Surrey · Air handling unit cleaning
Air handling unit cleaning in Lightwater, Surrey
Need AHU cleaning in Lightwater? We survey first, send you a fixed quote and work around your opening hours, finishing with a written report and pictures.
- Intake sections clogged with outdoor debris
- Filters that are clogged or overdue
- Fan sections that haven’t been cleaned in years
How we handle AHU cleaning in Lightwater
Our AHU cleaning covers sites in Lightwater 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. We’re often asked to deal with intake sections clogged with outdoor debris and dirty coils holding back the airflow, on internal panels, filter sections and drain trays.
Around a place like Lightwater, ventilation systems tend to be in schools, surgeries, care homes and workplaces. Even a small system collects dust in its ducts and filters.
We’re 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, and we’ve been trading since 2009.
- Place
- Lightwater (GU18, GU19)
- Region
- Surrey
- Reporting
- Written report with photos
- Price
- A fixed price before work begins
- Working hours
- Out of hours as standard, 24/7 emergency line
- Telephone
- 0345 646 2711
- Updated
- 30 October 2026
How we price AHU cleaning
There’s no set price list, because no two systems are the same. The quote depends on:
- Whether several sites go on one quote
- Site rules, permits and inductions
- A single visit or a regular plan
- How big the system is
Whatever the type of site, the quote works the same way: how much there is, how we reach it, what state it’s in and when we can work. Call for a fixed quote and we will go through it with you.
What to send for a quote
The more you tell us, the more accurate the quote. With your enquiry, please include:
- Where the site is and what kind of site it is
- Wide photos of the system and the area around it
- Your opening hours and when the area is out of use
- Problems your staff have spotted
Here’s what helps us quote: where the site is, what it is and its opening hours, a few pictures and the last certificate or report, if there is one. Then call 0345 646 2711 or email us.
What we do, step by step
Everything the job needs comes with us, from protective sheeting to tools and access equipment. You only need to give us clear access and switch off what needs to be off. On site, the work takes a single shift for a typical unit, longer for large or heavily soiled ones. We plan the journey to Lightwater and bring what the job is likely to need.
- We look at the unit and the plant area during the survey.
- 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
- Let us know how we reach the system, including roofs, risers and plant rooms
- Let us know when the site is closed or quiet
- Find the previous report, if there is one
Get a fixed quote
We do not publish a price list, because no two systems are the same. Instead, we look at your site first, from pictures or a survey, and then send you a fixed quote. To start, call us on 0345 646 2711, or send details by email.
Advice
Towns and villages near Lightwater
Other services in Lightwater
Different parts, different methods
Drain trays
The drain tray collects water from the cooling coil. We clear standing water, clean out slime and check the outlet is draining.
Heating and cooling coils
A dirty coil holds back the air and makes heating and cooling less effective. Cleaning restores the open path through the fins.
Questions from Lightwater
Do you work at weekends in Lightwater?
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.
Can you clean school ventilation in Lightwater during the holidays?
Yes, and it’s the easiest time to do it. There are about 10 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Lightwater. Send us your term dates when you call 0345 646 2711 or email us, and we’ll fit the work in.
Do you have a 24/7 line?
Yes, any time. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line and we’ll talk you through the next steps.
How long does an AHU clean take?
Expect it to take from a few hours for a compact unit to a day or more for a large one. The unit’s size and condition make the biggest difference, and the quote will give you a clear idea.
What do you clean inside the unit?
The main parts are the filters, coils, drain tray, fan and inside of the casing. The survey confirms what’s in your unit before we quote.
Do you work with multi-site operators?
Yes. We work across South East England and London, so we can schedule a run of sites on one programme. Each site gets its own report and pictures.
What accreditations do you have?
CHAS, SafeContractor, ISO 9001 and BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. We’ve been trading since 2009 and we’re fully insured.
How much does AHU cleaning cost in Lightwater?
