West Sussex · Air handling unit cleaning
Air handling unit cleaning in Southwick, West Sussex
Looking for AHU cleaning in Southwick? We survey first, send you a fixed quote and work around your opening hours, finishing with a written report and photos.
- Rooms that smell stuffy when the system runs
- Dirty coils holding back the airflow
- Dust built up on fan impellers
AHU cleaning in Southwick, done properly
All the building’s air passes through the fan, so dirt on the impeller and housing gets spread around. Fan, housing and the surrounding panels are cleaned as part of the job, with the unit switched off and made safe first. Common call-outs are for intake sections clogged with outdoor debris and air handling units with blocked filters, across supply and extract fans, dampers and louvres and heating and cooling coils.
In a smaller place like Southwick, buildings with ducted ventilation are more likely to be a school, a surgery, a care home or a small business unit than an office block. Even a small system collects dust in its ducts and filters.
Each visit ends with a written report and photos, so you have a record of what was done and when. Kitchen extract cleaning to TR19® Grease is certificated through the BESCA Vent Hygiene Elite portal.
- Place
- Southwick (BN42, BN41, BN43)
- Wider area
- West Sussex
- Paperwork
- Photo report after each visit
- Quotes
- A fixed quote up front
- Working hours
- After hours by arrangement; emergencies any time
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
Different parts, different methods
Filters
Filter condition tells you a lot about the rest of the unit. They’re photographed before and after for your records.
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.
Fixed quotes for AHU cleaning in Southwick
The survey tells us what the work involves. The main factors are:
- Any permits to work or inductions
- A single visit or a regular plan
- When the work can happen, such as evenings, overnight or weekends
- The scale of the work
The price reflects the work, not guesswork. That is why every job is surveyed first, and the price is agreed before any work starts.
What we need to know
Photos let us diagnose from a distance. The most useful are:
- The paperwork from the last visit, if you have it
- Detail shots of panels, filters and grilles
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- Any symptoms, from odd noises to smells or leaks
Quoting starts with a diagnosis, from your pictures and details or, where that isn’t enough, a survey on site. After that, you get a fixed price for the work so you know the cost before any work starts.
Looking after it afterwards
Looking after the system between visits is straightforward, and it makes the next visit easier:
- Report water on the plant room floor
- Make sure condensate is draining away
- Book the next check in line with the report
- File each AHU report in the maintenance log
Keep filter changes on schedule between cleans, as that does more than anything to keep the unit clean. Log every change so it’s easy to see when the next is due.
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.
Southwick: your questions answered
Do you cover smaller places like Southwick?
Yes, Southwick is part of our area, however small the site. Just mention lanes, gates or anything else about the site when you book.
Do you work overnight in Southwick?
Yes, evening, overnight and weekend work is normal for us. Your customers, staff or residents in Southwick needn’t be disturbed. Your opening times are the first thing we ask for.
What happens if you cannot reach some of it?
We record them on the report, with a note of where it is, and we explain what access is needed, such as extra access panels in ductwork.
Do you have a 24/7 line?
Yes, 24/7. Our office is open from 8am to 6pm on weekdays, with the emergency line covering every other hour.
What is TR19?
BESA’s ventilation hygiene specification in two main parts: TR19® Grease for kitchen extract systems and TR19® Air for general ventilation. It is not law, but it’s the benchmark.
Which kinds of sites do you work on?
We work for restaurants, pubs, hotels, schools, colleges, hospitals, care homes, offices and shops, plus food production and leisure sites.
Do you give a certificate after the clean?
Yes. Every clean comes with a TR19® certificate and a photo report. They’re worth keeping with the plant records.
What do you do with what you remove?
Waste is contained during the work and removed when we leave, from grease and debris to used cleaning water. None of it is left on site.
Also near Southwick
Other services in Southwick
Why it’s worth doing now in Southwick
Tenants, auditors and owners may want proof that the air handling plant is kept clean. A TR19® certificate and photo report give you that, ready to show anyone who asks. Systems on quieter sites still build up dirt and wear, just more slowly.
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’ll go through it with you.
