Hertfordshire · Air handling unit cleaning
Air handling unit cleaning in Leavesden, Hertfordshire
Looking for AHU cleaning in Leavesden? We diagnose first, fix the price and book the work around your hours, then sign off with a report and pictures.
- Plant that has been serviced but not cleaned
- Leaves and litter drawn into the unit
- Drain trays holding standing water
About our AHU cleaning in Leavesden
An AHU clean is a thorough examination and treatment of the unit. Every section is opened, cleaned and photographed, so you can see the unit’s condition for yourself. If you have dust built up on fan impellers and coils clogged with dust and debris, we can put it right, from supply and extract fans, filter sections and internal panels onwards.
Smaller buildings around Leavesden often keep their ventilation units in a roof void or plant cupboard, where they’re easy to forget. Every unit, large or small, has filters, coils and a drain tray to keep clean.
We’ve been trading since 2009, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
- Location
- Leavesden (WD25, WD5)
- Wider area
- Hertfordshire
- Paperwork
- Report and pictures after the visit
- Quote
- A fixed price before work begins
- Working hours
- When your site is closed, plus a 24/7 line
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
What happens on the day
There’s very little for your team to do on the day. Someone lets us in at the agreed time and shows us where everything is, and we take it from there. Afterwards, the area is left tidy and the written report follows. Your opening hours decide when we come to Leavesden, 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.
- We work through the unit from the intake to the outlet.
- The fan and drain tray are cleaned and the drain checked.
- After pictures are taken and the certificate issued.
Before we arrive
- Clear the space around the work
- Let us know about parking and loading
- Tell us the best time to work, such as after service or at a weekend
Getting a quote
There’s no standard price list, because every site is different. We look at your system first, from photos or on a visit, then send a fixed quote. To get going, call 0345 646 2711 or use the quote form.
Read more
Keeping the system healthy
Here’s the after-treatment advice, short and simple:
- File each AHU report in the maintenance log
- Note any water around the unit or leaks below it
- Change filters on schedule and log each change
- Report stiff or damaged access doors
Stick to the filter change schedule, because good filters protect everything downstream. Log every change so it’s easy to see when the next is due.
Regular inspection under TR19® Air shows when cleaning is due, rather than waiting for a problem.
Leavesden questions
Do you clean school ventilation in Leavesden in the holidays?
Yes, and it’s the easiest time to do it. There are about 23 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Leavesden. Booking early in the term gives the best choice of holiday dates.
Can you get to a site in Leavesden?
Yes, Leavesden is part of our area, however small the site. Just mention lanes, gates or anything else about the site when you book.
How much notice should we give?
The more notice, the better, particularly for night and weekend visits. Quotes normally come back within one working day, and emergencies are covered by our 24/7 line.
Can you look after several sites?
Yes. Send the list of sites and the work at each and you’ll get one fixed quote.
Is there a report after cleaning?
Yes, both a certificate and a report with pictures. It includes a recommended date for the next check.
Do you need to switch the unit off?
Yes, for the time we are working on it. Out-of-hours work is available so the building is not left without ventilation when it’s busy.
What accreditations do you have?
We’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we carry full insurance.
Which parts of an air handling unit do you clean?
We clean the filter section, heating and cooling coils, drain trays, fan and internal casing. Filters are cleaned or changed as agreed in the quote.
When something else is needed
Some problems need a different service or another trade:
- Damaged coils beyond cleaning
- A system that is undersized for the building
- Controls and BMS settings that run the unit
Not sure which it is? You can call us on 0345 646 2711 or drop us a line and we will tell you honestly.
Where we work
- Drain trays
- Dampers and louvres
- Supply and extract fans
- Filter sections
- Heating and cooling coils
- Internal panels
Fixed quotes for AHU cleaning in Leavesden
We don’t publish a price list, because sites vary so much. The quote depends on:
- Site rules, permits and inductions
- How many systems or sites are involved
- How easy every part is to reach
- Parking and loading at the site
Several systems or sites on one quote can make for a more efficient booking. Mention every system or site you need covered and we will price it together.
