Surrey · Air handling unit cleaning
Birtley Green AHU cleaning
Professional AHU cleaning in and around Birtley Green, timed so the site keeps working and signed off in writing with pictures.
- Plant that needs cleaning after a refit
- Stale or musty smells from the ventilation
- Units that have only ever had filter changes
How we handle AHU cleaning in Birtley Green
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’re dealing with plant that needs cleaning after a refit and plant that has been serviced but not cleaned, we can put it right.
In rural areas, ventilation units are often in roof voids or outbuildings, which makes them easy to overlook.
The sign-off is always in writing: a dated report with photos of the work, plus a certificate through the BESCA Vent Hygiene Elite portal when the work is a TR19® Grease clean. Any parts we couldn’t reach are recorded on it too.
- Place
- Birtley Green (GU5)
- Wider area
- Surrey
- Records
- Report and pictures after the visit
- Quote
- A fixed quote up front
- When we work
- Out of hours as standard, 24/7 emergency line
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
Fixed quotes for AHU cleaning in Birtley Green
The quote reflects the site in front of us. We take into account:
- Site rules, permits and inductions
- How big the system is
- How many systems or sites are involved
- When the work can happen, such as evenings, overnight or weekends
When the work has to happen, how we reach it and how big the site is all affect the cost. Each of those is built into the quote and give you a fixed price before any work starts.
Helping us quote
You don’t need the technical terms. It helps if you can send:
- Problems your staff have spotted
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- Close-ups of filters, grilles, hatches or access panels
- Wide photos of the system and the area around it
The quickest way to a quote is to send pictures: the system from a couple of angles, plus any access panels or hatches. Tell us what kind of site it is and when it’s open, and many jobs can be priced from that alone.
The process
Before we leave, we walk the area with whoever is on site. We point out anything that couldn’t be reached or needs a follow-up, and the same goes into the written report. The visit takes half a day to a full day per unit, with large plant planned over several shifts. Pictures of the system and its access let us plan the work in Birtley Green before we set off.
- We look at the unit and the plant area during the survey.
- The area is protected and the unit made safe.
- Each section is cleaned of dust, debris and slime.
- 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
- Clear the space around the work
- Have your last certificate or report to hand
- Mention any sign-in, permit or induction we need
Getting a quote
Here’s what helps us quote: the address, the type of site and when it’s open, photos of the system and the last certificate or report, if there is one. Then phone us on 0345 646 2711 or email us.
Related advice
Common questions in Birtley Green
Will you come out to Birtley Green?
Yes. Villages and rural sites across the South East are part of our work, Birtley Green included. Let us know about access, parking and anything unusual about getting there when you book.
Do you cover Birtley Green for AHU cleaning?
Yes, Birtley Green is within the area we cover across London and the South East. To start, ring 0345 646 2711, or send details by email with a few photos of the system.
What types of premises do you cover?
Restaurants and pubs, hotels, schools and colleges, hospitals and care homes, offices and retail, as well as food production and leisure sites.
Can you set up regular visits?
Yes. Plans on a 3, 6 or 12-monthly cycle are available, depending on what the system needs.
What about areas you cannot get to?
We record them on the report, with a note of where it is, and we tell you what would make it reachable, for example new access panels.
Can you clean without disrupting the building?
Yes. The clean is planned around when the unit can be switched off. In hospitals and care homes, we agree timings with the site team.
What’s included in an AHU clean?
The main parts are the filters, coils, drain tray, fan and inside of the casing. We confirm the scope after looking at the unit.
How often do AHUs need cleaning?
TR19® Air takes a risk-based approach, so it depends on inspection rather than a fixed interval. We recommend a next date in each report.
Also near Birtley Green
What else we do in Birtley Green
Multi-site and managed buildings
Facilities teams in offices, schools and healthcare sites book us too across Surrey. Work can be phased by floor, building or site to keep disruption down.
The Fire Safety Order 2005 puts the duty to manage fire risk on the responsible person, which may be the employer, owner, landlord, FM or managing agent. Where responsibility is shared, records matter even more.
What your team can do, and what needs us
Keep a record of what your team does. A dated log of in-house cleaning and checks helps show that the system is managed between specialist visits, alongside our reports.
Day-to-day cleaning is something your team can do: wiping canopies, washing grease filters and recording it in a log. What they cannot safely do is clean inside the ductwork, the fan or the risers, which is where we come in.
Aftercare tips
Once we’ve finished, these simple steps help:
- Diary the inspection date recommended in the report
- Don’t store bins or materials near the intake
- Report musty smells from the vents right away
- Make sure the unit’s access doors open easily
Restart the unit with your site team or maintenance contractor once we’ve finished. Keep an eye on the condensate drain over the next few days to make sure it stays clear.
Change or clean filters on time. Once filters clog, dirt starts getting past them.
Why it’s worth doing now in Birtley Green
A light clean now is simpler than a heavy one later. Years of build-up make the job longer and harder, particularly where damp has made it stick. With notice, the visit to Birtley Green can be fitted around your bookings and events.
What you pay depends on the size of the system, the condition it’s in and how easy it is to reach. You get a fixed price before we start, so there are no surprises.
Why us?
- We’re fully insured
- Every job surveyed first
- Fixed quotes from a survey or photos
- Evenings, overnight and weekends, plus 24/7 emergency callout
AHU cleaning in Birtley Green: local notes
Food Standards Agency records list about 3 care, childcare and hospital premises registered as food businesses within roughly a mile and a half of the centre of Birtley Green. Busy, occupied buildings like these are where clean supply air matters most. About 29 miles out from central London, Birtley Green is part of the South East area we work across. We work evenings, overnight and at weekends, so the visit fits around the site. About 3.6 miles west of Birtley Green is Milford Hospital, the nearest hospital. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes.
Wherever a school like Bramley CofE Aided Infant School and Nursery has ducted ventilation, a half-term visit keeps the work out of lesson time. If you run a surgery, dental practice or care home near Birtley Green, clean ventilation matters as much to you as to a hospital like Milford Hospital (about 3.6 miles west).
Birtley Green is about 5 miles south of Guildford, in Surrey. Every kind of commercial site in Birtley Green, we can take on AHU cleaning. We can work out of hours so trading is not interrupted. Across Surrey, we cover 395 places, Birtley Green among them.
Work in GU5 is surveyed, quoted and booked the same way as anywhere else. We also cover Shamley Green (1 mile east), Grafham (1 mile south), Bramley (1 mile north-west), Wonersh (1 mile north) and Thorncombe Street (1 mile south-west). Further out, we also cover Guildford (5 miles north), Woking (10 miles north), Camberley (13 miles north-west), Farnham (11 miles west), Reigate (15 miles east) and Walton-on-Thames (15 miles north-east).
Local landmarks in Birtley Green
Around Birtley Green, our work takes us to kitchens and buildings near Cucknell's Wood, St Catherine's School and Red Lion Inn, among other places. Birtley Green’s nearest station is Shalford station, about 2.6 miles north of the centre. Other landmarks nearby include Milford Hospital (3.6 miles west) and Guildford Castle (3.9 miles north). Open spaces near Birtley Green include Frith Hill and Lower Lake.
Part by part
Filters
Clogged filters reduce airflow, and dirt can get round the edges. The filter section is cleaned so new or cleaned filters sit properly.
Heating and cooling coils
Because cooling coils run wet, the dirt on them tends to cling. We clean the coil and the tray beneath it together.