Essex · Air handling unit cleaning
Little Dunmow AHU cleaning
AHU cleaning for Little Dunmow, from a team that has been trading since 2009. Out-of-hours visits and 24/7 emergency callout.
- Plant that has been serviced but not cleaned
- Air handling units due a clean after building work
- Stale or musty smells from the ventilation
How the job changes from site to site
Heating and cooling coils
Because cooling coils run wet, the dirt on them tends to cling. We clean the coil and the tray beneath it together.
Filters
Clogged filters reduce airflow, and dirt can get round the edges. The filter section is cleaned so new or cleaned filters sit properly.
AHU cleaning for kitchens and businesses in Little Dunmow
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. Coils are cleaned carefully, with methods chosen so the fins are not flattened. If you’re dealing with units that have only ever had filter changes and units needing a clean before a new tenant or handover, we can put it right.
Smaller buildings around Little Dunmow often keep their ventilation units in a roof void or plant cupboard, where they’re easy to forget. Filters, coils and drain trays need attention whatever the size of the unit.
Think of the report as the system’s health record: a dated account with photos of everything we did. For TR19® Grease cleans, the certificate comes through the BESCA Vent Hygiene Elite portal and sits alongside the report.
- Location
- Little Dunmow (CM6)
- Region
- Essex
- Paperwork
- Written report with pictures
- Quotes
- Fixed quote, normally within a working day
- Working hours
- Out of hours as standard, 24/7 emergency line
- Telephone
- 0345 646 2711
- Reviewed
- 30 October 2026
What your team can do, and what needs us
Staff cleaning and specialist work aren’t the same thing. A daily filter wipe and a weekly filter wash keep grease down at the front of the system, but they do not reach the grease that builds up further in. That part needs specialist access and equipment.
Logging matters as much as cleaning. A dated log of in-house cleaning and checks shows an inspector that the system is looked after between visits, alongside our reports.
FAQs for Little Dunmow
Do you work overnight in Little Dunmow?
Yes, we can come after you close and finish before you open. Your customers, staff or residents in Little Dunmow needn’t be disturbed. Let us know the hours you’re closed and we’ll book within them.
Can ventilation in schools around Little Dunmow be cleaned out of term?
Yes, holiday work suits schools best. There are about 5 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Little Dunmow. Booking early in the term gives the best choice of holiday dates.
Which kinds of sites do you work on?
All kinds of commercial and public premises: kitchens, offices, schools, healthcare, retail, leisure and food production. We fit the work around how the site operates.
Can we book visits on a schedule?
Yes. Plans on a 3, 6 or 12-monthly cycle are available, depending on what the system needs.
What do you do to protect the area?
We cover floors and nearby surfaces with sheeting before any work starts, and anything we remove is contained. Before we leave, we tidy up and clean down.
Do you work with multi-site operators?
Yes. You deal with one contact for every site in our area, and visits can be set on a regular cycle.
How far ahead should we book?
That depends on the slot you want and the size of the job. Mention your preferred dates with your enquiry, and if it’s an emergency, call us any time.
Do you need to switch the unit off?
Yes, while the clean is under way. Out-of-hours work is available so the building is not left without ventilation when it’s busy.
Towns and villages near Little Dunmow
Also in Little Dunmow
The process
Before we leave, we walk the area with whoever is on site. We point out anything that couldn’t be reached or needs a follow-up, and it goes on the report too. All told, the work takes half a day to a full day per unit, with large plant planned over several shifts. Your opening hours decide when we come to Little Dunmow, not ours.
- First we agree when the unit can be switched off, including evenings or weekends.
- We take before photos of each section of the unit.
- Filters, coils and internal surfaces are cleaned from intake to discharge.
- We finish with the fan section and the drain tray.
- We take after pictures and issue the certificate and report.
Before we arrive
- Clear loose items from the work area
- Dig out any earlier paperwork for the system
- Mention any sign-in, permit or induction we need
Getting a 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
AHU cleaning in Little Dunmow: local notes
There are about 5 schools, colleges and universities and about 3 hospitals, care homes and childcare premises on the FSA’s food hygiene register across Little Dunmow and its immediate surroundings (about a mile and a half). Busy, occupied buildings like these are where clean supply air matters most. At about 33 miles from central London, Little Dunmow sits well inside the area we cover. The visit is fixed around your opening hours, not ours. For Little Dunmow, the closest hospital is Braintree Community Hospital, roughly 5.4 miles east. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
Healthcare buildings such as Braintree Community Hospital, about 5.4 miles east, depend on their ventilation; if you manage a surgery, clinic or care home near Little Dunmow, yours matters too.
Little Dunmow is about 6 miles west of Braintree, in Essex. Every kind of commercial site in Little Dunmow, AHU cleaning is something we can help with. We can work out of hours so the site keeps running. Across Essex, we cover 644 places, Little Dunmow among them. Chelmsford is in our area too, around 9 miles away.
We cover every part of CM6 for AHU cleaning and the streets around it. We cover sites on Station Road, Worrin Road and Durand Lane and the roads around them. We also cover the places around Little Dunmow: Brookstreet (1 mile west), Felsted (1 mile east), Causeway End (1 mile south-east), North End (1 mile south) and Watch House Green (2 miles east). Larger places within reach include Chelmsford (9 miles south), Braintree (6 miles east), Harlow (14 miles south-west), Maldon (15 miles south-east), Witham (10 miles south-east) and Saffron Walden (13 miles north-west).
Near you in Little Dunmow
We work in commercial kitchens and buildings around Flitch Of Bacon Public House. A little further out are Little Easton Moat (4 miles north-west) and Braintree Community Hospital (5.4 miles east). Green spaces nearby include Phyllis Currie Nature Reserve.
Managing agents and facilities teams in Little Dunmow
Keeping records across a portfolio is half the battle. Each visit produces a dated report with pictures, ready to show insurers, fire officers or EHOs.
For anyone managing more than one site, we can plan visits across the whole estate and price them together. Each site gets its own report and photos, so records stay tidy.
Why deal with it now?
When the unit is clean, less dirt reaches the ducts, so the ducts and grilles stay cleaner between cleans. That makes the next inspection of a building in Little Dunmow simpler. A visit arranged in advance is far less disruptive than a callout on a busy day.
We do not list prices on the website, because the cost depends on the site in front of us. Call for a fixed quote, and we will talk you through it.
Why choose Duct Doctor in Little Dunmow
- Fully insured
- Survey first, then a fixed quote
- Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
- Fixed quotes from a survey or pictures
Read what affects the cost and our accreditations.
Signs you need AHU cleaning in Little Dunmow
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 Little Dunmow, that is air they breathe for hours at a time.
The symptoms we are asked about most include:
- Blocked condensate drains and slimy trays
- Filters that are clogged or overdue
- Dust built up on fan impellers
- Dirty coils holding back the airflow
Classrooms and halls at schools such as The Flitch Green Academy are easiest to work in when pupils are away.
Before you book anyone
- Whether the whole system is included, or only the parts that are easy to reach
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- Whether the quote shows VAT
- What hours they’ll be on site
Keeping the system healthy
Here’s the after-treatment advice, short and simple:
- Check the drain tray is emptying during routine visits
- File each AHU report in the maintenance log
- Flag stale or damp smells in the supply air
- Diary the inspection date recommended in 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 make sure it stays clear.
Regular inspection under TR19® Air shows when cleaning is due, rather than waiting for a problem.