Hertfordshire · Air handling unit cleaning
AHU Cleaning in Shenleybury
One call covers AHU cleaning in Shenleybury: survey, fixed quote, work and sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.
- Leaves and litter drawn into the unit
- Condensate trays that will not empty
- Rooms that smell stuffy when the system runs
About our AHU cleaning in Shenleybury
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 pictures or a site visit, and give you a fixed quote, so you know where you stand. The work covers heating and cooling coils, supply and extract fans and filter sections, and the jobs we see most are dirty coils holding back the airflow and air handling units due a clean after building work.
For a building in or near Shenleybury, access is agreed in advance and the visit is planned around the journey, and the ventilation is inspected, cleaned and recorded the same as anywhere.
The sign-off is always in writing: a written report, dated and illustrated with photos, plus a certificate through the BESCA Vent Hygiene Elite portal when the work is a TR19® Grease clean. Any parts we couldn’t reach are recorded on it too.
- Where
- Shenleybury (WD7)
- Region
- Hertfordshire
- Reporting
- Photo report after each visit
- Quote
- Fixed quote, usually within a working day
- When we work
- Overnight and weekend work, 24/7 emergency callout
- Call
- 0345 646 2711
- Updated
- 30 October 2026
Honest limits
We will always give you a straight diagnosis, so here’s what AHU cleaning won’t do:
- Ventilation that was badly designed in the first place
- Damaged coils beyond cleaning
- Problems with the unit’s controls or sensors
If you’re not sure, just phone us on 0345 646 2711, or send details by email and we will give you a straight answer.
Parts of the system we cover
- Dampers and louvres
- Supply and extract fans
- Heating and cooling coils
- Internal panels
- Filter sections
- Drain trays
What we do, step by step
The first job on site is protection: floors, worktops and anything near the work are covered. Then we make the system safe and start. The work on site takes one overnight shift for many single units, with bigger plant phased, and we clear up before we go. If the van will struggle with a lane or gateway near Shenleybury, let us know and we will plan around it.
- The survey covers the unit, its access and how it can be shut down.
- The area is protected and the unit made safe.
- Each section is cleaned of dust, debris and slime.
- We clean the coils and clear the tray and drain.
- We close every panel, hand the unit back and send the report and certificate.
Before we arrive
- Let us know about parking and loading
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
- Clear the space around the work
Ask for a quote
There’s no standard price list, because no two systems are the same. We look at your system first, from pictures or on a visit, then send a fixed quote. To get going, call 0345 646 2711 or send us an email.
Advice
Managing agents and facilities teams in Shenleybury
If you look after several sites, we can schedule visits across all of them on one quote. Each site gets its own report and photos, so each one has its own record.
We regularly work with managing agents. Tell us the site, the work and the access arrangements, and we’ll send a fixed quote.
Signs you need AHU cleaning in Shenleybury
Most units live out of sight on roofs, in plant rooms or in ceiling voids, so they’re easy to forget about. It’s easy for a long time to go by without anyone opening the panels.
These are the problems we see most often:
- Rooms that smell stuffy when the system runs
- Units that have only ever had filter changes
- Dust built up on fan impellers
- Debris and leaves in the fresh air intake
For schools like Clore Shalom School, the holidays are the usual time to inspect and clean ventilation.
Comparing quotes
- Whether a written report and pictures are included
- If the quote is a fixed price or an estimate
- Which accreditations they hold, and whether you can check them
- Proof of insurance
What affects the cost of AHU cleaning
Sites vary more than people expect. What affects the quote:
- A single visit or a regular plan
- Working hours and out-of-hours timing
- Access, including roofs, risers and ceiling voids
- The condition we find in the survey
You won’t find a price list here, because the cost depends on the site in front of us. Call for a fixed quote, and we will explain what it covers.
What to send for a quote
To help us quote quickly, send us:
- Photos showing the whole system and its surroundings
- The paperwork from the last visit, if you have it
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- The postcode and the type of business
Here’s what helps us quote: the address, the type of site and when it’s open, pictures of the system and any previous report or certificate. Once you have those, give us a ring on 0345 646 2711, or email photos.
