West Sussex · Air handling unit cleaning
Air handling unit cleaning in Hunston, West Sussex
Our technicians work in Hunston on air handling unit cleaning. Fixed quotes, work around your opening hours and photo reports on every job.
- Dirty filters cutting the airflow
- Units needing a clean before a new tenant or handover
- Fan sections that haven’t been cleaned in years
AHU cleaning for kitchens and businesses in Hunston
Every supply and extract system relies on the air handling unit at its centre: it draws air in, filters it, heats or cools it and pushes it round the ductwork. Whatever builds up inside it travels with that air, so cleaning the unit matters as much as cleaning the ducts. If you have plant that needs cleaning after a refit and blocked condensate drains and slimy trays, we can help.
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.
Insurers, fire officers and environmental health officers all look at records. That’s why every job is written up in a report with pictures, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Place
- Hunston (PO20)
- Region
- West Sussex
- Paperwork
- Photo report after each visit
- Price
- A fixed price before work begins
- When we work
- Evenings, overnight and weekends; 24/7 emergencies
- Telephone
- 0345 646 2711
- Checked
- 30 October 2026
When it’s something else
We’d rather tell you now than book work that won’t help, so these are the things it won’t cover:
- Breakdowns that need a mechanical engineer
- Leaking heating or cooling coils
- Dirty ducts beyond the unit itself
Not sure which it is? You can phone us on 0345 646 2711, or send details by email and we’ll tell you honestly.
What we work on in Hunston
- Dampers and louvres
- Filter sections
- Heating and cooling coils
- Internal panels
- Drain trays
- Supply and extract fans
Why it’s worth doing now in Hunston
A clogged coil or dirty fan makes the unit work harder for the same airflow. The result is extra wear and a building that does not feel as comfortable, and a clean on your terms beats a breakdown on nobody’s. A fault that closes a site in a village like Hunston affects everyone who depends on it.
Putting the work off seldom saves money. Problems in a system tend to grow, which can make the next visit longer. If you are not sure what’s needed, ring 0345 646 2711, or email photos for straight advice and a fixed quote.
Why choose Duct Doctor in Hunston
- CHAS and SafeContractor accredited, with ISO 9001
- One number for every site across the South East and London
- Ventilation hygiene specialists since 2009
- Fixed quotes from a survey or photos
Read what affects the cost or our accreditations.
Aftercare tips
How long the results last depends on use and care. Here’s what we suggest:
- Make sure the unit’s access doors open easily
- Check the drain tray is emptying during routine visits
- Clear leaves and litter away from the intake
- Keep the certificate and photo report with the plant records
Once the clean is done, we send a TR19® certificate and a report with before and after photos. Keep both with the building’s maintenance records.
Make sure access doors and panels on the unit open easily. If a section is hard to get into, it tends not to get checked.
Do you need AHU cleaning in Hunston?
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.
Look out for any of the following:
- Plant that needs cleaning after a refit
- Air handling units never cleaned inside
- Dirty coils holding back the airflow
- Filters that are clogged or overdue
Healthcare ventilation, from large hospitals like St Richard's Hospital (about 2.3 miles north) to small clinics, depends on clean filters, coils and ducts.
What to look for in a quote
- Whether a survey comes first
- Which accreditations they hold, and whether you can check them
- What hours they’ll be on site
- Whether the quote shows VAT
Part by part
Filters
Every AHU relies on its filters to catch dust before it reaches the coils. We check them, and clean or change them as agreed in the quote, and clean the filter housing.
Rooftop and plant room units
Units on roofs and in plant rooms can be awkward to reach. We plan safe access as part of the survey so the quote reflects it.
Also near Hunston
Other services in Hunston
How the visit works
There’s very little for your team to do on the day. A contact on site lets us in at the agreed time and points us to the system, and we take it from there. Before we leave, the area is tidied and the paperwork follows. A few pictures of the system help us make the most of a visit to a place like Hunston.
- We agree a shutdown window that suits the building.
- Before cleaning, each section is photographed.
- We work through the unit from the intake to the outlet.
- We finish with the fan section and the drain tray.
