Hertfordshire · Air handling unit cleaning
Air handling unit cleaning in Radwell, Hertfordshire
One call covers AHU cleaning in Radwell, from survey to sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Stale or musty smells from the ventilation
- Debris and leaves in the fresh air intake
- Dirty filters cutting the airflow
AHU cleaning for kitchens and businesses in Radwell
Think of an AHU clean as a full check-up for the ventilation. We look inside each section, clean what we find and record it with pictures, so you can see the unit’s condition for yourself. The work covers supply and extract fans, drain trays and dampers and louvres, and the jobs we see most are rooms that smell stuffy when the system runs and dust built up on fan impellers.
Work in a small place like Radwell starts with agreeing access and timings, and the ventilation is inspected, cleaned and recorded the same as anywhere.
Insurers, fire officers and environmental health officers all look at records. So every job comes with a written report and pictures, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Location
- Radwell (SG7)
- Wider area
- Hertfordshire
- Paperwork
- Photo report after each visit
- Quote
- A fixed quote up front
- When we work
- Evenings, overnight and weekends; 24/7 emergencies
- Call
- 0345 646 2711
- Checked
- 30 October 2026
How we price AHU cleaning
Your quote is based on your site. We consider:
- The size of the system
- A single visit or a regular plan
- The condition of the system
- Whether several sites go on one quote
No two sites are the same, so we price each one individually. The size of the job, how we reach it, its condition and the working hours all play a part.
What we need to know
To speed up the quote, send us:
- Your last certificate, test record or report
- Close-ups of filters, grilles, hatches or access panels
- The times we could work without disrupting the site
- The site address and the type of premises
Quoting starts with a diagnosis, from your pictures and details or, where that is not enough, a survey on site. Then we send a fixed price so you know the cost before we start.
What we do, step by step
On the day, we arrive at the time agreed with you, which is often after service, overnight or at a weekend. Anything that needs to be off for the work is switched off and left to cool before any work starts, and the area around the work is covered and protected. The work itself takes from a few hours for a compact unit to a day or more for a large one. For a village or hamlet like Radwell, tell us about narrow lanes, gates and parking when you book.
- First we agree when the unit can be switched off, including evenings or weekends.
- Before cleaning, each section is photographed.
- Filters, coils and internal surfaces are cleaned from intake to discharge.
- We finish with the fan section and the drain tray.
- After pictures are taken and the certificate issued.
Before we arrive
- Dig out any earlier paperwork for the system
- Allow time for equipment near the work to be turned off and cool down
- Make sure someone can let us in and lock up afterwards
Get a fixed quote
Quotes are quick. Send a few details and pictures, and we typically reply with a fixed quote within one working day. If we need to see the system first, we book a survey around your hours.
Related advice
Radwell questions
Is Radwell within the area you cover?
Yes. Radwell is within the area we cover across London and the South East. Just mention lanes, gates or anything else about the site when you book.
Can ventilation in schools around Radwell be cleaned out of term?
Yes, out-of-term visits are normal for schools. The FSA’s register shows about 5 schools and colleges with food registrations within roughly a mile and a half of Radwell. Just call us on 0345 646 2711 or email us with your term dates and we will plan around them.
Do you give a certificate after the clean?
Yes. A TR19® certificate and photo report are sent after the clean, with any faults we noticed.
Do you clean the ductwork as well?
Yes. We clean supply and extract ductwork to TR19® Air as well. It’s often worth doing both at once, and we can quote for both.
Can you quote from photos?
Typically, yes. Send a few wide pictures plus close-ups of panels, filters or grilles, and we typically come back within one working day. If photos aren’t enough, we will survey first.
Can you set up regular visits?
Yes. Scheduled maintenance plans are part of what we do, with visits at the interval your system needs. Each report recommends when the next visit should be.
How long does an AHU clean take?
As a guide, it takes one overnight shift for many single units, with bigger plant phased. We plan the shutdown around that, out of hours if needed.
What types of premises do you cover?
Any commercial site with kitchens or ventilation, from a single café to a large school. We work with hotels, schools, care homes, offices, retail and leisure sites.