What your team can do, and what needs us
Some jobs should never be done in-house: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease call for the right kit, training and safe access. That is our job.
Logging matters as much as cleaning. A simple log of filter washes, wipe-downs and checks shows an inspector that the system is looked after between visits, alongside our reports.
Looking after it afterwards
How long the results last depends on use and care. Here’s what we suggest:
- Flag stale or damp smells in the supply air
- Report water on the plant room floor
- Book the next check in line with the report
- Keep filter changes on time and recorded
Stick to the filter change schedule, because good filters protect everything downstream. Record each change in the maintenance log.
Don’t let leaves, litter or stored materials build up near the fresh air intake. Anything around the intake is likely to be drawn in.
Shenleybury: your questions answered
Can you come to Shenleybury after we close?
Yes, nights and weekends are routine for us. It means the site in Shenleybury keeps running as normal. Tell us your opening hours when you ask for a quote.
Do you work in villages like Shenleybury?
Yes, we work in villages as well as towns, and Shenleybury is covered. Photos of the system and directions to the site help us plan the visit.
What if parts of the system cannot be reached?
They’re marked on the report. Often the fix is extra access, such as new panels in ductwork, which we can install.
Do you offer maintenance contracts?
Yes, of course. Tell us what you have and how it’s used and we’ll propose a schedule with a fixed quote.
Do you repair air handling units?
AHU cleaning is what we offer here, not mechanical repairs. If we spot a fault, we note it in the report for your maintenance team to follow up.
Can you price the work without visiting?
Typically, yes. Send wide shots, close-ups of any access panels and anything that worries you, and a fixed quote normally follows within one working day. Some sites still need a visit, and we will say so.
Can you come out in an emergency?
Yes, 24/7. Our office is open from 8am to 6pm on weekdays, with the emergency line covering every other hour.
Can one contract cover all our sites?
Yes. Send the list of sites and the work at each and you’ll get one fixed quote.
What AHU cleaning looks like in Shenleybury
Food Standards Agency data includes about 7 schools, colleges and universities and about 8 hospitals, care homes and childcare premises within about 1.5 miles of central Shenleybury. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. We cover Shenleybury, about 16 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. The nearest hospital to Shenleybury is Kingsley Green, about 0.7 miles west. Clean air matters most where people are unwell, and that’s as true in a care home as in a hospital.
Kingsley Green, about 0.7 miles west, is the nearest hospital to Shenleybury, and healthcare sites of every size need their supply air kept clean.
Shenleybury is about 3 miles north of Borehamwood, in Hertfordshire. If you need AHU cleaning in Shenleybury, please give us a ring on 0345 646 2711, or email photos for a fixed quote. Our area covers London and the South East, Shenleybury included. Shenleybury is one of 381 towns, villages and districts in Hertfordshire where we work for AHU cleaning. We also work in London, about 16 miles from Shenleybury.
Work in WD7 follows the same survey, fixed quote and written report as everywhere else we cover. AHU cleaning is available to premises on Hugo Gryn Way, Farm Close and Shenleybury and the roads around them. Nearby, we also carry out AHU cleaning in Broad Colney (1 mile north-west), London Colney (1 mile north), Tyttenhanger (2 miles north), Colney Heath (3 miles north-east) and North Mymms (3 miles east). Larger places within reach include Watford (5 miles south-west), Hemel Hempstead (8 miles north-west), Stevenage (15 miles north), St Albans (4 miles north-west), Welwyn Garden City (8 miles north-east) and Harpenden (8 miles north).
Around Shenleybury
We work in commercial kitchens and buildings around The Black Lion pub, Manor Lodge School and North Mimms Park. The closest station to Shenleybury is Radlett station, about 1.8 miles south-west. Well-known places in the area include Hilfield Castle (4 miles south-west) and The Maltings (3.8 miles north-west). Green spaces nearby include Verulamium Lake and Broad Colney Lakes.