Hertfordshire · Air handling unit cleaning
AHU Cleaning in Hinxworth
For cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Hinxworth, one call is all it takes: survey, fixed quote, work and sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.
- Intake sections clogged with outdoor debris
- Units needing a clean before a new tenant or handover
- Dirty coils holding back the airflow
AHU cleaning in Hinxworth
Our AHU cleaning covers sites in Hinxworth and the rest of Hertfordshire, in offices, schools, hospitals, care homes and retail. The work is timed around when the system can be switched off, including evenings, nights and weekends. The work covers heating and cooling coils, drain trays and dampers and louvres, and people most often call us about drain trays holding standing water and rooms that smell stuffy when the system runs.
Work in a small place like Hinxworth starts with agreeing access and timings.
Each visit ends with a written report and pictures, so there’s a dated record of the work. Kitchen extract cleaning to TR19® Grease is certificated through the BESCA Vent Hygiene Elite portal.
- Location
- Hinxworth (SG7)
- Region
- Hertfordshire
- Reporting
- Report and photos after the visit
- Quotes
- A fixed price before any work starts
- When we work
- When your site is closed, plus a 24/7 line
- Call
- 0345 646 2711
- Last updated
- 30 October 2026
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 won’t come clean, it’s best reported rather than tackled in-house. We will take a look and give you a fixed quote.
Logging matters as much as cleaning. A simple log of filter washes, wipe-downs and checks helps show that the system is managed between specialist visits, next to our reports.
How it works
The first job on site is protection: floors, worktops and anything near the work are covered. Then we make the system safe and start. The work on site takes half a day to a full day per unit, with large plant planned over several shifts, and we clear up before we go. We agree a date with you, plan the drive to Hinxworth and turn up when the site is quiet.
- We survey the unit from pictures or on site and agree what’s included.
- 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.
- Standing water and slime come out of the tray and the drain is checked.
- You get a TR19® certificate and a photo report.
How to prepare
- Name a contact who can let us in at the agreed time
- Have your last certificate or report to hand
- Plan for cooking equipment or plant to be off before we arrive
Get a fixed quote
Some systems can be priced from photos; others need a survey. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, the quote is fixed before any work is booked.
Related advice
Leave it or put it right?
Dirty coils and fans make the unit strain to move the same air. That means more wear on the motor and rooms that feel less fresh, and a planned clean is far less disruptive than a breakdown. It’s worth booking a check, because nobody sees inside a duct day to day.
We don’t list prices on the website, because each job is priced on what it involves. For a fixed quote, call 0345 646 2711 or email us, and we will talk you through it.
Why choose Duct Doctor in Hinxworth
- Photo reports with every job
- We diagnose before we treat
- Out-of-hours work and a 24/7 emergency line
- Full insurance on every job
See how cleaning jobs are priced and how to check a contractor.
Your questions about AHU cleaning in Hinxworth
Do you work overnight in Hinxworth?
Yes, evening, overnight and weekend work is normal for us. The site is handed back ready to open. When you give us a ring on 0345 646 2711, or send details by email, mention when the site is quiet.
Do you work in villages like Hinxworth?
Yes, we work in villages as well as towns, and Hinxworth is covered. Photos of the system and directions to the site help us plan the visit.
What is TR19?
A BESA specification in two main parts: TR19® Grease for kitchen extract systems and TR19® Air for general ventilation. It isn’t legislation, but it’s the standard people check against.
Are you accredited?
Our accreditations are CHAS, SafeContractor and ISO 9001, alongside BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. The Vent Hygiene Elite scheme is run by BESCA and audited independently.
What do you clean inside the unit?
Every section that collects dirt: filters, coils, tray, fan and panels. The survey confirms what’s in your unit before we quote.
Do you survey before quoting?
Yes. For many sites, photos and a few details are enough, while bigger or harder-to-see systems are surveyed on site.
Which kinds of sites do you work on?
We work for restaurants, pubs, hotels, schools, colleges, hospitals, care homes, offices and shops, plus food production and leisure sites.
How much does AHU cleaning cost?
The cost depends on the size of the system, its condition, access and timing. Ask us for a fixed quote and we will usually reply within one working day.
Looking after it afterwards
Aftercare is simple, and it helps at the next visit:
- Check the drain tray is emptying during routine visits
- Report water on the plant room floor
- Keep the area around the fresh air intake clear
- Make sure the unit’s access doors open easily
When we have closed the unit up, it can be restarted with your site team. Keep an eye on the condensate drain over the next few days to make sure it stays clear.
Make the drain tray part of every maintenance visit. A drain that’s cleared early never gets to the slime stage.
What we are called out for in Hinxworth
Mechanical servicing keeps a unit running, but it does not always include cleaning the inside. That means a unit can tick every service box and still be carrying years of dirt.
These are the problems we see most often:
- Stale or musty smells from the ventilation
- Dirty filters cutting the airflow
- Air handling units never cleaned inside
- Drain trays holding standing water
In Hinxworth, we look inside the system before deciding what needs cleaning.
What to look for in a quote
- What’s included in the scope, part by part
- What paperwork you get at the end
- Whether the figure could change on the day
- When the next visit should be, and why
Towns and villages near Hinxworth
More services for Hinxworth
AHU cleaning around Hinxworth
For Hinxworth, the closest hospital is Fairfield Hospital, roughly 3.9 miles south-west. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients. About 38 miles out from central London, Hinxworth is part of the South East area we work across. We work evenings, overnight and at weekends, so the visit fits around the site.
If you run a surgery, dental practice or care home near Hinxworth, clean ventilation matters as much to you as to a hospital like Fairfield Hospital (about 3.9 miles south-west).
Hinxworth is in Hertfordshire. Anywhere in SG7, we can carry out AHU cleaning at your premises. 381 places in Hertfordshire are on our list, large and small. Our Milton Keynes page covers sites nearby, about 24 miles away.
We work across SG7 for AHU cleaning and the streets around it. If you need AHU cleaning at premises on High Street, Homefield and Chapel Street or anywhere close by, we can help. Neighbouring places we cover for AHU cleaning include Bury End (1 mile south-east), Ashwell End (1 mile east), Caldecote (1 mile south), Newnham (2 miles south) and Ashwell (2 miles east). Within a short drive, we also cover Stevenage (10 miles south), Hitchin (8 miles south-west), Letchworth (5 miles south), Letchworth Garden City (5 miles south), Stotfold (3 miles south-west) and Baldock (4 miles south).
What’s near Hinxworth
For rail, the closest station is Arlesey station, roughly 3.3 miles south-west. A little further out are Fairfield Hospital (3.9 miles south-west) and Ashwell Village Museum (2 miles east). Green spaces nearby include Arlesey Old Moat and Glebe Meadows.
What the work involves, part by part
Rooftop and plant room units
Many AHUs sit on roofs or in plant rooms with limited access. Access is planned during the survey so the quote reflects it.
Fans and fan sections
The fan moves all of the unit’s air, so dirt on it gets spread around. The impeller, its housing and the fan chamber are cleaned.
When something else is needed
To be straight with you, some problems need a different fix:
- Ductwork downstream of the unit, which is a separate clean
- Building management system faults
- Damaged coils beyond cleaning
If in doubt, call 0345 646 2711 or send us an email and we’ll say what we think before you book.
What we work on in Hinxworth
- Heating and cooling coils
- Internal panels
- Dampers and louvres
- Filter sections
- Supply and extract fans
- Drain trays