Surrey · Air handling unit cleaning

Air handling unit cleaning in Leatherhead, Surrey

For air handling unit cleaning in Leatherhead, one call is all it takes: survey, fixed quote, work and sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.

  • Dirty filters cutting the airflow
  • Rooms that smell stuffy when the system runs
  • Dirty coils holding back the airflow

AHU cleaning near Leatherhead

AHU cleaning for kitchens and businesses in Leatherhead

We clean the parts of the unit where dirt and moisture gather: filters, coils, drain trays, fans and the internal panels. Every clean comes with a TR19® certificate and before and after photos in a report. If you have rooms that smell stuffy when the system runs and debris and leaves in the fresh air intake, we can put it right.

In Leatherhead, ventilation in schools and offices is cleaned when the building is quiet: evenings, weekends or school holidays.

We are CHAS and SafeContractor accredited, we hold ISO 9001 and we’re fully insured. On top of that, we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, trading since 2009.

Extract duct interior shown dirty and then cleaned back to bare metal
Where
Leatherhead (KT22)
Region
Surrey
Paperwork
Photo report after each visit
Quotes
A fixed price before work begins
Hours
After hours by arrangement; emergencies any time
Telephone
0345 646 2711
Page updated
30 October 2026

What staff can safely do

For ventilation and air handling systems, in-house care is mostly about checks: clear grilles, a log of filter changes and reporting anything odd. Cleaning inside ducts and units is specialist work.

Logging matters as much as cleaning. A dated log of in-house cleaning and checks shows an inspector that the system is looked after between visits, alongside our reports.

Ventilation in Leatherhead buildings

Food Standards Agency data includes about 15 schools, colleges and universities and about 11 care, childcare and hospital premises in and around Leatherhead, up to about a mile and a half out. Classrooms, bedrooms and care spaces are often served by ducted air, and that ductwork collects dust over time. About 17 miles out from central London, Leatherhead is part of the South East area we work across. The visit is fixed around your opening hours, not ours. The nearest hospital to Leatherhead is Headley Court, about 2.2 miles east. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale.

If you manage shops or offices close to Leatherhead station, a TR19® Air inspection shows whether the ductwork needs cleaning. Healthcare ventilation, from large hospitals like Headley Court (about 2.2 miles east) to small clinics, depends on clean filters, coils and ducts.

Leatherhead is about 4 miles south-west of Epsom, in Surrey. Whether your site is in the middle of Leatherhead or further out, AHU cleaning is available to all kinds of commercial premises, from small sites to large estates. Our area takes in 395 places across Surrey, large and small. Guildford is in our area too, about 11 miles from Leatherhead.

We cover every part of KT22 for AHU cleaning and the streets around it. Streets in the area include High Street, Church Road and Station Road, all of which we cover for AHU cleaning. Main roads around Leatherhead include the A24 and A245, so getting to you is simple for evening and night visits. Other places close to Leatherhead include Fetcham (1 mile west), Mickleham (2 miles south), Great Bookham (2 miles south-west), Westhumble (3 miles south) and Little Bookham (3 miles south-west). We also work in nearby towns such as Guildford (11 miles west), Woking (11 miles west), Epsom (4 miles north-east), Horley (11 miles south-east), Redhill (8 miles south-east) and Ewell (5 miles north-east).

Near you in Leatherhead

In Leatherhead, that means kitchens and buildings near St Andrew's Catholic School, St Andrew's Catholic School and Duke's Head Public House, among other places. There’s a railway station in Leatherhead itself: Leatherhead station. A little further out are Walton on the Hill (3.5 miles east) and Headley Court (2.2 miles east). For a walk, there’s Claremont Lake and Jubilee Wood.

Map of Leatherhead © OpenStreetMap contributors

Between visits

After the visit, a few habits help the work last:

  • Store the TR19 paperwork where auditors can find it
  • Watch for drips or damp patches near the plant
  • Keep filter changes on time and recorded
  • Report musty smells from the vents right away

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.

Regular filter changes are the best protection an AHU has. Overloaded filters let more dirt through to the coils and fan.

Leatherhead questions

Do you offer AHU cleaning in Leatherhead?

Yes. Our area runs across London and the South East, Leatherhead included. Get in touch with the details and we will arrange a survey.

Do you work at weekends in Leatherhead?

