Surrey · Air handling unit cleaning
AHU Cleaning in Grayshott
AHU cleaning in Grayshott from ventilation hygiene specialists trading since 2009. Evenings, overnight and weekends, plus a 24/7 emergency line.
- Air handling units with blocked filters
- Dirty fans and fan housings
- Stale or musty smells from the ventilation
What affects the quote in Grayshott
There’s no set price list, because sites vary so much. What we look at:
- Access, including roofs, risers and ceiling voids
- Travel, parking and unloading
- How many systems or sites are involved
- The times the site is available
Putting the work off seldom saves money. Problems in a system tend to grow, which can make the next visit longer. If you’re not sure what’s needed, phone us on 0345 646 2711, or email photos and we’ll give you an honest view and a fixed quote.
What we need to know
Photos and a few facts are often enough to price the work. Useful things to send:
- Any access panels or hatches you can see
- Wide photos of the system and the area around it
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- Problems your staff have spotted
Some systems can be priced from pictures; others need a survey. Big or complicated sites, and systems that are hard to see in pictures, get a survey first. Either way, the quote is fixed before any work is booked.
AHU cleaning in Grayshott, done properly
Heating and cooling coils trap dust that gets past the filters. A coated coil restricts airflow and makes the unit work harder. Coils are cleaned carefully, with methods chosen so the fins aren’t flattened. Typical jobs include air handling units due a clean after building work and coils clogged with dust and debris, across drain trays, internal panels and dampers and louvres.
In a place like Grayshott, air handling units are often tucked into roof spaces or small plant rooms, where they’re easy to forget. Every unit, large or small, has filters, coils and a drain tray to keep clean.
The report is your system’s health record: dated, with photos, and showing what was done. Grease extract cleans are also certificated to TR19® Grease through the BESCA VHE portal and sits alongside the report.
- Where
- Grayshott (GU26)
- Wider area
- Surrey
- Reporting
- Photo report after every visit
- Quote
- A fixed price before we start
- Hours
- Evenings, overnight and weekends; 24/7 emergencies
- Call
- 0345 646 2711
- Reviewed
- 30 October 2026
Leave it or put it right?
Cleaning a unit while it only has light dust is quick. Leave it for years and dirt bakes onto coils and casings, especially where there’s been moisture. A site near Grayshott that has to close at short notice is hard to cover for.
Whatever the type of site, the quote works the same way: the size of the job, access, condition and working hours. Ask for a fixed quote and we’ll explain each part.
Why choose Duct Doctor in Grayshott
- Fixed quotes from a survey or pictures
- Survey first, then a fixed quote
- Full insurance on every job
- A single point of contact for sites across the South East and London
What happens on the day
There are three stages on the day: getting the area ready, doing the work and signing it off. Getting ready means protecting surfaces and switching off what needs to be off, and the sign-off is a written report with pictures. The middle part takes longest, which takes from a few hours for a compact unit to a day or more for a large one. Because the survey comes first, a visit to Grayshott can typically be finished without a second trip.
- We agree a shutdown window that suits the building.
- We take before photos of each section of the unit.
- We work through the unit from the intake to the outlet.
- The fan and drain tray are cleaned and the drain checked.
- After pictures are taken and the certificate issued.
How to prepare
- Mention any sign-in, permit or induction we need
- Let us know how we reach the system, including roofs, risers and plant rooms
- Move anything stored near the system
Getting a quote
We don’t publish a price list, because no two systems are the same. We look at your system first, from photos or on a visit, then send a fixed quote. To start, call 0345 646 2711, or send details by email.
Advice
What staff can safely do
Your own staff can handle the daily basics: wiping down canopy surfaces, cleaning filters and keeping a simple log. Inside the ducts, risers and fan is specialist work, and that is where we come in.
When your team notices a problem between visits, such as dripping grease, a noisy fan, a smell or a filter that won’t come clean, they should report it rather than try to fix it. We can diagnose it and quote.
Aftercare tips
No system stays clean for ever, but care slows the build-up. Our tips:
- Clear leaves and litter away from the intake
- Note any water around the unit or leaks below it
- Stick to the filter change plan
- Check the drain tray is emptying during routine visits
If the ductwork hasn’t been cleaned, consider it next. Cleaning the unit and ducts together gives the best result, and we can survey both.
