Hertfordshire · Air handling unit cleaning
AHU Cleaning in Lower Sheering
Professional AHU cleaning in and around Lower Sheering, booked around your opening hours and signed off in writing with pictures.
- Blocked condensate drains and slimy trays
- Intake sections clogged with outdoor debris
- Dirty fans and fan housings
When it’s something else
We will always give you a straight diagnosis, so here’s what AHU cleaning will not do:
- Dirty ducts beyond the unit itself
- Leaking heating or cooling coils
- Breakdowns that need a mechanical engineer
Not sure which it is? You can give us a ring on 0345 646 2711 or send us an email and we’ll tell you honestly.
Parts of the system we cover
- Internal panels
- Dampers and louvres
- Heating and cooling coils
- Drain trays
- Filter sections
- Supply and extract fans
How we handle AHU cleaning in Lower Sheering
We clean air handling units for buildings in Lower Sheering and across Hertfordshire, working to TR19® Air, in buildings such as offices, schools, healthcare sites and shops. The work is timed around when the system can be switched off, including evenings, nights and weekends. The work covers heating and cooling coils, dampers and louvres and internal panels, and people most often call us about plant that needs cleaning after a refit and dirty fans and fan housings.
For a building in or near Lower Sheering, access is agreed in advance and the visit is planned around the journey, and the ventilation is inspected, cleaned and recorded the same as anywhere.
The report is your system’s health record: a dated account with pictures of everything we did. Grease extract cleans are also certificated to TR19® Grease through the BESCA VHE portal, ready for your insurer.
- Place
- Lower Sheering (CM21, CM22)
- Region
- Hertfordshire
- Records
- Written report with pictures
- Price
- A fixed quote up front
- When we work
- Evenings, overnight and weekends; 24/7 emergencies
- Phone
- 0345 646 2711
- Page updated
- 30 October 2026
What we do, step by step
A visit follows the same order every time: sheeting and protection first, isolate whatever needs isolating, carry out the AHU cleaning, clear away and hand over the paperwork. The visit itself takes half a day to a full day per unit, with large plant planned over several shifts. A quick note on how to find the site and where to park makes a visit to Lower Sheering run smoothly.
- We survey the unit from photos or on site and agree what’s included.
- With your site team, the unit is switched off and isolated, then the area around it protected.
- Filters, coils, fan section and casing are cleaned in turn.
- Drain trays are cleared and cleaned and the outlet checked.
- A TR19® certificate and photo report follow the clean.
Getting ready for the visit
- Let us know when the site is closed or quiet
- Clear loose items from the work area
- Let us know how we reach the system, including roofs, risers and plant rooms
Getting a quote
Photos are enough for some jobs, while others need a look on site. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, you get a fixed price before we start.
Read more
For landlords and multi-site operators
Whether it’s one building or many, you get the same standard: a survey first, a fixed quote, the work timed around the site and a report with pictures.
Facilities teams in offices, schools and healthcare sites book us too in Lower Sheering and across Hertfordshire. Larger estates can be phased building by building to keep disruption down.
What AHU cleaning looks like in Lower Sheering
The FSA’s food hygiene register lists about 6 schools, colleges and universities and about 8 hospitals, care homes and childcare premises with registered kitchens or food service within roughly a mile and a half of the centre of Lower Sheering. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. Lower Sheering is about 24 miles from central London, well within the area we cover across London and the South East. The visit is fixed around your opening hours, not ours. Herts and Essex Hospital is the nearest hospital, about 4 miles north of Lower Sheering. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
If you run an office near Sawbridgeworth station, its supply ductwork can gather dust for years before anyone looks inside. Healthcare ventilation, from large hospitals like Herts and Essex Hospital (about 4 miles north) to small clinics, depends on clean filters, coils and ducts. If you manage a school such as Fawbert and Barnard Infants' School, ventilation cleaning is best booked for the holidays.
Lower Sheering is about 3 miles north-east of Harlow, in Hertfordshire. Whatever kind of site you run in Lower Sheering, AHU cleaning is something we can help with. Visits can be booked for evenings, overnight or weekends so the site keeps running. Lower Sheering is one of 381 places in Hertfordshire we cover for AHU cleaning. For sites nearby, see our Chelmsford page, about 15 miles away.
