Greater London · Air handling unit cleaning
Lissenden Gardens AHU cleaning
Looking for AHU cleaning in Lissenden Gardens? We survey first, send you a fixed quote and work around your opening hours, then sign off with a report and pictures.
- Leaves and litter drawn into the unit
- Units that have only ever had filter changes
- Air handling units with blocked filters
What affects the cost of AHU cleaning
Sites vary more than people expect. What affects the quote:
- How big the system is
- What state the system is in
- Where the site is and how we reach it
- The times the site is available
You won’t find a price list here, because each job is priced on what it involves. For a fixed quote, ring 0345 646 2711, or email photos, and we’ll explain what it covers.
What we need to know
A few details help us quote accurately. With your enquiry, please include:
- The postcode and the type of business
- Any symptoms, from odd noises to smells or leaks
- The times we could work without disrupting the site
- The paperwork from the last visit, if you have it
To get a fixed quote, phone us on 0345 646 2711 or drop us a line with the site type, your trading hours and a short description of the system. Photos and the last report, if you have one, make the quote quicker. We normally come back within one working day.
AHU cleaning in Lissenden Gardens, done properly
Units vary a lot in size, age and layout, whether it’s a compact unit in a ceiling void or a big unit on the roof. We look at the unit first, from pictures or a site visit, and send you a fixed quote before any cleaning starts. We’re often asked to deal with intake sections clogged with outdoor debris and units that have only ever had filter changes, on drain trays, heating and cooling coils and dampers and louvres.
London offices and flats often have ductwork added through successive refits, leaving sections that are hard to reach and seldom cleaned. An inspection first shows where cleaning is needed in a building in Lissenden Gardens.
Our accreditations include CHAS, SafeContractor and ISO 9001, and we are fully insured. On top of that, we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, trading since 2009.
- Location
- Lissenden Gardens (NW5, NW3, N19)
- Wider area
- Greater London
- Reporting
- Photo report after each visit
- Price
- A fixed quote up front
- Hours
- Nights, weekends or holidays to suit you
- Call
- 0345 646 2711
- Checked
- 30 October 2026
How the job changes from site to site
Internal casing and panels
The inside walls and floor of the casing collect dust and debris. Each section is cleaned from the intake through to the outlet.
Heating and cooling coils
Coil fins are close together and catch the dust the filters miss. They’re cleaned using methods that won’t bend or flatten the fins.
What happens if it’s left?
Standing water in a drain tray doesn’t clear itself. Left alone, it can overflow, leak into the plant area or ceiling below and spread smells through the system. Clearing it now is a much smaller job. Planning ahead in Lissenden Gardens lets you pick a quiet night rather than lose a busy one.
No two sites are the same, so each one gets its own fixed quote. Size, access, the condition of the system and when we can work all play a part.
Why book with us
- One contact for all your sites in London and the South East
- Accredited under CHAS and SafeContractor, with ISO 9001
- Fully insured
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
Read our cost guide and how to check a contractor.
Common problems we fix in Lissenden Gardens
Air handling units are normally tucked away on roofs, in plant rooms or above ceilings, so they’re easy to forget about. Months can pass without anyone looking inside.
Most sites get in touch when they notice one of these:
- Leaves and litter drawn into the unit
- Air handling units due a clean after building work
- Air handling units with blocked filters
- Odours coming through the supply air
For schools like Parliament Hill School, the holidays are the usual time to inspect and clean ventilation.
What your quote should include
- Whether the price is fixed
- How areas they cannot reach will be recorded
- If they look at the system before pricing
- What hours they’ll be on site
Lissenden Gardens: your questions answered
Do you clean school ventilation in Lissenden Gardens in the holidays?
Yes, holiday work suits schools best. The FSA’s register shows about 69 schools and colleges with food registrations within roughly a mile and a half of Lissenden Gardens. Booking early in the term gives the best choice of holiday dates.
Does London parking affect a job in Lissenden Gardens?
London parking can be tight, so details of loading bays and permits help. Night visits tend to make loading easier on London streets.
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’ll advise on what to do next.
Do you look at the system first?
Yes. We always survey first, either from pictures and details you send or on a site visit. A fixed quote follows.
What happens if you cannot reach some of it?
We never leave them off the paperwork. You’ll know exactly which parts weren’t reached and why, and we can quote to improve the access.
Which accreditations do you hold?
