Surrey · Air handling unit cleaning
Air handling unit cleaning in Bishopsgate, Surrey
AHU cleaning in Bishopsgate from ventilation hygiene specialists trading since 2009. Evenings, overnight and weekends, plus a 24/7 emergency line.
- Blocked condensate drains and slimy trays
- Air handling units due a clean after building work
- Air handling units with blocked filters
Why deal with it now?
A slimy drain tray only gets worse. Left alone, it can overflow, leak into the plant area or ceiling below and spread smells through the system. Dealing with it early keeps the clean straightforward. It’s simpler to plan the work at Bishopsgate now than to arrange it in a hurry later.
Combining work into one visit or one programme often makes better use of the time. Tell us about everything you’d like looked at, and you’ll get one fixed quote.
Why Bishopsgate businesses choose us
- In business since 2009
- Out-of-hours work and a 24/7 emergency line
- Every job surveyed first
- Full insurance on every job
Take a look at how cleaning jobs are priced or how to check a contractor.
AHU cleaning for kitchens and businesses in Bishopsgate
An air handling unit is the heart of a building’s ventilation: air is pulled in, filtered, conditioned and sent out through the ducts. Whatever builds up inside it travels with that air, so cleaning the unit matters as much as cleaning the ducts. Common call-outs are for condensate trays that won’t empty and dust-coated heating and cooling coils, on supply and extract fans, dampers and louvres and heating and cooling coils.
Rural buildings with mechanical ventilation, such as care homes and country hotels, often keep their units in roof spaces or outbuildings, where filters and drain trays get forgotten.
A written report with photos follows every visit, so you have a record of what was done and when. Kitchen extract cleaning to TR19® Grease is certificated through the BESCA Vent Hygiene Elite portal.
- Place
- Bishopsgate (TW20)
- Region
- Surrey
- Paperwork
- Photo report after every visit
- Price
- A fixed quote up front
- Hours
- Out of hours as standard, 24/7 emergency line
- Call
- 0345 646 2711
- Last updated
- 30 October 2026
Keeping the system healthy
No system stays clean for ever, but care slows the build-up. Our tips:
- Look at the condensate drain whenever the unit is serviced
- Make sure the unit’s access doors open easily
- Keep filter changes on time and recorded
- Do not ignore odours coming through the grilles
Photos in the report cover the filters, coils, drain tray, fan and casing, along with anything we couldn’t reach. Any defects we noticed, like a leaking tray or damaged lining, are listed.
Change or clean filters on time. Overloaded filters let more dirt through to the coils and fan.
Places near Bishopsgate
Other services in Bishopsgate
How the job changes from site to site
Fans and fan sections
Build-up on fan blades can upset the balance and add wear. A clean fan runs more smoothly.
Drain trays
Condensate from the coil drips into a tray beneath it. We clear standing water, clean out slime and check the outlet is draining.
Landlords, agents and facilities managers
If you look after several sites, 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.
Managing agents often deal with us directly. Send the address, what’s needed and how access works and we will come back with a fixed quote.
When it’s something else
A few issues sit outside what this work can do:
- Ductwork downstream of the unit, which is a separate clean
- Faulty motors, drives or bearings
- Leaking heating or cooling coils
If you’re not sure, just ring 0345 646 2711 or use the quote form and we will give you a straight answer before you book.
Where we work
- Filter sections
- Heating and cooling coils
- Dampers and louvres
- Internal panels
- Drain trays
- Supply and extract fans
Your questions about AHU cleaning in Bishopsgate
Can you get to a site in Bishopsgate?
Yes, Bishopsgate is part of our area, however small the site. Just mention lanes, gates or anything else about the site when you book.
Can you come to Bishopsgate after we close?
Yes, nights and weekends are routine for us. Your customers, staff or residents in Bishopsgate needn’t be disturbed. Tell us your opening hours when you ask for a quote.
How long does an AHU clean take?
Cleaning takes one overnight shift for many single units, with bigger plant phased. Bigger units can be phased, and you can phone us on 0345 646 2711, or send details by email to plan it.
Do you repair air handling units?
Our AHU work is cleaning rather than mechanical repair. Any faults we notice are recorded for your maintenance team to follow up.
Are you fully insured?
Yes. We carry full insurance, and we have been trading since 2009.
