Hertfordshire · Air handling unit cleaning
Air handling unit cleaning in Long Marston, Hertfordshire
Need AHU cleaning in Long Marston? We survey first, give you a fixed quote and work around your opening hours, finishing with a written report and photos.
- Condensate trays that will not empty
- Dirty fans and fan housings
- Air handling units never cleaned inside
AHU cleaning in Long Marston, done properly
A cooling coil drips condensate into a tray that should drain away. If the outlet blocks, standing water and slime build up, in the airstream that feeds the building. Clearing and cleaning the tray is central to every AHU clean. The work covers dampers and louvres, drain trays and supply and extract fans, and common reasons people get in touch are odours coming through the supply air and intake sections clogged with outdoor debris.
In rural areas, ventilation units are often in roof voids or outbuildings, where filters and drain trays get forgotten.
The report is your system’s health record: a dated account with pictures of everything we did. Grease extract cleans are also certificated to TR19® Grease through the BESCA VHE portal, ready for your insurer.
- Place
- Long Marston (HP23)
- Region
- Hertfordshire
- Paperwork
- Written report with photos
- Quotes
- Fixed quote, normally within a working day
- When we work
- Overnight and weekend work, 24/7 emergency callout
- Telephone
- 0345 646 2711
- Reviewed
- 30 October 2026
What affects the quote in Long Marston
The price is fixed before any work begins. It takes into account:
- The condition of the system
- The number of sites or systems
- How easy every part is to reach
- One-off work versus a regular cycle
When the work has to happen, how we reach it and how big the site is can all change the price. We take each of them into account and give you a fixed price before work begins.
What we need to know
To help us quote quickly, please include:
- Where the site is and what kind of site it is
- Your last certificate, test record or report
- How we’d reach plant on a roof or in a plant room
- A few general shots of the system
The quickest way to a quote is to send photos: wide shots of the system, close-ups of anything that worries you and how we’d get to it. Tell us what kind of site it is and when it’s open, and we can price many jobs without a visit.
Leave it or put it right?
A slimy drain tray only gets worse. Leave it and you risk overflows, leaks into the space below and odours carried round the building. Clearing it now is a much smaller job. In a small place like Long Marston, a system that fails can take a site out of use.
What you pay depends on how big the system is, the condition it’s in and access to every part of it. We give you a fixed price before work begins, so you know where you stand.
What you get with us
- CHAS, SafeContractor and ISO 9001
- A single point of contact for sites across the South East and London
- A fixed price before any work starts
- We diagnose before we treat
Read our cost guide and how to check a contractor.
How the visit works
Every visit runs to the same pattern: sheeting and protection first, make the system safe, do the work, tidy up and leave you the report. On site, the work takes half a day to a full day per unit, with large plant planned over several shifts. If you can send photos, we can arrive in Long Marston knowing what to expect.
- We survey the unit from pictures or on site and agree what’s included.
- We arrange the shutdown with your staff and sheet the area.
- Filters are dealt with as agreed, and the coils, fan and casing cleaned.
- Standing water and slime come out of the tray and the drain is checked.
- You get a TR19® certificate and a photo report.
Before we arrive
- Move anything stored near the system
- Arrange a key holder or contact on site
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
How to get a quote
For AHU cleaning in Long Marston, phone us on 0345 646 2711 or drop us a line. Let us know the site type and the opening hours, and send pictures or your last report if you can. We usually send a fixed quote within one working day.
Read more
What AHU cleaning cannot fix
We will always give you a straight diagnosis, so here’s what AHU cleaning won’t do:
- Ductwork downstream of the unit, which is a separate clean
- Building management system faults
- Mechanical faults with motors, belts or bearings
If in doubt, call 0345 646 2711, or email photos and we will say what we think before you book.
