Greater London · Air handling unit cleaning
AHU Cleaning in Cranham
AHU cleaning for Cranham, from a team that has been trading since 2009. Evenings, overnight and weekends, plus a 24/7 emergency line.
- Dirty coils holding back the airflow
- Rooms that smell stuffy when the system runs
- Units needing a clean before a new tenant or handover
Different parts, different methods
Heating and cooling coils
A dirty coil holds back the air and makes heating and cooling less effective. A clean gets air moving through the coil properly again.
Drain trays
Older trays can corrode and start leaking. We record their condition with pictures so you can decide on any repairs.
About our AHU cleaning in Cranham
We clean air handling units for buildings in Cranham and across Greater London, working to TR19® Air, in offices, schools, hospitals, care homes and retail. The work is timed around when the system can be switched off, including evenings, nights and weekends. The work covers drain trays, supply and extract fans and heating and cooling coils, and people most often call us about coils clogged with dust and debris and units that have only ever had filter changes.
Across London, offices, hotels, schools and healthcare buildings rely on mechanical ventilation, much of it supplied through air handling units on roofs or in basements. In a building in Cranham, dust and debris build up in the units and ductwork over time, which is what TR19® Air cleaning deals with.
Nothing is signed off by word of mouth: a written report, dated and illustrated with pictures, plus a certificate through the BESCA Vent Hygiene Elite portal when the work is a TR19® Grease clean. It shows what was done and what, if anything, couldn’t be reached.
- Where
- Cranham (RM14)
- Region
- Greater London
- Reporting
- Report and photos after the visit
- Price
- A fixed price before we start
- Working hours
- After hours by arrangement; emergencies any time
- Telephone
- 0345 646 2711
- Checked
- 30 October 2026
Also near Cranham
Also in Cranham
Why deal with it now?
Facilities teams are often asked for evidence that the ventilation is looked after. Our certificate and photo report give you clear evidence, for audits, tenants or your own peace of mind. In Cranham, a planned overnight visit is much easier than closing unexpectedly.
The price reflects the work, not guesswork. That is why we survey first, from pictures or on site, and the price is agreed before work begins.
Why us?
- In business since 2009
- CHAS and SafeContractor accredited, with ISO 9001
- Out-of-hours work and a 24/7 emergency line
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
See how cleaning jobs are priced and our accreditations and certificates.
What happens on the day
Our technicians bring everything the work needs, from protective sheeting to tools and access equipment. All we need from you is clear access and the right equipment switched off. The visit takes half a day to a full day per unit, with large plant planned over several shifts. Managed blocks in London often need contractors booked in ahead, and we’re happy to deal with the agent directly for a site in Cranham.
- We agree a shutdown window that suits the building.
- Before cleaning, each section is photographed.
- 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.
Preparing for the visit
- Name a contact who can let us in at the agreed time
- Let us know how we reach the system, including roofs, risers and plant rooms
- Plan for cooking equipment or plant to be off before we arrive
Get a fixed quote
Photos are the quickest way to a quote: wide shots of the system, close-ups of anything that worries you and how we’d get to it. Add the site type and your opening hours, and many jobs can be priced from that alone.
Related advice
When to call us in Cranham
It matters for two reasons: the unit supplies the air people breathe, and a dirty unit has to work harder. For anyone working, learning or staying in a building in Cranham, that’s air they breathe for hours at a time.
Any of these means the system needs a check-up:
- Dust-coated heating and cooling coils
- Units that have only ever had filter changes
- Condensate trays that will not empty
- Units needing a clean before a new tenant or handover
Healthcare ventilation, from large hospitals like St George's Hospital (about 2.4 miles south-west) to small clinics, depends on clean filters, coils and ducts.
Questions to ask before you book
- How areas they cannot reach will be recorded
- What paperwork you get at the end
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- If the quote is a fixed price or an estimate
Managing agents and facilities teams in Cranham
When the building owner and the occupier are different, it’s worth checking the lease for who maintains the systems. We’re happy to deal with either side and send the paperwork to whoever needs it.
