West Sussex · Air handling unit cleaning
Chidham AHU cleaning
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces for commercial sites in Chidham and across West Sussex. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Coils clogged with dust and debris
- Plant that has been serviced but not cleaned
- Odours coming through the supply air
Managing agents and facilities teams in Chidham
Managing agents often deal with us directly. Tell us the site, the work and the access arrangements, and we will send a fixed quote.
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 pictures.
About our AHU cleaning in Chidham
Our AHU cleaning covers sites in Chidham and the rest of West Sussex, in buildings such as offices, schools, healthcare sites and shops. The work is timed around when the system can be switched off, including evenings, nights and weekends. The work covers dampers and louvres, heating and cooling coils and drain trays, and the jobs we see most are units that have only ever had filter changes and intake sections clogged with outdoor debris.
In rural areas, ventilation units are often in roof voids or outbuildings, which makes them easy to overlook.
The report is your system’s health record: a dated account with pictures of everything we did. Grease extract cleans are also certificated to TR19® Grease through the BESCA VHE portal, ready for your insurer.
- Place
- Chidham (PO18)
- Wider area
- West Sussex
- Reporting
- Photo report after each visit
- Quote
- A fixed quote up front
- Working hours
- After hours by arrangement; emergencies any time
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
Also near Chidham
Also in Chidham
Chidham questions
Do you cover smaller places like Chidham?
Yes. Chidham is within the area we cover across London and the South East. Just mention lanes, gates or anything else about the site when you book.
Do you do school ventilation cleaning in Chidham in the summer holidays?
Yes. Half-terms and the summer break are the natural time for school work. Food Standards Agency records list about 2 schools, colleges and universities with registered kitchens within about a mile and a half of Chidham. Booking early in the term gives the best choice of holiday dates.
Is there a survey before the work?
Yes, always. Diagnosis comes before treatment: the survey shows what needs doing and what access we need and the fixed quote is built on it.
Can you clean the ducts connected to the AHU?
Yes, supply and extract ducts, grilles and diffusers. The survey shows whether the ducts need cleaning now.
How long will the unit be out of action?
As a guide, it takes anything from half a day for one small unit to several shifts for a plant room full of them. We plan the shutdown around that, out of hours if needed.
What do you do with what you remove?
We contain it and take it with us. Grease, debris and waste water are collected as the work goes on, so it does not spread.
How often do AHUs need cleaning?
It depends on the unit, the filters and how the building is used. Regular inspection shows when it’s due, and the report recommends a next date.
Will the ventilation be off while you clean?
Yes, for the time we are working on it. We can work evenings, overnight or at weekends so the building isn’t left without ventilation when it’s busy.
Staff cleaning versus specialist work
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 they do not reach the grease that builds up further in. Reaching it takes a specialist with the right equipment.
If your staff spot something between visits, like drips, unusual noise, smells or damaged filters, they should report it rather than try to fix it. We can diagnose it and quote.
How the job changes from site to site
Internal casing and panels
Loose or damaged linings inside a unit can break up into the airstream. Anything like that is recorded with photos.
Heating and cooling coils
A dirty coil holds back the air and makes heating and cooling less effective. A clean gets air moving through the coil properly again.
Ventilation in Chidham buildings
Food Standards Agency data includes about 7 hospitals, care homes and childcare premises within about 1.5 miles of central Chidham. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. The nearest hospital to Chidham is St Richard's Hospital, about 4.6 miles east. Clean air matters most where people are unwell, and that’s as true in a care home as in a hospital. At about 57 miles from central London, Chidham sits well inside the area we cover. A survey and a fixed quote come first, then the visit at a time that suits you.
If you manage a school such as Chidham Parochial Primary School, ventilation cleaning is best booked for the holidays.
Chidham is about 4 miles west of Chichester, in West Sussex. From the centre of Chidham to the outskirts, we cover AHU cleaning for every kind of premises, from a single unit to a large public building. 371 places in West Sussex are on our list, large and small. For sites nearby, see our Portsmouth page (9 miles or so).
Postcode districts we cover here for AHU cleaning: PO18. Streets in the area include Chidham Lane, Harbour Way and Cot Lane, and we cover them all for AHU cleaning. Close by, we work in Nutbourne (1 mile north-west), Bosham (1 mile east), Broadbridge (1 mile east), Hambrook (1 mile north) and Bosham Hoe (2 miles south-east). Within a short drive, we also cover Bognor Regis (9 miles east), Chichester (4 miles east), Selsey (8 miles south-east), Littlehampton (15 miles east), Emsworth (3 miles north-west) and Portfield (5 miles east).
Local landmarks in Chidham
Around Chidham, our work takes us to kitchens and buildings near Bourne Community College and the streets around them. The nearest railway station is Nutbourne station, about 1 mile north-west. Well-known places in the area include Warblington Castle (4.1 miles west) and St Richard's Hospital (4.6 miles east). Open spaces near Chidham include Nutborne Marshes and Stoke Down.
What happens on the day
We turn up at the time agreed with you, often in the evening, overnight or at the weekend so the site keeps working. Equipment that has to be off is switched off and allowed to cool first, and the area around the work is covered and protected. On site, it takes a single shift for a typical unit, longer for large or heavily soiled ones. A few photos of the system help us make the most of a visit to a place like Chidham.
- First the unit is surveyed, from photos or a visit, and the scope agreed.
- 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.
- You get a TR19® certificate and a photo report.
Preparing for the visit
- Let us know when the site is closed or quiet
- Let us know about parking and loading
- Clear the space around the work
How to get a quote
Quoting starts with a diagnosis, from your pictures and details or, where that is not enough, a survey on site. After that, you get a fixed price for the work, before work begins.
Related advice
When to call us in Chidham
Filters catch most of the dust, but not all of it. The fine dust that passes the filters lands on the coils, the fan and the internal panels, building up layer by layer.
The symptoms we’re asked about most include:
- Dirty fans and fan housings
- Units needing a clean before a new tenant or handover
- Filters that are clogged or overdue
- Stale or musty smells from the ventilation
Healthcare buildings such as St Richard's Hospital, about 4.6 miles east, depend on their ventilation; if you manage a surgery, clinic or care home near Chidham, yours matters too.
What your quote should include
- Whether the whole system is included, or only the parts that are easy to reach
- Whether a written report and photos are included
- When they can work, and whether that is outside your opening hours
- Whether the quote shows VAT
What affects the quote in Chidham
Before we fix a price, we need to know a few things. We check:
- Access, including roofs, risers and ceiling voids
- How many systems or sites are involved
- The times the site is available
- Travel, parking and unloading
Working hours, access and the scale of the site all affect the cost. Each of those is built into the quote and give you a fixed price before work begins.
Helping us quote
You don’t need the technical terms. It helps if you can send:
- Close-ups of filters, grilles, hatches or access panels
- The site address and the type of premises
- Your opening hours and when the area is out of use
- Problems your staff have spotted
Need a price for AHU cleaning? Please give us a ring on 0345 646 2711 or use the quote form with a few details about the site. We’ll explain what we’d do and send a fixed quote before anything is booked.
Between visits
How long the results last depends on use and care. Here’s what we suggest:
- File each AHU report in the maintenance log
- Keep filter changes on time and recorded
- Plan the next inspection before the last report gets filed away
- Watch for drips or damp patches near the plant
Once the clean is done, we send a TR19® certificate and a report with before and after pictures. Keep both with the building’s maintenance records.
Keep the area around the intake clear. What’s near the intake ends up in the unit.