Hertfordshire · Air handling unit cleaning
Sawbridgeworth AHU cleaning
AHU cleaning in Sawbridgeworth from ventilation hygiene specialists trading since 2009. Out-of-hours visits and 24/7 emergency callout.
- Leaves and litter drawn into the unit
- Coils clogged with dust and debris
- Plant that needs cleaning after a refit
Managing agents and facilities teams in Sawbridgeworth
Multi-site operators often want one contractor and one number. We cover South East England and London, so visits at different addresses can be planned together and kept on a regular cycle.
When the building owner and the occupier are different, the lease normally sets out who maintains what. We are happy to deal with either side, and the report can go to both.
How we handle AHU cleaning in Sawbridgeworth
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 pictures, so the report shows exactly what was done. The work covers internal panels, heating and cooling coils and filter sections, and people most often call us about dust built up on fan impellers and units that have only ever had filter changes.
Around a place like Sawbridgeworth, ventilation systems tend to be in schools, surgeries, care homes and workplaces. Smaller systems still gather dust and need inspecting.
Every visit ends with a written report and photos, so you have a record of what was done and when. Where the work is a TR19® Grease clean, the certificate is issued through the BESCA Vent Hygiene Elite portal.
- Where
- Sawbridgeworth (CM21, CM22)
- Wider area
- Hertfordshire
- Records
- Report and pictures after the visit
- Price
- A fixed price before work begins
- Working hours
- Overnight and weekend work, 24/7 emergency callout
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
How it works
Night work is normal for us. A lot of visits happen overnight or at weekends, so the site can open as normal afterwards. On site, the work takes half a day to a full day per unit, with large plant planned over several shifts. Visits to a place like Sawbridgeworth are planned ahead, so we arrive with what the survey says the job needs.
- First we agree when the unit can be switched off, including evenings or weekends.
- We take before pictures of each section of the unit.
- We work through the unit from the intake to the outlet.
- We finish with the fan section and the drain tray.
- We take after pictures and issue the certificate and report.
Preparing for the visit
- Tell us about site rules, permits or sign-in
- Agree a time when the area can be out of use
- Mention any locked doors, roof access or ceiling voids
Getting a quote
Getting a quote doesn’t take long. Send a few details and photos, and we normally reply with a fixed quote within one working day. Where a survey is needed, we arrange a time that suits the site.
Read more
Sawbridgeworth questions
Can you work in Sawbridgeworth outside opening hours?
Yes, nights and weekends are routine for us. It means the site in Sawbridgeworth keeps running as normal. Your opening times are the first thing we ask for.
Do you work in villages like Sawbridgeworth?
Yes. Villages and rural sites across the South East are part of our work, Sawbridgeworth included. Just mention lanes, gates or anything else about the site when you book.
What if parts of the system cannot be reached?
We never leave them off the paperwork. The report says which parts couldn’t be reached and why, and we can quote to improve the access.
What happens to the waste?
Anything we remove is contained as we work and taken away with us, from grease and debris to used cleaning water. None of it is left on site.
Do you clean the ductwork as well?
Yes. Ductwork is cleaned through access panels, and any sections we can’t reach are noted in the report, with new panels fitted where necessary.
Will we get paperwork for the AHU clean?
Yes, a TR19® certificate and a photo report. It includes a recommended date for the next check.
What is TR19?
TR19® is the BESA specification for keeping ventilation systems clean. TR19® Grease, a standalone specification since 2019, covers grease in kitchen extract systems, while TR19® Air covers other supply and extract ductwork.
Do you have a 24/7 line?
Yes. Our emergency line runs 24/7 for anything that can’t wait until a planned visit. Call us any time and explain what’s happened.
Towns and villages near Sawbridgeworth
Also in Sawbridgeworth
Signs you need AHU cleaning in Sawbridgeworth
Dirt in an AHU matters in two ways: air quality, since the unit feeds occupied rooms, and performance, since dirt makes it strain. For the people using the building every day, that’s the air they breathe for hours on end.
Signs it’s time to call us include:
- Dust-coated heating and cooling coils
- Dirty filters cutting the airflow
- Air handling units never cleaned inside
- Rooms that smell stuffy when the system runs
If you run an office near Sawbridgeworth station, its supply ductwork can gather dust for years before anyone looks inside.
