Hampshire · Air handling unit cleaning
AHU Cleaning in Liss Forest
AHU cleaning in Liss Forest from ventilation hygiene specialists trading since 2009. Evenings, overnight and weekends, plus a 24/7 emergency line.
- Drain trays holding standing water
- Intake sections clogged with outdoor debris
- Stale or musty smells from the ventilation
AHU cleaning for kitchens and businesses in Liss Forest
If the units serving a building in Liss Forest have only had filter changes for years, there may be dirt on the coils, fan and casing that nobody has looked at. A full clean deals with all of it. If you are dealing with drain trays holding standing water and dirty filters cutting the airflow, we can put it right.
In rural areas, ventilation units are often in roof voids or outbuildings, which makes them easy to overlook.
A written report with photos follows each visit, so there’s a dated record of the work. Where the work is a TR19® Grease clean, the certificate is issued through the BESCA Vent Hygiene Elite portal.
- Location
- Liss Forest (GU33)
- Region
- Hampshire
- Reporting
- Photo report after each visit
- Quote
- A fixed price before any work starts
- Working hours
- When your site is closed, plus a 24/7 line
- Telephone
- 0345 646 2711
- Updated
- 30 October 2026
How the visit works
Protection comes first: sheeting goes over floors and surfaces close to the work. Then we make the system safe and start. It takes anything from half a day for one small unit to several shifts for a plant room full of them, and the area is cleaned down before we leave. If the van will struggle with a lane or gateway near Liss Forest, let us know and we’ll plan around it.
- We agree a shutdown window that suits the building.
- We take before pictures of each section of the unit.
- We work through the unit from the intake to the outlet.
- The fan and drain tray are cleaned and the drain checked.
- After photos are taken and the certificate issued.
Getting ready for the visit
- Tell us the best time to work, such as after service or at a weekend
- Mention any parking or loading restrictions
- Clear loose items from the work area
Getting a quote
Quotes are quick. Call or email with a few details and you’ll normally have a fixed price within one working day. If we need to see the system first, we book a survey around your hours.
Related advice
Looking after it afterwards
No system stays clean for ever, but care slows the build-up. Our tips:
- Check the drain tray is emptying during routine visits
- Make sure the unit’s access doors open easily
- Book the next check in line with the report
- Report water on the plant room floor
The ducts served by the unit may need attention too. Cleaning the unit and ducts together gives the best result, and we can quote for both.
Keep the area around the intake clear. Anything around the intake is likely to be drawn in.
When to call us in Liss Forest
It matters for two reasons: the unit supplies the air people breathe, and a dirty unit has to work harder. For the people using the building every day, that is the air they breathe for hours on end.
Clients usually contact us when they notice something like this:
- Rooms that smell stuffy when the system runs
- Condensate trays that will not empty
- Coils clogged with dust and debris
- Dirty filters cutting the airflow
School buildings such as Liss Infant School are normally done in the holidays, so classrooms are not disturbed.
What to look for in a quote
- When they can work, and whether that is outside your opening hours
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- What’s included in the scope, part by part
- Whether VAT is included
Common questions in Liss Forest
Is AHU cleaning available in Liss Forest?
Yes. Our area runs across London and the South East, Liss Forest included. To start, call us on 0345 646 2711 or use the quote form with a few pictures of the system.
Is Liss Forest within the area you cover?
Yes. Villages and rural sites across the South East are part of our work, Liss Forest included. Let us know about access, parking and anything unusual about getting there when you book.
Do you offer maintenance contracts?
Yes. We run scheduled maintenance contracts, set at the interval the system needs. The report from each visit recommends the next date.
Can you fix a faulty AHU?
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.
How do you protect the area?
Protection goes down first: sheeting over floors, worktops and anything close to the work. We tidy up and take our waste away before we leave.
Can you quote from photos?
Yes, if we can see what we need. If not, a site survey comes first, and the quote follows that.
Can one contract cover all our sites?
Yes. Our area covers London and the South East, so sites at different addresses can be planned together on one programme. Each site gets its own report and photos.
Which parts of an air handling unit do you clean?
Every section that collects dirt: filters, coils, tray, fan and panels. The survey confirms what’s in your unit before we quote.
What a clean will not put right
Not every problem is solved by AHU cleaning, and we’d rather say so up front. It won’t put right:
- Problems with the unit’s controls or sensors
- Dirty ducts beyond the unit itself
- Airflow problems caused by the system’s design
Not sure which it is? You can phone us on 0345 646 2711, or send details by email and we will tell you honestly before you book.
Where we work
- Supply and extract fans
- Dampers and louvres
- Drain trays
- Filter sections
- Internal panels
- Heating and cooling coils
Liss Forest buildings and their air
Food Standards Agency data includes about 11 hospitals, care homes and childcare premises in Liss Forest and the streets around it, up to about 1.5 miles out. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. Liss Forest is about 46 miles from central London, well within the area we cover across London and the South East. Evening, overnight and weekend visits are all possible. The nearest hospital to Liss Forest is Chase Community Hospital, about 3.8 miles north. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too.
If you run an office near Liss station, its supply ductwork can gather dust for years before anyone looks inside. Chase Community Hospital, about 3.8 miles north, is the nearest hospital to Liss Forest, and healthcare sites of every size need their supply air kept clean.
Liss Forest is about 4 miles north-east of Petersfield, in Hampshire. Across the GU33 area, we cover AHU cleaning for commercial sites. Our area takes in 683 places across Hampshire, large and small. Our Portsmouth page covers sites nearby (19 miles or so).
AHU cleaning in GU33 follows the same survey, fixed quote and written report as everywhere else we cover. AHU cleaning is available to premises on Forest Road, Warren Road and Newfield Road and the roads around them. If your site is just outside Liss Forest, we cover The Mint (1 mile south-east), Liss (1 mile south), West Liss (1 mile south), Greatham (1 mile north) and Rake (1 mile south-east). Further out, we also cover Havant (14 miles south), Fleet (15 miles north), Horndean (11 miles south-west), Aldershot (14 miles north), Alton (8 miles north-west) and Waterlooville (13 miles south-west).
Near you in Liss Forest
Locally, jobs take us to businesses close to The Temple Inn, among other places. Liss Forest’s nearest station is Liss station, about 0.7 miles south-west. Well-known places in the area include Chase Community Hospital (3.8 miles north) and The Romany Museum (3.7 miles north-west). Green spaces nearby include Liss Riverside Railway Walk North and Wheatham Hill.
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.
Filters
Filters are the first line of defence in the unit. As part of the clean, filters are checked and cleaned or replaced as agreed, and the housing around them is cleaned too.
Multi-site and managed buildings
Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person must assess and reduce fire risk, and that can be the employer, the owner, a landlord, a facilities manager or a managing agent. Where responsibility is shared, records matter even more.
Whether it’s one building or many, you get the same standard: a survey first, a fixed quote, the work timed around the site and a report with photos.
More services for Liss Forest
What affects the cost of AHU cleaning
Sites vary more than people expect. What affects the quote:
- Parking and loading at the site
- The size of the system
- One-off work versus a regular cycle
- Access, including roofs, risers and ceiling voids
When the work has to happen, how we reach it and how big the site is all affect the cost. We take each of them into account, and the price is fixed before we start.
Helping us quote
To help us quote quickly, please include:
- The times we could work without disrupting the site
- The site address and the type of premises
- How we’d reach plant on a roof or in a plant room
- Any previous report or certificate
To get a fixed quote, call us on 0345 646 2711, or email photos and tell us the type of site, your opening hours and roughly what the system looks like. A few pictures and your last certificate or report help a lot. We typically come back within one working day.