Hertfordshire · Air handling unit cleaning
Air handling unit cleaning in Barwick, Hertfordshire
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces for businesses, landlords and public buildings in Barwick. CHAS, SafeContractor and ISO 9001, and fully insured.
- Debris and leaves in the fresh air intake
- Plant that has been serviced but not cleaned
- Dirty fans and fan housings
AHU cleaning in Barwick
We clean the parts of the unit where dirt and moisture gather: the filter section, heating and cooling coils, drain trays, fan and casing. Every clean comes with a TR19® certificate and before and after pictures in a report. The work covers supply and extract fans, heating and cooling coils and drain trays, and the jobs we see most are condensate trays that won’t empty and dust-coated heating and cooling coils.
In rural areas, ventilation units are often in roof voids or outbuildings, where filters and drain trays get forgotten.
The paperwork matters as much as the work. Each visit is written up with photos, listing what was done, anything we couldn’t reach and when the next visit is due. Keep it with your fire safety records so it’s ready for an insurer, fire officer or EHO.
- Place
- Barwick (SG11)
- Region
- Hertfordshire
- Paperwork
- Report and pictures after the visit
- Quotes
- A fixed quote up front
- When we work
- When your site is closed, plus a 24/7 line
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
What happens on the day
We are used to working while the site is closed. Evenings, nights and weekends are when much of our work happens, so a kitchen or building can carry on as usual the next day. The visit itself takes one overnight shift for many single units, with bigger plant phased. A quick note on how to find the site and where to park makes a visit to Barwick run smoothly.
- First we agree when the unit can be switched off, including evenings or weekends.
- We take before pictures of each section of the unit.
- Filters, coils and internal surfaces are cleaned from intake to discharge.
- We finish with the fan section and the drain tray.
- We take after pictures and issue the certificate and report.
Preparing for the visit
- Plan for cooking equipment or plant to be off before we arrive
- Make sure someone can let us in and lock up afterwards
- Tell us where we can park and unload
How to get a quote
There’s no standard price list, because no two systems are the same. Instead, we look at your site first, from pictures or a survey, and then send you a fixed quote. To start, call us on 0345 646 2711, or email photos.
Related advice
When to call us in Barwick
Dirt in an AHU matters in two ways: air quality, since the unit feeds occupied rooms, and performance, since dirt makes it strain. For anyone working, learning or staying in a building in Barwick, that’s air they breathe for hours at a time.
Most sites get in touch when they notice something like this:
- Air handling units due a clean after building work
- Dirty filters cutting the airflow
- Dirty coils holding back the airflow
- Stale or musty smells from the ventilation
Healthcare buildings such as Hertford County Hospital, about 5.8 miles south-west, depend on their ventilation; if you manage a surgery, clinic or care home near Barwick, yours matters too.
Questions to ask before booking
- Whether the price is fixed
- Exactly which parts of the system are covered
- How VAT is shown on the quote
- Whether the work can be done while the site is closed
When something else is needed
An honest diagnosis matters more to us than a booking, so here’s what AHU cleaning will not do:
- Controls and BMS settings that run the unit
- Mechanical faults with motors, belts or bearings
- Coils that are corroded or leaking and need replacing
If you’re not sure, just call us on 0345 646 2711 or use the quote form and we will give you a straight answer.
What we work on in Barwick
- Supply and extract fans
- Heating and cooling coils
- Dampers and louvres
- Filter sections
- Drain trays
- Internal panels
Different parts, different methods
Drain trays
Standing water in a tray sits right where the air passes. We clean it and note if the slope or the drain needs attention.
Heating and cooling coils
Heating and cooling coils have tightly packed fins that trap fine dust. We clean them with care so the fins are not damaged.
Managing agents and facilities teams in Barwick
Keeping records across a portfolio is half the battle. Each visit ends with a dated report and pictures, ready to show insurers, fire officers or EHOs.
The Fire Safety Order 2005 puts the duty to manage fire risk on the responsible person, which may be the employer, owner, landlord, FM or managing agent. Where responsibility is shared, records matter even more.
Ventilation in Barwick buildings
We cover Barwick, about 25 miles from central London, as part of our work across London and the South East. Visits are booked around your hours, evenings and weekends included. The nearest hospital to Barwick is Hertford County Hospital, about 5.8 miles south-west. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes.
An inspection comes first for any ventilation job around Barwick, so the cleaning matches what’s there.
Barwick is about 3 miles north-east of Ware, in Hertfordshire. We carry out AHU cleaning for businesses, landlords and public buildings in Barwick and the rest of Hertfordshire. Our area takes in 381 places across Hertfordshire, large and small. There’s also a page for Chelmsford, about 22 miles away.
Every address in SG11 is within our area for AHU cleaning, from busy streets to back roads. Other places close to Barwick include Colliers End (1 mile north-west), High Cross (1 mile south-west), Standon Green End (2 miles west), Cold Christmas (2 miles south) and Wadesmill (2 miles south-west). Within a short drive, we also cover Stevenage (9 miles north-west), Bishop's Stortford (6 miles east), Welwyn Garden City (9 miles south-west), Harpenden (15 miles west), Hitchin (14 miles north-west) and Hoddesdon (7 miles south).
Near you in Barwick
For rail, the closest station is Ware station, about 3.7 miles south-west. A little further out are Hertford County Hospital (5.8 miles south-west) and Barrowfield (4.5 miles south-west). Green spaces nearby include King's Meads.
Places near Barwick
What else we do in Barwick
Staff cleaning versus specialist work
When your team notices a problem between visits, such as dripping grease, a noisy fan, a smell or a filter that will not come clean, they should report it rather than try to fix it. We will take a look and give you a fixed quote.
Keep a record of what your team does. A dated log of in-house cleaning and checks helps show that the system is managed between specialist visits, alongside our reports.
Aftercare tips
To keep the system working properly between visits:
- Diary the inspection date recommended in the report
- Report stiff or damaged access doors
- File each AHU report in the maintenance log
- Don’t ignore odours coming through the grilles
The report suggests a date for the next inspection or clean, taking into account how dirty it was. Under TR19® Air the timing is set by inspection and risk, not a fixed calendar.
Have the unit inspected regularly, in line with the risk-based approach of TR19® Air, rather than waiting for a problem.
Your questions about AHU cleaning in Barwick
Is AHU cleaning available in Barwick?
Yes. We work across London and the South East, and Barwick is part of that. Just call 0345 646 2711 or send us an email with a few details of the site.
Will you come out to Barwick?
Yes, smaller places are covered as well as towns. Photos of the system and directions to the site help us plan the visit.
Is a quote from photos possible?
Yes, for many jobs. Send a few wide photos plus close-ups of panels, filters or grilles, and we normally come back within one working day. Some sites still need a visit, and we’ll say so.
How much does AHU cleaning cost?
Every site is different, so each gets its own fixed quote. To get one, call us on 0345 646 2711 or use the quote form and tell us about the site and its opening hours.
What if parts of the system cannot be reached?
They’re listed in the report, never skipped quietly. You will know exactly which parts weren’t reached and why, along with a quote to put access in.
Can you clean the ducts connected to the AHU?
Yes, the ductwork, grilles and diffusers the unit serves. We’ll tell you after the survey whether the ducts need it.
Is there a survey before the work?
Yes. Photos often do the job, while bigger or harder-to-see systems are surveyed on site.
Do you offer emergency callouts?
Yes, any time. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line and we’ll talk you through the next steps.