Questions to ask before booking
- Whether a survey comes first
- Whether inaccessible sections are listed on the report
- Whether the price is fixed
- Proof of accreditation you can verify
AHU cleaning around Sawbridgeworth
The FSA’s food hygiene register lists about 6 schools, colleges and universities and about 8 care, childcare and hospital premises with registered kitchens or food service within 1.5 miles or so of the middle of Sawbridgeworth. Buildings like these often rely on mechanical ventilation, which TR19® Air covers. About 24 miles out from central London, Sawbridgeworth is part of the South East area we work across. A survey and a fixed quote come first, then the visit at a time that suits you. About 3.7 miles south-west of Sawbridgeworth is Princess Alexandra Hospital, the nearest hospital. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
For schools like Fawbert and Barnard Infants' School, the holidays are the usual time to inspect and clean ventilation. Healthcare buildings such as Princess Alexandra Hospital, about 3.7 miles south-west, depend on their ventilation; if you manage a surgery, clinic or care home near Sawbridgeworth, yours matters too.
Sawbridgeworth is about 3 miles north-east of Harlow, in Hertfordshire. Sawbridgeworth gets the same approach as every site we work on: diagnosis first, a fixed price, out-of-hours working where needed and a written report with pictures. Across Hertfordshire, we cover 381 places, Sawbridgeworth among them. We also work in Chelmsford, about 15 miles from Sawbridgeworth.
We cover every part of the CM21 and CM22 postcode area for AHU cleaning and the streets around it. Whether your site is on London Road, Station Road and Maylins Drive or anywhere close by, our technicians can take on the work. Being close to the A1184, Sawbridgeworth is simple for us to get to for AHU cleaning. If your site is just outside Sawbridgeworth, we cover Lower Sheering (1 mile east), High Wych (1 mile west), Sheering (2 miles east), Spellbrook (2 miles north) and Gaston Green (2 miles north-east). We also work in nearby towns such as 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).
Landmarks near Sawbridgeworth
We work in commercial kitchens and buildings around Leventhorpe, Gibberd Garden and White Lion Hotel. The nearest railway station is Sawbridgeworth station, about 0.7 miles north-east of the centre. Well-known places in the area include Harlow Mill (1.6 miles south-west) and Princess Alexandra Hospital (3.7 miles south-west). Green spaces nearby include Sawbridgeworth Marsh and Portingbury Hills.
What affects the cost of AHU cleaning
You will get a fixed price before any work starts. It takes into account:
- The condition of the system
- Working hours and out-of-hours timing
- Access, including roofs, risers and ceiling voids
- Travel, parking and unloading
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.
What to send for a quote
Many jobs can be priced from pictures and some basics. Useful things to send:
- Any previous report or certificate
- The site address and the type of premises
- Problems your staff have spotted
- Any access panels or hatches you can see
Every quote begins with a look at the system, either from pictures and details you send or from a site visit. Then we send a fixed price, before work begins.
Aftercare tips
Good habits slow the build-up between visits. A few tips:
- Check the drain tray is emptying during routine visits
- Keep inspection doors on the unit in good order
- Clear leaves and litter away from the intake
- Report musty smells from the vents right away
The ducts served by the unit may need attention too. Cleaning the unit and ducts together gives the best result, and we can survey both.
Make the drain tray part of every maintenance visit. A drain that is cleared early never gets to the slime stage.
What happens if it’s left?
If people in a building in Sawbridgeworth complain about stuffy or smelly air, the AHU is worth looking at. A clean tackles the source instead of masking it. A planned visit to Sawbridgeworth fits your hours; an emergency doesn’t.
You will not find a price list here, because each job is priced on what it involves. For a fixed quote, give us a ring on 0345 646 2711 or drop us a line, and we will talk you through it.
Why us?
- A single point of contact for sites across the South East and London
- Survey first, then a fixed quote
- In business since 2009
- Work around your opening hours, with 24/7 emergency cover
Read how cleaning jobs are priced and our accreditations and certificates.
Staff cleaning versus specialist work
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 is where we come in.
Logging matters as much as cleaning. A dated log of in-house cleaning and checks helps show that the system is managed between specialist visits, next to our reports.