Greater London · Air handling unit cleaning
AHU Cleaning in Northwick Park
Air handling unit cleaning for Northwick Park, with a survey first and a report with pictures at the end. Ask us for a fixed quote.
- Units that have only ever had filter changes
- Plant that needs cleaning after a refit
- Air handling units with blocked filters
Common problems we fix in Northwick Park
Filters catch most of the dust, but not all of it. What gets through settles on coils, fans and the inside of the casing, a little more each month.
Look out for any of the following:
- Filters that are clogged or overdue
- Stale or musty smells from the ventilation
- Dirty coils holding back the airflow
- Dirty fans and fan housings
School buildings such as Harrow High School are typically done in the holidays, so classrooms aren’t disturbed.
What your quote should include
- If they look at the system before pricing
- Whether the price is fixed
- Proof of accreditation you can verify
- When the next visit should be, and why
About our AHU cleaning in Northwick Park
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, which is why we clean the unit itself, not just the ducts. If you are dealing with dirty fans and fan housings and plant that needs cleaning after a refit, we can put it right.
Many London buildings have had their ventilation extended and altered through several fit-outs, with old runs left behind that are hard to reach. In Northwick Park, as elsewhere, cleaning starts with an inspection of what’s there.
For insurers and inspectors, the record counts. So every job comes with a written report and photos, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Place
- Northwick Park (HA1, HA3, HA0)
- Wider area
- Greater London
- Paperwork
- Photo report after every visit
- Quote
- A fixed price before we start
- Working hours
- Nights, weekends or holidays to suit you
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
What we do, step by step
Every visit runs to the same pattern: protect the area, isolate whatever needs isolating, do the work, tidy up and hand over the paperwork. On site, the work takes half a day to a full day per unit, with large plant planned over several shifts. Most London sites cannot stop for the day, so work in Northwick Park is normally done overnight, early in the morning or at weekends.
- 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.
- We finish with the fan section and the drain tray.
- After photos are taken and the certificate issued.
Before we arrive
- Arrange a key holder or contact on site
- Agree a time when the area can be out of use
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
Get a fixed quote
To get a fixed quote, call 0345 646 2711, or email photos 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. You will typically have a quote within one working day.
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Your questions about AHU cleaning in Northwick Park
Do you work at weekends in Northwick Park?
Yes, out-of-hours work is a big part of what we do. Your customers, staff or residents in Northwick Park needn’t be disturbed. When you call 0345 646 2711 or drop us a line, mention when the site is quiet.
Do you clean school ventilation in Northwick Park in the holidays?
Yes, and it’s the easiest time to do it. Around Northwick Park, the Food Standards Agency lists about 21 schools and colleges with registered kitchens within a mile and a half or so. Just phone us on 0345 646 2711, or email photos with your term dates and we’ll plan around them.
Are you fully insured?
Yes. We’re fully insured, and we can share the details when you need them.
Do you have a 24/7 line?
Yes. Our emergency line runs 24/7, for problems that can’t wait. Ring any time and tell us what’s happened.
How do you keep the site clean during the work?
We start with protection: floor sheeting and covers over nearby surfaces and equipment. We tidy up and take our waste away before we leave.
Do you repair air handling units?
AHU cleaning is what we offer here, not mechanical repairs. Any faults we notice are recorded so your maintenance contractor can deal with it.
Will we get paperwork for the AHU clean?
Yes. You receive a certificate and a report showing each section before and after, including anything we think needs attention.
What accreditations do you have?
We’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we carry full insurance.
Leave it or put it right?
When the unit is clean, less dirt reaches the ducts, so the whole system stays cleaner for longer. It also means the next inspection has less to find. It’s better booked as a planned job in Northwick Park than handled as an emergency.
When the work has to happen, how we reach it and how big the site is can all change the price. Each of those is built into the quote and give you a fixed price before we start.
Why Northwick Park businesses choose us
- Fixed quotes, usually within one working day
- Evenings, overnight and weekends, plus 24/7 emergency callout
- One number for every site across the South East and London
- Trading since 2009
Towns and villages near Northwick Park
More services for Northwick Park
AHU cleaning around Northwick Park
Food Standards Agency records list about 21 schools, colleges and universities, about 83 hospitals, care homes and childcare premises and about 3 hotels and B&Bs registered as food businesses within 1.5 miles or so of the middle of Northwick Park. Buildings like these often rely on mechanical ventilation, which TR19® Air covers. In London, ventilation plant is often on the roof or below ground, so the work is normally done out of hours. About under half a mile north-east of Northwick Park is Northwick Park Hospital, the nearest hospital. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
If you manage shops or offices close to Kenton station, a TR19® Air inspection shows whether the ductwork needs cleaning. Healthcare ventilation, from large hospitals like Northwick Park Hospital (about less than half a mile north-east) to small clinics, depends on clean filters, coils and ducts.
Northwick Park is about 1 mile south-west of Kenton, in Greater London. Whether your site is in the middle of Northwick Park or further out, we cover AHU cleaning for every kind of premises, from a single unit to a large public building. Across Greater London, we cover 764 places, Northwick Park among them. We also work in London, around 11 miles away.
Postcode districts we cover here for AHU cleaning: HA1, HA3 and HA0. Local streets include Lyon Road, Manor Road and Gayton Road, all of which we cover for AHU cleaning. Northwick Park sits on or near the A404, so getting to you is simple for AHU cleaning. We also cover Greenhill (1 mile north-west), Harrow on the Hill (1 mile south-west), South Kenton (1 mile east), Kenton (1 mile north-east) and Harrow (1 mile west). We also work in nearby towns such as London (11 miles south-east), City of Westminster (9 miles south-east), Marylebone (9 miles south-east), Kensington (7 miles south-east), St Pancras (10 miles east) and Shoreditch (11 miles east).
Local landmarks in Northwick Park
Locally, jobs take us to businesses close to St Anselm's Catholic Primary School, Orley Farm School and Preston Park. Northwick Park’s nearest station is Kenton station, about 0.6 miles north-east of the centre. A little further out are Northwick Park Hospital (less than half a mile north-east) and Kodak Museum (1.5 miles north-west). Green spaces nearby include Masons Field and Northala Fields.
What your team can do, and what needs 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 grease that has passed the filters is out of reach. That part needs specialist access and equipment.
Your own staff can handle the daily basics: wiping canopies, washing grease filters and recording it in a log. Inside the ducts, risers and fan is specialist work, which is where we come in.
Between visits
Here’s the after-treatment advice, short and simple:
- Check the drain tray is emptying during routine visits
- File each AHU report in the maintenance log
- Book the next check in line with the report
- Keep the area around the fresh air intake clear
Restart the unit with your site team or maintenance contractor once we have finished. Keep an eye on the condensate drain over the next few days to confirm water is draining away.
Regular filter changes are the best protection an AHU has. Once filters clog, dirt starts getting past them.
How the job changes from site to site
Fans and fan sections
Dust on a fan impeller adds weight and wear. Cleaning keeps it running as intended.
Drain trays
Older trays can corrode and start leaking. Their condition goes into the report with photos so you can decide on any repairs.
Honest limits
It’s worth knowing the limits before booking:
- The supply and extract ducts, quoted separately
- Airflow problems caused by the system’s design
- Breakdowns that need a mechanical engineer
If you’re not sure, just give us a ring on 0345 646 2711 or use the quote form and we will give you a straight answer.
What we work on in Northwick Park
- Filter sections
- Internal panels
- Dampers and louvres
- Drain trays
- Heating and cooling coils
- Supply and extract fans