Surrey · Air handling unit cleaning
AHU Cleaning in Westborough
One call covers AHU cleaning in Westborough: survey, fixed quote, work and sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Air handling units with blocked filters
- Rooms that smell stuffy when the system runs
- Blocked condensate drains and slimy trays
What happens on the day
Your staff do not need to do much on the day. A contact on site lets us in at the agreed time and points us to the system, and the rest is down to us. Afterwards, the area is left tidy and the written report follows. Visits to a place like Westborough are planned ahead, so we arrive with what the survey says the job needs.
- We look at the unit and the plant area during the survey.
- The area is protected and the unit made safe.
- Each section is cleaned of dust, debris and slime.
- Coils and trays are cleaned and the condensate drain cleared.
- The unit is closed up and handed back, with a report to follow.
Before we arrive
- Agree a time when the area can be out of use
- Let us know how we reach the system, including roofs, risers and plant rooms
- Make sure someone can let us in and lock up afterwards
How to get a quote
The quickest way to a quote is to send pictures: wide shots of the system, close-ups of anything that worries you and how we’d get to it. Tell us what kind of site it is and when it’s open, and many jobs can be priced from that alone.
Advice
About our AHU cleaning in Westborough
A cooling coil drips condensate into a tray that should drain away. If the outlet blocks, standing water and slime build up, in the airstream that feeds the building. Cleaning and clearing it is a key part of the job. If you have coils clogged with dust and debris and fan sections that haven’t been cleaned in years, we can help.
Around a place like Westborough, ventilation systems tend to be in schools, surgeries, care homes and workplaces. Even a small system collects dust in its ducts and filters.
Our accreditations include CHAS, SafeContractor and 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.
- Place
- Westborough (GU2, GU1, GU3)
- Wider area
- Surrey
- Paperwork
- Photo report after every visit
- Quotes
- A fixed quote up front
- When we work
- Nights, weekends or holidays to suit you
- Phone
- 0345 646 2711
- Checked
- 30 October 2026
Westborough questions
Do you cover smaller places like Westborough?
Yes, smaller places are covered as well as towns. Let us know about access, parking and anything unusual about getting there when you book.
Can you clean school ventilation in Westborough during the holidays?
Yes, holiday work suits schools best. Around Westborough, the Food Standards Agency lists about 35 schools and colleges with registered kitchens within a mile and a half or so. Booking early in the term gives the best choice of holiday dates.
How much does AHU cleaning cost?
We do not publish prices, because the cost depends on the job: the size of the system, its condition, access and when we can work. You get a fixed price before any work starts.
Do you work evenings or weekends?
Yes. We time the work to fit the building’s hours. In hospitals and care homes, we agree timings with the site team.
What’s TR19?
It’s BESA’s specification and the benchmark insurers, fire officers and EHOs look to. It covers how systems are inspected, cleaned and checked and expects a risk-based approach.
What should I send you?
Only a few details: where it is, what kind of site, when it’s open and the access. Photos and the last report help too. Then call 0345 646 2711 or email us.
Can you fix a faulty AHU?
Mechanical repairs to the unit are for your HVAC maintenance contractor. We will flag anything we notice during the clean.
Does the AHU have to be shut down for cleaning?
Yes. The unit has to be shut down and isolated before it’s opened. We agree the timing with your site team.
What AHU cleaning can’t fix
We’d rather tell you now than book work that will not help, so here are the limits:
- Breakdowns that need a mechanical engineer
- Ventilation that was badly designed in the first place
- Controls and BMS settings that run the unit
Not sure which it is? You can call 0345 646 2711, or email photos and we’ll tell you honestly.
Parts of the system we cover
- Filter sections
- Drain trays
- Internal panels
- Supply and extract fans
- Dampers and louvres
- Heating and cooling coils
Why act early in Westborough
Facilities teams are often asked for evidence that the ventilation is looked after. Our certificate and photo report give you clear evidence, for audits, tenants or your own peace of mind. Systems on quieter sites still build up dirt and wear, just more slowly.
