Greater London · Ventilation duct cleaning
Ventilation duct cleaning in Northwood, Greater London
Ventilation duct cleaning for commercial sites in Northwood and across Greater London. CHAS, SafeContractor and ISO 9001, and fully insured.
- Dirty diffusers dropping dust into rooms
- Toilet and washroom extracts full of fluff
- Supply ducts with years of dust inside
When it’s something else
Some problems need a different service or another trade:
- Grease in kitchen extract systems, cleaned to TR19® Grease instead
- Damp or mould problems coming from the building fabric
- Ducts that are damaged, corroded or leaking and need replacing
If you’re not sure, just phone us on 0345 646 2711 or drop us a line and we’ll give you a straight answer.
Where we work
- Offices and schools
- General extract ductwork
- Toilet extract systems
- Grilles and diffusers
- Supply ductwork
- Hospitals and care homes
Ventilation duct cleaning in Northwood, done properly
When the work is finished, you get a TR19® certificate and before and after photos. It shows what was cleaned, anything we couldn’t reach and when the system should next be inspected, so you have it all on record. If you’re dealing with duct runs that can’t be reached for cleaning and systems with no record of inspection or cleaning, we can put it right, from grilles and diffusers, supply ductwork and offices and schools onwards.
Across London, offices, hotels, schools and healthcare buildings rely on mechanical ventilation, much of it supplied through air handling units on roofs or in basements. In a building in Northwood, dust and debris build up in the units and ductwork over time.
Accreditations are easy to claim and worth checking. Ours are BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001, and we are fully insured.
- Location
- Northwood (HA6)
- Region
- Greater London
- Reporting
- Photo report after each visit
- Quote
- A fixed price before any work starts
- Working hours
- Overnight and weekend work, 24/7 emergency callout
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
For landlords and multi-site operators
Running several sites is easier with one contractor. We work across London and the South East, so a run of sites can go into one programme and kept to a regular schedule.
Managing agents often deal with us directly. Tell us the site, the work and the access arrangements and we’ll come back with a fixed quote.
What affects the quote in Northwood
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The condition we find in the survey
- Site requirements such as sign-in and permits
- When the work can happen, such as evenings, overnight or weekends
- The size of the system
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 any work starts.
Helping us quote
Photos let us diagnose from a distance. The most useful are:
- The times we could work without disrupting the site
- Wide pictures of the system and the area around it
- Problems your staff have spotted
- The roof, plant room or outside wall the system runs to
For ventilation duct cleaning in Northwood, call 0345 646 2711 or use the quote form. Let us know the site type and the opening hours, and send photos or your last report if you can. We usually send a fixed quote within one working day.
What your team can do, and what needs us
Day-to-day cleaning is something your team can do: 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.
A few tasks are always specialist work: entering ducts, working on fans, testing dampers and taking grease readings call for the right kit, training and safe access. Leave those to us.
Ventilation in Northwood buildings
The FSA’s food hygiene register lists about 24 schools, colleges and universities and about 29 hospitals, care homes and childcare premises with registered kitchens or food service within roughly a mile and a half of the centre of Northwood. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. London plant rooms are often on roofs or in basements reached through occupied floors. About 1 mile south of Northwood is Northwood and Pinner Cottage 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.
If you manage a school such as Frithwood Primary School, ventilation cleaning is best booked for the holidays.
Northwood is about 3 miles south-east of Rickmansworth, in Greater London. Whatever kind of site you run in Northwood, we can take on ventilation duct cleaning. Visits can be booked for evenings, overnight or weekends so the site keeps running. Our Greater London coverage runs to 764 places, Northwood among them. Our London page covers sites nearby (16 miles or so).
We work across the HA6 postcode area for ventilation duct cleaning and the streets around it. We cover sites on Little Stream Close and Sandy Lodge Way and nearby roads. Other places close to Northwood include Eastbury (1 mile north-east), Moor Park (1 mile north-west), Batchworth Heath (1 mile west), Batchworth (2 miles north-west) and Holywell (2 miles north). Within a short drive, we also cover City of Westminster (14 miles south-east), Marylebone (14 miles south-east), Kensington (12 miles south-east), St Pancras (14 miles south-east), Hampstead (11 miles south-east) and Ruislip (3 miles south).