Yes. We work evenings, overnight and at weekends. The site is handed back ready to open. Tell us your opening hours when you ask for a quote.

Is there a report after cleaning?

Yes, a TR19® certificate and a photo report. It includes a recommended date for the next check.

How often should an air handling unit be cleaned?

That’s set by inspection, in line with TR19® Air. Units in heavy use or in sensitive buildings may need attention more often.

What’s TR19?

TR19® is BESA’s specification for ventilation hygiene. TR19® Grease, a standalone specification since 2019, covers grease in kitchen extract systems, and TR19® Air covers general supply and extract systems.

Can you fix a faulty AHU?

Mechanical repairs to the unit are for your HVAC maintenance contractor. We clean the unit and report anything we see that needs attention.

How long will the unit be out of action?

Cleaning takes one overnight shift for many single units, with bigger plant phased. Bigger units can be phased, so phone us on 0345 646 2711, or email photos to talk it through.

Can you look after several sites?

Yes. We work across South East England and London, so sites at different addresses can be planned together on one programme. Every site has its own report.

Managing agents and facilities teams in Leatherhead

Keeping records across a portfolio is half the battle. Each visit produces a dated report with photos, ready to show insurers, fire officers or EHOs.

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.

What happens on the day

There’s very little for your team to do on the day. Someone lets us in at the agreed time and shows us where everything is, and we take it from there. Before we leave, the area is tidied and the paperwork follows. We arrive in Leatherhead once you’ve closed and leave the site ready for the morning.

  1. First the unit is surveyed, from pictures or a visit, and the scope agreed.
  2. We arrange the shutdown with your staff and sheet the area.
  3. Filters, coils, fan section and casing are cleaned in turn.
  4. Standing water and slime come out of the tray and the drain is checked.
  5. A TR19® certificate and photo report follow the clean.

Getting ready for the visit

  • Mention any sign-in, permit or induction we need
  • Arrange a key holder or contact on site
  • Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas

Getting a quote

Quotes are quick. Send a few details and pictures, and we typically reply with a fixed quote within one working day. Where a survey is needed, we arrange a time that suits the site.

Get a price

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How we price AHU cleaning

The survey tells us what the work involves. We look at:

  • Travel, parking and unloading
  • How many systems or sites are involved
  • The condition of the system
  • The size of the system

Every site is different, so we price each one individually. Size, access, the condition of the system and when we can work all play a part.

Asking for a quote

A few details help us quote accurately. With your enquiry, please include:

  • Where the plant sits or the system leaves the building, such as a roof or outside wall
  • Anything you’ve noticed, such as smells, noise, drips or poor airflow
  • Your last certificate, test record or report
  • When the site is open and when it’s quiet

For a fixed quote, phone us on 0345 646 2711, or email photos 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 normally have a quote within one working day.

When to call us in Leatherhead

An AHU’s intake draws in outdoor air and everything in it: dust, pollen, leaves and debris. The intake section and first filters take the brunt, and the finer material travels on.

Common reasons sites call us include:

  • Plant that has been serviced but not cleaned
  • Condensate trays that won’t empty
  • Rooms that smell stuffy when the system runs
  • Dust built up on fan impellers

Classrooms and halls at schools such as Leatherhead Trinity School and Children's Centre are easiest to work in when pupils are away.

What to look for in a quote

  • What records you will receive afterwards
  • Which accreditations they hold, and whether you can check them
  • What’s included in the scope, part by part
  • Whether VAT is included

How to choose an extract cleaning contractor

What AHU cleaning can’t fix

AHU cleaning cannot fix everything, and we’d rather say so up front. It does not solve:

  • Building management system faults
  • Coils that are corroded or leaking and need replacing
  • Airflow problems caused by the system’s design

Not sure which it is? You can give us a ring on 0345 646 2711 or drop us a line and we will tell you honestly before booking.

What the work covers

  • Filter sections
  • Supply and extract fans
  • Drain trays
  • Internal panels
  • Heating and cooling coils
  • Dampers and louvres
BESCA Vent Hygiene EliteMember, cleaning to BESA TR19® Grease
CHAS · SafeContractorISO 9001 and fully insured
Certificate and photo reportWith every clean
24/7 emergency calloutEvenings, nights and weekends
Since 2009South East England and London