Surrey · Air handling unit cleaning
AHU Cleaning in Hammer
AHU cleaning in Hammer from ventilation hygiene specialists trading since 2009. Out-of-hours visits and 24/7 emergency callout.
- Coils clogged with dust and debris
- Debris and leaves in the fresh air intake
- Drain trays holding standing water
Keeping the system healthy
To keep the system working properly between visits:
- Check the drain tray is emptying during routine visits
- Report stiff or damaged access doors
- Report musty smells from the vents straight away
- Clear leaves and litter away from the intake
Once the clean is done, we send a TR19® certificate and a report with before and after pictures. Keep both with the building’s maintenance records.
Don’t let leaves, litter or stored materials build up near the fresh air intake. Anything around the intake is likely to be drawn in.
About our AHU cleaning in Hammer
A cooling coil drips condensate into a tray that should drain away. When the drain blocks, water sits there and the tray turns slimy, right in the path of the air going into the building. Clearing and cleaning the tray is central to every AHU clean. If you have dust-coated heating and cooling coils and intake sections clogged with outdoor debris, we can help, from internal panels, heating and cooling coils and drain trays onwards.
In rural areas, ventilation units are often in roof voids or outbuildings, which makes them easy to overlook.
Good records are part of the job. You get a written report with photos after every visit, covering the work done, any areas we couldn’t access and a recommended next date. File it in your maintenance log so it’s to hand when an insurer or inspector asks.
- Location
- Hammer (GU27)
- Region
- Surrey
- Reporting
- Report and photos after the visit
- Price
- A fixed price before we start
- Hours
- Evenings, overnight and weekends; 24/7 emergencies
- Telephone
- 0345 646 2711
- Page updated
- 30 October 2026
Nearby places to Hammer
What else we do in Hammer
Ventilation in Hammer buildings
There are about 6 schools, colleges and universities and about 10 care, childcare and hospital premises on the FSA’s food hygiene register in and around Hammer, up to about a mile and a half out. Busy, occupied buildings like these are where clean supply air matters most. Haslemere and District Hospital is the nearest hospital, about 2 miles east of Hammer. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale. Hammer, about 40 miles from central London, is within our usual area. We work evenings, overnight and at weekends, so the visit fits around the site.
School buildings such as Woolmer Hill School are usually done in the holidays, so classrooms aren’t disturbed.
Hammer is about 9 miles south of Farnham, in Surrey. Hammer gets the same approach as every site we work on: a survey first, a fixed quote, work timed around your hours and a report with pictures. 395 places in Surrey are on our list, from busy centres to quieter spots. For sites nearby, see our Guildford page, about 14 miles away.
Every address in GU27 is within our area for AHU cleaning, from the main roads to the quietest streets. If you need AHU cleaning at premises on Hammer Lane, Moor Road and Copse Road or anywhere close by, we can help. If your site is just outside Hammer, we cover Woolmer Hill (1 mile south), Hammer Bottom (1 mile west), Shottermill (1 mile east), Bramshott Chase (1 mile north) and Linchmere (1 mile south-west). Within a short drive, we also cover Guildford (14 miles north-east), Farnham (9 miles north), Cranleigh (12 miles east), Ash (11 miles north), Godalming (9 miles north-east) and Farncombe (10 miles north-east).
Landmarks near Hammer
We work in commercial kitchens and buildings around The Prince of Wales pub and Camelsdale Primary School and the streets around them. The nearest railway station is Haslemere station, about 1.5 miles east. Well-known places in the area include Haslemere and District Hospital (2 miles east). Open spaces near Hammer include Lynchmere Commons and Wheeler's Down.
Questions from Hammer
Can you work in Hammer outside opening hours?
Yes, out-of-hours work is a big part of what we do. Your customers, staff or residents in Hammer needn’t be disturbed. Let us know the hours you are closed and we will book within them.
Do you work in villages like Hammer?
Yes, Hammer is part of our area, however small the site. A survey first, from photos or a visit, means we arrive with the right kit.
Can you clean the ducts connected to the AHU?
Yes. Ventilation ductwork cleaning to TR19® Air is part of what we do. Cleaning the unit and ducts together often makes sense, and we can quote for both.
Do you look at the system first?
Yes. We always survey first, from your photos and details, or with a visit where necessary. A fixed quote follows.
Will you repair the fan or motor?
Mechanical repairs to the unit are for your HVAC maintenance contractor. We will flag anything we notice during the clean.
Can we book visits on a schedule?
Yes. Scheduled maintenance plans are part of what we do, set at the interval the system needs. Each report recommends when the next visit should be.
What if parts of the system cannot be reached?
We never leave them off the paperwork. You’ll know exactly which parts weren’t reached and why, along with a quote to put access in.
Can one contract cover all our sites?
Yes. We work across South East England and London, so sites at different addresses can be planned together as one programme. Every site has its own report.
In-house cleaning or a specialist?
A few tasks are always specialist work: entering ducts, working on fans, testing dampers and taking grease readings need training, the right equipment and safe access. That’s our job.
Keep a record of what your team does. A simple log of filter washes, wipe-downs and checks shows an inspector that the system is looked after between visits, alongside our reports.
How the job changes from site to site
Heating and cooling coils
Cooling coils stay damp in use, so dirt on them can turn sticky. We clean the coil and the tray beneath it together.
Drain trays
Older trays can corrode and start leaking. Their condition goes into the report with photos so repairs can be planned.
Fixed quotes for AHU cleaning in Hammer
Some jobs are bigger than they look, and some smaller. The main factors:
- Any permits to work or inductions
- Parking and loading at the site
- The size of the system
- The number of sites or systems
Several systems or sites on one quote often makes better use of the time. Mention every system or site you need covered and we’ll price it together.
Helping us quote
When you call or email, it’s useful to have:
- When the site is open and when it’s quiet
- Wide pictures of the system and the area around it
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- Problems your staff have spotted
Want a quote for AHU cleaning? Please call us on 0345 646 2711, or email photos with a few details about the site. We will talk you through the work and send you a fixed quote before you commit to anything.
What we do, step by step
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 we take it from there. Before we leave, the area is tidied and the paperwork follows. A few pictures of the system help us make the most of a visit to a place like Hammer.
- 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
- Mention any locked doors, roof access or ceiling voids
- Tell us the best time to work, such as after service or at a weekend
- Make sure someone can let us in and lock up afterwards
Get a fixed quote
Getting a quote doesn’t take long. Send a few details and pictures, and we normally reply with a fixed quote within one working day. If we need to see the system first, we book a survey around your hours.
Related advice
For landlords and multi-site operators
Managing agents often deal with us directly. Send the address, what’s needed and how access works, and we will send a fixed quote.
Landlords, managing agents and facilities managers book us, not only the businesses that use the systems. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we can quote for the whole system.
Common problems we fix in Hammer
Planned maintenance often covers belts, motors and filters but not cleaning. That means a unit can tick every service box and still be carrying years of dirt.
Common reasons sites call us are:
- Units needing a clean before a new tenant or handover
- Dirty fans and fan housings
- Stale or musty smells from the ventilation
- Air handling units never cleaned inside
Healthcare buildings such as Haslemere and District Hospital, about 2 miles east, depend on their ventilation; if you manage a surgery, clinic or care home near Hammer, yours matters too.
Questions to ask before booking
- Whether VAT is included
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- What paperwork you get at the end
- Whether the price is fixed