Surrey · Air handling unit cleaning
Air handling unit cleaning in Oxted, Surrey
One call covers cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Oxted: survey, fixed quote, work and sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.
- Units needing a clean before a new tenant or handover
- Plant that has been serviced but not cleaned
- Dirty coils holding back the airflow
How the visit works
Night work is normal for us. Evenings, nights and weekends are when much of our work happens, so the site can open as normal afterwards. On site, the work takes one overnight shift for many single units, with bigger plant phased. Because the survey comes first, a visit to Oxted can normally be finished without a second trip.
- We agree a shutdown window that suits the building.
- We take before pictures 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.
Preparing for the visit
- Tell us the best time to work, such as after service or at a weekend
- Mention any parking or loading restrictions
- Make sure someone can let us in and lock up afterwards
Ask for a quote
Photos are the quickest way to a quote: the system from a couple of angles, plus any access panels or hatches. Add the site type and your opening hours, and we can price many jobs without a visit.
Advice
AHU cleaning in Oxted
Every supply and extract system relies on the air handling unit at its centre: it draws air in, filters it, heats or cools it and pushes it round the ductwork. Whatever builds up inside it travels with that air, so cleaning the unit matters as much as cleaning the ducts. The work covers dampers and louvres, filter sections and heating and cooling coils, and people most often call us about leaves and litter drawn into the unit and air handling units with blocked filters.
In a smaller place like Oxted, buildings with ducted ventilation are more likely to be a school, a surgery, a care home or a small business unit than an office block. Even a small system collects dust in its ducts and filters.
Nothing is signed off by word of mouth: a written report, dated and illustrated with pictures, and for TR19® Grease cleans, a certificate issued through the BESCA VHE portal. Any parts we couldn’t reach are recorded on it too.
- Place
- Oxted (RH8)
- Wider area
- Surrey
- Records
- Report and photos after the visit
- Quote
- Fixed quote, typically within a working day
- When we work
- After hours by arrangement; emergencies any time
- Call
- 0345 646 2711
- Reviewed
- 30 October 2026
Managing agents and facilities teams in Oxted
From a single site to a large estate, you get the same standard: the system surveyed, the price fixed, the visit fitted around trading and everything written up afterwards.
Where a tenant occupies the premises but the landlord owns the building, it’s worth checking the lease for who maintains the systems. We can quote either party and send the paperwork to whoever needs it.
Common problems we fix in Oxted
It matters for two reasons: the unit supplies the air people breathe, and a dirty unit has to work harder. For the people using the building every day, that’s the air they breathe for hours on end.
Most sites get in touch when they notice one of these:
- Dirty filters cutting the airflow
- Air handling units due a clean after building work
- Intake sections clogged with outdoor debris
- Dust-coated heating and cooling coils
Healthcare ventilation, from large hospitals like Foetal Alcohol Spectrum Disorders Clinic (about 0.6 miles north) to small clinics, depends on clean filters, coils and ducts.
What your quote should include
- Proof of accreditation you can verify
- How areas they can’t reach will be recorded
- What records you will receive afterwards
- When they can work, and whether that’s outside your opening hours
Part by part
Filters
Dirty filters cut airflow and let dirt slip past their frames. We clean the frames and rails so the filters sit tight.
Drain trays
Drain trays can rust and leak over time. We record their condition with pictures so you can decide on any repairs.
When something else is needed
To be straight with you, some problems need a different fix:
- Leaking heating or cooling coils
- Faulty motors, drives or bearings
- Building management system faults
If you’re not sure, just give us a ring on 0345 646 2711 or send us an email and we’ll give you a straight answer before booking.
What we work on in Oxted
- Drain trays
- Dampers and louvres
- Internal panels
- Supply and extract fans
- Filter sections
- Heating and cooling coils
Other services in Oxted
Staff cleaning versus specialist work
Keep a record of what your team does. A dated log of in-house cleaning and checks helps show that the system is managed between specialist visits, alongside our reports.
