Greater London · Air handling unit cleaning
Air handling unit cleaning in Lambeth, Greater London
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Lambeth, surveyed first and signed off with a written report and photos. Ask us for a fixed quote.
- Intake sections clogged with outdoor debris
- Dirty coils holding back the airflow
- Units that have only ever had filter changes
What we are called out for in Lambeth
An overdue filter loads up with dirt, which cuts the airflow and can let air slip round the filter. Then the rest of the unit takes the load.
These are the problems we see most often:
- Blocked condensate drains and slimy trays
- Air handling units never cleaned inside
- Stale or musty smells from the ventilation
- Dirty coils holding back the airflow
Evelina London Children's Hospital, about 0.5 miles north, is the nearest hospital to Lambeth, and healthcare sites of every size need their supply air kept clean.
What your quote should include
- Whether the work can be done while the site is closed
- How areas they cannot reach will be recorded
- Whether the figure could change on the day
- Whether they’re fully insured
AHU cleaning in Lambeth
Think of an AHU clean as a full check-up for the ventilation. We look inside each section, clean what we find and record it with photos, so you can see the unit’s condition for yourself. The work covers drain trays, heating and cooling coils and filter sections, and common reasons people get in touch are dust built up on fan impellers and intake sections clogged with outdoor debris.
London buildings tend to keep their plant on the roof or below ground, so ventilation cleaning in Lambeth is usually planned out of hours. Parking and loading are agreed with the building in advance.
We are CHAS and SafeContractor accredited, we hold ISO 9001 and we’re fully insured. We are also a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we’ve been trading since 2009.
- Where
- Lambeth (SE11, SW1P, SW8)
- Wider area
- Greater London
- Records
- Photo report after every visit
- Price
- A fixed price before any work starts
- Hours
- Out of hours as standard, 24/7 emergency line
- Phone
- 0345 646 2711
- Page updated
- 30 October 2026
Lambeth questions
Do you work at weekends in Lambeth?
Yes, nights and weekends are routine for us. The site is handed back ready to open. Tell us your opening hours when you ask for a quote.
How do you handle parking and loading in Lambeth?
Parking and loading in London need planning, so tell us about bays, permits and building rules when you book. If the building has a loading slot system, we’ll book into it.
How often should an air handling unit be cleaned?
That’s set by inspection, in line with TR19® Air. A hard-working unit, or one serving a hospital or care home, may need cleaning more often.
Do you give a certificate after the clean?
Yes. You receive a certificate and a report showing each section before and after, with any faults we noticed.
How long does it take to clean an air handling unit?
Cleaning takes from a few hours for a compact unit to a day or more for a large one. Bigger units can be phased, so call us on 0345 646 2711 or drop us a line to talk it through.
What do you need from me for a quote?
Some photos and a quick description of the system plus the address and your hours. If we need more, we will ask.
How do you keep the site clean during the work?
We cover floors and nearby surfaces with sheeting before we start, and waste is contained as we go. Before we leave, we tidy up and clean down.
How much does AHU cleaning cost in Lambeth?
We don’t publish prices, because the cost depends on the job: the size of the system, its condition, access and when we can work. We fix the price before work begins.
More services for Lambeth
How the job changes from site to site
Heating and cooling coils
Dirt on a coil slows the air and makes it harder for the coil to heat or cool. Cleaning restores the open path through the fins.
Internal casing and panels
Damaged internal linings or loose panels can shed material into the air. We note any we find in the report.
Ventilation in Lambeth buildings
There are about 105 schools, colleges and universities, about 53 hospitals, care homes and childcare premises and about 110 hotels, B&Bs and guest houses on the FSA’s food hygiene register in Lambeth and the streets around it, up to about 1.5 miles out. Busy, occupied buildings like these are where clean supply air matters most. Evelina London Children's Hospital is the nearest hospital, about 0.5 miles north of Lambeth. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes. In London, ventilation plant is often on the roof or below ground, so the work is typically done out of hours.
If you run an office near Vauxhall station, its supply ductwork can gather dust for years before anyone looks inside. Wherever a school like Vauxhall Primary School has ducted ventilation, a half-term visit keeps the work out of lesson time.
