Greater London · Air handling unit cleaning
Air handling unit cleaning in Dollis Hill, Greater London
Air handling unit cleaning in Dollis Hill, surveyed first and signed off with a written report and photos. Call for a fixed quote.
- Dirty fans and fan housings
- Coils clogged with dust and debris
- Air handling units due a clean after building work
How we handle AHU cleaning in Dollis Hill
Our AHU cleaning covers sites in Dollis Hill and the rest of Greater London, in offices, schools, hospitals, care homes and retail. Units are cleaned when the site can spare them, often evenings, overnight or weekends. Typical jobs include dirty fans and fan housings and debris and leaves in the fresh air intake, on supply and extract fans, filter sections and dampers and louvres.
London buildings tend to keep their plant on the roof or below ground, so work in Dollis Hill is often done in the evening or at weekends. Loading and parking are planned with the building first.
Insurers, fire officers and environmental health officers all look at records. That is why every job is written up in a report with pictures, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Place
- Dollis Hill (NW2, NW10, NW9)
- Region
- Greater London
- Records
- Photo report after every visit
- Quote
- A fixed quote up front
- When we work
- Evenings, overnight and weekends; 24/7 emergencies
- Phone
- 0345 646 2711
- Checked
- 30 October 2026
Dollis Hill questions
Can ventilation in schools around Dollis Hill be cleaned out of term?
Yes. Half-terms and the summer break are the natural time for school work. Food Standards Agency records list about 40 schools, colleges and universities with registered kitchens within about a mile and a half of Dollis Hill. You can call us on 0345 646 2711 or email us with the dates the site is empty.
Can you come to Dollis Hill after we close?
Yes, evening, overnight and weekend work is normal for us. The site is handed back ready to open. Your opening times are the first thing we ask for.
What if parts of the system can’t be reached?
The report shows them clearly. In ductwork, new access panels are often the answer, which we can install.
What is TR19?
TR19® is BESA’s specification for ventilation hygiene. Since 2019, TR19® Grease has been a standalone specification for grease in kitchen extract systems, and TR19® Air covers general supply and extract systems.
Do you have a 24/7 line?
Yes. For anything urgent, such as a fan failure or damage after a fire, ring the 24/7 line, and we will advise on what to do next.
What accreditations do you have?
BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001. We’re fully insured and have been trading since 2009.
Which kinds of sites do you work on?
Any commercial site with kitchens or ventilation, from a single café to a large school. Hotels, schools, care homes, offices, shops and leisure sites are all part of our work.
Do you work with multi-site operators?
Yes. We work across South East England and London, so sites at different addresses can be planned together as one programme. Each site gets its own report and pictures.
Staff cleaning versus specialist work
Your own staff can handle the daily basics: wiping canopies, washing grease filters and recording it in a log. What they can’t safely do is clean inside the ductwork, the fan or the risers, which is where we come in.
Some jobs should never be done in-house: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease call for the right kit, training and safe access. Leave those to us.
Different parts, different methods
Drain trays
Standing water in a tray sits right where the air passes. We clean it and report anything about the tray or drain that needs fixing.
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.
Ventilation in Dollis Hill buildings
Going by the FSA’s register, there are about 40 schools, colleges and universities, about 37 caring premises (care homes, nurseries and hospitals) and about 6 hotels, B&Bs and guest houses serving food within about 1.5 miles of central Dollis Hill. Buildings like these often rely on mechanical ventilation, which TR19® Air covers. St Andrew's Hospital is the nearest hospital, about under half a mile south of Dollis Hill. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale. In London, ventilation plant is often on the roof or below ground, so the work is normally done out of hours.
School buildings such as Our Lady of Grace Catholic Junior School are usually done in the holidays, so classrooms aren’t disturbed. For workplaces around Brent Cross West station with mechanical ventilation, cleaning can be done in the evening or at weekends. St Andrew's Hospital, about less than half a mile south, is the nearest hospital to Dollis Hill, and healthcare sites of every size need their supply air kept clean.
