Greater London · Air handling unit cleaning
Air handling unit cleaning in Honor Oak, Greater London
AHU cleaning for Honor Oak and the surrounding area: diagnosis first, then a fixed quote, the work and a report with photos. Ask us for a fixed quote.
- Dust built up on fan impellers
- Coils clogged with dust and debris
- Drain trays holding standing water
AHU cleaning in Honor Oak, done properly
Coils are where a lot of the dirt ends up. Dirt on the fins holds back air and makes the unit work harder to do the same job. We clean coils with methods suited to their condition, taking care not to damage the fins. The work covers drain trays, heating and cooling coils and internal panels, and people most often call us about units that have only ever had filter changes and filters that are clogged or overdue.
London buildings often depend on air handling units in plant rooms or on the roof to supply fresh air. For a building in Honor Oak, dust settles in the units and ducts year after year.
Nothing is signed off by word of mouth: a written report, dated and illustrated with pictures, and for TR19® Grease cleans, a certificate issued through the BESCA VHE portal. It shows what was done and what, if anything, couldn’t be reached.
- Location
- Honor Oak (SE23, SE22, SE4)
- Wider area
- Greater London
- Records
- Photo report after each visit
- Quotes
- Fixed quote, normally within a working day
- When we work
- Out of hours as standard, 24/7 emergency line
- Call
- 0345 646 2711
- Updated
- 30 October 2026
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, so cleaning the ducts without the unit only goes so far. Every month a London system goes without attention adds to what has to be done later.
Leaving it longer rarely makes the work cheaper. Problems in a system tend to grow, and a neglected system can mean more work. If you are not sure what’s needed, phone us on 0345 646 2711, or send details by email for straight advice and a fixed quote.
What you get with us
- A written report with photos after every visit
- We diagnose before we treat
- In business since 2009
- One contact for all your sites in London and the South East
Read our cost guide and our accreditations and certificates.
Towns and villages near Honor Oak
Also in Honor Oak
Staff cleaning versus specialist work
A few tasks are always specialist work: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease need training, the right equipment and safe access. That’s our job.
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. That part needs specialist access and equipment.
Keeping the system healthy
Think of this as the after-treatment advice, short and simple:
- Report musty smells from the vents right away
- Stick to the filter change plan
- Make sure condensate is draining away
- Book the next check in line with the report
Restart the unit with your site team or maintenance contractor once we’ve finished. Keep an eye on the condensate drain over the next few days to confirm water is draining away.
Check drain trays and condensate drains during routine maintenance. A drain that’s cleared early never gets to the slime stage.
Honest limits
Before booking, it helps to know what’s not included:
- Controls and BMS settings that run the unit
- Faulty motors, drives or bearings
- Dirty ducts beyond the unit itself
If in doubt, call 0345 646 2711, or send details by email and we’ll say what we think.
Parts of the system we cover
- Internal panels
- Dampers and louvres
- Heating and cooling coils
- Supply and extract fans
- Drain trays
- Filter sections
Signs you need AHU cleaning in Honor Oak
Most units live out of sight on roofs, in plant rooms or in ceiling voids, so they’re easy to forget about. Months can pass without anyone looking inside.
Clients usually contact us after spotting something like this:
- Plant that needs cleaning after a refit
- Leaves and litter drawn into the unit
- Plant that has been serviced but not cleaned
- Coils clogged with dust and debris
Healthcare buildings such as Dulwich Community Hospital, about 1.4 miles north-west, depend on their ventilation; if you manage a surgery, clinic or care home near Honor Oak, yours matters too.
What to look for in a quote
- How areas they can’t reach will be recorded
- What paperwork you get at the end
- Whether VAT is included
- Whether the figure could change on the day
AHU cleaning in Honor Oak: local notes
Food Standards Agency records list about 71 schools, colleges and universities and about 76 hospitals, care homes and childcare premises registered as food businesses within 1.5 miles or so of the middle of Honor Oak. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. Honor Oak’s nearest hospital, Dulwich Community Hospital, is about 1.4 miles north-west. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale. Getting kit to a London plant room typically means lifts, stairs and an agreed loading slot.
