West Sussex · Air handling unit cleaning
Air handling unit cleaning in Holbrook, West Sussex
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces for commercial sites in Holbrook and across West Sussex. CHAS, SafeContractor and ISO 9001, and fully insured.
- Plant that needs cleaning after a refit
- Intake sections clogged with outdoor debris
- Fan sections that haven’t been cleaned in years
Questions from Holbrook
Can you come to Holbrook after we close?
Yes, nights and weekends are routine for us. It means the site in Holbrook keeps running as normal. Just phone us on 0345 646 2711 or email us with your opening times and we will plan around them.
Can ventilation in schools around Holbrook be cleaned out of term?
Yes. Half-terms and the summer break are the natural time for school work. There are about 2 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Holbrook. You can call 0345 646 2711, or email photos with the dates the site is empty.
What does TR19 mean?
TR19® is the BESA specification for keeping ventilation systems clean. Since 2019, TR19® Grease has been a standalone specification for grease in kitchen extract systems, while TR19® Air covers other supply and extract ductwork.
Do you look at the system first?
Yes. Every job is surveyed first, from your pictures and details, or with a visit where necessary. A fixed quote follows.
What do you do to protect the area?
We start with protection: sheeting over floors, worktops and anything close to the work. We tidy up and take our waste away before we leave.
Are you insured?
Yes. Duct Doctor is fully insured, and we can share the details when you need them.
Does the AHU have to be shut down for cleaning?
Yes. Cleaning needs the unit off and isolated, and we time the work to suit the site.
What do you do with what you remove?
We take it away when we go. During the work, it’s contained to keep the area clean.
AHU cleaning in Holbrook, done properly
Units vary a lot in size, age and layout, from a small ceiling-mounted unit to a large rooftop plant. We look at the unit first, from pictures or a site visit, and send you a fixed quote, so you know where you stand. We’re often asked to deal with plant that needs cleaning after a refit and dust built up on fan impellers, across heating and cooling coils, filter sections and drain trays.
In rural areas, ventilation units are often in roof voids or outbuildings, where filters and drain trays get forgotten.
We’re CHAS and SafeContractor accredited, we hold ISO 9001 and we are fully insured. We are also a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we have been trading since 2009.
- Where
- Holbrook (RH12)
- Wider area
- West Sussex
- Reporting
- Photo report after every visit
- Quote
- A fixed quote up front
- Hours
- Out of hours as standard, 24/7 emergency line
- Telephone
- 0345 646 2711
- Checked
- 30 October 2026
Also near Holbrook
What else we do in Holbrook
Landlords, agents and facilities managers
The Fire Safety Order 2005 puts the duty to manage fire risk on the responsible person, and that can be the employer, the owner, a landlord, a facilities manager or a managing agent. With shared responsibility, good records help everyone.
Managing agents often deal with us directly. Tell us the site, the work and the access arrangements and we will come back with a fixed quote.
Why deal with it now?
Leave an AHU uncleaned and the dirt does not stay put. It’s carried through the ductwork and out of the grilles, which is why the unit and the ducts are best cleaned together. Planning a trip to Holbrook ahead is easier for everyone than a rushed one.
Combining work into one visit or one programme can make for a more efficient booking. Mention every system or site you need covered and we will price it together.
Why choose Duct Doctor in Holbrook
- A single point of contact for sites across the South East and London
- We’re fully insured
- A fixed price before any work starts
- Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
See how cleaning jobs are priced or our accreditations and certificates.
Aftercare tips
Good habits slow the build-up between visits. A few tips:
- Report musty smells from the vents right away
- Clear leaves and litter away from the intake
- Check the drain tray is emptying during routine visits
- Keep the certificate and photo report with the plant records
The report shows each section of the unit before and after, and note any part we couldn’t get to. Any defects we noticed, like a leaking tray or damaged lining, are listed.
Make the drain tray part of every maintenance visit. Catching a slow drain early stops standing water building up.
Fixed quotes for AHU cleaning in Holbrook
Some jobs are bigger than they look, and some smaller. The main factors:
- Site requirements such as sign-in and permits
- The condition of the system
- Working hours and out-of-hours timing
- Travel, parking and unloading
What you pay depends on how big the system is, the condition it’s in and access to every part of it. We give you a fixed price before we start, so you know where you stand.
