Hertfordshire · Air handling unit cleaning
Air handling unit cleaning in Throcking, Hertfordshire
Looking for AHU cleaning in Throcking? We diagnose first, fix the price and book the work around your hours, then sign off with a report and photos.
- Stale or musty smells from the ventilation
- Fan sections that haven’t been cleaned in years
- Plant that needs cleaning after a refit
AHU cleaning for kitchens and businesses in Throcking
Our AHU cleans for sites in Throcking cover the parts that collect dirt: the filter section, heating and cooling coils, drain trays, fan and casing. Every clean comes with a TR19® certificate and before and after photos in a report. Common call-outs are for odours coming through the supply air and plant that has been serviced but not cleaned, on filter sections, dampers and louvres and internal panels.
Somewhere as small as Throcking, ducted ventilation is typically limited to a school, a care home, a surgery or a converted business building, wherever there is one, but where it’s fitted, it needs the same inspection and cleaning as anywhere.
Good records are part of the job. You get a written report with pictures after every visit, listing what was done, anything we couldn’t reach and when the next visit is due. File it in your maintenance log so it’s ready for an insurer, fire officer or EHO.
- Where
- Throcking (SG9)
- Region
- Hertfordshire
- Paperwork
- Written report with photos
- Quotes
- A fixed quote up front
- Working hours
- Overnight and weekend work, 24/7 emergency callout
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
What affects the quote in Throcking
There’s no set price list, because no two systems are the same. What we look at:
- Whether several sites go on one quote
- The scale of the work
- Where the site is and how we reach it
- Site rules, permits and inductions
Working hours, access and the scale of the site all affect the cost. Each of those is built into the quote and give you a fixed price before we start.
What to send for a quote
The more you tell us, the more accurate the quote. When you get in touch, it helps to send:
- A few general shots of the system
- The roof, plant room or outside wall the system runs to
- The paperwork from the last visit, if you have it
- Close-ups of filters, grilles, hatches or access panels
There’s no standard price list, because no two systems are the same. Instead, we look at your site first, from photos or a survey, and then give you a fixed quote. To get going, ring 0345 646 2711 or send us an email.
More services for Throcking
Your questions about AHU cleaning in Throcking
Do you cover smaller places like Throcking?
Yes. Villages and rural sites across the South East are part of our work, Throcking included. The journey is planned ahead, so a few details about the route help.
Can you come to Throcking after we close?
Yes, out-of-hours work is a big part of what we do. Your customers, staff or residents in Throcking needn’t be disturbed. Your opening times are the first thing we ask for.
How do you keep the site clean during the work?
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.
Do you have a 24/7 line?
Yes, 24/7. Office hours are Monday to Friday, 8am to 6pm, with the emergency line covering every other hour.
How far ahead should we book?
For planned work, earlier is better, especially if the next clean or test is due soon. Emergencies are different, because our line is open 24/7.
Are you insured?
Yes, we’re fully insured. We also hold CHAS and SafeContractor for clients who vet their contractors.
Do you look at the system first?
Yes. For many sites, photos and a few details are enough, and larger or hidden systems get a visit.
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.
Part by part
Filters
Clogged filters reduce airflow, and dirt can get round the edges. We clean the frames and rails so the filters sit tight.
Drain trays
Older trays can corrode and start leaking. Their condition goes into the report with pictures so you can decide on any repairs.
Between visits
Here’s the after-treatment advice, in brief:
- Make sure condensate is draining away
- Report stiff or damaged access doors
- Keep filter changes on time and recorded
- Report musty smells from the vents right away
Photos in the report cover the filters, coils, drain tray, fan and casing, along with anything we couldn’t reach. It also notes faults we spotted, such as damaged panels or a blocked drain.
Keep the area around the intake clear. What’s near the intake ends up in the unit.
AHU cleaning around Throcking
About 31 miles out from central London, Throcking is part of the South East area we work across. We work evenings, overnight and at weekends, so the visit fits around the site.
For schools like Freman College, the holidays are the usual time to inspect and clean ventilation. Ventilation work in and around Throcking is risk-based: inspect, then clean what needs it.
Throcking is about 6 miles north-east of Stevenage, in Hertfordshire. Throcking 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. Across Hertfordshire, we cover 381 places, Throcking among them. For sites nearby, see our Chelmsford page (28 miles or so).
Postcode districts we cover here for AHU cleaning: SG9. If your site is just outside Throcking, we cover Cottered (1 mile south-west), Chipping (1 mile north-east), Buntingford (2 miles east), Aspenden (2 miles south-east) and Layston (2 miles east). Further out, we also cover Stevenage (6 miles south-west), Bishop's Stortford (11 miles south-east), Welwyn Garden City (12 miles south-west), Hitchin (9 miles west), Hoddesdon (14 miles south) and Hatfield (15 miles south-west).
Around Throcking
Nearby you’ll also find Clothall Castle (4.1 miles west). Not far away are Hawkins Wood.
What your team can do, and what needs us
When your team notices a problem between visits, like drips, unusual noise, smells or damaged filters, they should report it rather than try to fix it. We will take a look and give you a fixed quote.
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.
When it’s something else
Not every problem is solved by AHU cleaning, and we’ll tell you before any work starts. It does not solve:
- Ductwork downstream of the unit, which is a separate clean
- Problems with the unit’s controls or sensors
- Faulty motors, drives or bearings
Not sure which it is? You can call 0345 646 2711, or send details by email and we’ll tell you honestly before you book.
What we work on in Throcking
- Supply and extract fans
- Filter sections
- Dampers and louvres
- Heating and cooling coils
- Internal panels
- Drain trays
Multi-site and managed buildings
When the building owner and the occupier are different, the lease normally sets out who maintains what. We can quote either party and send the paperwork to whoever needs it.
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’re happy to quote for all of it.
How it works
We start by comparing what we find with the survey or your pictures. Anything unexpected is raised with you before we go further. From there, it takes anything from half a day for one small unit to several shifts for a plant room full of them. If the van will struggle with a lane or gateway near Throcking, let us know and we’ll plan around it.
- We start with a survey of the unit and a fixed quote for the work.
- We arrange the shutdown with your staff and sheet the area.
- We clean or change the filters as agreed, then clean the coils, fan and internal panels.
- We clean out the drain tray and make sure it drains.
- You get a TR19® certificate and a photo report.
Before we arrive
- Have your last certificate or report to hand
- Clear loose items from the work area
- Make sure equipment near the work can be switched off and left to cool
How to get a quote
If you need AHU cleaning in Throcking, ring 0345 646 2711 or drop us a line. Tell us what kind of premises it is and when it’s open, and send photos or your last report if you can. A fixed quote usually follows within one working day.