Greater London · Air handling unit cleaning
Air handling unit cleaning in Petts Wood, Greater London
Need AHU cleaning in Petts Wood? We survey first, send you a fixed quote and work around your opening hours, finishing with a written report and pictures.
- Units that have only ever had filter changes
- Filters that are clogged or overdue
- Debris and leaves in the fresh air intake
AHU cleaning for kitchens and businesses in Petts Wood
We clean the parts of the unit where dirt and moisture gather: filters, coils, drain trays, fans and the internal panels. You get a TR19® certificate and a photo report showing the unit before and after. If you have dirty coils holding back the airflow and blocked condensate drains and slimy trays, we can help, from dampers and louvres, supply and extract fans and heating and cooling coils onwards.
London offices and flats often have ductwork added through successive refits, with old runs left behind that are hard to reach. An inspection first shows where cleaning is needed in a building in Petts Wood.
Duct Doctor has been trading since 2009, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we’re fully insured.
- Location
- Petts Wood (BR5, BR6, BR2)
- Region
- Greater London
- Reporting
- Report and pictures after the visit
- Price
- A fixed quote up front
- When we work
- Evenings, overnight and weekends; 24/7 emergencies
- Call
- 0345 646 2711
- Last updated
- 30 October 2026
What affects the cost of AHU cleaning
We don’t publish a price list, because sites vary so much. The quote depends on:
- The times the site is available
- How big the system is
- Whether several sites go on one quote
- Whether we need access equipment or extra panels
The cost depends on how big the system is, the condition it’s in and access to every part of it. You get a fixed price before any work starts, so there are no surprises.
What to send for a quote
Photos and a few facts are often enough to price the work. Useful things to send:
- Your last certificate, test record or report
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- A few general shots of the system
Photos are the quickest way to a quote: the system from a couple of angles, plus any access panels or hatches. Tell us what kind of site it is and when it’s open, and we can price many jobs without a visit.
Also near Petts Wood
Other services in Petts Wood
AHU cleaning around Petts Wood
Food Standards Agency data includes about 13 schools, colleges and universities and about 21 caring premises (care homes, nurseries and hospitals) within 1.5 miles or so of the middle of Petts Wood. Busy, occupied buildings like these are where clean supply air matters most. The nearest hospital to Petts Wood is Bridgeways Day Hospital, about 1.5 miles west. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale. In London, ventilation plant is often on the roof or below ground, so the work is usually done out of hours.
If you manage offices or shops near Petts Wood station, their ventilation can be inspected and cleaned out of hours. Bridgeways Day Hospital, about 1.5 miles west, is the nearest hospital to Petts Wood, and healthcare sites of every size need their supply air kept clean.
Petts Wood is about 1 mile west of Orpington, in Greater London. Sites in Petts Wood get the same service as everywhere we cover: a survey first, a fixed quote, work timed around your hours and a report with photos. Petts Wood is one of 764 towns, villages and districts in Greater London we cover for AHU cleaning. We also work in London, around 11 miles away.
Every address in BR5, BR6 and BR2 is within our area for AHU cleaning, from busy streets to back roads. AHU cleaning is available to premises on Tent Peg Lane, Ryecroft Road and Beaumont Road and the roads around them. We also cover Crofton (1 mile south), Broom Hill (1 mile south-east), Southborough (1 mile west), Locksbottom (1 mile south-west) and Bromley Common (2 miles west). Within a short drive, we also cover London (11 miles north-west), City of Westminster (13 miles north-west), Marylebone (13 miles north-west), Kensington (14 miles north-west), St Pancras (13 miles north-west) and Shoreditch (12 miles north-west).
Landmarks near Petts Wood
Locally, jobs take us to businesses close to Jubilee Country Park, Bromley High School and Daylight Inn and the streets around them. There’s a railway station in Petts Wood itself: Petts Wood station. Other landmarks nearby include Bridgeways Day Hospital (1.5 miles west) and Crofton Roman Villa (1.2 miles south-east). For a walk, there’s The Warren and Summer Hill.
Petts Wood: your questions answered
Do you work overnight in Petts Wood?
Yes, we can come after you close and finish before you open. That way a site in Petts Wood does not have to lose a day’s trading. When you call us on 0345 646 2711 or send us an email, mention when the site is quiet.