What about areas you cannot get to?
They’re listed in the report, never skipped quietly. You’ll know exactly which parts weren’t reached and why, and we can quote to improve the access.
Do you offer maintenance contracts?
Yes. Scheduled maintenance plans are part of what we do, set at the interval the system needs. The report from each visit recommends the next date.
What should I send you?
Just the basics: the address, the site type, your opening hours and how we reach the system. Photos and any previous paperwork make it quicker. After that, simply call 0345 646 2711, or send details by email.
Bishopsgate buildings and their air
Food Standards Agency records list about 17 schools, colleges and universities and about 6 hospitals, care homes and childcare premises registered as food businesses in and around Bishopsgate, up to about a mile and a half out. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. About 22 miles out from central London, Bishopsgate is part of the South East area we work across. We work evenings, overnight and at weekends, so the visit fits around the site. Bishopsgate’s nearest hospital, King Edward VII Hospital, is about 2.7 miles north-west. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes.
Classrooms and halls at schools such as St John's Beaumont School are easiest to work in when pupils are away. Healthcare buildings such as King Edward VII Hospital, about 2.7 miles north-west, depend on their ventilation; if you manage a surgery, clinic or care home near Bishopsgate, yours matters too.
Bishopsgate is about 2 miles north-west of Egham, in Surrey. For AHU cleaning in and around Bishopsgate, please call 0345 646 2711 or drop us a line for a fixed quote. Our area covers London and the South East, Bishopsgate included. Across Surrey, we cover 395 places, and Bishopsgate is one of them. There’s also a page for Guildford, roughly 13 miles from Bishopsgate.
Every address in TW20 is covered for AHU cleaning, from the main roads to the quietest streets. If you need AHU cleaning at premises on Bishopsgate Road, Ridgemead Road and Wick Lane or anywhere close by, our technicians can take on the work. Neighbouring places we cover for AHU cleaning include Englefield Green (1 mile south-east), Egham Wick (1 mile south), Old Windsor (1 mile north), Wraysbury (2 miles north-east) and Egham (2 miles south-east). Within a short drive, we also cover Guildford (13 miles south), Woking (9 miles south), Camberley (10 miles south-west), Epsom (15 miles south-east), Ewell (15 miles south-east) and Walton-on-Thames (9 miles south-east).
What’s near Bishopsgate
We work in commercial kitchens and buildings around The Barley Mow Public House, Englefield Green Infant School and Nurseries and Windsor Great Park and the streets around them. The nearest railway station is Egham station, roughly 1.8 miles east of the centre. A little further out are Berkshire Yeomanry Museum (2.4 miles north-west) and Windsor Castle (3.2 miles north). Green spaces nearby include St Ann's Hill and Virginia Water Lake.
The process
There are three stages on the day: getting the area ready, doing the work and signing it off. Getting ready means protecting surfaces and switching off what needs to be off, and the sign-off is a written report with pictures. The middle part takes longest, which takes half a day to a full day per unit, with large plant planned over several shifts. Rural roads and tight entrances are worth telling us about before a visit to Bishopsgate.
- We agree a shutdown window that suits the building.
- Before cleaning, each section is photographed.
- We work through the unit from the intake to the outlet.
- The fan and drain tray are cleaned and the drain checked.
- After pictures are taken and the certificate issued.
Getting ready for the visit
- Mention any sign-in, permit or induction we need
- Clear the space around the work
- Tell us the best time to work, such as after service or at a weekend
Get a fixed quote
If you need AHU cleaning in Bishopsgate, call 0345 646 2711 or drop us a line. Tell us what kind of premises it is and when it’s open, plus photos or the previous report if they’re to hand. A fixed quote usually follows within one working day.
Related advice
How we price AHU cleaning
The price is fixed before any work begins. It takes into account:
- How big the system is
- The condition of the system
- A single visit or a regular plan
- How many systems or sites are involved
Kitchens, offices, schools and hospitals are all priced the same way: how much there is, how we reach it, what state it’s in and when we can work. Call for a fixed quote and we will go through it with you.
Asking for a quote
What to send for a quote:
- The postcode and the type of business
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- When the site is open and when it’s quiet
- Where the plant sits or the system leaves the building, such as a roof or outside wall
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, before any work starts.