Surrey · Air handling unit cleaning
AHU Cleaning in Great Bookham
AHU cleaning for Great Bookham and the surrounding area: a survey, a fixed price, careful work and proper paperwork. Call for a fixed quote.
- Coils clogged with dust and debris
- Air handling units never cleaned inside
- Dust built up on fan impellers
The process
At the end of the visit, someone from your team can look over the work with us. We point out anything that couldn’t be reached or needs a follow-up, and it goes on the report too. The visit takes half a day to a full day per unit, with large plant planned over several shifts. Around Great Bookham, access is typically simpler than in a town centre, though gates and roof access are worth mentioning.
- We survey the unit from photos or on site and agree what’s included.
- The unit is shut down with your site team and the area protected.
- Filters, coils, fan section and casing are cleaned in turn.
- We clean out the drain tray and make sure it drains.
- You get a TR19® certificate and a photo report.
Before we arrive
- Tell us the best time to work, such as after service or at a weekend
- Move anything stored near the system
- Name a contact who can let us in at the agreed time
Getting a quote
The quickest way to a quote is to send pictures: the system from a couple of angles, plus any access panels or hatches. Add the site type and your opening hours, and we can price many jobs without a visit.
Related advice
How we handle AHU cleaning in Great Bookham
A cooling coil drips condensate into a tray that should drain away. When the drain blocks, water sits there and the tray turns slimy, right in the path of the air going into the building. Clearing and cleaning the tray is central to every AHU clean. The work covers heating and cooling coils, supply and extract fans and dampers and louvres, and common reasons people get in touch are intake sections clogged with outdoor debris and plant that needs cleaning after a refit.
Smaller buildings around Great Bookham often keep their ventilation units in a roof void or plant cupboard, where they’re easy to forget. Filters, coils and drain trays need attention whatever the size of the unit.
The paperwork matters as much as the work. You get a written report with pictures after every visit, covering the work done, any areas we couldn’t access and a recommended next date. File it in your maintenance log so it’s ready for an insurer, fire officer or EHO.
- Place
- Great Bookham (KT23, KT22)
- Wider area
- Surrey
- Records
- Photo report after each visit
- Quote
- A fixed quote up front
- Working hours
- Nights, weekends or holidays to suit you
- Telephone
- 0345 646 2711
- Checked
- 30 October 2026
Ventilation in Great Bookham buildings
Food Standards Agency data includes about 6 schools, colleges and universities across Great Bookham and its immediate surroundings (about a mile and a half). Where buildings like these have air handling units, filters, coils and drain trays need regular attention. Great Bookham is about 19 miles from central London, well within the area we cover across London and the South East. Visits are booked around your hours, evenings and weekends included. Headley Court is the nearest hospital, about 4.1 miles east of Great Bookham. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too.
Headley Court, about 4.1 miles east, is the nearest hospital to Great Bookham, and healthcare sites of every size need their supply air kept clean. Wherever a school like The Dawnay School has ducted ventilation, a half-term visit keeps the work out of lesson time. If you manage shops or offices close to Bookham station, a TR19® Air inspection shows whether the ductwork needs cleaning.
Great Bookham is about 6 miles south-west of Epsom, in Surrey. We provide AHU cleaning for commercial premises of every kind in Great Bookham and the rest of Surrey. We cover 395 places across Surrey, large and small. You can also see our page for Guildford, roughly 9 miles from Great Bookham.
Work in KT23 and KT22 follows the same survey, fixed quote and written report as everywhere else we cover. You will find streets such as High Street, Church Road and Beeches Drive, and we cover them all for AHU cleaning. Neighbouring places we cover for AHU cleaning include Fetcham (1 mile north-east), Little Bookham (1 mile south-west), Leatherhead (2 miles north-east), Mickleham (2 miles east) and Westhumble (3 miles south-east). Further out, we also cover Guildford (9 miles west), Woking (9 miles west), Epsom (6 miles north-east), Horley (11 miles south-east), Redhill (9 miles east) and Ewell (7 miles north-east).
Around Great Bookham
Around Great Bookham, our work takes us to kitchens and buildings near Howard of Effingham School, Manor House School and The Old Crown pub. For rail, the closest station is Bookham station, about 0.8 miles north-west of the centre. Well-known places in the area include Headley Court (4.1 miles east) and Betchworth Castle (4.4 miles south-east). Not far away are Box Hill and Jubilee Wood.