Lambeth is about 1 mile south-west of London, in Greater London. For AHU cleaning in and around Lambeth, please give us a ring on 0345 646 2711, or send details by email for a fixed quote. Our area covers London and the South East, including Lambeth. Lambeth is one of 764 towns, villages and districts in Greater London we cover for AHU cleaning.
Postcode districts we cover here for AHU cleaning: SE11, SW1P and SW8. Local streets include Gibson Road, Langley Lane and Randall Road, all of which we cover for AHU cleaning. You’ll find Lambeth on the A3203 and A3204, so it’s easy for us to get to for AHU cleaning. If your site is just outside Lambeth, we cover Vauxhall (1 mile north), Kennington (1 mile south), Oval (1 mile south), Newington Butts (1 mile east) and St George's Fields (1 mile north-east). We also work in nearby towns such as Kensington (4 miles west), Shoreditch (3 miles north-east), Walthamstow (8 miles north-east), Hoxton (3 miles north-east), Whitechapel (3 miles north-east) and Hampstead (5 miles north-west).
Local landmarks in Lambeth
Locally, jobs take us to businesses close to The Jolly Gardeners pub, Old Paradise Gardens and Lambeth Palace Library, among other places. Nearby too are Lambeth School of Art (within half a mile south) and Lilian Baylis Technology School (within half a mile south). There’s a railway station in Lambeth itself: Vauxhall station. Nearby you’ll also find Newport Street Gallery (less than half a mile north-east) and Evelina London Children's Hospital (0.5 miles north). Open spaces near Lambeth include Bellenden Road Nature Garden and Ludgate Hill.
The process
Each visit runs to the same pattern: sheeting and protection first, isolate whatever needs isolating, carry out the AHU cleaning, tidy up and leave you the report. On site, the work takes from a few hours for a compact unit to a day or more for a large one. Expect the work in Lambeth to happen after your last customer leaves, not during trading.
- First the unit is surveyed, from pictures or a visit, and the scope agreed.
- We arrange the shutdown with your staff and sheet the area.
- Filters are dealt with as agreed, and the coils, fan and casing cleaned.
- Standing water and slime come out of the tray and the drain is checked.
- We close up the unit and send the certificate and before and after pictures.
How to prepare
- Agree a time when the area can be out of use
- Clear loose items from the work area
- Mention any sign-in, permit or induction we need
Ask for a quote
Quoting starts with a diagnosis, either from photos and details you send or from a site visit. After that, you get a fixed price for the work so you know the cost before any work starts.
Advice
Staff cleaning versus specialist work
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.
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.
When it’s something else
We won’t sell you work that does not address the problem, so these are the things it won’t cover:
- Building management system faults
- Ductwork downstream of the unit, which is a separate clean
- A system that’s undersized for the building
Not sure which it is? You can call us on 0345 646 2711, or email photos and we will tell you honestly before you book.
Where we work
- Supply and extract fans
- Filter sections
- Dampers and louvres
- Internal panels
- Heating and cooling coils
- Drain trays
Leave it or put it right?
Dirt left in an air handling unit does not stay in the unit. It’s carried through the ductwork and out of the grilles, which is why the unit and the ducts are best cleaned together. A booked night’s work in Lambeth costs you no trading time; an unplanned closure does.
Combining work into one visit or one programme often makes better use of the time. Mention every system or site you need covered and we’ll price it together.
Why choose Duct Doctor in Lambeth
- Every job surveyed first
- One contact for all your sites in London and the South East
- Work around your opening hours, with 24/7 emergency cover
- Trading since 2009
How we price AHU cleaning
Sites vary more than people expect. What affects the quote:
- Site rules, permits and inductions
- The number of sites or systems
- Travel, parking and unloading
- Access, including roofs, risers and ceiling voids
Whatever the type of site, the quote works the same way: how much there is, how we reach it, what state it’s in and when we can work. Ask for a fixed quote and we’ll explain each part.
What to send for a quote
When you contact us, these details help:
- Photos showing the whole system and its surroundings
- The roof, plant room or outside wall the system runs to
- Detail shots of panels, filters and grilles
- Problems your staff have spotted
Some systems can be priced from pictures; others need a survey. Big or complicated sites, and systems that are hard to see in pictures, get a survey first. Either way, you get a fixed price before we start.