Different parts, different methods
Filters
Every AHU relies on its filters to catch dust before it reaches the coils. We check them, and clean or change them as agreed in the quote, and the housing around them is cleaned too.
Internal casing and panels
We open each section through its doors and close them securely when we are done before the unit is handed back.
Why it’s worth doing now in Radwell
A light clean now is simpler than a heavy one later. Leave it for years and dirt bakes onto coils and casings, particularly where damp has made it stick. A fault that closes a site in a village like Radwell affects everyone who depends on it.
Whatever the type of site, the quote works the same way: the size of the job, access, condition and working hours. Call for a fixed quote and we will go through it with you.
Why book with us
- Survey first, then a fixed quote
- Fully insured
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Work around your opening hours, with 24/7 emergency cover
Take a look at our cost guide and how to check a contractor.
Places near Radwell
Also in Radwell
AHU cleaning in Radwell: local notes
There are about 5 schools, colleges and universities and about 12 caring premises (care homes, nurseries and hospitals) on the FSA’s food hygiene register in and around Radwell, up to about a mile and a half out. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. Radwell is about 35 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. For Radwell, the closest hospital is Fairfield Hospital, roughly 1.9 miles west. Clean air matters most where people are unwell, and that is as true in a care home as in a hospital.
Healthcare buildings such as Fairfield Hospital, about 1.9 miles west, depend on their ventilation; if you manage a surgery, clinic or care home near Radwell, yours matters too.
Radwell is about 2 miles north of Letchworth, in Hertfordshire. For AHU cleaning in and around Radwell, please call us on 0345 646 2711 or drop us a line for a fixed quote. We work across South East England and London, Radwell included. Radwell is one of 381 places in Hertfordshire where we work for commercial clients. For sites nearby, see our Milton Keynes page (24 miles or so).
We work across SG7 for AHU cleaning and the streets around it. We cover sites on Radwell Lane and The Limes and nearby roads. Nearby, we also carry out AHU cleaning in Stotfold (1 mile west), Stotfold Common (2 miles north-west), Fairfield (2 miles west) and Astwick (2 miles north-west). Within a short drive, we also cover Stevenage (7 miles south), Welwyn Garden City (14 miles south), Harpenden (15 miles south-west), Hitchin (5 miles south-west), Hertford (15 miles south) and Ware (15 miles south-east).
Near you in Radwell
Around Radwell, our work takes us to kitchens and buildings near The Knights Templar School, Norton School and The Chequers Public House, among other places. For rail, the closest station is Baldock station, roughly 1.2 miles south-east. A little further out are Bygrave House (2 miles east) and Fairfield Hospital (1.9 miles west). Not far away are Arlesey Old Moat and Glebe Meadows.
Keeping the system healthy
Simple habits between visits make a real difference. We recommend:
- Keep inspection doors on the unit in good order
- Store the TR19 paperwork where auditors can find it
- Make sure condensate is draining away
- Stick to the filter change plan
We recommend when the unit should next be inspected or cleaned, based on what we found. TR19® Air is risk-based, so the interval depends on the unit and how the building is used.
Keep the area around the intake clear. Anything around the intake is likely to be drawn in.
What AHU cleaning can’t fix
AHU cleaning can’t fix everything, and we’ll tell you before we start. It doesn’t solve:
- Ventilation that was badly designed in the first place
- Controls and BMS settings that run the unit
- Faulty motors, drives or bearings
If in doubt, phone us on 0345 646 2711 or use the quote form and we will say what we think.
What we work on in Radwell
- Supply and extract fans
- Dampers and louvres
- Drain trays
- Heating and cooling coils
- Filter sections
- Internal panels
When to call us in Radwell
No filter stops everything. What gets through settles on coils, fans and the inside of the casing, building up layer by layer.
Signs it’s time to call us include:
- Drain trays holding standing water
- Plant that has been serviced but not cleaned
- Stale or musty smells from the ventilation
- Fan sections that haven’t been cleaned in years
Wherever a school like Norton St Nicholas CofE (VA) Primary School has ducted ventilation, a half-term visit keeps the work out of lesson time.
What to look for in a quote
- How areas they can’t reach will be recorded
- How they set the interval to the next visit
- If they look at the system before pricing
- What hours they’ll be on site