Surrey · Air handling unit cleaning
AHU Cleaning in Irons Bottom
AHU cleaning in Irons Bottom from ventilation hygiene specialists trading since 2009. Out-of-hours visits and 24/7 emergency callout.
- Units needing a clean before a new tenant or handover
- Drain trays holding standing water
- Fan sections that haven’t been cleaned in years
What the work involves, part by part
Fans and fan sections
The fan moves all of the unit’s air, so dirt on it gets spread around. The impeller, its housing and the fan chamber are cleaned.
Internal casing and panels
We open each section through its doors and close them securely when we’re done before the unit is handed back.
About our AHU cleaning in Irons Bottom
We clean the parts of the unit where dirt and moisture gather: filters, coils, drain trays, fans and the internal panels. Every clean comes with a TR19® certificate and before and after pictures in a report. If you are dealing with blocked condensate drains and slimy trays and dust-coated heating and cooling coils, we can put it right, from dampers and louvres, supply and extract fans and heating and cooling coils onwards.
For a building in or near Irons Bottom, access is agreed in advance and the visit is planned around the journey.
Think of the report as the system’s health record: a dated account with pictures of everything we did. For TR19® Grease cleans, the certificate comes through the BESCA Vent Hygiene Elite portal, ready for your insurer.
- Place
- Irons Bottom (RH2)
- Region
- Surrey
- Paperwork
- Written report with photos
- Quotes
- Fixed quote, typically within a working day
- Working hours
- After hours by arrangement; emergencies any time
- Call
- 0345 646 2711
- Last updated
- 30 October 2026
Common problems we fix in Irons Bottom
Wherever there’s a cooling coil, there’s condensate. A blocked outlet or a badly sloped tray leaves standing water, and that is where slime and odours start.
Look out for any of the following:
- Air handling units never cleaned inside
- Dirty filters cutting the airflow
- Stale or musty smells from the ventilation
- Intake sections clogged with outdoor debris
If you run a surgery, dental practice or care home near Irons Bottom, clean ventilation matters as much to you as to a hospital like East Surrey Hospital (about 2.3 miles north-east).
What to look for in a quote
- When they can work, and whether that is outside your opening hours
- Whether they’re fully insured
- What records you’ll receive afterwards
- How they set the interval to the next visit
Landlords, agents and facilities managers
Records are where multi-site compliance often slips. Each visit ends with a dated report and photos, so you can show an insurer or inspector what was done at each site.
Facilities teams in offices, schools and healthcare sites book us too in Irons Bottom and across Surrey. Work can be phased by floor, building or site to keep disruption down.
AHU cleaning around Irons Bottom
Food Standards Agency data includes about 3 schools, colleges and universities within 1.5 miles or so of the middle of Irons Bottom. Buildings like these often rely on mechanical ventilation, which TR19® Air covers. About 21 miles out from central London, Irons Bottom is part of the South East area we work across. We work evenings, overnight and at weekends, so the visit fits around the site. About 2.3 miles north-east of Irons Bottom is East Surrey Hospital, the nearest hospital. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes.
For schools like Burys Court School, the holidays are the usual time to inspect and clean ventilation.
Irons Bottom is about 2 miles south of Reigate, in Surrey. Whatever kind of site you run in Irons Bottom, we can take on AHU cleaning. We can work out of hours so trading is not interrupted. We cover 395 places across Surrey, large and small. Guildford is in our area too, around 16 miles away.
Postcode districts we cover here for AHU cleaning: RH2. Close by, we work in Sidlow (1 mile north-east), South Park (2 miles north), Leigh (2 miles west), Dawesgreen (2 miles west) and Reigate (2 miles north). We also work in nearby towns such as Epsom (9 miles north), Horley (3 miles south-east), Redhill (3 miles north-east), Ewell (11 miles north), Walton-on-Thames (15 miles north-west) and Caterham (8 miles north-east).
