Hampshire · Air handling unit cleaning
Air handling unit cleaning in Longmoor, Hampshire
AHU cleaning in Longmoor from ventilation hygiene specialists trading since 2009. Evenings, overnight and weekends, plus a 24/7 emergency line.
- Dust built up on fan impellers
- Stale or musty smells from the ventilation
- Air handling units due a clean after building work
AHU cleaning for kitchens and businesses in Longmoor
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 before any cleaning starts. If you are dealing with plant that needs cleaning after a refit and dust built up on fan impellers, we can put it right, from internal panels, dampers and louvres and filter sections onwards.
In rural areas, ventilation units are often in roof voids or outbuildings, where filters and drain trays get forgotten.
The sign-off is always in writing: a dated report with photos of the work, plus a certificate through the BESCA Vent Hygiene Elite portal when the work is a TR19® Grease clean. It shows what was done and what, if anything, couldn’t be reached.
- Where
- Longmoor (GU33)
- Region
- Hampshire
- Records
- Photo report after every visit
- Quote
- A fixed quote up front
- When we work
- Nights, weekends or holidays to suit you
- Call
- 0345 646 2711
- Reviewed
- 30 October 2026
Signs you need AHU cleaning in Longmoor
An AHU’s intake draws in outdoor air and everything in it: dust, pollen, leaves and debris. Most of it lands at the intake and the first stage of filters, and the finer material travels on.
Signs it’s time to call us include:
- Plant that needs cleaning after a refit
- Air handling units never cleaned inside
- Blocked condensate drains and slimy trays
- Dust built up on fan impellers
Hospitals such as Chase Community Hospital (about 2.3 miles north) show how much a building can rely on clean ventilation, and smaller healthcare sites near Longmoor are no different.
Comparing quotes
- Whether they’re fully insured
- Whether the whole system is included, or only the parts that are easy to reach
- What records you will receive afterwards
- How VAT is shown on the quote
How it works
The first job on site is protection: floors, worktops and anything near the work are covered. After that, the system is made safe and the work begins. It takes from a few hours for a compact unit to a day or more for a large one, and the area is cleaned down before we leave. If the van will struggle with a lane or gateway near Longmoor, let us know and we will plan around it.
- First the unit is surveyed, from pictures or a visit, and the scope agreed.
- The unit is shut down with your site team and the area protected.
- 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.
Getting ready for the visit
- Let us know about parking and loading
- Agree a time when the area can be out of use
- Clear the space around the work
Ask for a quote
To get a fixed quote, ring 0345 646 2711 or drop us a line and tell us the type of site, your opening hours and roughly what the system looks like. A few photos and your last certificate or report help a lot. You’ll typically have a quote within one working day.
Advice
When it’s something else
We will not sell you work that does not address the problem, so these are the things it won’t cover:
- Airflow problems caused by the system’s design
- Faulty motors, drives or bearings
- Ductwork downstream of the unit, which is a separate clean
If you are not sure, just give us a ring on 0345 646 2711, or send details by email and we will give you a straight answer.
Where we work
- Internal panels
- Filter sections
- Drain trays
- Dampers and louvres
- Supply and extract fans
- Heating and cooling coils
Different parts, different methods
Internal casing and panels
Damaged internal linings or loose panels can shed material into the air. We note any we find in the report.
Heating and cooling coils
Dirt on a coil slows the air and makes it harder for the coil to heat or cool. A clean gets air moving through the coil properly again.
Longmoor: your questions answered
Can the work in Longmoor be done at night or at weekends?
Yes. We work evenings, overnight and at weekends. It means the site in Longmoor keeps running as normal. When you give us a ring on 0345 646 2711, or email photos, mention when the site is quiet.
Is Longmoor in your area for AHU cleaning?
Yes, Longmoor is within the area we cover across London and the South East. Just phone us on 0345 646 2711 or email us with a few details of the site.
Do you need to switch the unit off?
Yes. Cleaning needs the unit off and isolated, and we time the work to suit the site.
What types of premises do you cover?
Any site with a kitchen or a ventilation system to look after, from a small pub to a hospital. We work with hotels, schools, care homes, offices, retail and leisure sites.
How much notice do you need?
It depends on the time you need and how big the job is. Tell us your preferred dates when you ask for a quote, and if it’s an emergency, call us any time.
What is TR19?
BESA’s ventilation hygiene specification, with two parts that matter most here: TR19® Grease for kitchen extracts and TR19® Air for supply and extract systems. It is not legislation, but it’s the standard people check against.
What’s included in an AHU clean?
Filters, coils, drain trays, the fan and the internal surfaces are all covered. What happens to the filters is agreed when we quote.
Can you fix a faulty AHU?
AHU cleaning is what we offer here, not mechanical repairs. Any faults we notice are recorded for your maintenance team to follow up.
For landlords and multi-site operators
For anyone managing more than one site, we can plan visits across the whole estate and price them together. Every building has its own written report, so each one has its own record.
Facilities teams in offices, schools and healthcare sites book us too across Hampshire. Work can be phased by floor, building or site around the people who use them.
Leave it or put it right?
Cleaning a unit while it only has light dust is quick. Leave it for years and dirt bakes onto coils and casings, particularly where damp has made it stick. If the system at a site near Longmoor fails, there may be nowhere nearby to move to.
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.
Why Longmoor businesses choose us
- Evenings, overnight and weekends, plus 24/7 emergency callout
- Fixed quotes, usually within one working day
- CHAS, SafeContractor and ISO 9001
- We are fully insured
What your team can do, and what needs us
Some jobs should never be done in-house: entering ducts, working on fans, testing dampers and taking grease readings need training, the right equipment and safe access. That’s our job.
When your team notices a problem between visits, like drips, unusual noise, smells or damaged filters, it’s best reported rather than tackled in-house. We’ll take a look and give you a fixed quote.
Places near Longmoor
Other services in Longmoor
Ventilation in Longmoor buildings
Chase Community Hospital is the nearest hospital, about 2.3 miles north of Longmoor. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients. Longmoor is about 45 miles from central London, well within the area we cover across London and the South East. The visit is fixed around your opening hours, not ours.
Wherever a school like Greatham Primary School has ducted ventilation, a half-term visit keeps the work out of lesson time.
Longmoor is about 3 miles south of Bordon, in Hampshire. For AHU cleaning in and around Longmoor, please ring 0345 646 2711, or send details by email for a fixed quote. Our area covers London and the South East, including Longmoor. We cover 683 places across Hampshire, from busy centres to quieter spots. There’s also a page for Guildford, about 18 miles away.
Every address in GU33 is within our area for AHU cleaning, from the main roads to the quietest streets. You will find streets such as Woolmer Road, Roberts Road and Methuen Road, and we cover them all for AHU cleaning. If your site is just outside Longmoor, we cover Greatham (1 mile west), Woolmer (1 mile north-west), Liss Forest (2 miles south-west), The Mint (2 miles south) and Blackmoor (2 miles north-west). Larger places within reach include Havant (15 miles south), Fleet (14 miles north), Horndean (13 miles south-west), Aldershot (13 miles north), Alton (7 miles north-west) and Waterlooville (15 miles south-west).
What’s near Longmoor
For rail, the closest station is Liss station, about 2.3 miles south-west of the centre. Well-known places in the area include The Romany Museum (3.4 miles north-west) and Chase Community Hospital (2.3 miles north). Green spaces nearby include Wheeler's Down and Liss Riverside Railway Walk North.