Can you clean school ventilation in Petts Wood during the holidays?
Yes. Half-terms and the summer break are the natural time for school work. With about 13 schools and colleges on the FSA’s register within roughly a mile and a half of Petts Wood, it pays to plan holiday dates ahead. Just give us a ring on 0345 646 2711, or email photos with your term dates and we will plan around them.
What information do you need?
A short description and a few photos plus the address and your hours. If we need more, we’ll ask.
Which parts of an air handling unit do you clean?
The main parts are the filters, coils, drain tray, fan and inside of the casing. We confirm the scope after looking at the unit.
Is there a survey before the work?
Yes. Every job is surveyed first, from your pictures and details, or with a visit where needed. A fixed quote follows.
How far ahead should we book?
The more notice, the better, especially for out-of-hours work. We usually quote within one working day, and there’s a 24/7 line for emergencies.
Will we get paperwork for the AHU clean?
Yes. Every clean comes with a TR19® certificate and a photo report. Keep them in the maintenance log.
What about areas you cannot get to?
We never leave them off the paperwork. The report says which parts couldn’t be reached and why, and we can quote to improve the access.
Aftercare tips
After the visit, a few habits help the work last:
- Diary the inspection date recommended in the report
- Keep filter changes on time and recorded
- Note any water around the unit or leaks below it
- Check the drain tray is emptying during routine visits
You receive a TR19® certificate and a photo report after the clean. Keep both with the building’s maintenance records.
Keep the unit’s doors and panels in working order. Sections that are awkward to open are the ones that get skipped.
When it’s something else
We’d rather tell you now than book work that won’t help, so here are the limits:
- Ductwork downstream of the unit, which is a separate clean
- Coils that are corroded or leaking and need replacing
- Breakdowns that need a mechanical engineer
If in doubt, call us on 0345 646 2711, or email photos and we will say what we think.
Where we work
- Dampers and louvres
- Heating and cooling coils
- Supply and extract fans
- Filter sections
- Drain trays
- Internal panels
Part by part
Filters
Dirty filters cut airflow and let dirt slip past their frames. We clean the frames and rails so the filters sit tight.
Fans and fan sections
The fan moves all of the unit’s air, so dirt on it gets spread around. The impeller, its housing and the fan chamber are cleaned.
Leave it or put it right?
Cleaning a unit while it only has light dust is quick. Leave it for years and dirt bakes onto coils and casings, especially where there’s been moisture. In Petts Wood, as across London, ductwork often passes through shared risers and other people’s space.
No two sites are the same, so we price each one individually. Size, access, the condition of the system and when we can work all make a difference.
Why Petts Wood businesses choose us
- A single point of contact for sites across the South East and London
- A fixed price before any work starts
- Ventilation hygiene specialists since 2009
- Fully insured
Take a look at what affects the cost and how to check a contractor.
When to call us in Petts Wood
Air handling units are usually tucked away on roofs, in plant rooms or above ceilings and are rarely seen by anyone but maintenance staff. It’s easy for a long time to go by without anyone opening the panels.
If you notice any of these, it’s worth a diagnosis:
- Condensate trays that won’t empty
- Plant that needs cleaning after a refit
- Dust built up on fan impellers
- Air handling units with blocked filters
If you manage a school such as Crofton Junior School, ventilation cleaning is best booked for the holidays.
What to look for in a quote
- What’s included in the scope, part by part
- What insurance they carry
- If they look at the system before pricing
- What paperwork you get at the end
What we do, step by step
Protection comes first: sheeting goes over floors and surfaces close to the work. Then we make the system safe and start. The work on site 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. Many London buildings have a managing agent, a security desk or a permit-to-work system, so tell us who to contact in Petts Wood.
- 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.
- Filters, coils, fan section and casing are cleaned in turn.
- Drain trays are cleared and cleaned and the outlet checked.
- We close up the unit and send the certificate and before and after pictures.
Getting ready for the visit
- Let us know how we reach the system, including roofs, risers and plant rooms
- Tell us the best time to work, such as after service or at a weekend
- Make sure equipment near the work can be switched off and left to cool
Get a fixed quote
For AHU cleaning in Petts Wood, call 0345 646 2711 or send us an email. Tell us what kind of premises it is and when it’s open, plus pictures or the previous report if they’re to hand. We normally send a fixed quote within one working day.