Why choose Duct Doctor in Southwick
- One contact for all your sites in London and the South East
- Every job surveyed first
- A fixed price before any work starts
- In business since 2009
Read our cost guide and our accreditations and certificates.
What staff can safely do
Good housekeeping makes our visits easier, not unnecessary. Clean filters and tidy surfaces slow the build-up, but the parts you cannot see still need a specialist at the right interval.
When your team notices a problem between visits, like drips, unusual noise, smells or damaged filters, it’s best reported rather than tackled in-house. We can diagnose it and quote.
Southwick buildings and their air
Food Standards Agency records list about 21 schools, colleges and universities and about 26 care, childcare and hospital premises registered as food businesses in and around Southwick, up to about a mile and a half out. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. Southwick, about 46 miles from central London, is within our usual area. A survey and a fixed quote come first, then the visit at a time that suits you. Southwick’s nearest hospital, Southlands Hospital, is about 1 mile west. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
If you run a surgery, dental practice or care home near Southwick, clean ventilation matters as much to you as to a hospital like Southlands Hospital (about 1 mile west). If you manage a school such as Eastbrook Primary Academy, ventilation cleaning is best booked for the holidays.
Southwick is about 2 miles east of Shoreham-by-Sea, in West Sussex. If you need AHU cleaning in Southwick, please phone us on 0345 646 2711 or use the quote form for a fixed quote. Our area covers London and the South East, Southwick included. Our West Sussex coverage runs to 371 places, and Southwick is one of them.
Work in BN42, BN41 and BN43 is surveyed, quoted and booked the same way as anywhere else. If you need AHU cleaning at premises on Station Road, Roman Crescent and Southwick Street or a nearby road, we can help. With the A259 and A270 close by, Southwick is easy for our technicians to reach at any hour. If your site is just outside Southwick, we cover Kingston by Sea (1 mile north-west), Portslade (1 mile north-east), Shoreham-by-Sea (2 miles west), Hangleton (2 miles north-east) and Old Shoreham (2 miles west). Further out, we also cover Worthing (7 miles west), Haywards Heath (13 miles north-east), Burgess Hill (10 miles north-east), Littlehampton (13 miles west), Lancing (4 miles west) and Rustington (12 miles west).
Landmarks near Southwick
Around Southwick, our work takes us to kitchens and buildings near Shoreham Academy, Benfield Hill and The Ship Inn, among other places. Southwick has its own railway station: Southwick station. Well-known places in the area include Southlands Hospital (1 mile west) and Churchill Square (4 miles east). The countryside around Southwick includes Shoreham Beach and Thundersbarrow Hill.
What happens on the day
We turn up at the time agreed with you, which is often after service, overnight or at a weekend. Anything that needs to be off for the work is switched off and left to cool first, and floors and nearby surfaces are sheeted. On site, it 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 Southwick can usually be finished without a second trip.
- We agree a shutdown window that suits the building.
- Before cleaning, each section is photographed.
- Filters, coils and internal surfaces are cleaned from intake to discharge.
- The fan and drain tray are cleaned and the drain checked.
- After photos are taken and the certificate issued.
Preparing for the visit
- Allow time for equipment near the work to be turned off and cool down
- Let us know when the site is closed or quiet
- Mention any locked doors, roof access or ceiling voids
How to get a quote
Quotes are quick. Send a few details and pictures, and we typically reply with a fixed quote within one working day. Where a survey is needed, we arrange a time that suits the site.
Read more
When to call us in Southwick
An AHU’s intake draws in outdoor air and everything in it: dust, pollen, leaves and debris. Most of it lands at the intake and the first stage of filters, and the finer material travels on.
Any of these means the system needs a check-up:
- Coils clogged with dust and debris
- Air handling units never cleaned inside
- Fan sections that haven’t been cleaned in years
- Plant that needs cleaning after a refit
Workplaces around Southwick station with an air handling unit need the filters, coils and drain tray looked at, as well as the ducts.
Before booking anyone
- Whether VAT is included
- Proof of accreditation you can verify
- Whether they’re fully insured
- Whether the whole system is included, or only the parts that are easy to reach