Greater London · Air handling unit cleaning
Deptford AHU cleaning
Looking for AHU cleaning in Deptford? We survey first, send you a fixed quote and work around your opening hours, then sign off with a report and pictures.
- Plant that has been serviced but not cleaned
- Dirty fans and fan housings
- Coils clogged with dust and debris
Signs you need AHU cleaning in Deptford
No filter stops everything. What gets through settles on coils, fans and the inside of the casing, building up layer by layer.
Most sites get in touch when they notice one of these:
- Intake sections clogged with outdoor debris
- Blocked condensate drains and slimy trays
- Plant that has been serviced but not cleaned
- Units needing a clean before a new tenant or handover
Miller General Hospital, about within half a mile south-east, is the nearest hospital to Deptford, and healthcare sites of every size need their supply air kept clean.
What to look for in a quote
- Whether they’re fully insured
- Which accreditations they hold, and whether you can check them
- Exactly which parts of the system are covered
- Whether the work can be done while the site is closed
AHU cleaning in Deptford
An air handling unit is the heart of a building’s ventilation: air is pulled in, filtered, conditioned and sent out through the ducts. Whatever builds up inside it travels with that air, so cleaning the unit matters as much as cleaning the ducts. The work covers drain trays, supply and extract fans and internal panels, and the jobs we see most are blocked condensate drains and slimy trays and air handling units with blocked filters.
London buildings often depend on air handling units in plant rooms or on the roof to supply fresh air. In a building in Deptford, dust and debris build up in the units and ductwork over time, which is what TR19® Air cleaning deals with.
Good records are part of the job. Each visit is written up with photos, covering the work done, any areas we couldn’t access and a recommended next date. Keep it with your fire safety records so it’s ready for an insurer, fire officer or EHO.
- Place
- Deptford (SE8, SE10, SE14)
- Wider area
- Greater London
- Paperwork
- Photo report after every visit
- Quote
- Fixed quote, normally within a working day
- When we work
- Out of hours as standard, 24/7 emergency line
- Telephone
- 0345 646 2711
- Reviewed
- 30 October 2026
AHU cleaning in Deptford: local notes
Going by the FSA’s register, there are about 63 schools, colleges and universities, about 69 care, childcare and hospital premises and about 10 hotels and guest houses serving food in and around Deptford, up to about a mile and a half out. Busy, occupied buildings like these are where clean supply air matters most. London plant rooms are often on roofs or in basements reached through occupied floors. About under half a mile south-east of Deptford is Miller General 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.
Classrooms and halls at schools such as Tidemill Academy are easiest to work in when pupils are away. If you manage shops or offices close to Deptford station, a TR19® Air inspection shows whether the ductwork needs cleaning.
Deptford is about 3 miles south-east of Whitechapel, in Greater London. We provide AHU cleaning for commercial premises of every kind in Deptford and the rest of Greater London. Deptford is one of 764 towns, villages and districts in Greater London we cover for AHU cleaning.
All of SE8, SE10 and SE14 is covered for AHU cleaning, from busy streets to back roads. You’ll find streets such as Mill Lane, Dixon Road and Clare Road, and we cover them all for AHU cleaning. Deptford sits on or near the A2209, which makes travel easy for AHU cleaning. Close by, we work in New Cross (1 mile south-west), St Johns (1 mile south), Millwall (1 mile north), Isle of Dogs (1 mile north-east) and North Greenwich (1 mile north-east). Larger places within reach include London (3 miles north-west), City of Westminster (6 miles north-west), Marylebone (6 miles north-west), Kensington (8 miles west), St Pancras (5 miles north-west) and Shoreditch (4 miles north-west).
Around Deptford
Locally, jobs take us to businesses close to Addey and Stanhope School, Sue Godfrey Nature Park and Deptford Arms. There’s a railway station in Deptford itself: Deptford station. A little further out are Greenwich Castle (1.1 miles east) and Lewisham Shopping Centre (1.3 miles south-east). For a walk, there’s Sue Godfrey Nature Park and Tower Hill.
What a clean will not put right
We will always give you a straight diagnosis, so here’s what AHU cleaning won’t do:
- Ventilation that was badly designed in the first place
- Ductwork downstream of the unit, which is a separate clean
- Leaking heating or cooling coils
Not sure which it is? You can give us a ring on 0345 646 2711, or send details by email and we’ll tell you honestly.
