Hampshire · Air handling unit cleaning
The Frenches AHU cleaning
AHU cleaning in The Frenches from ventilation hygiene specialists trading since 2009. Evenings, overnight and weekends, plus a 24/7 emergency line.
- Stale or musty smells from the ventilation
- Drain trays holding standing water
- Air handling units due a clean after building work
How we handle AHU cleaning in The Frenches
All the building’s air passes through the fan, so dirt on the impeller and housing gets spread around. Fan, housing and the surrounding panels are cleaned as part of the job, once the unit has been shut down and isolated. If you have debris and leaves in the fresh air intake and air handling units due a clean after building work, we can put it right.
For a building in or near The Frenches, 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.
For insurers and inspectors, the record counts. So every job comes with a written report and pictures, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Where
- The Frenches (SO51)
- Wider area
- Hampshire
- Records
- Photo report after every visit
- Price
- A fixed quote up front
- Working hours
- Evenings, overnight and weekends; 24/7 emergencies
- Call
- 0345 646 2711
- Updated
- 30 October 2026
Ventilation in The Frenches buildings
Romsey Community Hospital is the nearest hospital, about 3.4 miles east of The Frenches. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes.
For buildings in and around The Frenches, TR19® Air cleaning starts with an inspection.
The Frenches is about 3 miles west of Romsey, in Hampshire. Whether your site is in the middle of The Frenches or further out, we cover AHU cleaning for every kind of premises, from a single unit to a large public building. 683 places in Hampshire are on our list, from busy centres to quieter spots. There’s also a page for Southampton, roughly 9 miles from The Frenches.
Our technicians cover all of the SO51 postcode area for AHU cleaning and the roads nearby. If your site is just outside The Frenches, we cover Shootash (1 mile east), Plaitford Green (2 miles west), West Wellow (2 miles south-west), East Wellow (2 miles south) and Blackhill (3 miles south). We also work in nearby towns such as Winchester (11 miles east), Eastleigh (10 miles east), Andover (15 miles north), Totton (6 miles south-east), Chandler's Ford (8 miles east) and Hedge End (13 miles south-east).
Near you in The Frenches
The nearest railway station is Mottisfont & Dunbridge station, about 2.5 miles north of the centre. A little further out are King Johns House (2.7 miles east) and Romsey Community Hospital (3.4 miles east). Not far away are Copythorne Common.
What your team can do, and what needs us
Keep a record of what your team does. A simple log of filter washes, wipe-downs and checks helps show that the system is managed between specialist visits, alongside our reports.
A few tasks are always specialist work: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease call for the right kit, training and safe access. Leave those to us.
Landlords, agents and facilities managers
We work for landlords, managing agents and facilities managers as well as the people running the site. Where a system serves more than one tenant, such as a shared riser, it helps to agree who arranges the work, and we are happy to quote for all of it.
From a single site to a large estate, the standard is the same: the system surveyed, the price fixed, the visit fitted around trading and everything written up afterwards.
Signs you need AHU cleaning in The Frenches
Air handling units are normally tucked away on roofs, in plant rooms or above ceilings, so they’re easy to forget about. Months can pass without anyone looking inside.
It’s time to book a visit if you see:
- Dust built up on fan impellers
- Dirty coils holding back the airflow
- Plant that has been serviced but not cleaned
- Debris and leaves in the fresh air intake
Healthcare buildings such as Romsey Community Hospital, about 3.4 miles east, depend on their ventilation; if you manage a surgery, clinic or care home near The Frenches, yours matters too.
Comparing quotes
- How areas they cannot reach will be recorded
- If the quote is a fixed price or an estimate
- What insurance they carry
- What hours they’ll be on site
Different parts, different methods
Heating and cooling coils
Coil fins are close together and catch the dust the filters miss. We clean them with care so the fins aren’t damaged.
Drain trays
Drain trays can rust and leak over time. We record their condition with photos so repairs can be planned.
Aftercare tips
Looking after the system between visits is straightforward, and it helps at the next visit:
- Report musty smells from the vents right away
- Book the next check in line with the report
- Change filters on schedule and log each change
- Make sure condensate is draining away
Keep filter changes on schedule between cleans, as that does more than anything to keep the unit clean. Record each change in the maintenance log.
Keep the area around the intake clear. What’s near the intake ends up in the unit.
Places near The Frenches
Other services in The Frenches
What happens on the day
We turn up at the time agreed with you, often in the evening, overnight or at the weekend so the site keeps working. Equipment that has to be off is switched off and allowed to cool first, and the area around the work is covered and protected. The work itself takes anything from half a day for one small unit to several shifts for a plant room full of them. Photos of the system and how to reach it help us plan a visit to The Frenches.
- We look at the unit and the plant area during the survey.
- We sheet the area and the unit is isolated.
- 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.
Getting ready for the visit
- Let us know about parking and loading
- Agree a time when the area can be out of use
- Have your last certificate or report to hand
Getting a quote
There’s no standard price list, because no two systems are the same. We look at your system first, from photos or on a visit, then send a fixed quote. To start, give us a ring on 0345 646 2711, or send details by email.
Related advice
Why act early in The Frenches
Cleaning a unit while it only has light dust is quick. Leave it for years and dirt bakes onto coils and casings, especially where there’s been moisture. Equipment tucked in a roof space or outbuilding near The Frenches rarely gets looked at unless someone books it.
Working hours, access and the scale of the site can all change the price. Each of those is built into the quote and give you a fixed price before work begins.
What you get with us
- One number for every site across the South East and London
- Ventilation hygiene specialists since 2009
- Fixed quotes, usually within one working day
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
The Frenches: your questions answered
Can you come to The Frenches after we close?
Yes. We work evenings, overnight and at weekends. The site is handed back ready to open. Just call 0345 646 2711, or send details by email with your opening times and we will plan around them.
Do you do school ventilation cleaning in The Frenches in the summer holidays?
Yes. The holidays are the usual time for school work. Food Standards Agency records list about 2 schools, colleges and universities with registered kitchens within about a mile and a half of The Frenches. Send us your term dates when you ring 0345 646 2711 or email us, and we will fit the work in.
Can one contract cover all our sites?
Yes. One number covers all your sites across London and the South East, and visits can be set on a regular cycle.
Do you clean the ductwork as well?
Yes, the ductwork, grilles and diffusers the unit serves. We will tell you after the survey whether the ducts need it.
How much does AHU cleaning cost in The Frenches?
There’s no set price, as it depends on the job: the size of the system, its condition, access and when we can work. We fix the price before we start.
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.
Can you price the work without visiting?
Often, yes. With good pictures, the site type and your last report, we can price many jobs. Where we can’t see enough, we arrange a survey.
Will you repair the fan or motor?
The clean includes noting faults, but repairs sit with your maintenance contractor, with the details in the report.