It depends on the site, so we quote each one individually. To get one, give us a ring on 0345 646 2711 or email us and tell us about the site and its opening hours.
Honest limits
To be straight with you, some problems need a different fix:
- Mechanical faults with motors, belts or bearings
- Building management system faults
- Dirty ducts beyond the unit itself
If in doubt, phone us on 0345 646 2711, or email photos and we’ll say what we think before you book.
What the work covers
- Internal panels
- Dampers and louvres
- Heating and cooling coils
- Drain trays
- Filter sections
- Supply and extract fans
Lightwater buildings and their air
Going by the FSA’s register, there are about 10 schools, colleges and universities and about 6 hospitals, care homes and childcare premises serving food in and around Lightwater, 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. Lightwater is about 27 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. Brookwood Hospital is the nearest hospital, about 3.3 miles south-east of Lightwater. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too.
Brookwood Hospital, about 3.3 miles south-east, is the nearest hospital to Lightwater, and healthcare sites of every size need their supply air kept clean.
Lightwater is about 3 miles east of Camberley, in Surrey. For AHU cleaning in and around Lightwater, please give us a ring on 0345 646 2711 or drop us a line for a fixed quote. Our area covers London and the South East, including Lightwater. Our Surrey coverage runs to 395 places, and Lightwater is one of them. We also work in Guildford, about 8 miles from Lightwater.
Every address in GU18 and GU19 is covered for AHU cleaning, from busy streets to back roads. You’ll find streets such as Ambleside Road, Ridgeway Close and Shrublands Drive, and we cover them all for AHU cleaning. Other places close to Lightwater include Donkey Town (1 mile south-east), Bagshot (1 mile north-west), Windlesham (1 mile north-east), Lucas Green (2 miles south-east) and West End (2 miles south-east). Larger places within reach include Guildford (8 miles south-east), Woking (5 miles south-east), Camberley (3 miles west), Farnham (11 miles south-west), Egham (8 miles north-east) and Walton-on-Thames (12 miles east).
Near you in Lightwater
In Lightwater, that means kitchens and buildings near Gordon's School and Brentmoor Heath and the streets around them. Lightwater’s nearest station is Bagshot station, about 1.3 miles north-west of the centre. Nearby you’ll also find Brookwood Hospital (3.3 miles south-east) and The Museum of The National Rifle Association (2.7 miles south). Not far away are Brookwood Lye.
Aftercare tips
Once we have finished, these simple steps help:
- Keep the area around the fresh air intake clear
- Plan the next inspection before the last report gets filed away
- Stick to the filter change plan
- Report stiff or damaged access doors
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 area around the intake clear. What’s near the intake ends up in the unit.
When to call us in Lightwater
It matters for two reasons: air quality, since the unit feeds occupied rooms, and performance, since dirt makes it strain. For anyone working, learning or staying in a building in Lightwater, that is air they breathe for hours at a time.
What we are most often called out for:
- Fan sections that haven’t been cleaned in years
- Blocked condensate drains and slimy trays
- Stale or musty smells from the ventilation
- Leaves and litter drawn into the unit
Classrooms and halls at schools such as Hammond School are easiest to work in when pupils are away.
Before you book anyone
- How they set the interval to the next visit
- If the quote is a fixed price or an estimate
- What paperwork you get at the end
- Whether they’re fully insured
Why act early in Lightwater
A light clean now is simpler than a heavy one later. Years of build-up make the job longer and harder, especially where there’s been moisture. It’s easy to lose track of when the work was last done on a quieter site.
Leaving it longer rarely makes the work cheaper. Build-up, wear and faults tend to get worse, not better, which can make the next visit longer. If you are unsure, give us a ring on 0345 646 2711, or email photos and we will give you an honest view and a fixed quote.
Why choose Duct Doctor in Lightwater
- Fully insured
- A fixed price before any work starts
- A single point of contact for sites across the South East and London
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease