Surrey · Air handling unit cleaning
Ottershaw AHU cleaning
Our technicians work in Ottershaw on AHU cleaning. Out-of-hours visits, a fixed quote and a written report with pictures on every job.
- Units that have only ever had filter changes
- Filters that are clogged or overdue
- Rooms that smell stuffy when the system runs
Questions from Ottershaw
Can you work in Ottershaw outside opening hours?
Yes. We work evenings, overnight and at weekends. That way a site in Ottershaw does not have to lose a day’s trading. Just phone us on 0345 646 2711, or send details by email with your opening times and we’ll plan around them.
Can you clean school ventilation in Ottershaw during the holidays?
Yes, out-of-term visits are normal for schools. With about 10 schools and colleges on the FSA’s register within roughly a mile and a half of Ottershaw, it pays to plan holiday dates ahead. Send us your term dates when you call 0345 646 2711, or send details by email, and we will fit the work in.
What should I send you?
The site address, the type of premises and your opening hours, along with a few pictures and any previous report.
Will the ventilation be off while you clean?
Yes, for the time we are working on it. Out-of-hours work is available so the building isn’t left without ventilation when it’s busy.
Are you accredited?
We hold CHAS, SafeContractor and ISO 9001, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. The Vent Hygiene Elite scheme is run by BESCA and audited independently.
Where does the waste go?
Anything we remove is contained as we work and taken away with us, including grease, debris and dirty water. None of it is left on site.
Is there a survey before the work?
Yes, every time. Diagnosis comes before treatment: the survey tells us what the system needs and how to reach it, and the quote is based on that.
Can one contract cover all our sites?
Yes. Tell us the addresses and what each needs and we’ll quote them together.
About our AHU cleaning in Ottershaw
We clean air handling units for buildings in Ottershaw and across Surrey, working to TR19® Air, 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 debris and leaves in the fresh air intake, across internal panels, heating and cooling coils and supply and extract fans.
Smaller buildings around Ottershaw 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.
Duct Doctor has been trading since 2009, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we’re fully insured.
- Where
- Ottershaw (KT16)
- Region
- Surrey
- Reporting
- Photo report after every visit
- Price
- A fixed price before any work starts
- Hours
- When your site is closed, plus a 24/7 line
- Telephone
- 0345 646 2711
- Page updated
- 30 October 2026
What AHU cleaning looks like in Ottershaw
Food Standards Agency records list about 10 schools, colleges and universities and about 12 hospitals, care homes and childcare premises registered as food businesses within 1.5 miles or so of the middle of Ottershaw. Busy, occupied buildings like these are where clean supply air matters most. St. Peter's Hospital is the nearest hospital, about 1 mile north of Ottershaw. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale. Ottershaw, about 21 miles from central London, is within our usual area. Visits are booked around your hours, evenings and weekends included.
Wherever a school like Ottershaw Christchurch Church of England Junior School has ducted ventilation, a half-term visit keeps the work out of lesson time.
Ottershaw is about 4 miles west of Weybridge, in Surrey. Sites in Ottershaw get the same service as everywhere we cover: a survey first, a fixed quote, work timed around your hours and a report with pictures. Across Surrey, we cover 395 places, and Ottershaw is one of them. There’s also a page for Guildford, about 8 miles away.
Every address in KT16 is within our area for AHU cleaning, from busy streets to back roads. If you need AHU cleaning at premises on Ottermead Lane, Chaworth Close and Crawshaw Road or anywhere close by, our technicians can take on the work. Neighbouring places we cover for AHU cleaning include Row Town (1 mile east), Stonehill (1 mile west), Woodham (1 mile south-east), Lyne (2 miles north) and Chertsey (2 miles north-east). Further out, we also cover Guildford (8 miles south), Woking (4 miles south-west), Camberley (9 miles west), Epsom (11 miles east), Ewell (12 miles east) and Egham (5 miles north).
