, with photos, and showing what was done. For TR19® Grease cleans, the certificate comes through the BESCA Vent Hygiene Elite portal, ready for your insurer.
- Location
- Cadnam (SO40)
- Wider area
- Hampshire
- Reporting
- Written report with photos
- Quote
- A fixed quote up front
- Working hours
- Nights, weekends or holidays to suit you
- Phone
- 0345 646 2711
- Checked
- 30 October 2026
What happens on the day
The visit has three parts: getting the area ready, doing the work and signing it off. Set-up means sheeting and making equipment safe, while signing off means the written report and pictures. Most of the time goes on the work itself, and that takes one overnight shift for many single units, with bigger plant phased. Rural roads and tight entrances are worth telling us about before a visit to Cadnam.
- We look at the unit and the plant area during the survey.
- The area is protected and the unit made safe.
- Dirt and debris are removed from each section.
- We clean the coils and clear the tray and drain.
- We close every panel, hand the unit back and send the report and certificate.
Getting ready for the visit
- Agree a time when the area can be out of use
- Dig out any earlier paperwork for the system
- Make sure someone can let us in and lock up afterwards
Getting a quote
To help us quote: where the site is, what it is and its opening hours, a few photos and any previous report or certificate. Once you have those, give us a ring on 0345 646 2711, or send details by email.
Advice
Places near Cadnam
Also in Cadnam
Leave it or put it right?
Leave an AHU uncleaned and the dirt does not stay put. It’s carried through the ductwork and out of the grilles, so cleaning the ducts without the unit only goes so far. A planned visit to Cadnam is easier to arrange than an emergency callout.
We do not list prices on the website, because the cost depends on the site in front of us. For a fixed quote, phone us on 0345 646 2711 or use the quote form, and we’ll talk you through it.
Why choose Duct Doctor in Cadnam
- Evenings, overnight and weekends, plus 24/7 emergency callout
- Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
- A fixed price before any work starts
- One contact for all your sites in London and the South East
Take a look at what affects the cost and how to check a contractor.
Questions from Cadnam
Do you work overnight in Cadnam?
Yes. We work evenings, overnight and at weekends. It means the site in Cadnam keeps running as normal. Tell us your opening hours when you ask for a quote.
Can a school’s ventilation in Cadnam be done out of term time?
Yes, and it’s the easiest time to do it. There are about 2 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Cadnam. Just call us on 0345 646 2711, or send details by email with your term dates and we will plan around them.
What do you do with what you remove?
Waste is contained during the work and removed when we leave, including grease, debris and dirty water. None of it is left on site.
Can you price the work without visiting?
Often, yes. Photos of the system and the access, plus your opening hours and last report, are often enough. Larger or hidden systems need a survey on site first.
What do you do to protect the area?
By covering it before any work starts. The work is kept contained and leave the area clean.
How often do AHUs need cleaning?
There’s no single answer; it comes down to the building and the unit. Regular inspection shows when it’s due, and the report recommends a next date.
Does the AHU have to be shut down for cleaning?
Yes. The fan must be stopped and the unit isolated, and we time the work to suit the site.
How long will the unit be out of action?
The work takes half a day to a full day per unit, with large plant planned over several shifts. Bigger units can be phased, so give us a ring on 0345 646 2711 or email us to talk it through.
Multi-site and managed buildings
From a single site to a large estate, you get the same standard: the system surveyed, the price fixed, the visit fitted around trading and everything written up afterwards.
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.
What a clean won’t put right
We’d rather tell you now than book work that will not help, so these are the things it won’t cover:
- Faulty motors, drives or bearings
- Problems with the unit’s controls or sensors
- Ventilation that was badly designed in the first place
If in doubt, give us a ring on 0345 646 2711, or email photos and we’ll say what we think.
Where we work
- Filter sections
- Drain trays
- Heating and cooling coils
- Internal panels
- Supply and extract fans
- Dampers and louvres
What AHU cleaning looks like in Cadnam
The nearest hospital to Cadnam is Tatchbury Mount Hospital, about 2.2 miles east. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale.
School buildings such as Bartley Church of England Junior School are usually done in the holidays, so classrooms aren’t disturbed. Tatchbury Mount Hospital, about 2.2 miles east, is the nearest hospital to Cadnam, and healthcare sites of every size need their supply air kept clean.
Cadnam is about 3 miles west of Totton, in Hampshire. If you need AHU cleaning in Cadnam, please give us a ring on 0345 646 2711 or drop us a line for a fixed quote. We work across South East England and London, Cadnam included. Our area takes in 683 places across Hampshire, large and small. For sites nearby, see our Southampton page, about 8 miles away.
AHU cleaning in SO40 is surveyed, quoted and booked the same way as anywhere else. That includes premises on Old Lyndhurst Road, White Hart Lane and Southampton Road and the roads around them. We also cover the places around Cadnam: Wittensford (1 mile west), Bartley (1 mile south-east), Copythorne (1 mile north-east), Newbridge (1 mile north) and Winsor (1 mile east). Within a short drive, we also cover Winchester (15 miles north-east), Eastleigh (11 miles east), Totton (3 miles east), Chandler's Ford (9 miles north-east), Hedge End (12 miles east) and Lymington (11 miles south).
What’s near Cadnam
We work in commercial kitchens and buildings around The White Hart pub and the streets around them. For rail, the closest station is Ashurst New Forest station, about 3.1 miles south-east of the centre. Other landmarks nearby include Tatchbury Mount Hospital (2.2 miles east) and National Dairy Museum (3.6 miles south-east). The countryside around Cadnam includes Copythorne Common.
What the work involves, part by part
Internal casing and panels
Damaged internal linings or loose panels can shed material into the air. Anything like that is recorded with pictures.
Heating and cooling coils
Because cooling coils run wet, the dirt on them tends to cling. We clean the coil and the tray beneath it together.
What your team can do, and what needs us
Staff cleaning doesn’t replace a specialist visit; it supports it. Clean filters and tidy surfaces slow the build-up, but hidden parts of the system still need specialist attention.
If your staff spot something between visits, such as dripping grease, a noisy fan, a smell or a filter that will not come clean, it’s best reported rather than tackled in-house. We can diagnose it and quote.
How we price AHU cleaning
Every site gets its own quote. This is what makes a difference:
- Site rules, permits and inductions
- Travel, parking and unloading
- Whether we need access equipment or extra panels
- A single visit or a regular plan
Kitchens, offices, schools and hospitals are all priced the same way: the size of the job, access, condition and working hours. Ask for a fixed quote and we will go through it with you.
What we need to know
Photos and a few facts are often enough to price the work. Useful things to send:
- Photos showing the whole system and its surroundings
- Your last certificate, test record or report
- The roof, plant room or outside wall the system runs to
- Any access panels or hatches you can see
Photos are the quickest way to a quote: wide shots of the system, close-ups of anything that worries you and how we’d get to it. Tell us what kind of site it is and when it’s open, and we can price many jobs without a visit.