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.
How much does AHU cleaning cost?
There’s no set price, as it depends on the job: how big it is, what state it’s in, how we reach it and the working hours. We fix the price before work begins.
Do you give a certificate after the clean?
Yes. You get a TR19® certificate plus before and after pictures. Keep them in the maintenance log.
Ventilation in Lissenden Gardens buildings
There are about 69 schools, colleges and universities, about 59 care, childcare and hospital premises and about 25 hotels, B&Bs and guest houses on the FSA’s food hygiene register within about 1.5 miles of central Lissenden Gardens. Busy, occupied buildings like these are where clean supply air matters most. Lissenden Gardens’s nearest hospital, Royal Northern Hospital, is about 1.2 miles east. Clean air matters most where people are unwell, and that’s as true in a care home as in a hospital. In London, ventilation plant is often on the roof or below ground, so the work is normally done out of hours.
If you manage offices or shops near Gospel Oak station, their ventilation can be inspected and cleaned out of hours. If you run a surgery, dental practice or care home near Lissenden Gardens, clean ventilation matters as much to you as to a hospital like Royal Northern Hospital (about 1.2 miles east).
Lissenden Gardens is about 1 mile east of Hampstead, in Greater London. Sites in Lissenden Gardens get the same service as everywhere we cover: a survey first, a fixed quote, work timed around your hours and a report with photos. Lissenden Gardens is one of 764 towns, villages and districts in Greater London we cover for AHU cleaning.
Postcode districts we cover here for AHU cleaning: NW5, NW3 and N19. You’ll find streets such as Rona Road, Dale Road and Fleet Road, all of which we cover for AHU cleaning. Neighbouring places we cover for AHU cleaning include Gospel Oak (1 mile south), Dartmouth Park (1 mile north-east), Tufnell Park (1 mile east), Kentish Town (1 mile south) and Chalk Farm (1 mile south). Within a short drive, we also cover London (5 miles south-east), City of Westminster (3 miles south), Marylebone (3 miles south), Kensington (5 miles south-west), St Pancras (3 miles south-east) and Shoreditch (4 miles south-east).
Around Lissenden Gardens
In Lissenden Gardens, that means kitchens and buildings near Parliament Hill, The Royal School and Gospel Oak Primary School, among other places. Nearby too are The Bull and Last pub (within half a mile north-east) and Cecil Sharp House (1.3 miles south). Lissenden Gardens has its own railway station: Gospel Oak station. Nearby you will also find Royal Northern Hospital (1.2 miles east) and Montfichet's Tower (3.7 miles south-east). Open spaces near Lissenden Gardens include Parliament Hill and The Long Water.
What staff can safely do
If your staff spot something between visits, like drips, unusual noise, smells or damaged filters, it’s best reported rather than tackled in-house. We can diagnose it and quote.
Staff cleaning does not replace a specialist visit; it supports it. Clean filters and tidy surfaces slow the build-up, but the parts you cannot see still need a specialist at the right interval.
Between visits
No system stays clean for ever, but care slows the build-up. Our tips:
- Book the next check in line with the report
- Do not store bins or materials near the intake
- Watch for drips or damp patches near the plant
- Stick to the filter change plan
The report suggests a date for the next inspection or clean, based on what we found. TR19® Air is risk-based, so the interval depends on the unit and how the building is used.
Keep the unit’s doors and panels in working order. Sections that are awkward to open are the ones that get skipped.
Also near Lissenden Gardens
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The process
Each visit runs to the same pattern: protect the area, isolate whatever needs isolating, carry out the AHU cleaning, tidy up and leave you the report. The visit itself takes half a day to a full day per unit, with large plant planned over several shifts. In a London area like Lissenden Gardens, parking, loading and building access are planned before the day of the work.
- First we agree when the unit can be switched off, including evenings or weekends.
- We take before photos of each section of the unit.
- We work through the unit from the intake to the outlet.
- We finish with the fan section and the drain tray.
- We take after photos and issue the certificate and report.
Getting ready for the visit
- Let us know when the site is closed or quiet
- Plan for cooking equipment or plant to be off before we arrive
- Mention any locked doors, roof access or ceiling voids
How to get a quote
Need a price for AHU cleaning? Please give us a ring on 0345 646 2711 or use the quote form with a few details about the site. We will talk you through the work and send you a fixed quote before you commit to anything.