Greater London · Air handling unit cleaning
Air handling unit cleaning in Arnos Grove, Greater London
We cover Arnos Grove for air handling unit cleaning. Out-of-hours visits, a fixed quote and a written report with photos on every job.
- Stale or musty smells from the ventilation
- Units that have only ever had filter changes
- Dust built up on fan impellers
AHU cleaning in Arnos Grove, done properly
We clean air handling units for buildings in Arnos Grove and across Greater London, working to TR19® Air, in offices, schools, hospitals, care homes and retail. The work is timed around when the system can be switched off, including evenings, nights and weekends. The work covers internal panels, drain trays and heating and cooling coils, and common reasons people get in touch are condensate trays that won’t empty and air handling units never cleaned inside.
In London, plant rooms are often in basements or on roofs reached through occupied floors, so ventilation cleaning in Arnos Grove is normally planned out of hours. Parking and loading are agreed with the building in advance.
Our accreditations include CHAS, SafeContractor and ISO 9001, and we’re fully insured. On top of that, we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we’ve been trading since 2009.
- Place
- Arnos Grove (N11, N14, N13)
- Region
- Greater London
- Reporting
- Report and pictures after the visit
- Quote
- A fixed quote up front
- When we work
- After hours by arrangement; emergencies any time
- Telephone
- 0345 646 2711
- Page updated
- 30 October 2026
What happens if it’s left?
If people in a building in Arnos Grove complain about stuffy or smelly air, the AHU is worth looking at. Cleaning it deals with the cause rather than the symptom. Leaving it on a busy London site only adds to the work.
You won’t find a price list here, because each job is priced on what it involves. Call for a fixed quote, and we will talk you through it.
What you get with us
- Out-of-hours work and a 24/7 emergency line
- Trading since 2009
- Survey first, then a fixed quote
- Fixed quotes from a survey or pictures
See what affects the cost and our accreditations.
Part by part
Internal casing and panels
We open each section through its doors and close them securely when we’re done, and check every one is shut.
Filters
Filters are the first line of defence in the unit. As part of the clean, filters are checked and cleaned or replaced as agreed, and the housing around them is cleaned too.
What we do, step by step
We turn up at the time agreed with you, often in the evening, overnight or at the weekend so the site keeps working. Anything that needs to be off for the work is switched off and left to cool first, and floors and nearby surfaces are sheeted. On site, it takes from a few hours for a compact unit to a day or more for a large one. For a job in Arnos Grove, tell us about loading bays, permits, lifts and roof access when you book.
- First we agree when the unit can be switched off, including evenings or weekends.
- Before cleaning, each section is photographed.
- Filters, coils and internal surfaces are cleaned from intake to discharge.
- The fan and drain tray are cleaned and the drain checked.
- After photos are taken and the certificate issued.
How to prepare
- Agree a time when the area can be out of use
- Make sure someone can let us in and lock up afterwards
- Tell us where we can park and unload
How to get a quote
Need a price for AHU cleaning? Please ring 0345 646 2711, or email photos with a few details about the site. We will explain what we’d do and send a fixed quote before anything is booked.
Read more
What AHU cleaning cannot fix
It’s worth knowing the limits before booking:
- Airflow problems caused by the system’s design
- Mechanical faults with motors, belts or bearings
- Controls and BMS settings that run the unit
Not sure which it is? You can give us a ring on 0345 646 2711 or drop us a line and we will tell you honestly before you book.
Where we work
- Supply and extract fans
- Heating and cooling coils
- Internal panels
- Dampers and louvres
- Drain trays
- Filter sections
Common problems we fix in Arnos Grove
Planned maintenance often covers belts, motors and filters but not cleaning. So a unit can be well maintained and still dirty.
These are the problems we see most often:
- Plant that needs cleaning after a refit
- Blocked condensate drains and slimy trays
- Dust-coated heating and cooling coils
- Odours coming through the supply air
Workplaces around New Southgate station with an air handling unit need the filters, coils and drain tray looked at, as well as the ducts.
