Essex · Air handling unit cleaning
The Common AHU cleaning
Our technicians work in The Common on cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces. Out-of-hours visits, a fixed quote and a written report with pictures as standard.
- Fan sections that haven’t been cleaned in years
- Leaves and litter drawn into the unit
- Units that have only ever had filter changes
AHU cleaning in The Common, done properly
Units vary a lot in size, age and layout, from a small ceiling-mounted unit to a large rooftop plant. We look at the unit first, from photos or a site visit, and give you a fixed quote before any cleaning starts. If you’re dealing with odours coming through the supply air and drain trays holding standing water, we can put it right.
For a building in or near The Common, access is agreed in advance and the visit is planned around the journey.
It’s worth checking any contractor’s accreditations. We are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we hold CHAS, SafeContractor and ISO 9001, and we are fully insured.
- Place
- The Common (CB10)
- Region
- Essex
- Paperwork
- Photo report after every visit
- Price
- A fixed price before we start
- When we work
- Evenings, overnight and weekends; 24/7 emergencies
- Call
- 0345 646 2711
- Checked
- 30 October 2026
How the visit works
Each visit runs to the same pattern: protect the area, isolate whatever needs isolating, carry out the AHU cleaning, clear away and leave you the report. On site, the work takes a single shift for a typical unit, longer for large or heavily soiled ones. A quick note on how to find the site and where to park makes a visit to The Common run smoothly.
- The survey covers the unit, its access and how it can be shut down.
- We sheet the area and the unit is isolated.
- Dirt and debris are removed from each section.
- We clean the coils and clear the tray and drain.
- We close every panel, hand the unit back and send the report and certificate.
Getting ready for the visit
- Plan for cooking equipment or plant to be off before we arrive
- Find the previous report, if there is one
- Let us know when the site is closed or quiet
Get a fixed quote
Want a quote for AHU cleaning? Please call 0345 646 2711 or send us an email and tell us about the site. We will explain what we’d do and send a fixed quote before anything is booked.
Related advice
Also near The Common
More services for The Common
The Common buildings and their air
About 3.5 miles west of The Common is Saffron Walden Community Hospital, the nearest hospital. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients. We cover The Common, about 41 miles from central London, as part of our work across London and the South East. Visits are booked around your hours, evenings and weekends included.
Healthcare buildings such as Saffron Walden Community Hospital, about 3.5 miles west, depend on their ventilation; if you manage a surgery, clinic or care home near The Common, yours matters too.
The Common is about 4 miles east of Saffron Walden, in Essex. If you need AHU cleaning in The Common, please phone us on 0345 646 2711 or drop us a line for a fixed quote. We work across South East England and London, including The Common. Our Essex coverage runs to 644 places, The Common among them. Our Chelmsford page covers sites nearby, about 21 miles away.
Postcode districts we cover here for AHU cleaning: CB10. Nearby, we also carry out AHU cleaning in Radwinter (1 mile south), Maple End (1 mile south-west), Wimbish (2 miles south-west), Hempstead (2 miles east) and Church End (3 miles north-west). We also work in nearby towns such as Braintree (13 miles south-east), Saffron Walden (4 miles west), Halstead (14 miles south-east), Great Dunmow (10 miles south), Stansted Mountfitchet (10 miles south-west) and Great Notley (14 miles south-east).
What’s near The Common
Other landmarks nearby include Castle Camps (2.8 miles north-east) and Saffron Walden Community Hospital (3.5 miles west). Not far away are Hales and Shadwell Woods.
What happens if it’s left?
A slimy drain tray only gets worse. 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. In a place like The Common, ductwork and fans are easy to forget until something goes wrong.
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.
What you get with us
- Fixed quotes from a survey or photos
- A written report with photos after each visit
- Evenings, overnight and weekends, plus 24/7 emergency callout
- Full insurance on every job
See how cleaning jobs are priced or our accreditations and certificates.
Common questions in The Common
Can you work in The Common outside opening hours?
Yes, evening, overnight and weekend work is normal for us. The work in The Common can fit around your hours. Just call 0345 646 2711 or use the quote form with your opening times and we will plan around them.
Do you offer AHU cleaning in The Common?
Yes, The Common is covered. To start, call us on 0345 646 2711 or email us with a few photos of the system.
What is TR19?
BESA’s ventilation hygiene specification, with two parts that matter most here: TR19® Grease for kitchen extract systems and TR19® Air for general ventilation. It isn’t law, but it’s the benchmark.
What’s included in an AHU clean?
The main parts are the filters, coils, drain tray, fan and inside of the casing. The survey confirms what’s in your unit before we quote.
Is there a survey before the work?
Yes, every time. We diagnose before we treat: the survey shows what needs doing and what access we need and the fixed quote is built on it.
What does AHU cleaning cost?
Size, condition, access and working hours all affect the cost. Ask us for a fixed quote, typically ready within one working day.
Can you price the work without visiting?
Yes, if we can see what we need. If not, a site survey comes first, and the quote follows that.
What do you need from me for a quote?
Some pictures and a quick description of the system plus the address and your hours. If we need more, we’ll ask.
When to call us in The Common
Mechanical servicing keeps a unit running, but it doesn’t always include cleaning the inside. That means a unit can tick every service box and still be carrying years of dirt.
Any of these means the system needs a check-up:
- Drain trays holding standing water
- Air handling units never cleaned inside
- Air handling units with blocked filters
- Fan sections that haven’t been cleaned in years
For schools like Radwinter Church of England Voluntary Aided Primary School, the holidays are the usual time to inspect and clean ventilation.
Before booking anyone
- Whether inaccessible sections are listed on the report
- Whether the price is fixed
- What records you’ll receive afterwards
- When they can work, and whether that is outside your opening hours
In-house cleaning or a specialist?
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. Leave those to us.
Logging matters as much as cleaning. A simple log of filter washes, wipe-downs and checks helps show that the system is managed between specialist visits, alongside our reports.
Aftercare tips
No system stays clean for ever, but care slows the build-up. Our tips:
- Plan the next inspection before the last report gets filed away
- Change filters on schedule and log each change
- Make sure condensate is draining away
- Clear leaves and litter away from the intake
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. If a section is hard to get into, it tends not to get checked.
Fixed quotes for AHU cleaning in The Common
You will get a fixed price before any work starts. It’s based on:
- Access, including roofs, risers and ceiling voids
- What state the system is in
- Where the site is and how we reach it
- Site rules, permits and inductions
One small site or a whole estate, we price it on the same basis: the work involved, the access and the timing. The price is fixed before any work starts.
Asking for a quote
The more you tell us, the more accurate the quote. When you get in touch, it helps to send:
- When the site is open and when it’s quiet
- Your last certificate, test record or report
- How we’d reach plant on a roof or in a plant room
- Any symptoms, from odd noises to smells or leaks
For a fixed quote, phone us on 0345 646 2711, or send details by email and tell us the type of site, your opening hours and roughly what the system looks like. Photos and the last report, if you have one, make the quote quicker. You will usually have a quote within one working day.
What the work involves, part by part
Rooftop and plant room units
Many AHUs sit on roofs or in plant rooms with limited access. We plan safe access as part of the survey so the quote reflects it.
Internal casing and panels
Access doors and panels are opened in turn and closed properly afterwards before the unit is handed back.