Working hours, access and the scale of the site all affect the cost. We take each of them into account, and the price is fixed before any work starts.
Why choose Duct Doctor in Westborough
- Fully insured
- In business since 2009
- One number for every site across the South East and London
- Survey first, then a fixed quote
Read what affects the cost and our accreditations.
How we price AHU cleaning
Every site gets its own quote. This is what makes a difference:
- One-off work versus a regular cycle
- The condition we find in the survey
- How big the system is
- The number of sites or systems
Every site is different, so each one gets its own fixed quote. The size of the job, how we reach it, its condition and the working hours all play a part.
What to send for a quote
When you call or email, these details help:
- The postcode and the type of business
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- Any previous report or certificate
- 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.
Nearby places to Westborough
More services for Westborough
When to call us in Westborough
Planned maintenance often covers belts, motors and filters but not cleaning. So a unit can be well maintained and still dirty.
Common reasons sites call us are:
- Filters that are clogged or overdue
- Dirty coils holding back the airflow
- Dirty fans and fan housings
- Rooms that smell stuffy when the system runs
Classrooms and halls at schools such as St Joseph's Catholic Primary School are easiest to work in when pupils are away.
What your quote should include
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- When they can work, and whether that is outside your opening hours
- Whether VAT is included
- When the next visit should be, and why
Staff cleaning versus specialist work
A few tasks are always specialist work: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease call for the right kit, training and safe access. Leave those to us.
Staff cleaning and specialist work are not the same thing. Wiping filters daily and washing them weekly keeps the visible parts in order, but they don’t reach the grease that builds up further in. That part needs specialist access and equipment.
What AHU cleaning looks like in Westborough
The FSA’s food hygiene register lists about 35 schools, colleges and universities, about 23 care, childcare and hospital premises and about 3 hotels and guest houses with registered kitchens or food service within roughly a mile and a half of the centre of Westborough. Busy, occupied buildings like these are where clean supply air matters most. We cover Westborough, about 28 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. The nearest hospital to Westborough is Royal Surrey County Hospital, about 0.6 miles south-west. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
Royal Surrey County Hospital, about 0.6 miles south-west, is the nearest hospital to Westborough, and healthcare sites of every size need their supply air kept clean.
Westborough is about 1 mile west of Guildford, in Surrey. We carry out AHU cleaning for businesses, landlords and public buildings in Westborough and the rest of Surrey. Westborough is one of 395 towns, villages and districts in Surrey we cover for commercial clients.
Here we cover the GU2, GU1 and GU3 postcode area for AHU cleaning. Local streets include Cabell Road, Clover Road and Weston Road, and we cover them all for AHU cleaning. You will find Westborough on the A323, which makes it straightforward for our technicians to reach for out-of-hours visits. We also cover the places around Westborough: Stoughton (1 mile north), Bellfields (1 mile north-east), Guildford (1 mile east), Abbotswood (2 miles east) and Jacobs Well (2 miles north-east). We also work in nearby towns such as Woking (5 miles north), Camberley (8 miles north-west), Farnham (9 miles west), Egham (13 miles north), Walton-on-Thames (13 miles north-east) and Dorking (12 miles east).
Landmarks near Westborough
Locally, jobs take us to businesses close to Kings College Guildford, Broadstreet and Hare and Hounds pub, among other places. For rail, the closest station is Guildford station, roughly 1 mile south-east. Other landmarks nearby include Royal Surrey County Hospital (0.6 miles south-west) and Guildford Cathedral Treasury (0.5 miles south-east). The countryside around Westborough includes Littlefield Common and Pewley Hill.
How the job changes from site to site
Drain trays
Condensate from the coil drips into a tray beneath it. Standing water and slime are removed and the outlet is checked.
Filters
Dirty filters cut airflow and let dirt slip past their frames. The filter section is cleaned so new or cleaned filters sit properly.