West Sussex · Air handling unit cleaning
Langley Green AHU cleaning
For air handling unit cleaning in Langley Green, one call is all it takes, from survey to sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.
- Dust-coated heating and cooling coils
- Blocked condensate drains and slimy trays
- Leaves and litter drawn into the unit
AHU cleaning in Langley Green
No two plant rooms are the same, 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 has been serviced but not cleaned and odours coming through the supply air, on internal panels, dampers and louvres and supply and extract fans.
In a place like Langley Green, air handling units are often tucked into roof spaces or small plant rooms, out of sight and easy to overlook. Every unit, large or small, has filters, coils and a drain tray to keep clean.
Nothing is signed off by word of mouth: a written report, dated and illustrated with pictures, and for TR19® Grease cleans, a certificate issued through the BESCA VHE portal. It shows what was done and what, if anything, couldn’t be reached.
- Location
- Langley Green (RH11, RH10)
- Region
- West Sussex
- Reporting
- Report and pictures after the visit
- Price
- A fixed price before any work starts
- Working hours
- Overnight and weekend work, 24/7 emergency callout
- Telephone
- 0345 646 2711
- Page updated
- 30 October 2026
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.
A few tasks are always specialist work: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease call for the right kit, training and safe access. Leave those to us.
How the job changes from site to site
Rooftop and plant room units
Many AHUs sit on roofs or in plant rooms with limited access. We plan safe access as part of the survey so the quote reflects it.
Fans and fan sections
Build-up on fan blades can upset the balance and add wear. A clean fan runs more smoothly.
Why deal with it now?
Dirt left in an air handling unit does not stay in the unit. It moves on into the ductwork and out into the rooms, which is why the unit and the ducts are best cleaned together. A quieter site near Langley Green still needs its system looked after.
A single site or a whole portfolio, the quote is built the same way: what needs doing, how we get to it and when. You will have a fixed price before work begins.
Why us?
- Every visit written up, with photos
- Survey first, then a fixed quote
- CHAS, SafeContractor and ISO 9001
- Fixed quotes from a survey or photos
Read what affects the cost or our accreditations.
Honest limits
A few issues sit outside what this work can do:
- A system that’s undersized for the building
- Breakdowns that need a mechanical engineer
- The supply and extract ducts, quoted separately
If you’re not sure, just ring 0345 646 2711, or send details by email and we will give you a straight answer before you book.
Parts of the system we cover
- Dampers and louvres
- Heating and cooling coils
- Filter sections
- Drain trays
- Internal panels
- Supply and extract fans
How the visit works
The visit has three parts: set-up, the treatment itself and the sign-off. Getting ready means protecting surfaces and switching off what needs to be off, and the sign-off is a written report with photos. Most of the time goes on the work itself, and that takes one overnight shift for many single units, with bigger plant phased. Evenings, weekends or a closed day all work for a site in a place like Langley Green.
- The survey covers the unit, its access and how it can be shut down.
- We sheet the area and the unit is isolated.
- Dirt and debris are removed from each section.
- Coils and trays are cleaned and the condensate drain cleared.
- We close every panel, hand the unit back and send the report and certificate.
How to prepare
- Move anything stored near the system
- Tell us about site rules, permits or sign-in
- Dig out any earlier paperwork for the system
Getting a quote
Quotes are quick. Call or email with a few details and you will usually have a fixed price within one working day. Where a survey is needed, we arrange a time that suits the site.
Related advice
Between visits
To keep the system working properly between visits:
- Stick to the filter change plan
- Make sure the unit’s access doors open easily
- Don’t ignore odours coming through the grilles
- Note any water around the unit or leaks below it
Keep filter changes on schedule between cleans, because good filters protect everything downstream. Log every change so it’s easy to see when the next is due.
Keep the unit’s doors and panels in working order. If a section is hard to get into, it tends not to get checked.
Signs you need AHU cleaning in Langley Green
Most units live out of sight on roofs, in plant rooms or in ceiling voids, so they’re easy to forget about. Months can pass without anyone looking inside.
These are the problems we see most often:
- Filters that are clogged or overdue
- Units needing a clean before a new tenant or handover
- Odours coming through the supply air
- Fan sections that haven’t been cleaned in years
School buildings such as Langley Green Primary are normally done in the holidays, so classrooms are not disturbed.
Comparing quotes
- Whether the quote shows VAT
- What happens if part of the system cannot be accessed
- When the next visit should be, and why
- Whether the quote is based on a survey or photos
Ventilation in Langley Green buildings
Food Standards Agency data includes about 16 schools, colleges and universities, about 10 caring premises (care homes, nurseries and hospitals) and about 9 hotels and B&Bs within roughly a mile and a half of the centre of Langley Green. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. For Langley Green, the closest hospital is Langley Green Hospital, roughly under half a mile south. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes. We cover Langley Green, about 26 miles from central London, as part of our work across London and the South East. We work evenings, overnight and at weekends, so the visit fits around the site.
If you run a surgery, dental practice or care home near Langley Green, clean ventilation matters as much to you as to a hospital like Langley Green Hospital (about less than half a mile south).
Langley Green is about 1 mile north of Crawley, in West Sussex. Sites in Langley Green get the same service as everywhere we cover: diagnosis first, a fixed price, out-of-hours working where necessary and a written report with pictures. We cover 371 places across West Sussex, large and small. We also work in Guildford, around 18 miles away.
All of RH11 and RH10 is covered for AHU cleaning, from the main roads to the quietest streets. That includes premises on London Road, Cherry Lane and Dobson Road and the roads around them. We also cover West Green (1 mile south), Crawley (1 mile south), Three Bridges (2 miles south-east), Southgate (2 miles south) and Forge Wood (2 miles east). Within a short drive, we also cover Horsham (7 miles south-west), Haywards Heath (10 miles south-east), Burgess Hill (12 miles south), East Grinstead (8 miles east), Broadfield (3 miles south) and Billingshurst (14 miles south-west).
Near you in Langley Green
Typical jobs here are in premises near Dr Samuel Johnson pub, Central Sussex College and Hazelwick School, among other places. Langley Green’s nearest station is Crawley station, about 1.4 miles south of the centre. Other landmarks nearby include Crawley Museum (1 mile south) and Langley Green Hospital (under half a mile south). For a walk, there’s Tilgate Lake.
FAQs for Langley Green
Can ventilation in schools around Langley Green be cleaned out of term?
Yes, out-of-term visits are normal for schools. Food Standards Agency records list about 16 schools, colleges and universities with registered kitchens within about a mile and a half of Langley Green. Tell us your holiday dates and we will book the visit for when the site is empty.
Can the work in Langley Green be done at night or at weekends?
Yes, evening, overnight and weekend work is normal for us. The site is handed back ready to open. Your opening times are the first thing we ask for.
What does AHU cleaning cost?
It depends on the site, so we quote each one individually. For a quote, give us a ring on 0345 646 2711 or drop us a line with the site type, opening hours and a few pictures.
Can you clean the ducts connected to the AHU?
Yes. We reach the ducts through access panels, and any sections we can’t reach are noted in the report, with new panels fitted where needed.
What types of premises do you cover?
All kinds of commercial and public premises: from restaurants, pubs and hotels to schools, hospitals, care homes, offices, shops and food production sites. Work is timed around how each site runs.
Will you repair the fan or motor?
We clean the unit and flag faults rather than repair them, with the details in the report.
How much notice do you need?
That depends on the slot you want and the size of the job. Tell us your preferred dates when you ask for a quote, and if it’s an emergency, call us any time.
What do you do with what you remove?
We take it away at the end of the visit. While we work, it’s kept contained so the area stays clean.