What the work covers
- Filter sections
- Drain trays
- Heating and cooling coils
- Dampers and louvres
- Supply and extract fans
- Internal panels
Staff cleaning versus specialist work
Good housekeeping makes our visits easier, not unnecessary. Clean filters and tidy surfaces slow the build-up, but the parts you can’t see still need a specialist at the right interval.
Your own staff can handle the daily basics: wiping canopies, washing grease filters and recording it in a log. What they can’t safely do is clean inside the ductwork, the fan or the risers, and that’s where we come in.
Other services in Long Marston
Aftercare tips
Good habits slow the build-up between visits. Our tips:
- Report musty smells from the vents straight away
- Look at the condensate drain whenever the unit is serviced
- Book the next check in line with the report
- Watch for drips or damp patches near the plant
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 instead of leaving it to guesswork.
Long Marston: your questions answered
Is Long Marston within the area you cover?
Yes. Villages and rural sites across the South East are part of our work, Long Marston included. A survey first, from pictures or a visit, means we arrive with the right kit.
Do you offer AHU cleaning in Long Marston?
Yes, we work in Long Marston and the places around it. To start, call us on 0345 646 2711 or drop us a line with a few photos of the system.
How much notice do you need?
Book as early as you can for planned work, especially if the next clean or test is due soon. Emergencies are different, because our line is open 24/7.
Which accreditations do you hold?
We are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we’re fully insured.
Do you do ventilation duct cleaning too?
Yes, the ductwork, grilles and diffusers the unit serves. The survey shows whether the ducts need cleaning now.
Can we book visits on a schedule?
Yes. Plans on a 3, 6 or 12-monthly cycle are available, to suit the system and how it’s used.
How long will the unit be out of action?
It takes anything from half a day for one small unit to several shifts for a plant room full of them. Size, layout and how dirty it is decide the rest, and the quote will give you a clear idea.
How do you protect the area?
We start with protection: sheeting over floors, worktops and anything close to the work. We tidy up and take our waste away before we leave.
Multi-site and managed buildings
Keeping records across a portfolio is half the battle. Each visit produces a dated report with pictures, so you can show an insurer or inspector what was done at each site.
The Fire Safety Order 2005 puts the duty to manage fire risk on the responsible person, which may be the employer, owner, landlord, FM or managing agent. With shared responsibility, good records help everyone.
AHU cleaning in Long Marston: local notes
At about 35 miles from central London, Long Marston sits well inside the area we cover. Visits are booked around your hours, evenings and weekends included. For Long Marston, the closest hospital is Tindal Centre, roughly 4.4 miles west. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes.
If you run a surgery, dental practice or care home near Long Marston, clean ventilation matters as much to you as to a hospital like Tindal Centre (about 4.4 miles west). Classrooms and halls at schools such as Long Marston VA Church of England Primary School are easiest to work in when pupils are away.
Long Marston is about 5 miles east of Aylesbury, in Hertfordshire. We carry out AHU cleaning for businesses, landlords and public buildings in Long Marston and the rest of Hertfordshire. 381 places in Hertfordshire are on our list, large and small. Milton Keynes is in our area too, around 14 miles away.
We cover every part of HP23 for AHU cleaning and the roads nearby. AHU cleaning is available to premises on Station Road, Chapel Lane and Bromley and nearby roads. Other places close to Long Marston include Astrope (1 mile south), Puttenham (1 mile south-west), Buckland (2 miles south), Aston Clinton (2 miles south-west) and Wingrave (3 miles north-west). Within a short drive, we also cover Hemel Hempstead (12 miles south-east), Harpenden (15 miles east), Berkhamsted (7 miles south-east), Tring (3 miles south-east), Chorleywood (15 miles south-east) and Grovehill (11 miles south-east).
Landmarks near Long Marston
The nearest railway station is Cheddington station, roughly 2.4 miles north-east. Nearby you’ll also find Tindal Centre (4.4 miles west) and Pitstone Green Museum (2.6 miles east). Not far away are Ivinghoe Beacon and College Lake nature reserve.