What’s near Irons Bottom
Typical jobs here are in premises near Earlswood Common and Reigate School. The nearest railway station is Salfords station, about 2.1 miles east of the centre. Nearby you’ll also find Reigate Castle (2.5 miles north) and Reigate Priory Museum (2.2 miles north). Open spaces near Irons Bottom include Mercers Lake and Colley Hill.
Aftercare tips
Once we have finished, these simple steps help:
- Report musty smells from the vents right away
- Diary the inspection date recommended in the report
- Do not store bins or materials near the intake
- Note any water around the unit or leaks below it
If the ductwork hasn’t been cleaned, consider it next. Cleaning the unit and ducts together gives the best result, and we can quote for both.
Make the drain tray part of every maintenance visit. A drain that’s cleared early never gets to the slime stage.
Places near Irons Bottom
Other services in Irons Bottom
What affects the cost of AHU cleaning
You will get a fixed price before we start. It takes into account:
- Travel, parking and unloading
- A single visit or a regular plan
- Whether several sites go on one quote
- How big the system is
Combining work into one visit or one programme can make for a more efficient booking. Mention every system or site you need covered, and you will get one fixed quote.
Asking for a quote
The more you tell us, the more accurate the quote. When you get in touch, it helps to send:
- Where the site is and what kind of site it is
- Your last certificate, test record or report
- A few general shots of the system
- Detail shots of panels, filters and grilles
We do not publish a price list, because no two systems are the same. Instead, we look at your site first, from pictures or a survey, and then give you a fixed quote. To get going, call 0345 646 2711 or email us.
What happens on the day
We start by comparing what we find with the survey or your photos. Anything unexpected is raised with you before we go further. From there, it takes from a few hours for a compact unit to a day or more for a large one. Pictures of the system and its access let us plan the work in Irons Bottom before we set off.
- First the unit is surveyed, from photos or a visit, and the scope agreed.
- With your site team, the unit is switched off and isolated, then the area around it protected.
- We clean or change the filters as agreed, then clean the coils, fan and internal panels.
- We clean out the drain tray and make sure it drains.
- We close up the unit and send the certificate and before and after pictures.
Before we arrive
- Clear the space around the work
- Let us know when the site is closed or quiet
- Find the previous report, if there is one
How to get 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
Staff cleaning versus specialist work
For ventilation and air handling systems, in-house care is mostly about checks: keeping grilles clear, noting unusual noise or smells and logging filter changes. Cleaning inside ducts and units is specialist work.
Your own staff can handle the daily basics: wiping canopies, washing grease filters and recording it in a log. Inside the ducts, risers and fan is specialist work, which is where we come in.
Questions from Irons Bottom
Do you cover smaller places like Irons Bottom?
Yes, we work in villages as well as towns, and Irons Bottom is covered. Just mention lanes, gates or anything else about the site when you book.
Can you work in Irons Bottom outside opening hours?
Yes. We work evenings, overnight and at weekends. That way a site in Irons Bottom doesn’t have to lose a day’s trading. Just phone us on 0345 646 2711 or drop us a line with your opening times and we’ll plan around them.
What do you clean inside the unit?
All the internal parts the air touches, from the intake and filters through the coils and fan to the outlet. You get a photo report showing each part before and after.
What is TR19?
TR19® is BESA’s specification for ventilation hygiene. TR19® Grease, a standalone specification since 2019, covers grease in kitchen extract systems, and TR19® Air covers general supply and extract systems.
Do you work with multi-site operators?
Yes. Send the list of sites and the work at each and you will get one fixed quote.
How long does it take to clean an air handling unit?
It takes half a day to a full day per unit, with large plant planned over several shifts. The unit’s size and condition make the biggest difference, and we’ll confirm the time when we quote.
What happens if you cannot reach some of it?
They’re marked on the report. Often the fix is extra access, such as new panels in ductwork, and we can fit those.
Are you insured?
Yes. We’re fully insured, and we can share the details when you need them.