West Sussex · Air handling unit cleaning
Air handling unit cleaning in Southgate, West Sussex
AHU cleaning for Southgate, from a team that has been trading since 2009. Out-of-hours visits and 24/7 emergency callout.
- Dirty filters cutting the airflow
- Dust built up on fan impellers
- Dirty coils holding back the airflow
What affects the cost of AHU cleaning
The quote reflects the site in front of us. We consider:
- Whether we need access equipment or extra panels
- What state the system is in
- How many systems or sites are involved
- Any permits to work or inductions
Whatever the type of site, the quote works the same way: how much there is, how we reach it, what state it’s in and when we can work. Ask for a fixed quote and we’ll go through it with you.
What we need to know
To speed up the quote, send us:
- Close-ups of filters, grilles, hatches or access panels
- Your last certificate, test record or report
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- Where the plant sits or the system leaves the building, such as a roof or outside wall
Some systems can be priced from pictures; others need a survey. Big or complicated sites, and systems that are hard to see in pictures, get a survey first. Either way, the quote is fixed before any work is booked.
How we handle AHU cleaning in Southgate
Drain trays under cooling coils are meant to empty. When the drain blocks, water sits there and the tray turns slimy, right in the path of the air going into the building. Cleaning and clearing it is a key part of the job. If you’re dealing with odours coming through the supply air and coils clogged with dust and debris, we can put it right, from dampers and louvres, filter sections and internal panels onwards.
In a place like Southgate, air handling units are often tucked into roof spaces or small plant rooms, where they’re easy to forget. Every unit, large or small, has filters, coils and a drain tray to keep clean.
Insurers, fire officers and environmental health officers all look at records. So every job comes with a written report and pictures, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Location
- Southgate (RH10, RH11)
- Region
- West Sussex
- Records
- Photo report after each visit
- Quote
- Fixed quote, typically within a working day
- Working hours
- After hours by arrangement; emergencies any time
- Call
- 0345 646 2711
- Checked
- 30 October 2026
Keeping the system healthy
Results last longer with the right care. Here’s what we suggest:
- Keep inspection doors on the unit in good order
- Store the TR19 paperwork where auditors can find it
- Keep the area around the fresh air intake clear
- Make sure condensate is draining away
We recommend when the unit should next be inspected or cleaned, taking into account how dirty it was. Under TR19® Air the timing is set by inspection and risk, not a fixed calendar.
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.
Southgate questions
Can you work in Southgate outside opening hours?
Yes, evening, overnight and weekend work is normal for us. Your customers, staff or residents in Southgate needn’t be disturbed. Just phone us on 0345 646 2711, or send details by email with your opening times and we will plan around them.
Will you come out to Southgate?
Yes, we work in villages as well as towns, and Southgate is covered. The journey is planned ahead, so a few details about the route help.
What is TR19?
It’s the industry benchmark for cleaning ventilation and kitchen extract systems, written by BESA. It covers how systems are inspected, cleaned and checked and expects a risk-based approach.
How often do AHUs need cleaning?
Under TR19® Air, cleaning is led by inspection and risk rather than a set calendar. Each report suggests when the unit should next be looked at.
Do you do ventilation duct cleaning too?
Yes. We reach the ducts through access panels, and any sections we cannot reach are noted in the report, and new panels can be fitted.
Can you fix a faulty AHU?
Mechanical repairs to the unit are for your HVAC maintenance contractor. We’ll flag anything we notice during the clean.
Which sectors do you work in?
Restaurants and pubs, hotels, schools and colleges, hospitals and care homes, offices and retail, plus food production and leisure sites.
What should I send you?
The site address, the type of premises and your opening hours, plus pictures of the system and your last certificate or report if you have one.
Places near Southgate
More services for Southgate
Landlords, agents and facilities managers
For anyone managing more than one site, we can schedule visits across all of them on one quote. Each site gets its own report and pictures, so records stay tidy.
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 send the paperwork to whoever needs it.
Common problems we fix in Southgate
Most units live out of sight on roofs, in plant rooms or in ceiling voids and are rarely seen by anyone but maintenance staff. Months can pass without anyone looking inside.