Staff cleaning does not replace a specialist visit; it supports it. Regular in-house cleaning slows the build-up, but the parts you can’t see still need a specialist at the right interval.
How we price AHU cleaning
You will get a fixed price before any work starts. It takes into account:
- How many systems or sites are involved
- The scale of the work
- Site rules, permits and inductions
- What state the system is in
Several systems or sites on one quote often makes better use of the time. Tell us about everything you’d like looked at, and you will get one fixed quote.
Asking for a quote
There’s no need for technical detail. It helps if you can send:
- Where the site is and what kind of site it is
- The paperwork from the last visit, if you have it
- Photos showing the whole system and its surroundings
- Any access panels or hatches you can see
To get a fixed quote, call 0345 646 2711 or use the quote form with the site type, your trading hours and a short description of the system. A few photos and your last certificate or report help a lot. We typically come back within one working day.
Ventilation in Oxted buildings
Food Standards Agency records list about 4 schools, colleges and universities and about 9 hospitals, care homes and childcare premises registered as food businesses within roughly a mile and a half of the centre of Oxted. Busy, occupied buildings like these are where clean supply air matters most. We cover Oxted, about 18 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. For Oxted, the closest hospital is Foetal Alcohol Spectrum Disorders Clinic, roughly 0.6 miles north. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too.
If you manage offices or shops near Hurst Green station, their ventilation can be inspected and cleaned out of hours. Wherever a school like Hazelwood School has ducted ventilation, a half-term visit keeps the work out of lesson time.
Oxted is about 7 miles east of Redhill, in Surrey. Sites in Oxted 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. London is in our area too, around 18 miles away.
AHU cleaning in RH8 follows the same survey, fixed quote and written report as everywhere else we cover. That includes premises on Station Road West, Station Road East and High Street and the roads around them. Oxted sits on or near the A25, so getting to you is simple for evening and night visits. Neighbouring places we cover for AHU cleaning include Hurst Green (1 mile south), Limpsfield (1 mile north-east), Pains-Hill (1 mile east), Tandridge (2 miles south-west) and The Chart (2 miles east). Larger places within reach include Epsom (13 miles north-west), Horley (9 miles south-west), Redhill (7 miles west), Ewell (13 miles north-west), Reigate (9 miles west) and Caterham (5 miles north-west).
Local landmarks in Oxted
We work in commercial kitchens and buildings around Oxted School and Hurst Green Infant School. Oxted’s nearest station is Hurst Green station, about 0.5 miles south-east. Well-known places in the area include Bletchingley Castle (4.6 miles west) and East Surrey Museum (4 miles north-west). Green spaces nearby include Bay Pond and Botley Hill.
FAQs for Oxted
Can ventilation in schools around Oxted be cleaned out of term?
Yes, holiday work suits schools best. The FSA’s register shows about 4 schools and colleges with food registrations within roughly a mile and a half of Oxted. Tell us your holiday dates and we will book the visit for when the site is empty.
Can the work in Oxted be done at night or at weekends?
Yes, nights and weekends are routine for us. That way a site in Oxted does not have to lose a day’s trading. Your opening times are the first thing we ask for.
What happens if you can’t reach some of it?
They’re listed in the report, never skipped quietly. The report says which parts couldn’t be reached and why, along with a quote to put access in.
Is there a report after cleaning?
Yes. You get a TR19® certificate plus before and after photos. Keep them in the maintenance log.
What does AHU cleaning cost?
There’s no set price, as it depends on the job: the size of the system, its condition, access and when we can work. You get a fixed price before work begins.
Can you price the work without visiting?
Yes, if we can see what we need. Otherwise, we book a survey at a time that suits the site, then a fixed quote.
Can you come out in an emergency?
Yes, any time. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line, and we will advise on what to do next.
Are you insured?
Yes. Duct Doctor is fully insured, and we can share the details when you need them.