What to look for in a quote
- What paperwork you get at the end
- How they set the interval to the next visit
- What’s included in the scope, part by part
- Whether a survey comes first
Staff cleaning versus specialist work
Good housekeeping makes our visits easier, not unnecessary. Regular in-house cleaning slows the build-up, but the parts you can’t see still need a specialist at the right interval.
In-house cleaning and specialist cleaning do different jobs. 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. Reaching it takes a specialist with the right equipment.
Looking after it afterwards
After the visit, a few habits help the work last:
- Keep inspection doors on the unit in good order
- Check the drain tray is emptying during routine visits
- Note any water around the unit or leaks below it
- Store the TR19 paperwork where auditors can find it
Stick to the filter change schedule, because good filters protect everything downstream. Record each change in the maintenance log.
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.
Ventilation in Arnos Grove buildings
Going by the FSA’s register, there are about 42 schools, colleges and universities and about 60 caring premises (care homes, nurseries and hospitals) serving food across Arnos Grove and its immediate surroundings (about a mile and a half). Where buildings like these have air handling units, filters, coils and drain trays need regular attention. Ventilation cleaning in London buildings is typically planned for evenings or weekends. Greentrees Hospital is the nearest hospital, about 1.3 miles east of Arnos Grove. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
Hospitals such as Greentrees Hospital (about 1.3 miles east) show how much a building can rely on clean ventilation, and smaller healthcare sites near Arnos Grove are no different. For schools like Bowes Primary School, the holidays are the usual time to inspect and clean ventilation.
Arnos Grove is about 3 miles north-east of Finchley, in Greater London. For AHU cleaning in and around Arnos Grove, it’s easy to get a fixed quote: please give us a ring on 0345 646 2711 or drop us a line. Our area covers London and the South East, including Arnos Grove. Across Greater London, we cover 764 places, Arnos Grove among them. For sites nearby, see our London page (8 miles or so).
Here we cover the N11, N14 and N13 postcode area for AHU cleaning. Streets in the area include Oak Lane, High Road and York Road, and we cover them all for AHU cleaning. Being close to the A109 and A1004, Arnos Grove is easy for our technicians to reach for AHU cleaning. We also cover the places around Arnos Grove: New Southgate (1 mile west), Bounds Green (1 mile south), Southgate (1 mile north), Palmers Green (1 mile east) and Oakthorpe Park (1 mile east). We also work in nearby towns such as London (8 miles south), City of Westminster (7 miles south), Marylebone (7 miles south), Kensington (9 miles south), St Pancras (6 miles south) and Shoreditch (7 miles south).
Around Arnos Grove
Locally, jobs take us to businesses close to The Ranelagh pub, Broomfield School and Broomfield Park and the streets around them. The closest station to Arnos Grove is New Southgate station, roughly 0.6 miles west. Nearby you’ll also find Broomfield House Museum (0.5 miles east) and The Mall Wood Green (1.7 miles south-east). Green spaces nearby include Highgate Hill and Darland's Lake.
Places near Arnos Grove
Other services in Arnos Grove
FAQs for Arnos Grove
Can parking be tricky for a job in Arnos Grove?
Tell us where a van can stop near your site in Arnos Grove, and about any building rules on loading. Night visits tend to make loading easier on London streets.
Can you clean school ventilation in Arnos Grove during the holidays?
Yes, out-of-term visits are normal for schools. The FSA’s register shows about 42 schools and colleges with food registrations within roughly a mile and a half of Arnos Grove. Booking early in the term gives the best choice of holiday dates.
What if parts of the system cannot be reached?
We record them on the report, with a note of where it is, and we tell you what would make it reachable, such as extra access panels in ductwork.
When should our AHU next be cleaned?
It depends on the unit, the filters and how the building is used. Regular inspection shows when it’s due, and we will suggest an interval after the first clean.
Which kinds of sites do you work on?
All kinds of commercial and public premises: kitchens, offices, schools, healthcare, retail, leisure and food production. We fit the work around how the site operates.
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 it takes a risk-based approach.
How far ahead should we book?
For planned work, earlier is better, especially if the next clean or test is due soon. Emergencies are different, because our line is open 24/7.
What do you clean inside the unit?
Filters, coils, drain trays, the fan and the internal surfaces are all covered. Filters are cleaned or changed as agreed in the quote.