What to send for a quote
You do not need the technical terms. It helps if you can send:
- Where the site is and what kind of site it is
- The times we could work without disrupting the site
- Close-ups of filters, grilles, hatches or access panels
- How we’d reach plant on a roof or in a plant room
To get a fixed quote, call us on 0345 646 2711 or use the quote form with the site type, your trading hours and a short description of the system. Photos and the last report, if you have one, make the quote quicker. You’ll usually have a quote within one working day.
What AHU cleaning can’t fix
An honest diagnosis matters more to us than a booking, so here’s what AHU cleaning won’t do:
- Faulty motors, drives or bearings
- Dirty ducts beyond the unit itself
- Building management system faults
If in doubt, ring 0345 646 2711 or email us and we’ll say what we think before booking.
What we work on in Holbrook
- Heating and cooling coils
- Dampers and louvres
- Internal panels
- Filter sections
- Supply and extract fans
- Drain trays
What your team can do, and what needs us
When your team notices a problem between visits, like drips, unusual noise, smells or damaged filters, they should report it rather than try to fix it. We will take a look and give you a fixed quote.
Your own staff can handle the daily basics: wiping down canopy surfaces, cleaning filters and keeping a simple log. Inside the ducts, risers and fan is specialist work, and that’s where we come in.
AHU cleaning in Holbrook: local notes
Going by the FSA’s register, there are about 3 care, childcare and hospital premises serving food within 1.5 miles or so of the middle of Holbrook. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. We cover Holbrook, about 30 miles from central London, as part of our work across London and the South East. Visits are booked around your hours, evenings and weekends included. Horsham Hospital is the nearest hospital, about 1.7 miles south-west of Holbrook. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
Classrooms and halls at schools such as Holbrook Primary School are easiest to work in when pupils are away. For workplaces around Warnham station with mechanical ventilation, cleaning can be done in the evening or at weekends. Horsham Hospital, about 1.7 miles south-west, is the nearest hospital to Holbrook, and healthcare sites of every size need their supply air kept clean.
Holbrook is about 2 miles north of Horsham, in West Sussex. Whether your site is in the middle of Holbrook or further out, we cover AHU cleaning for every kind of premises, from a single unit to a large public building. We cover 371 places across West Sussex, from busy centres to quieter spots. There’s also a page for Guildford, about 16 miles away.
AHU cleaning in RH12 is surveyed, quoted and booked the same way as anywhere else. Other places close to Holbrook include Warnham (2 miles west), Horsham (2 miles south), Broadbridge Heath (3 miles south-west), Tower Hill (3 miles south-west) and Rowhook (4 miles west). Larger places within reach include Crawley (5 miles east), Haywards Heath (11 miles south-east), Burgess Hill (12 miles south-east), East Grinstead (13 miles east), Broadfield (4 miles east) and Storrington (13 miles south-west).
Around Holbrook
We work in commercial kitchens and buildings around Greenway Academy and Warnham Park and the streets around them. Holbrook’s nearest station is Warnham station, roughly 0.8 miles west. Other landmarks nearby include Horsham Hospital (1.7 miles south-west). For a walk, there’s Warnham LNR and Vann Lake.
The process
Night work is normal for us. A lot of visits happen overnight or at weekends, so the site can open as normal afterwards. The visit itself takes one overnight shift for many single units, with bigger plant phased. The timing of a visit to Holbrook is set by you, and the travel is our side of the planning.
- We survey the unit from pictures or on site and agree what’s included.
- With your site team, the unit is switched off and isolated, then the area around it protected.
- We clean or change the filters as agreed, then clean the coils, fan and internal panels.
- Drain trays are cleared and cleaned and the outlet checked.
- A TR19® certificate and photo report follow the clean.
Before we arrive
- Mention any sign-in, permit or induction we need
- Let us know about parking and loading
- Make sure someone can let us in and lock up afterwards
Ask for a quote
Want a quote for AHU cleaning? Please give us a ring on 0345 646 2711 or send us an email with a few details about the site. We’ll explain what we’d do and send a fixed quote before anything is booked.