Greater London · Air handling unit cleaning

Air handling unit cleaning in Fortis Green, Greater London

Our technicians work in Fortis Green on cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces. Out-of-hours visits, a fixed quote and a written report with pictures on every job.

  • Dust built up on fan impellers
  • Units needing a clean before a new tenant or handover
  • Units that have only ever had filter changes

AHU cleaning for sites in Fortis Green

What we do, step by step

Everything the job needs comes with us, from protective sheeting to tools and access equipment. You only need to give us clear access and switch off what needs to be off. The visit takes a single shift for a typical unit, longer for large or heavily soiled ones. Managed blocks in London often need contractors booked in ahead, and we’re happy to deal with the agent directly for a site in Fortis Green.

  1. We agree a shutdown window that suits the building.
  2. We take before pictures of each section of the unit.
  3. We work through the unit from the intake to the outlet.
  4. We finish with the fan section and the drain tray.
  5. After pictures are taken and the certificate issued.

Getting ready for the visit

  • Let us know how we reach the system, including roofs, risers and plant rooms
  • Mention any sign-in, permit or induction we need
  • Agree a time when the area can be out of use

Get a fixed quote

If you need AHU cleaning in Fortis Green, give us a ring on 0345 646 2711, or email photos. Tell us what kind of premises it is and when it’s open, and send photos or your last report if you can. A fixed quote usually follows within one working day.

Get a quick quote

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AHU cleaning in Fortis Green

If the units serving a building in Fortis Green have only had filter changes for years, there may be dirt on the coils, fan and casing that nobody has looked at. A full AHU clean takes in the whole unit. Typical jobs include units needing a clean before a new tenant or handover and dust built up on fan impellers, across heating and cooling coils, internal panels and dampers and louvres.

London buildings often depend on air handling units in plant rooms or on the roof to supply fresh air. For a building in Fortis Green, dust settles in the units and ducts year after year.

For insurers and inspectors, the record counts. So every job comes with a written report and photos, and grease extract cleans come with a TR19® certificate issued through the BESCA Vent Hygiene Elite portal.

Five Duct Doctor technicians in navy uniforms with the company vans
Place
Fortis Green (N10, N2, N6)
Wider area
Greater London
Reporting
Report and pictures after the visit
Quote
A fixed quote up front
Hours
Out of hours as standard, 24/7 emergency line
Phone
0345 646 2711
Updated
30 October 2026

Signs you need AHU cleaning in Fortis Green

Air handling units are usually tucked away on roofs, in plant rooms or above ceilings and are rarely seen by anyone but maintenance staff. Months can pass without anyone looking inside.

Keep an eye out for these warning signs:

  • Blocked condensate drains and slimy trays
  • Plant that has been serviced but not cleaned
  • Dirty coils holding back the airflow
  • Rooms that smell stuffy when the system runs

For schools like Fortismere School, the holidays are the usual time to inspect and clean ventilation.

What your quote should include

  • Which accreditations they hold, and whether you can check them
  • Whether the whole system is included, or only the parts that are easy to reach
  • Whether the price is fixed
  • What paperwork you get at the end

How to choose an extract cleaning contractor

What AHU cleaning cannot fix

It’s worth knowing the limits before booking:

  • Building management system faults
  • Ductwork downstream of the unit, which is a separate clean
  • Damaged coils beyond cleaning

If you’re not sure, just call us on 0345 646 2711 or send us an email and we will give you a straight answer before you book.

Where we work

  • Internal panels
  • Supply and extract fans
  • Heating and cooling coils
  • Drain trays
  • Filter sections
  • Dampers and louvres

What affects the quote in Fortis Green

The survey tells us what the work involves. The main factors are:

  • The size of the system
  • Whether several sites go on one quote
  • The times the site is available
  • How easy every part is to reach

Working hours, access and the scale of the site can all change the price. Each of those is built into the quote and give you a fixed price before any work starts.

What we need to know

Many jobs can be priced from photos and some basics. Send what you can of the following:

  • Your last certificate, test record or report
  • The roof, plant room or outside wall the system runs to
  • Problems your staff have spotted
  • When the site is open and when it’s quiet

Here’s what helps us quote: where the site is, what it is and its opening hours, a few pictures and the last certificate or report, if there is one. Then call 0345 646 2711 or send us an email.

Questions from Fortis Green

Do you do school ventilation cleaning in Fortis Green in the summer holidays?

Yes. Half-terms and the summer break are the natural time for school work. There are about 51 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Fortis Green. Just phone us on 0345 646 2711 or use the quote form with your term dates and we will plan around them.