What to send for a quote
Photos and a few facts are often enough to price the work. Useful things to send:
- Your opening hours and when the area is out of use
- Detail shots of panels, filters and grilles
- The roof, plant room or outside wall the system runs to
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
Here’s what helps us quote: where the site is, what it is and its opening hours, a few photos and the last certificate or report, if there is one. Once you have those, call us on 0345 646 2711 or use the quote form.
How the job changes from site to site
Fans and fan sections
Build-up on fan blades can upset the balance and add wear. A clean fan runs more smoothly.
Heating and cooling coils
Coil fins are close together and catch the dust the filters miss. We clean them with care so the fins are not damaged.
Also in Leavesden
What we’re called out for in Leavesden
Most units live out of sight on roofs, in plant rooms or in ceiling voids and are rarely seen by anyone but maintenance staff. Months can pass without anyone looking inside.
Clients normally contact us when they notice something like this:
- Air handling units with blocked filters
- Leaves and litter drawn into the unit
- Blocked condensate drains and slimy trays
- Plant that has been serviced but not cleaned
For schools like Alban Wood Primary School and Nursery, the holidays are the usual time to inspect and clean ventilation.
Before you book anyone
- What hours they’ll be on site
- Whether inaccessible sections are listed on the report
- Proof of insurance
- Whether VAT is included
Managing agents and facilities teams in Leavesden
Where a tenant occupies the premises but the landlord owns the building, the lease normally sets out who maintains what. We can quote either party, and the report can go to both.
Multi-site operators often want one contractor and one number. We cover South East England and London, so visits at different addresses can be planned together and kept to a regular schedule.
AHU cleaning around Leavesden
Food Standards Agency records list about 23 schools, colleges and universities and about 21 hospitals, care homes and childcare premises registered as food businesses in Leavesden and the streets around it, up to about 1.5 miles out. Buildings like these often rely on mechanical ventilation, which TR19® Air covers. Leavesden Hospital is the nearest hospital, about 0.6 miles north-west of Leavesden. Clean air matters most where people are unwell, and that’s as true in a care home as in a hospital. Leavesden, about 19 miles from central London, is within our usual area. A survey and a fixed quote come first, then the visit at a time that suits you.
Hospitals such as Leavesden Hospital (about 0.6 miles north-west) show how much a building can rely on clean ventilation, and smaller healthcare sites near Leavesden are no different.
Leavesden is about 2 miles north of Watford, in Hertfordshire. Sites in Leavesden get the same service as everywhere we cover: diagnosis first, a fixed price, out-of-hours working where necessary and a written report with photos. Our area takes in 381 places across Hertfordshire, large and small. London is in our area too, around 19 miles away.
All of WD25 and WD5 is within our area for AHU cleaning, from the main roads to the quietest streets. You’ll find streets such as Forest Road, Langley Lane and Sheepcot Lane, all of which we cover for AHU cleaning. You will find Leavesden on the A405, which makes it straightforward for our technicians to reach for AHU cleaning. We also cover Garston (1 mile south-east), Meriden (1 mile south-east), North Watford (2 miles south), Watford (2 miles south) and Aldenham (2 miles south-east). Larger places within reach include Hemel Hempstead (5 miles north-west), St Albans (5 miles north-east), Welwyn Garden City (11 miles north-east), Harpenden (9 miles north), Cheshunt (15 miles east) and Hatfield (8 miles north-east).
What’s near Leavesden
In Leavesden, that means kitchens and buildings near Woodside Playing Fields and Francis Combe Academy, among other places. Leavesden’s nearest station is Garston station, about 1 mile south-east of the centre. A little further out are Hertfordshire Fire Brigade Museum (3.1 miles south) and Hilfield Castle (4.1 miles south-east). Green spaces nearby include Longspring Wood and Verulamium Lake.