Surrey · Air handling unit cleaning
St John's AHU cleaning
Our technicians work in St John's on AHU cleaning. Fixed quotes, work around your opening hours and photo reports on every job.
- Air handling units with blocked filters
- Plant that needs cleaning after a refit
- Dust built up on fan impellers
About our AHU cleaning in St John's
An AHU clean is a thorough examination and treatment of the unit. We look inside each section, clean what we find and record it with photos, so the report shows exactly what was done. If you have dust built up on fan impellers and dirty filters cutting the airflow, we can help, from internal panels, supply and extract fans and dampers and louvres onwards.
Smaller buildings around St John's often keep their ventilation units in a roof void or plant cupboard, out of sight and easy to overlook. Filters, coils and drain trays need attention whatever the size of the unit.
Good records are part of the job. You get a written report with pictures after every visit, covering the work done, any areas we couldn’t access and a recommended next date. Keep it with your fire safety records so it’s to hand when an insurer or inspector asks.
- Place
- St John's (GU21, GU22)
- Wider area
- Surrey
- Records
- Photo report after each visit
- Quotes
- A fixed price before any work starts
- Working hours
- When your site is closed, plus a 24/7 line
- Telephone
- 0345 646 2711
- Page updated
- 30 October 2026
How the job changes from site to site
Drain trays
A tray that does not drain becomes a pool of stagnant water in the airstream. We clean it and report anything about the tray or drain that needs fixing.
Filters
What’s on the filters is a good clue to what’s further in. They’re photographed before and after for your records.
Landlords, agents and facilities managers
Records are where multi-site compliance often slips. Every visit ends with a dated report and photos, so you can show an insurer or inspector what was done at each site.
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 can quote for the whole system.
Nearby places to St John's
Other services in St John's
The process
Everything the job needs comes with us, from protective sheeting to tools and access equipment. You only need to give us clear access and switch off what needs to be off. The visit takes anything from half a day for one small unit to several shifts for a plant room full of them. In a smaller place like St John's, parking is rarely the issue, but tell us about gates, roof access and opening hours.
- We start with a survey of the unit and a fixed quote for the work.
- The unit is shut down with your site team and the area protected.
- We clean or change the filters as agreed, then clean the coils, fan and internal panels.
- Standing water and slime come out of the tray and the drain is checked.
- A TR19® certificate and photo report follow the clean.
Preparing for the visit
- Let us know how we reach the system, including roofs, risers and plant rooms
- Plan for cooking equipment or plant to be off before we arrive
- Let us know about permits to work or site inductions
Ask for a quote
Every quote begins with a look at the system, from your pictures and details or, where that isn’t enough, a survey on site. Then we send a fixed price so you know the cost before work begins.
Advice
What staff can safely do
Your own staff can handle the daily basics: wiping down canopy surfaces, cleaning filters and keeping a simple log. Inside the ducts, risers and fan is specialist work, and that’s where we come in.
Away from the kitchen, the in-house job is mainly checking: clear grilles, a log of filter changes and reporting anything odd. The inside of ducts and units needs a specialist.
Why it’s worth doing now in St John's
When the unit is clean, less dirt reaches the ducts, so the ducts and grilles stay cleaner between cleans. It also means the next inspection has less to find. A planned visit to St John's fits your hours; an emergency doesn’t.
We do not list prices on the website, because each job is priced on what it involves. Call for a fixed quote, and we’ll explain what it covers.
Why us?
- A written report with photos after each visit
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- A single point of contact for sites across the South East and London
- CHAS, SafeContractor and ISO 9001
Take a look at our cost guide or our accreditations.
What AHU cleaning cannot fix
We will not sell you work that does not address the problem, so here are the limits:
- Airflow problems caused by the system’s design
- Ductwork downstream of the unit, which is a separate clean
- Damaged coils beyond cleaning
If in doubt, ring 0345 646 2711 or drop us a line and we will say what we think before you book.
Parts of the system we cover
- Heating and cooling coils
- Internal panels
- Filter sections
- Supply and extract fans
- Dampers and louvres
- Drain trays
What AHU cleaning looks like in St John's
Going by the FSA’s register, there are about 11 schools, colleges and universities and about 10 care, childcare and hospital premises serving food across St John's and its immediate surroundings (about a mile and a half). Busy, occupied buildings like these are where clean supply air matters most. St John's, about 25 miles from central London, is within our usual area. Evening, overnight and weekend visits are all possible. The nearest hospital to St John's is Brookwood Hospital, about 1 mile west. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
School buildings such as The Winston Churchill School A Specialist Sports College are usually done in the holidays, so classrooms aren’t disturbed. Healthcare ventilation, from large hospitals like Brookwood Hospital (about 1 mile west) to small clinics, depends on clean filters, coils and ducts.
St John's is about 1 mile west of Woking, in Surrey. Whatever kind of site you run in St John's, AHU cleaning is something we can help with. Visits can be booked for evenings, overnight or weekends so the site keeps running. 395 places in Surrey are on our list, large and small.
We work across the GU21 and GU22 postcode area for AHU cleaning and the streets around it. That includes premises on Pond Road, Copse Road and Raglan Road and nearby roads. Being close to the A324, St John's is simple for us to get to at any hour. We also cover Goldsworth Park (1 mile north-east), Woking (1 mile east), Westfield (2 miles south-east), Horsell (2 miles north-east) and Mimbridge (2 miles north). We also work in nearby towns such as Guildford (5 miles south), Camberley (6 miles west), Epsom (14 miles east), Farnham (11 miles south-west), Ewell (15 miles east) and Egham (8 miles north).
Near you in St John's
Typical jobs here are in premises near Hoe Valley School, The Oaktree School and Royal Oak pub and the streets around them. The closest station to St John's is Woking station, roughly 1.6 miles east of the centre. A little further out are Brookwood Hospital (1 mile west) and The Peacocks (1.6 miles east). Green spaces nearby include Brookwood Lye.
FAQs for St John's
Can a school’s ventilation in St John's be done out of term time?
Yes, and it’s the easiest time to do it. Around St John's, the Food Standards Agency lists about 11 schools and colleges with registered kitchens within a mile and a half or so. Send us your term dates when you call us on 0345 646 2711, or email photos, and we will fit the work in.
Do you work at weekends in St John's?
Yes. We work evenings, overnight and at weekends. Your customers, staff or residents in St John's needn’t be disturbed. Your opening times are the first thing we ask for.
What do you do with what you remove?
We take it away when we go. During the work, it’s contained so the area stays clean.
Are you accredited?
We are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we’re fully insured.
Are you fully insured?
Yes. We carry full insurance and have been trading since 2009.
What is TR19?
A BESA 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.
Can you look after several sites?
Yes. Tell us the addresses and what each needs and we will quote them together.
Do you cover St John's?
Yes. Our area takes in London and the counties of South East England, and that includes St John's.
How we price AHU cleaning
Your quote is based on your site. We take into account:
- One-off work versus a regular cycle
- The number of sites or systems
- Whether we need access equipment or extra panels
- Travel, parking and unloading
A single site or a whole portfolio, the quote is built the same way: the work involved, the access and the timing. You will have a fixed price before any work starts.
What we need to know
What to send for a quote:
- Any access panels or hatches you can see
- The postcode and the type of business
- Any symptoms, from odd noises to smells or leaks
- Your last certificate, test record or report
Need a price for AHU cleaning? Please give us a ring on 0345 646 2711, or email photos and tell us about the site. We’ll explain what we’d do and send a fixed quote before you commit to anything.