All of CM21 and CM22 is covered for AHU cleaning, from busy streets to back roads. Whether your site is on Back Lane, Vantorts Road and Forebury Avenue or a nearby road, we can help. If your site is just outside Lower Sheering, we cover Sawbridgeworth (1 mile west), Sheering (1 mile east), High Wych (2 miles west), Gaston Green (2 miles north) and Spellbrook (2 miles north). Within a short drive, we also cover Bishop's Stortford (4 miles north), Welwyn Garden City (15 miles west), Hoddesdon (8 miles south-west), Cheshunt (11 miles south-west), Hertford (10 miles west) and Ware (8 miles west).
Near you in Lower Sheering
We work in commercial kitchens and buildings around Leventhorpe, Gibberd Garden and King William IV Public House, among other places. Lower Sheering has its own railway station: Sawbridgeworth station. A little further out are Harlow Mill (1.9 miles south-west) and Mark Hall Cycle Museum (2.6 miles south-west). Open spaces near Lower Sheering include Portingbury Hills and Sawbridgeworth Marsh.
Nearby places to Lower Sheering
Also in Lower Sheering
Why it’s worth doing now in Lower Sheering
Cleaning a unit while it only has light dust is quick. Years of build-up make the job longer and harder, especially where there’s been moisture. Somewhere as small as Lower Sheering, losing a kitchen or building to a fault is felt by everyone who uses it.
One small site or a whole estate, we price it on the same basis: what needs doing, how we get to it and when. You will have a fixed price before we start.
Why us?
- Out-of-hours work and a 24/7 emergency line
- Accredited under CHAS and SafeContractor, with ISO 9001
- Fixed quotes, typically within one working day
- Trading since 2009
Read our cost guide and our accreditations.
FAQs for Lower Sheering
Is Lower Sheering within the area you cover?
Yes. Lower Sheering is within the area we cover across London and the South East. Photos of the system and directions to the site help us plan the visit.
Do you do school ventilation cleaning in Lower Sheering in the summer holidays?
Yes. Half-terms and the summer break are the natural time for school work. With about 6 schools and colleges on the FSA’s register within roughly a mile and a half of Lower Sheering, it pays to plan holiday dates ahead. Booking early in the term gives the best choice of holiday dates.
How much does AHU cleaning cost?
Size, condition, access and working hours all affect the cost. Call for a fixed quote and we’ll usually reply within one working day.
Are you accredited?
We hold CHAS, SafeContractor and ISO 9001, alongside BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. Vent Hygiene Elite is run by BESCA and independently audited.
How much notice should we give?
It depends on the time you need and how big the job is. Mention your preferred dates with your enquiry, and if it’s an emergency, call us any time.
How do you keep the site clean during the work?
We start with protection: sheeting over floors, worktops and anything close to the work. We tidy up and take our waste away before we leave.
Is there a report after cleaning?
Yes, both a certificate and a report with pictures. It includes a recommended date for the next check.
What do you do with what you remove?
Waste is contained during the work and removed when we leave, from grease and debris to used cleaning water. We don’t leave it behind.
Different parts, different methods
Internal casing and panels
Access doors and panels are opened in turn and closed properly afterwards, and check every one is shut.
Rooftop and plant room units
Ceiling-mounted and compact units are cleaned too. We protect the area below before opening them.
Aftercare tips
After the visit, a few habits help the work last:
- Check the drain tray is emptying during routine visits
- Change filters on schedule and log each change
- Report stiff or damaged access doors
- Report musty smells from the vents straight away
The report suggests a date for the next inspection or clean, taking into account how dirty it was. TR19® Air is risk-based, so the interval depends on the unit and how the building is used.
Regular inspection under TR19® Air shows when cleaning is due, rather than waiting for a problem.
Fixed quotes for AHU cleaning in Lower Sheering
The survey tells us what the work involves. We look at:
- Working hours and out-of-hours timing
- What state the system is in
- Any permits to work or inductions
- One-off work versus a regular cycle
Every site is different, so each one gets its own fixed quote. The size of the job, how we reach it, its condition and the working hours all play a part.
What to send for a quote
Before you ask for a quote, gather:
- Detail shots of panels, filters and grilles
- The times we could work without disrupting the site
- The paperwork from the last visit, if you have it
- Where the plant sits or the system leaves the building, such as a roof or outside wall
Getting a quote doesn’t take long. Call or email with a few details and you will typically have a fixed price within one working day. If we need to see the system first, we book a survey around your hours.