Dollis Hill is about 1 mile north-east of Neasden, in Greater London. Across the NW2 area, we cover AHU cleaning for commercial sites. Across Greater London, we cover 764 places, and Dollis Hill is one of them. Our London page covers sites nearby, about 7 miles away.
Every address in NW2, NW10 and NW9 is covered for AHU cleaning, from the main roads to the quietest streets. You’ll find streets such as Brook Road, Lane Close and Crest Road, all of which we cover for AHU cleaning. Other places close to Dollis Hill include Staples Corner (1 mile north-east), Neasden (1 mile south-west), Cricklewood (1 mile south-east), Willesden (1 mile south) and Brent Cross (1 mile north-east). Further out, we also cover London (7 miles south-east), City of Westminster (5 miles south-east), Marylebone (5 miles south-east), Kensington (5 miles south), St Pancras (6 miles south-east) and Shoreditch (7 miles east).
Landmarks near Dollis Hill
Typical jobs here are in premises near Woodfield School, The Crown Public House and Gladstone Park. There’s a railway station in Dollis Hill itself: Brent Cross West station. Nearby you will also find Brent Cross Shopping Centre (1 mile north-east) and St Andrew's Hospital (under half a mile south). Not far away are Darland's Lake and Parliament Hill.
Towns and villages near Dollis Hill
More services for Dollis Hill
What happens on the day
Everything the job needs comes with us, from protective sheeting to tools and access equipment. All we need from you is clear access and the right equipment switched off. 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 Dollis Hill is usually done overnight, early in the morning or at weekends.
- We start with a survey of the unit and a fixed quote for the work.
- The unit is shut down with your site team and the area protected.
- Filters, coils, fan section and casing are cleaned in turn.
- We clean out the drain tray and make sure it drains.
- A TR19® certificate and photo report follow the clean.
Before we arrive
- Let us know how we reach the system, including roofs, risers and plant rooms
- Tell us where we can park and unload
- Allow time for equipment near the work to be turned off and cool down
Ask for a quote
There’s no standard price list, because every site is different. Instead, we look at your site first, from photos or a survey, and then give you a fixed quote. To start, ring 0345 646 2711 or use the quote form.
Read more
When it’s something else
Before you book, it helps to know what’s not included:
- Mechanical faults with motors, belts or bearings
- The supply and extract ducts, quoted separately
- Problems with the unit’s controls or sensors
If in doubt, phone us on 0345 646 2711 or send us an email and we will say what we think.
Where we work
- Drain trays
- Internal panels
- Supply and extract fans
- Dampers and louvres
- Filter sections
- Heating and cooling coils
Landlords, agents and facilities managers
Landlords, managing agents and facilities managers book us, not only the businesses that use the systems. Where a system serves more than one tenant, such as a shared riser, it helps to agree who arranges the work, and we can quote for the whole system.
If you look after several sites, we can plan visits across the whole estate and price them together. Every building has its own written report, so records stay tidy.
Keeping the system healthy
Simple habits between visits make a real difference. Our advice:
- Store the TR19 paperwork where auditors can find it
- Change filters on schedule and log each change
- Diary the inspection date recommended in the report
- Report stiff or damaged access doors
We recommend when the unit should next be inspected or cleaned, based on what we found. Under TR19® Air the timing is set by inspection and risk, not a fixed calendar.
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.
Leave it or put it right?
A clogged coil or dirty fan makes the unit work harder for the same airflow. The result is extra wear and a building that does not feel as comfortable, and a planned clean is far less disruptive than a breakdown. A booked night’s work in Dollis Hill costs you no trading time; an unplanned closure does.
When the work has to happen, how we reach it and how big the site is all affect the cost. We take each of them into account and give you a fixed price before we start.
Why Dollis Hill businesses choose us
- We diagnose before we treat
- In business since 2009
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Out-of-hours work and a 24/7 emergency line
See our cost guide and our accreditations.