Surrey · Air handling unit cleaning
Air handling unit cleaning in Norwood Hill, Surrey
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces for commercial sites in Norwood Hill and across Surrey. CHAS, SafeContractor and ISO 9001, and fully insured.
- Plant that needs cleaning after a refit
- Dirty coils holding back the airflow
- Dirty filters cutting the airflow
How we handle AHU cleaning in Norwood Hill
All the building’s air passes through the fan, so dirt on the impeller and housing gets spread around. We clean the fan section along with the rest of the unit, with the unit switched off and made safe first. Typical jobs include filters that are clogged or overdue and dust built up on fan impellers, across internal panels, filter sections and drain trays.
In rural areas, ventilation units are often in roof voids or outbuildings, where filters and drain trays get forgotten.
The report is your system’s health record: a dated account with photos of everything we did. Grease extract cleans are also certificated to TR19® Grease through the BESCA VHE portal and sits alongside the report.
- Location
- Norwood Hill (RH6)
- Wider area
- Surrey
- Records
- Written report with photos
- Quote
- A fixed quote up front
- When we work
- Nights, weekends or holidays to suit you
- Call
- 0345 646 2711
- Reviewed
- 30 October 2026
AHU cleaning around Norwood Hill
Food Standards Agency data includes about 4 caring premises (care homes, nurseries and hospitals) across Norwood Hill and its immediate surroundings (about a mile and a half). Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. At about 23 miles from central London, Norwood Hill sits well inside the area we cover. Evening, overnight and weekend visits are all possible. About 3.6 miles south-east of Norwood Hill is Langley Green Hospital, the nearest hospital. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale.
Langley Green Hospital, about 3.6 miles south-east, is the nearest hospital to Norwood Hill, and healthcare sites of every size need their supply air kept clean.
Norwood Hill is about 2 miles west of Horley, in Surrey. If you need AHU cleaning in Norwood Hill, it’s easy to get a fixed quote: please phone us on 0345 646 2711 or drop us a line. We work across South East England and London, Norwood Hill included. Across Surrey, we cover 395 places, Norwood Hill among them. There’s also a page for Guildford, about 16 miles away.
Postcode districts we cover here for AHU cleaning: RH6. Nearby, we also carry out AHU cleaning in Nalderswood (1 mile north-west), Charlwood (2 miles south), Cudworth (2 miles south-west), Parkgate (2 miles west) and Russ Hill (2 miles south). We also work in nearby towns such as Epsom (11 miles north), Redhill (5 miles north-east), Ewell (12 miles north), Reigate (4 miles north), Caterham (9 miles north-east) and Dorking (6 miles north-west).
Local landmarks in Norwood Hill
In Norwood Hill, that means kitchens and buildings near Edolph's Copse, among other places. For rail, the closest station is Horley station, roughly 2.8 miles east of the centre. A little further out are Reigate Castle (4.2 miles north) and Langley Green Hospital (3.6 miles south-east). Open spaces near Norwood Hill include Reigate Heath.
FAQs for Norwood Hill
Can you work in Norwood Hill outside opening hours?
Yes, evening, overnight and weekend work is normal for us. It means the site in Norwood Hill keeps running as normal. Your opening times are the first thing we ask for.
Do you cover Norwood Hill for AHU cleaning?
Yes, Norwood Hill is within the area we cover across London and the South East. You can phone us on 0345 646 2711 or email us and tell us what needs doing.
How often do AHUs need cleaning?
Inspection under TR19® Air decides it. Units in heavy use or in sensitive buildings may need attention more often.
What is TR19?
It’s the industry benchmark for cleaning ventilation and kitchen extract systems, written by BESA. It sets out inspection, cleaning and record keeping and expects a risk-based approach.
Do you have insurance?
Yes. We’re fully insured, and the details are available on request.
Do you survey before quoting?
Yes. Every job is surveyed first, from your photos and details, or with a visit where needed. A fixed quote follows.
Will you repair the fan or motor?
We clean the unit and flag faults rather than repair them, with the details in the report.
What happens if you can’t reach some of it?
They’re marked on the report. Often the fix is extra access, such as new panels in ductwork, and we can fit those.
Do you need AHU cleaning in Norwood Hill?
Filters that aren’t changed or cleaned on time clog up, cutting airflow and sometimes letting dirty air bypass them altogether. After that, the coils and fan collect what the filter should have caught.
Any of these means the system needs a check-up:
- Stale or musty smells from the ventilation
- Intake sections clogged with outdoor debris
- Blocked condensate drains and slimy trays
- Coils clogged with dust and debris
An inspection comes first for any ventilation job around Norwood Hill, so the cleaning matches what’s there.
Questions to ask before you book
- How VAT is shown on the quote
- Whether a survey comes first
- Proof of insurance
- Whether they recommend a next date
Different parts, different methods
Fans and fan sections
Dust on a fan impeller adds weight and wear. Cleaning keeps it running as intended.
Drain trays
The drain tray collects water from the cooling coil. We clear standing water, clean out slime and check the outlet is draining.
For landlords and multi-site operators
When the building owner and the occupier are different, it’s worth checking the lease for who maintains the systems. We’re happy to deal with either side and send the paperwork to whoever needs it.
The Fire Safety Order 2005 puts the duty to manage fire risk on the responsible person, and that can be the employer, the owner, a landlord, a facilities manager or a managing agent. Where responsibility is shared, records matter even more.
Also near Norwood Hill
What else we do in Norwood Hill
Staff cleaning versus specialist work
Day-to-day cleaning is something your team can do: wiping down canopy surfaces, cleaning filters and keeping a simple log. Inside the ducts, risers and fan is specialist work, and that’s where we come in.
In-house cleaning and specialist cleaning do different jobs. A daily filter wipe and a weekly filter wash keep grease down at the front of the system, but grease that has passed the filters is out of reach. Reaching it takes a specialist with the right equipment.
How we price AHU cleaning
The quote reflects the site in front of us. We consider:
- The times the site is available
- Travel, parking and unloading
- What state the system is in
- Whether we need access equipment or extra panels
Kitchens, offices, schools and hospitals are all priced the same way: the size of the job, access, condition and working hours. Call for a fixed quote and we’ll go through it with you.
Helping us quote
What to send for a quote:
- Any access panels or hatches you can see
- The postcode and the type of business
- Your opening hours and when the area is out of use
- The paperwork from the last visit, if you have it
The quickest way to a quote is to send pictures: the system from a couple of angles, plus any access panels or hatches. Add the site type and your opening hours, and many jobs can be priced from that alone.
Looking after it afterwards
Good habits slow the build-up between visits. A few tips:
- Plan the next inspection before the last report gets filed away
- Keep inspection doors on the unit in good order
- Check the drain tray is emptying during routine visits
- Stick to the filter change plan
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.
Check drain trays and condensate drains during routine maintenance. Catching a slow drain early stops standing water building up.
The process
We are used to working while the site is closed. A lot of visits happen overnight or at weekends, so the site can open as normal afterwards. On site, the work takes half a day to a full day per unit, with large plant planned over several shifts. A quick note on how to find the site and where to park makes a visit to Norwood Hill run smoothly.
- 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
- Find the previous report, if there is one
- Tell us where we can park and unload
Ask for a 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, then send a fixed quote. To get going, call us on 0345 646 2711 or use the quote form.