Keeping records across a portfolio is half the battle. Each visit produces a dated report with photos, ready to show insurers, fire officers or EHOs.
Questions from Cranham
Do you work overnight in Cranham?
Yes, we can come after you close and finish before you open. The work in Cranham can fit around your hours. Let us know the hours you are closed and we will book within them.
What do you need to know about parking in Cranham?
London parking can be tight, so details of loading bays and permits help. If the building has a loading slot system, we’ll book into it.
Do you have insurance?
Yes, fully. We also hold CHAS and SafeContractor, for sites that check contractor safety.
What is TR19?
It’s BESA’s specification and the benchmark insurers, fire officers and EHOs look to. It sets out inspection, cleaning and record keeping, and it takes a risk-based approach.
Can you clean the ducts connected to the AHU?
Yes. We clean supply and extract ductwork to TR19® Air as well. Cleaning the unit and ducts together often makes sense, and we can quote for both.
What’s included in an AHU clean?
Everything inside the unit that air passes over, from intake to discharge, including coils, fan and drain trays. You get a photo report showing each part before and after.
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. You get a fixed price before work begins.
Do you give a certificate after the clean?
Yes, a TR19® certificate and a photo report. It includes a recommended date for the next check.
Looking after it afterwards
Looking after the system between visits is straightforward, and it helps at the next visit:
- Keep the area around the fresh air intake clear
- Keep filter changes on time and recorded
- Look at the condensate drain whenever the unit is serviced
- Diary the inspection date recommended in the report
We recommend when the unit should next be inspected or cleaned, based on what we found. Under TR19® Air the timing is set by inspection and risk, not a fixed calendar.
Do not let leaves, litter or stored materials build up near the fresh air intake. What’s near the intake ends up in the unit.
Staff cleaning versus specialist work
Your own staff can handle the daily basics: wiping down canopy surfaces, cleaning filters and keeping a simple log. What they cannot safely do is clean inside the ductwork, the fan or the risers, and that’s where we come in.
Good housekeeping makes our visits easier, not unnecessary. Regular in-house cleaning slows the build-up, but hidden parts of the system still need specialist attention.
Ventilation in Cranham buildings
The FSA’s food hygiene register lists about 13 schools, colleges and universities and about 27 care, childcare and hospital premises with registered kitchens or food service within about 1.5 miles of central Cranham. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. Cranham’s nearest hospital, St George's Hospital, is about 2.4 miles south-west. Clean air matters most where people are unwell, and that is 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 usually done out of hours.
Workplaces around Upminster station with an air handling unit need the filters, coils and drain tray looked at, as well as the ducts. Classrooms and halls at schools such as Hall Mead School are easiest to work in when pupils are away.
Cranham is about 2 miles east of Hornchurch, in Greater London. We provide AHU cleaning for businesses, landlords and public buildings in Cranham and the rest of Greater London. Across Greater London, we cover 764 places, Cranham among them. You can also see our page for Chelmsford, about 15 miles away.
We work across RM14 for AHU cleaning and the roads nearby. Streets in the area include Avon Road, Moor Lane and Front Lane, and we cover them all for AHU cleaning. Neighbouring places we cover for AHU cleaning include Upminster (1 mile west), Puddle Dock (1 mile east), Upminster Bridge (1 mile west), North Ockendon (2 miles south-east) and Emerson Park (2 miles north-west). Larger places within reach include Shoreditch (15 miles west), Walthamstow (13 miles west), Hoxton (15 miles west), Whitechapel (15 miles west), Orpington (14 miles south-west) and Plaistow (11 miles west).
What’s near Cranham
Typical jobs here are in premises near The James Oglethorpe Primary School, The Crumpled Horn pub and St. Andrew's Park and the streets around them. Cranham’s nearest station is Upminster station, about 0.7 miles west of the centre. Nearby you will also find The Mercury Mall (3.7 miles west) and Upminster Tithe Barn Museum of Nostalgia (0.6 miles north-west). Green spaces nearby include Cranham Brickfields.