Workplaces around Honor Oak Park station with an air handling unit need the filters, coils and drain tray looked at, as well as the ducts. School buildings such as St Francesca Cabrini Primary School are typically done in the holidays, so classrooms are not disturbed.
Honor Oak is about 2 miles south-west of New Cross, in Greater London. Anywhere in SE23, we can carry out AHU cleaning at your premises. Honor Oak is one of 764 towns, villages and districts in Greater London where we work for AHU cleaning.
AHU cleaning in SE23, SE22 and SE4 follows the same survey, fixed quote and written report as everywhere else we cover. AHU cleaning is available to premises on Rye Road, Ewart Road and Bovill Road and the roads around them. Neighbouring places we cover for AHU cleaning include Forest Hill (1 mile south), Brockley (1 mile east), Crofton Park (1 mile east), Nunhead (1 mile north) and Telegraph Hill (1 mile north). We also work in nearby towns such as London (4 miles north-west), City of Westminster (6 miles north-west), Marylebone (6 miles north-west), Kensington (7 miles north-west), St Pancras (6 miles north-west) and Shoreditch (5 miles north).
Near you in Honor Oak
We work in commercial kitchens and buildings around Allenby Tutorial Trust, Peckham Rye and Herne Tavern. Honor Oak has its own railway station: Honor Oak Park station. Well-known places in the area include Lewisham Shopping Centre (1.9 miles north-east) and Horniman Museum and Gardens (0.8 miles south-west). Open spaces near Honor Oak include One Tree Hill and Battersea Park Lake.
Common questions in Honor Oak
Can parking be tricky for a job in Honor Oak?
London parking can be tight, so details of loading bays and permits help. Night visits tend to make loading easier on London streets.
Can ventilation in schools around Honor Oak be cleaned out of term?
Yes, holiday work suits schools best. Around Honor Oak, the Food Standards Agency lists about 71 schools and colleges with registered kitchens within a mile and a half or so. Send us your term dates when you call 0345 646 2711 or drop us a line, and we’ll fit the work in.
Do you clean the ductwork as well?
Yes. We clean supply and extract ductwork to TR19® Air as well. It’s often worth doing both at once, and we can survey both on the same visit.
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 we start.
Are you accredited?
We hold CHAS, SafeContractor and ISO 9001, alongside BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. Vent Hygiene Elite is run by BESCA and independently audited.
Can you look after several sites?
Yes. Our area covers London and the South East, so sites at different addresses can be planned together as one programme. Every site has its own report.
Can you price the work without visiting?
Yes, where the pictures show enough. Otherwise, we book a survey at a time that suits the site, then a fixed quote.
Do you have a 24/7 line?
Yes, 24/7. Our office is open from 8am to 6pm on weekdays, with the emergency line covering every other hour.
The process
The first job on site is protection: sheeting goes over floors and surfaces close to the work. After that, the system is made safe and the work begins. It takes from a few hours for a compact unit to a day or more for a large one, and the area is cleaned down before we leave. Loading bays, visitor permits and roof access are the first things we ask about for a site in Honor Oak.
- First the unit is surveyed, from photos or a visit, and the scope agreed.
- With your site team, the unit is switched off and isolated, then the area around it protected.
- Filters are dealt with as agreed, and the coils, fan and casing cleaned.
- We clean out the drain tray and make sure it drains.
- A TR19® certificate and photo report follow the clean.
How to prepare
- Clear the space around the work
- Plan for cooking equipment or plant to be off before we arrive
- Let us know about permits to work or site inductions
How to get a quote
Photos are enough for some jobs, while others need a look on site. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, the quote is fixed before any work is booked.
Related advice
How we price AHU cleaning
Sites vary more than people expect. What affects the quote:
- The condition of the system
- Travel, parking and unloading
- The size of the system
- One-off work versus a regular cycle
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.
Asking for a quote
Photos and a few facts are often enough to price the work. Useful things to send:
- The times we could work without disrupting the site
- How we’d reach plant on a roof or in a plant room
- Any access panels or hatches you can see
- Your last certificate, test record or report
Every quote begins with a look at the system, from your pictures and details or, where that isn’t enough, a survey on site. After that, you get a fixed price for the work, before any work starts.