Towns and villages near Great Bookham
More services for Great Bookham
Keeping the system healthy
After the visit, a few habits help the work last:
- Check the drain tray is emptying during routine visits
- Clear leaves and litter away from the intake
- Note any water around the unit or leaks below it
- Keep the certificate and photo report with the plant records
Photos in the report cover the filters, coils, drain tray, fan and casing, and note any part we couldn’t get to. Any defects we noticed, like a leaking tray or damaged lining, are listed.
Keep the unit’s doors and panels in working order. If a section is hard to get into, it tends not to get checked.
Great Bookham questions
Can a school’s ventilation in Great Bookham be done out of term time?
Yes, and it’s the easiest time to do it. Around Great Bookham, the Food Standards Agency lists about 6 schools and colleges with registered kitchens within a mile and a half or so. You can phone us on 0345 646 2711 or use the quote form with the dates the site is empty.
Do you work overnight in Great Bookham?
Yes, evening, overnight and weekend work is normal for us. It means the site in Great Bookham keeps running as normal. When you give us a ring on 0345 646 2711 or send us an email, mention when the site is quiet.
How much does AHU cleaning cost?
Size, condition, access and working hours all affect the cost. Ask us for a fixed quote, typically ready within one working day.
Which parts of an air handling unit do you clean?
Everything inside the unit that air passes over, from the intake and filters through the coils and fan to the outlet. You get a photo report showing each part before and after.
Which accreditations do you hold?
We’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
Do you look at the system first?
Yes, every time. We diagnose before we treat: the survey tells us what the system needs and how to reach it, and the quote is based on that.
Do you have a 24/7 line?
Yes, day and night, every day of the year. Our office is open from 8am to 6pm on weekdays, and the emergency line covers the rest.
What do you need from me for a quote?
Just the basics: the address, the site type, your opening hours and how we reach the system. Photos and the last report help too. Then give us a ring on 0345 646 2711, or email photos.
Leave it or put it right?
Dirty coils and fans make the unit strain to move the same air. That means more wear on the motor and rooms that feel less fresh, and a clean on your terms beats a breakdown on nobody’s. Even a site near Great Bookham that is only busy part of the week needs its system checked on a schedule.
What you pay reflects the actual work. That’s why we survey first, from pictures or on site, and the price is agreed before work begins.
Why Great Bookham businesses choose us
- One contact for all your sites in London and the South East
- Photo reports with every job
- In business since 2009
- Fixed quotes, normally within one working day
Read how cleaning jobs are priced or how to check a contractor.
What affects the cost of AHU cleaning
There’s no set price list, because no two systems are the same. What we look at:
- Site rules, permits and inductions
- How big the system is
- Access, including roofs, risers and ceiling voids
- How many systems or sites are involved
Every site is different, so each one gets its own fixed quote. The size of the job, how we reach it, its condition and the working hours all make a difference.
Asking for a quote
A few details help us quote accurately. With your enquiry, please include:
- Close-ups of filters, grilles, hatches or access panels
- Your opening hours and when the area is out of use
- The paperwork from the last visit, if you have it
- How we’d reach plant on a roof or in a plant room
Every quote begins with a look at the system, either from photos and details you send or from a site visit. After that, you get a fixed price for the work, before we start.
What your team can do, and what needs us
Day-to-day cleaning is something your team can do: wiping canopies, washing grease filters and recording it in a log. Inside the ducts, risers and fan is specialist work, and that’s where we come in.
A few tasks are always specialist work: entering ducts, working on fans, testing dampers and taking grease readings call for the right kit, training and safe access. That’s our job.
Part by part
Drain trays
The drain tray collects water from the cooling coil. Standing water and slime are removed and the outlet is checked.
Heating and cooling coils
Dirt on a coil slows the air and makes it harder for the coil to heat or cool. A clean gets air moving through the coil properly again.
What a clean won’t put right
A few issues sit outside what this work can do:
- Mechanical faults with motors, belts or bearings
- Problems with the unit’s controls or sensors
- Leaking heating or cooling coils
If you are not sure, just phone us on 0345 646 2711 or use the quote form and we will give you a straight answer before booking.
Parts of the system we cover
- Dampers and louvres
- Filter sections
- Internal panels
- Heating and cooling coils
- Supply and extract fans
- Drain trays