Do you work overnight in Fortis Green?

Yes. We work evenings, overnight and at weekends. Your customers, staff or residents in Fortis Green needn’t be disturbed. Just give us a ring on 0345 646 2711, or email photos with your opening times and we will plan around them.

What types of premises do you cover?

Any site with a kitchen or a ventilation system to look after, from a small pub to a hospital. Hotels, schools, care homes, offices, shops and leisure sites are all part of our work.

Do you have insurance?

Yes. We carry full insurance and have been trading since 2009.

Can we book visits on a schedule?

Yes. Tell us what you have and how it’s used, and we’ll suggest a schedule and quote for it.

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.

How often do AHUs need cleaning?

There’s no single answer; it comes down to the building and the unit. Inspection tells you when cleaning is needed, and the report recommends a next date.

How do you protect the area?

We cover floors and nearby surfaces with sheeting before work begins, and waste is contained as we go. Before we leave, we tidy up and clean down.

For landlords and multi-site operators

If you look after several sites, we can schedule visits across all of them on one quote. Every building has its own written report, so each one has its own record.

Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person must assess and reduce fire risk, and that can be the employer, the owner, a landlord, a facilities manager or a managing agent. With shared responsibility, good records help everyone.

Aftercare tips

No system stays clean for ever, but care slows the build-up. A few tips:

  • Make sure condensate is draining away
  • Make sure the unit’s access doors open easily
  • Report water on the plant room floor
  • Keep filter changes on time and recorded

Restart the unit with your site team or maintenance contractor once we’ve finished. Check the drain tray is emptying over the first few days to make sure it stays clear.

Don’t let leaves, litter or stored materials build up near the fresh air intake. What’s near the intake ends up in the unit.

What the work involves, part by part

Internal casing and panels

Damaged internal linings or loose panels can shed material into the air. Anything like that is recorded with photos.

Filters

Every AHU relies on its filters to catch dust before it reaches the coils. We check them, and clean or change them as agreed in the quote, and clean the filter housing.

Ventilation in Fortis Green buildings

There are about 51 schools, colleges and universities and about 49 hospitals, care homes and childcare premises on the FSA’s food hygiene register within about 1.5 miles of central Fortis Green. Classrooms, bedrooms and care spaces are often served by ducted air, and that ductwork collects dust over time. Many London buildings have had their ductwork altered through several fit-outs, so an inspection comes first. For Fortis Green, the closest hospital is Coppetts Wood Hospital, roughly 0.7 miles north. Clean air matters most where people are unwell, and that’s as true in a care home as in a hospital.

Healthcare buildings such as Coppetts Wood Hospital, about 0.7 miles north, depend on their ventilation; if you manage a surgery, clinic or care home near Fortis Green, yours matters too.

Fortis Green is about 1 mile south-east of Finchley, in Greater London. Across the N10 area, we can carry out AHU cleaning at your premises. Across Greater London, we cover 764 places, Fortis Green among them. Our London page covers sites nearby (7 miles or so).

Work in N10, N2 and N6 follows the same survey, fixed quote and written report as everywhere else we cover. Whether your site is on Hill Road, Durham Road and Steeds Road or a nearby road, our technicians can take on the work. With the A504 close by, Fortis Green is simple for us to get to for AHU cleaning. Neighbouring places we cover for AHU cleaning include Muswell Hill (1 mile east), East Finchley (1 mile west), Highgate (1 mile south), Crouch End (1 mile south-east) and Hampstead Garden Suburb (2 miles south-west). Within a short drive, we also cover London (7 miles south), City of Westminster (5 miles south), Marylebone (5 miles south), Kensington (7 miles south), St Pancras (5 miles south) and Shoreditch (6 miles south-east).

Near you in Fortis Green

Around Fortis Green, our work takes us to kitchens and buildings near Tollington School, Cherry Tree Wood and The Clissold Arms. The closest station to Fortis Green is Alexandra Palace station, about 1.4 miles east. A little further out are Kenwood House (1.6 miles south-west) and Grand Arcade (1.8 miles north-west). Not far away are Highgate Hill and Glebelands Local Nature Reserve.

Map of Fortis Green © OpenStreetMap contributors
BESCA Vent Hygiene EliteMember, cleaning to BESA TR19® Grease
CHAS · SafeContractorISO 9001 and fully insured
Certificate and photo reportWith every clean
24/7 emergency calloutEvenings, nights and weekends
Since 2009South East England and London