Parts of the system we cover
- Filter sections
- Supply and extract fans
- Internal panels
- Heating and cooling coils
- Dampers and louvres
- Drain trays
Your questions about AHU cleaning in Deptford
Do you do school ventilation cleaning in Deptford in the summer holidays?
Yes. The holidays are the usual time for school work. The FSA’s register shows about 63 schools and colleges with food registrations within roughly a mile and a half of Deptford. You can ring 0345 646 2711 or send us an email with the dates the site is empty.
Can you come to Deptford after we close?
Yes, evening, overnight and weekend work is normal for us. That way a site in Deptford doesn’t have to lose a day’s trading. Tell us your opening hours when you ask for a quote.
Are you insured?
Yes. Duct Doctor is fully insured, and we can share the details when you need them.
Do you work in Deptford?
Yes. Deptford is part of the area we cover, as part of our area across London and the South East.
How often should an air handling unit be cleaned?
TR19® Air takes a risk-based approach, so it depends on inspection rather than a fixed interval. Each report suggests when the unit should next be looked at.
How do you protect the area?
Protection goes down first: floor sheeting and covers over nearby surfaces and equipment. We tidy up and take our waste away before we leave.
What if parts of the system can’t be reached?
We record them on the report, with a note of where it is, and we explain what access is needed, such as extra access panels in ductwork.
Can you fix a faulty AHU?
Our AHU work is cleaning rather than mechanical repair. If we spot a fault, we note it in the report so your maintenance contractor can deal with it.
Landlords, agents and facilities managers
Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person must assess and reduce fire risk, which may be the employer, owner, landlord, FM or managing agent. Where responsibility is shared, records matter even more.
We work for landlords, managing agents and facilities managers as well as the people running the site. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we can quote for the whole system.
The process
On the day, we arrive at the time agreed with you, which is often after service, overnight or at a weekend. Equipment that has to be off is switched off and allowed to cool before we start, and the area around the work is covered and protected. The work itself takes a single shift for a typical unit, longer for large or heavily soiled ones. Getting kit into a London building takes planning, so let us know where we can load and park in Deptford.
- First the unit is surveyed, from photos or a visit, and the scope agreed.
- We arrange the shutdown with your staff and sheet the area.
- We clean or change the filters as agreed, then clean the coils, fan and internal panels.
- Standing water and slime come out of the tray and the drain is checked.
- You get a TR19® certificate and a photo report.
How to prepare
- Agree a time when the area can be out of use
- Tell us where we can park and unload
- Move anything stored near the system
Getting a quote
To help us quote: where the site is, what it is and its opening hours, pictures of the system and the last certificate or report, if there is one. Then phone us on 0345 646 2711 or send us an email.
Advice
Different parts, different methods
Rooftop and plant room units
Units outside are exposed to weather and windblown debris. We clean the intake and first stage of filters along with the rest.
Filters
Every AHU relies on its filters to catch dust before it reaches the coils. As part of the clean, filters are checked and cleaned or replaced as agreed, and the housing around them is cleaned too.
Keeping the system healthy
Simple habits between visits make a real difference. Our advice:
- Watch for drips or damp patches near the plant
- Report musty smells from the vents right away
- Stick to the filter change plan
- Don’t store bins or materials near the intake
The ducts served by the unit may need attention too. A clean unit feeding dirty ducts only solves half the problem, and we can quote for both.
Don’t let leaves, litter or stored materials build up near the fresh air intake. Anything around the intake is likely to be drawn in.
Towns and villages near Deptford
What else we do in Deptford
What affects the cost of AHU cleaning
The price is fixed before any work begins. It takes into account:
- How easy every part is to reach
- Any permits to work or inductions
- Working hours and out-of-hours timing
- The scale of the work
The price reflects the work, not guesswork. That’s why every job is surveyed first, and why the quote is fixed before work begins.
Helping us quote
You do not need the technical terms. It helps if you can send:
- Detail shots of panels, filters and grilles
- The postcode and the type of business
- Any previous report or certificate
- Wide pictures of the system and the area around it
Quoting starts with a diagnosis, either from pictures and details you send or from a site visit. After that, you get a fixed price for the work, before we start.