Near you in Northwood
We work in commercial kitchens and buildings around King George V Playing Fields, The Gate Public House and London School of Theology, among other places. The closest station to Northwood is Carpenders Park station, roughly 1.7 miles north-east. A little further out are Harlequin Centre (2.9 miles north-east) and Heath Robinson Museum (2.2 miles south-east). The countryside around Northwood includes Dews Farm Sand Pits and Tumbling Bay.
Between visits
Think of this as the after-treatment advice, in brief:
- Keep to the inspection interval in your report
- Keep grilles and diffusers dusted
- Do not run the ventilation while builders are sanding or cutting
- Keep the TR19 certificate and photo report in the maintenance log
Change filters on schedule so the clean ducts stay clean. Overdue filters are the quickest way to undo a duct clean.
Keep filters changed on time. Overloaded or poorly seated filters let dust straight through.
What we are called out for in Northwood
Damp ducts hold onto dirt. Condensation and leaks turn loose dust into a stubborn layer, and it becomes harder to remove.
Common reasons sites call us include:
- Musty smells from the ventilation
- Supply ducts with years of dust inside
- Systems missing access panels
- Grilles and diffusers streaked with dirt
Northwood and Pinner Cottage Hospital, about 1 mile south, is the nearest hospital to Northwood, and healthcare sites of every size need their supply air kept clean.
Comparing quotes
- Whether VAT is included
- Whether they’re fully insured
- What’s included in the scope, part by part
- Whether the work can be done while the site is closed
The process
Your trading hours come first. We book the visit for a time the area is closed, whether that’s an evening, overnight or a weekend. When the team arrives, the work area is protected and the relevant equipment is switched off to cool, and the work takes from one overnight visit to a phased programme over several weeks. Managed blocks in London often need contractors booked in ahead, and we are happy to deal with the agent directly for a site in Northwood.
- First we plan when the work can happen, often out of hours.
- Access panels are opened along each run.
- We photograph the ducts, then clean each section in turn.
- We clean the grilles and diffusers and put them back.
- We take after photos and send the certificate and report.
Before we arrive
- Arrange a key holder or contact on site
- Plan for cooking equipment or plant to be off before we arrive
- Let us know about permits to work or site inductions
Get a fixed quote
Want a quote for ventilation duct cleaning? Please call 0345 646 2711, or email photos with a few details about the site. We will talk you through the work and give you a fixed quote before you commit to anything.
Advice
FAQs for Northwood
Does London parking affect a job in Northwood?
We plan it in advance, so let us know about loading bays, permits and access rules at the building. If the building has a loading slot system, we’ll book into it.
Can the work in Northwood be done at night or at weekends?
Yes, we can come after you close and finish before you open. That way a site in Northwood doesn’t have to lose a day’s trading. Just give us a ring on 0345 646 2711 or use the quote form with your opening times and we will plan around them.
How often should ventilation ductwork be cleaned?
TR19® Air is risk-based, so cleaning follows inspection rather than a fixed calendar. Each report recommends when the system should next be inspected.
Which sectors do you work in?
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.
Who is responsible for fire safety on the premises?
It depends on the building. Under the Fire Safety Order 2005, it’s the responsible person, which may be the employer, owner, landlord, facilities manager or managing agent.
Can we book visits on a schedule?
Yes. Scheduled maintenance plans are part of what we do, set at the interval the system needs. Each report recommends when the next visit should be.
What is TR19?
TR19® is the BESA specification for keeping ventilation systems clean. TR19® Grease, a standalone specification since 2019, covers grease in kitchen extract systems, and TR19® Air covers general supply and extract systems.
Can one contract cover all our sites?
Yes. Our area covers London and the South East, so sites at different addresses can be planned together on one programme. Each site gets its own report and pictures.