Don’t let leaves, litter or stored materials build up near the fresh air intake. What’s near the intake ends up in the unit.
Towns and villages near Grayshott
Also in Grayshott
When it’s something else
AHU cleaning cannot fix everything, and we’d rather say so up front. It does not solve:
- Dirty ducts beyond the unit itself
- Controls and BMS settings that run the unit
- Coils that are corroded or leaking and need replacing
If in doubt, call us on 0345 646 2711 or drop us a line and we’ll say what we think.
Where we work
- Filter sections
- Internal panels
- Drain trays
- Supply and extract fans
- Heating and cooling coils
- Dampers and louvres
Landlords, agents and facilities managers
We also work for facilities teams across offices, schools and healthcare in Grayshott and across Surrey. Work can be phased by floor, building or site around the people who use them.
Keeping records across a portfolio is half the battle. Each visit produces a dated report with pictures, ready to show insurers, fire officers or EHOs.
What AHU cleaning looks like in Grayshott
Food Standards Agency data includes about 10 hospitals, care homes and childcare premises in and around Grayshott, up to about a mile and a half out. Buildings like these often rely on mechanical ventilation, which TR19® Air covers. The nearest hospital to Grayshott is Haslemere and District Hospital, about 2.4 miles south-east. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes. Grayshott is about 39 miles from central London, well within the area we cover across London and the South East. Evening, overnight and weekend visits are all possible.
School buildings such as Grayshott Church of England Controlled Primary School are typically done in the holidays, so classrooms are not disturbed. Healthcare buildings such as Haslemere and District Hospital, about 2.4 miles south-east, depend on their ventilation; if you manage a surgery, clinic or care home near Grayshott, yours matters too.
Grayshott is about 7 miles south of Farnham, in Surrey. Grayshott gets the same approach as every site we work on: a survey first, a fixed quote, work timed around your hours and a report with photos. Our area takes in 395 places across Surrey, from busy centres to quieter spots. Guildford is in our area too, about 12 miles from Grayshott.
Every address in GU26 is covered for AHU cleaning, from the main roads to the quietest streets. Whether your site is on Church Lane, Vale Wood Lane and Avenue Road or anywhere close by, we can help. Nearby, we also carry out AHU cleaning in Hindhead (1 mile east), Nutcombe (1 mile south-east), Beacon Hill (1 mile north), Whitmoor Vale (1 mile north-west) and Green Cross (2 miles north). We also work in nearby towns such as Guildford (12 miles north-east), Camberley (15 miles north), Farnham (7 miles north), Frimley (14 miles north), Cranleigh (12 miles east) and Ash (9 miles north).
Near you in Grayshott
Locally, jobs take us to businesses close to The Fox & Pelican pub, Woolmer Hill School and St Edmund's School, among other places. The closest station to Grayshott is Haslemere station, about 2.2 miles south-east. Nearby you will also find Haslemere and District Hospital (2.4 miles south-east). The countryside around Grayshott includes Lynchmere Commons and Gibbet Hill.
Grayshott questions
Can a school’s ventilation in Grayshott be done out of term time?
Yes. Half-terms and the summer break are the natural time for school work. Food Standards Agency records list about 2 schools, colleges and universities with registered kitchens within about a mile and a half of Grayshott. Send us your term dates when you call 0345 646 2711, or email photos, and we will fit the work in.
Can you work in Grayshott outside opening hours?
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.
Do you work in Grayshott?
Yes. We work in Grayshott and across Surrey, as part of our work across South East England and London. To book, phone us on 0345 646 2711 or use the quote form.
Which accreditations do you hold?
We hold CHAS, SafeContractor and ISO 9001, alongside BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. Vent Hygiene Elite is run by BESCA and independently audited.
Is a quote from pictures possible?
Yes, where the pictures show enough. If not, a site survey comes first, and the quote follows that.
Can we book visits on a schedule?
Yes. Scheduled maintenance plans are part of what we do, with visits at the interval your system needs. The report from each visit recommends the next date.
Do you clean the ductwork as well?
Yes. We clean supply and extract ductwork to TR19® Air as well. Cleaning the unit and ducts together often makes sense, and we can quote for both.
How long will the unit be out of action?
As a guide, it takes anything from half a day for one small unit to several shifts for a plant room full of them. The shutdown is planned to fit, including evenings or weekends.