Surrey · Air handling unit cleaning
AHU Cleaning in Grafham
Air handling unit cleaning in Grafham, surveyed first and signed off with a written report and pictures. Call for a fixed quote.
- Air handling units never cleaned inside
- Filters that are clogged or overdue
- Dirty coils holding back the airflow
AHU cleaning in Grafham, done properly
Where a building in Grafham has had little more than filter changes, the coils, fan and casing can be carrying far more dirt than anyone has seen. A full AHU clean takes in the whole unit. If you’re dealing with air handling units due a clean after building work and plant that has been serviced but not cleaned, we can put it right.
Rural buildings with mechanical ventilation, such as care homes and country hotels, often keep their units in roof spaces or outbuildings, which makes them easy to overlook.
Insurers, fire officers and environmental health officers all look at records. That is why every job is written up in a report with photos, and grease extract cleans come with a TR19® certificate issued through the BESCA Vent Hygiene Elite portal.
- Where
- Grafham (GU5)
- Wider area
- Surrey
- Reporting
- Written report with pictures
- Price
- Fixed quote, typically within a working day
- When we work
- Nights, weekends or holidays to suit you
- Telephone
- 0345 646 2711
- Updated
- 30 October 2026
For landlords and multi-site operators
For anyone managing more than one site, we can schedule visits across all of them on one quote. Each site gets its own report and pictures, so each one has its own record.
Records are where multi-site compliance often slips. Each visit produces a dated report with pictures, so you can show an insurer or inspector what was done at each site.
Why deal with it now?
A light clean now is simpler than a heavy one later. Years of build-up make the job longer and harder, especially where there’s been moisture. Somewhere as small as Grafham, losing a kitchen or building to a fault is felt by everyone who uses it.
A single site or a whole portfolio, the quote is built the same way: the work involved, the access and the timing. The price is fixed before work begins.
What you get with us
- CHAS and SafeContractor accredited, with ISO 9001
- A written report with pictures after each visit
- Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
- Trading since 2009
When to call us in Grafham
Cooling coils create condensation, and that water has to go somewhere. If the drain tray outlet blocks or the tray doesn’t fall properly, water stands in it, and that’s where slime and odours start.
Keep an eye out for any of the following:
- Condensate trays that will not empty
- Units needing a clean before a new tenant or handover
- Coils clogged with dust and debris
- Plant that has been serviced but not cleaned
Around Grafham, as anywhere, ventilation cleaning begins with an inspection.
Questions to ask before booking
- Whether the work can be done while the site is closed
- Whether the figure could change on the day
- What insurance they carry
- What’s included in the scope, part by part
Keeping the system healthy
After the visit, a few habits help the work last:
- Report musty smells from the vents straight away
- Book the next check in line with the report
- Keep inspection doors on the unit in good order
- Clear leaves and litter away from the intake
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.
Keep the area around the intake clear. What’s near the intake ends up in the unit.
Common questions in Grafham
Do you offer AHU cleaning in Grafham?
Yes. Our area runs across London and the South East, Grafham included. A fixed quote usually follows within one working day of the survey details.
Do you work overnight in Grafham?
Yes, nights and weekends are routine for us. Your customers, staff or residents in Grafham needn’t be disturbed. When you give us a ring on 0345 646 2711 or use the quote form, mention when the site is quiet.
Which parts of an air handling unit do you clean?
The main parts are the filters, coils, drain tray, fan and inside of the casing. We confirm the scope after looking at the unit.
Is a quote from pictures possible?
In many cases, yes. With good pictures, the site type and your last report, we can price many jobs. Larger or hidden systems need a survey on site first.
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.
What types of premises do you cover?
All kinds of commercial and public premises: from restaurants, pubs and hotels to schools, hospitals, care homes, offices, shops and food production sites. We fit the work around how the site operates.
Do you repair air handling units?
Mechanical repairs to the unit are for your HVAC maintenance contractor. We’ll flag anything we notice during the clean.
Is there a report after cleaning?
Yes, both a certificate and a report with pictures. The report also suggests when the unit should next be inspected.
How it works
Your staff don’t need to do much on the day. Someone lets us in at the agreed time and shows us where everything is, and the rest is down to us. Before we leave, the area is tidied and the paperwork follows. If you can send pictures, we can arrive in Grafham knowing what to expect.
- We agree a shutdown window that suits the building.
- Before cleaning, each section is photographed.
- Filters, coils and internal surfaces are cleaned from intake to discharge.
- The fan and drain tray are cleaned and the drain checked.
- After pictures are taken and the certificate issued.
How to prepare
- Let us know how we reach the system, including roofs, risers and plant rooms
- Find the previous report, if there is one
- Agree a time when the area can be out of use
Ask for a quote
Some systems can be priced from pictures; others need a survey. Big or complicated sites, and systems that are hard to see in pictures, get a survey first. Either way, the quote is fixed before any work is booked.
Related advice
AHU cleaning in Grafham: local notes
At about 30 miles from central London, Grafham sits well inside the area we cover. We work evenings, overnight and at weekends, so the visit fits around the site. The nearest hospital to Grafham is Milford Hospital, about 3.7 miles west. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
Healthcare buildings such as Milford Hospital, about 3.7 miles west, depend on their ventilation; if you manage a surgery, clinic or care home near Grafham, yours matters too.
Grafham is about 6 miles south of Guildford, in Surrey. Every kind of commercial site in Grafham, AHU cleaning is something we can help with. Visits can be booked for evenings, overnight or weekends so the site keeps running. Grafham is one of 395 places in Surrey we cover for AHU cleaning. We also work in Guildford, about 6 miles from Grafham.
We cover every part of GU5 for AHU cleaning and the roads nearby. If your site is just outside Grafham, we cover Birtley Green (1 mile north), Shamley Green (1 mile north), Thorncombe Street (1 mile west), Stroud Common (1 mile north-east) and Rowly (2 miles east). We also work in nearby towns such as Guildford (6 miles north), Woking (11 miles north), Camberley (14 miles north-west), Farnham (11 miles west), Reigate (15 miles east) and Dorking (10 miles north-east).
What’s near Grafham
In Grafham, that means kitchens and buildings near Cucknell's Wood. For rail, the closest station is Chilworth station, roughly 3.5 miles north of the centre. Well-known places in the area include Godalming Museum (3.6 miles north-west) and Guildford Castle (4.9 miles north). Not far away are St Martha's Hill and Colyer's Hanger and Lower Lake.
What the work involves, part by part
Internal casing and panels
The inside walls and floor of the casing collect dust and debris. Each section is cleaned from the intake through to the outlet.
Heating and cooling coils
Because cooling coils run wet, the dirt on them tends to cling. The coil and its drain tray are cleaned as one job.
Other services in Grafham
In-house cleaning or a specialist?
In-house cleaning and specialist cleaning do different jobs. A daily filter wipe and a weekly filter wash keep grease down at the front of the system, but they do not reach the grease that builds up further in. Reaching it takes a specialist with the right equipment.
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.