What’s near Ottershaw
In Ottershaw, that means kitchens and buildings near Jubilee High School and White Lodge Children's Centre and the streets around them. The nearest railway station is Chertsey station, roughly 1.9 miles north-east. Well-known places in the area include The Hockey Museum (3.3 miles south) and St. Peter's Hospital (1 mile north). Green spaces nearby include St Ann's Lake and St Ann's Hill.
What staff can safely do
Staff cleaning does not replace a specialist visit; it supports it. Regular in-house cleaning slows the build-up, but hidden parts of the system still need specialist attention.
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.
When something else is needed
AHU cleaning cannot fix everything, and we will tell you before any work starts. It won’t put right:
- Damaged coils beyond cleaning
- Dirty ducts beyond the unit itself
- Controls and BMS settings that run the unit
If you’re not sure, just ring 0345 646 2711, or send details by email and we’ll give you a straight answer.
Parts of the system we cover
- Drain trays
- Heating and cooling coils
- Internal panels
- Dampers and louvres
- Supply and extract fans
- Filter sections
Different parts, different methods
Fans and fan sections
Build-up on fan blades can upset the balance and add wear. Cleaning keeps it running as intended.
Internal casing and panels
Damaged internal linings or loose panels can shed material into the air. Anything like that is recorded with photos.
Fixed quotes for AHU cleaning in Ottershaw
Before we fix a price, we need to know a few things. We check:
- Access, including roofs, risers and ceiling voids
- The number of sites or systems
- A single visit or a regular plan
- Any permits to work or inductions
What you pay depends on how big the system is, the condition it’s in and access to every part of it. You get a fixed price before work begins, so there are no surprises.
Helping us quote
There’s no need for technical detail. Just send:
- When the site is open and when it’s quiet
- How we’d reach plant on a roof or in a plant room
- The postcode and the type of business
- Any access panels or hatches you can see
Quotes are quick. Send a few details and photos, and we normally reply with a fixed quote within one working day. If we need to see the system first, we book a survey around your hours.
What else we do in Ottershaw
How the visit works
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, while signing off means the written report and pictures. The middle part takes longest, which takes anything from half a day for one small unit to several shifts for a plant room full of them. For a site near Ottershaw, the work is booked around your opening hours, evenings and weekends included.
- We survey the unit from pictures or on site and agree what’s included.
- With your site team, the unit is switched off and isolated, then the area around it protected.
- Filters are dealt with as agreed, and the coils, fan and casing cleaned.
- Drain trays are cleared and cleaned and the outlet checked.
- You get a TR19® certificate and a photo report.
Before we arrive
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
- Find the previous report, if there is one
- Name a contact who can let us in at the agreed time
Getting a quote
Every quote begins with a look at the system, from your photos and details or, where that is not enough, a survey on site. After that, you get a fixed price for the work so you know the cost before any work starts.
Read more
Leave it or put it right?
A light clean now is simpler than a heavy one later. Years of build-up make the job longer and harder, particularly where damp has made it stick. It’s better to plan the work at a site near Ottershaw than wait for a failure.
The price reflects the work, not guesswork. That is why every job is surveyed first, and the price is agreed before any work starts.
Why choose Duct Doctor in Ottershaw
- A written report with pictures after every visit
- A fixed price before any work starts
- Fully insured
- One contact for all your sites in London and the South East
Read what affects the cost and our accreditations and certificates.
Signs you need AHU cleaning in Ottershaw
No filter stops everything. The fine dust that passes the filters lands on the coils, the fan and the internal panels, building up layer by layer.
What we are most often called out for:
- Filters that are clogged or overdue
- Odours coming through the supply air
- Units that have only ever had filter changes
- Blocked condensate drains and slimy trays
St. Peter's Hospital, about 1 mile north, is the nearest hospital to Ottershaw, and healthcare sites of every size need their supply air kept clean.
Comparing quotes
- If the quote is a fixed price or an estimate
- Whether a survey comes first
- What insurance they carry
- Whether inaccessible sections are listed on the report