Most sites get in touch after spotting something like this:
- Plant that needs cleaning after a refit
- Drain trays holding standing water
- Dirty fans and fan housings
- Dust-coated heating and cooling coils
For workplaces around Crawley station with mechanical ventilation, cleaning can be done in the evening or at weekends.
Before booking anyone
- What insurance they carry
- Whether the price is fixed
- What hours they’ll be on site
- When the next visit should be, and why
Leave it or put it right?
Facilities teams are often asked for evidence that the ventilation is looked after. Our certificate and photo report give you clear evidence, ready to show anyone who asks. When a site near Southgate shuts unexpectedly, the people who rely on it notice at once.
A single site or a whole portfolio, the quote is built the same way: the work involved, the access and the timing. You’ll have a fixed price before any work starts.
Why choose Duct Doctor in Southgate
- One number for every site across the South East and London
- Full insurance on every job
- Work around your opening hours, with 24/7 emergency cover
- Trading since 2009
Staff cleaning versus specialist work
Your own staff can handle the daily basics: wiping canopies, washing grease filters and recording it in a log. Inside the ducts, risers and fan is specialist work, and that is where we come in.
For ventilation and air handling systems, in-house care is mostly about checks: keeping grilles clear, noting unusual noise or smells and logging filter changes. The inside of ducts and units needs a specialist.
How it works
We are used to working while the site is closed. A lot of visits happen overnight or at weekends, so the site can open as normal afterwards. The visit itself takes a single shift for a typical unit, longer for large or heavily soiled ones. In a smaller place like Southgate, parking is rarely the issue, but tell us about gates, roof access and opening hours.
- We look at the unit and the plant area during the survey.
- We sheet the area and the unit is isolated.
- Dirt and debris are removed from each section.
- We clean the coils and clear the tray and drain.
- The unit is closed up and handed back, with a report to follow.
Preparing for the visit
- Have your last certificate or report to hand
- Mention any parking or loading restrictions
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
Ask for a quote
To help us quote: the address, the type of site and when it’s open, a few photos and the last certificate or report, if there is one. Once you have those, ring 0345 646 2711, or email photos.
Read more
Ventilation in Southgate buildings
Food Standards Agency records list about 23 schools, colleges and universities, about 24 caring premises (care homes, nurseries and hospitals) and about 6 hotels and B&Bs registered as food businesses within 1.5 miles or so of the middle of Southgate. Buildings like these often rely on mechanical ventilation, which TR19® Air covers. Southgate’s nearest hospital, Crawley Hospital, is about 0.7 miles north. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too. At about 27 miles from central London, Southgate sits well inside the area we cover. Visits are booked around your hours, evenings and weekends included.
Wherever a school like Southgate Primary has ducted ventilation, a half-term visit keeps the work out of lesson time. Crawley Hospital, about 0.7 miles north, is the nearest hospital to Southgate, and healthcare sites of every size need their supply air kept clean.
Southgate is about 1 mile south-west of Crawley, in West Sussex. Sites in Southgate get the same service as everywhere we cover: a survey first, a fixed quote, work timed around your hours and a report with photos. Southgate is one of 371 places in West Sussex we cover for commercial clients. We also work in Brighton, about 19 miles from Southgate.
We work across RH10 and RH11 for AHU cleaning and the roads nearby. Streets in the area include Oak Road, Cook Road and Colet Road, all of which we cover for AHU cleaning. Being close to the A2004 and A2219, Southgate is simple for us to get to at any hour. Neighbouring places we cover for AHU cleaning include Crawley (1 mile north-east), Tilgate (1 mile east), West Green (1 mile north), Three Bridges (1 mile north-east) and Langley Green (2 miles north). Further out, we also cover Horsham (6 miles south-west), Haywards Heath (9 miles south-east), Burgess Hill (11 miles south), East Grinstead (8 miles east), Billingshurst (13 miles south-west) and Roffey (5 miles south-west).
Near you in Southgate
In Southgate, that means kitchens and buildings near Three Bridges Junior School, St Wilfrid's Catholic School and Tilgate Park, among other places. There’s a railway station in Southgate itself: Crawley station. Well-known places in the area include Crawley Museum (0.7 miles north) and County Mall (0.5 miles north-east). The countryside around Southgate includes Tilgate Lake.