Surrey · Air handling unit cleaning

Air handling unit cleaning in Hoe, Surrey

One call covers cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Hoe, from survey to sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.

  • Air handling units with blocked filters
  • Plant that has been serviced but not cleaned
  • Debris and leaves in the fresh air intake

AHU cleaning across Hoe

What a clean won’t put right

An honest diagnosis matters more to us than a booking, so here’s what AHU cleaning won’t do:

  • Ventilation that was badly designed in the first place
  • Building management system faults
  • The supply and extract ducts, quoted separately

If in doubt, give us a ring on 0345 646 2711, or send details by email and we’ll say what we think before booking.

Parts of the system we cover

  • Heating and cooling coils
  • Filter sections
  • Internal panels
  • Supply and extract fans
  • Dampers and louvres
  • Drain trays

AHU cleaning in Hoe

Our AHU cleaning covers sites in Hoe and the rest of Surrey, in buildings such as offices, schools, healthcare sites and shops. Units are cleaned when the site can spare them, often evenings, overnight or weekends. Common call-outs are for coils clogged with dust and debris and units that have only ever had filter changes, on dampers and louvres, heating and cooling coils and supply and extract fans.

Somewhere as small as Hoe, ducted ventilation is usually limited to a school, a care home, a surgery or a converted business building, wherever there is one, but those that do need it inspected and cleaned like any other.

We are 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’ve been trading since 2009.

Location
Hoe (GU5)
Wider area
Surrey
Reporting
Report and pictures after the visit
Quote
A fixed price before any work starts
Hours
Overnight and weekend work, 24/7 emergency callout
Call
0345 646 2711
Last updated
30 October 2026
The Duct Doctor team standing beside their branded white and blue vans

Keeping the system healthy

Think of this as the after-treatment advice, short and simple:

  • Don’t ignore odours coming through the grilles
  • Do not store bins or materials near the intake
  • Report water on the plant room floor
  • Stick to the filter change plan

Keep filter changes on schedule between cleans, as that does more than anything to keep the unit clean. Log every change so it’s easy to see when the next is due.

Regular inspection under TR19® Air shows when cleaning is due, rather than waiting for a problem.

Common questions in Hoe

Can the work in Hoe be done at night or at weekends?

Yes. We work evenings, overnight and at weekends. The work in Hoe can fit around your hours. Tell us your opening hours when you ask for a quote.

Can ventilation in schools around Hoe be cleaned out of term?

Yes, and it’s the easiest time to do it. The FSA’s register shows about 2 schools and colleges with food registrations within roughly a mile and a half of Hoe. Send us your term dates when you call 0345 646 2711 or drop us a line, and we’ll fit the work in.

How long will the unit be out of action?

It takes half a day to a full day per unit, with large plant planned over several shifts. Size, layout and how dirty it is decide the rest, and the quote will give you a clear idea.

Do you look at the system first?

Yes. We always survey first, either from pictures and details you send or on a site visit. Then you get a fixed quote.

How much notice should we give?

The more notice, the better, particularly for night and weekend visits. Quotes usually come back within one working day, and there’s a 24/7 line for emergencies.

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 repair air handling units?

Motors, belts, controls and coils that need repair are a job for your maintenance contractor. We’ll flag anything we notice during the clean.

What types of premises do you cover?

Any site with a kitchen or a ventilation system to look after, from a single café to a large school. We work with hotels, schools, care homes, offices, retail and leisure sites.

What affects the cost of AHU cleaning

We don’t publish a price list, because no two systems are the same. What we look at:

  • How big the system is
  • The condition of the system
  • Site rules, permits and inductions
  • A single visit or a regular plan

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 work begins, so there are no surprises.

Asking for a quote

Before you ask for a quote, gather:

  • The paperwork from the last visit, if you have it
  • Any access panels or hatches you can see
  • Anything you’ve noticed, such as smells, noise, drips or poor airflow
  • Where the site is and what kind of site it is

Here’s what helps us quote: where the site is, what it is and its opening hours, pictures of the system and the last certificate or report, if there is one. Then ring 0345 646 2711 or use the quote form.

Signs you need AHU cleaning in Hoe

Mechanical servicing keeps a unit running, but it does not always include cleaning the inside. So a unit can be well maintained and still dirty.

Look out for any of the following:

  • Intake sections clogged with outdoor debris
  • Dirty coils holding back the airflow
  • Filters that are clogged or overdue
  • Units that have only ever had filter changes

Healthcare ventilation, from large hospitals like St. Luke’s Hospital (about 5.6 miles north-west) to small clinics, depends on clean filters, coils and ducts.

Questions to ask before booking

  • Which accreditations they hold, and whether you can check them
  • Exactly which parts of the system are covered
  • When the next visit should be, and why
  • Whether VAT is included

Choosing a duct cleaning contractor

Hoe buildings and their air

Hoe’s nearest hospital, St. Luke’s Hospital, is about 5.6 miles north-west. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too. We cover Hoe, about 25 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.

Around Hoe, as anywhere, ventilation cleaning begins with an inspection.

Hoe is about 5 miles west of Dorking, in Surrey. Sites in Hoe 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. 395 places in Surrey are on our list, large and small. We also work in Guildford, about 7 miles from Hoe.

AHU cleaning in GU5 is surveyed, quoted and booked the same way as anywhere else. Whether your site is on Fulvens, Pursers Lane and Crest Hill or anywhere close by, our technicians can take on the work. If your site is just outside Hoe, we cover Sutton Abinger (1 mile east), Abinger Hammer (1 mile north), Gomshall (1 mile north), Abinger (1 mile east) and Little London (2 miles west). Within a short drive, we also cover Guildford (7 miles north-west), Woking (10 miles north-west), Camberley (15 miles north-west), Epsom (12 miles north-east), Horley (12 miles east) and Redhill (12 miles east).

Local landmarks in Hoe

Locally, jobs take us to businesses close to Colekitchen Down and The Volunteer pub, among other places. Hoe’s nearest station is Gomshall station, roughly 1.1 miles north of the centre. A little further out are Mesolithic Museum (1.5 miles east) and St. Luke’s Hospital (5.6 miles north-west). Open spaces near Hoe include Silent Pool and Leith Hill.

Map of Hoe © OpenStreetMap contributors

Different parts, different methods

Rooftop and plant room units

Units on roofs and in plant rooms can be awkward to reach. We plan safe access as part of the survey so the quote reflects it.

Drain trays

A tray that does not drain becomes a pool of stagnant water in the airstream. We clean it and note if the slope or the drain needs attention.

How the visit works

At the end of the visit, someone from your team can look over the work with us. Anything we couldn’t reach or that needs attention is pointed out there and then, and the same goes into the written report. The visit takes from a few hours for a compact unit to a day or more for a large one. A few pictures of the system help us make the most of a visit to a place like Hoe.

  1. First we agree when the unit can be switched off, including evenings or weekends.
  2. Before cleaning, each section is photographed.
  3. We work through the unit from the intake to the outlet.
  4. We finish with the fan section and the drain tray.
  5. We take after pictures and issue the certificate and report.

Before we arrive

  • Clear the space around the work
  • Tell us where we can park and unload
  • Dig out any earlier paperwork for the system

Ask for a quote

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 so you know the cost before any work starts.

Get a quick quote

Related advice

Landlords, agents and facilities managers

Where a tenant occupies the premises but the landlord owns the building, the lease normally sets out who maintains what. We are happy to deal with either side and send the paperwork to whoever needs it.

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. Where responsibility is shared, records matter even more.

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