- We take after photos and issue the certificate and report.
Preparing for the visit
- Find the previous report, if there is one
- Make sure equipment near the work can be switched off and left to cool
- Agree a time when the area can be out of use
Get a fixed quote
If you need AHU cleaning in Hunston, phone us on 0345 646 2711 or send us an email. Tell us what kind of premises it is and when it’s open, plus pictures or the previous report if they’re to hand. We typically send a fixed quote within one working day.
Read more
Hunston buildings and their air
The FSA’s food hygiene register lists about 6 schools, colleges and universities, about 18 care, childcare and hospital premises and about 3 hotels, B&Bs and guest houses with registered kitchens or food service within roughly a mile and a half of the centre of Hunston. Busy, occupied buildings like these are where clean supply air matters most. About 2.3 miles north of Hunston is St Richard's Hospital, the nearest hospital. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients. At about 56 miles from central London, Hunston sits well inside the area we cover. Visits are booked around your hours, evenings and weekends included.
For schools like North Mundham Primary School, the holidays are the usual time to inspect and clean ventilation.
Hunston is about 2 miles south of Chichester, in West Sussex. Every kind of commercial site in Hunston, we can take on AHU cleaning. We can work out of hours so trading is not interrupted. 371 places in West Sussex are on our list, large and small. You can also see our page for Portsmouth, about 13 miles away.
Our technicians cover all of PO20 for AHU cleaning and the streets around it. You’ll find streets such as Heath Close, Westlands Road and St Leodegars Way, all of which we cover for AHU cleaning. Close by, we work in Donnington (1 mile west), North Mundham (1 mile east), Runcton (1 mile east), Portfield (2 miles north) and Chichester (2 miles north). Further out, we also cover Bognor Regis (4 miles east), Selsey (5 miles south), Littlehampton (11 miles east), Emsworth (8 miles west), Rustington (12 miles east) and Angmering (13 miles east).
Near you in Hunston
Typical jobs here are in premises near Chichester High School For Girls and The Spotted Cow Public House, among other places. The nearest railway station is Chichester station, about 1.5 miles north of the centre. A little further out are St Richard's Hospital (2.3 miles north) and Chichester Castle (2 miles north).
Common questions in Hunston
Can you clean school ventilation in Hunston during the holidays?
Yes, out-of-term visits are normal for schools. Around Hunston, the Food Standards Agency lists about 6 schools and colleges with registered kitchens within a mile and a half or so. You can ring 0345 646 2711, or send details by email with the dates the site is empty.
Do you work at weekends in Hunston?
Yes, nights and weekends are routine for us. It means the site in Hunston keeps running as normal. Tell us your opening hours when you ask for a quote.
Can you come out in an emergency?
Yes. Our emergency line runs 24/7, for problems that can’t wait. Ring any time and tell us what’s happened.
Can you clean the ducts connected to the AHU?
Yes. Ventilation ductwork cleaning to TR19® Air is part of what we do. It’s often worth doing both at once, and we can survey both on the same visit.
What about areas you cannot get to?
They’re marked on the report. Often the fix is extra access, such as new panels in ductwork, which we can install.
What accreditations do you have?
CHAS, SafeContractor, ISO 9001 and BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. We are fully insured and have been trading since 2009.
Is a quote from photos possible?
Yes, if we can see what we need. If not, a site survey comes first, then a fixed quote.
Can one contract cover all our sites?
Yes. Our area covers London and the South East, so sites at different addresses can be planned together as one programme. Every site has its own report.
What affects the quote in Hunston
The quote reflects the site in front of us. We take into account:
- When the work can happen, such as evenings, overnight or weekends
- The number of sites or systems
- The condition we find in the survey
- Site requirements such as sign-in and permits
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.
Helping us quote
To speed up the quote, send us:
- Detail shots of panels, filters and grilles
- Your last certificate, test record or report
- When the site is open and when it’s quiet
- The site address and the type of premises
To get a fixed quote, phone us on 0345 646 2711 or use the quote form and tell us the type of site, your opening hours and roughly what the system looks like. A few photos and your last certificate or report help a lot. We normally come back within one working day.