Hertfordshire · Air handling unit cleaning
AHU Cleaning in Foxholes
AHU cleaning for Foxholes and the surrounding area: a survey, a fixed price, careful work and proper paperwork. Ask us for a fixed quote.
- Rooms that smell stuffy when the system runs
- Intake sections clogged with outdoor debris
- Filters that are clogged or overdue
AHU cleaning in Foxholes
Units vary a lot in size, age and layout, whether it’s a compact unit in a ceiling void or a big unit on the roof. We look at the unit first, from photos or a site visit, and send you a fixed quote before any cleaning starts. The work covers heating and cooling coils, filter sections and internal panels, and the jobs we see most are air handling units never cleaned inside and dirty coils holding back the airflow.
Visits to a place like Foxholes are fitted around opening hours. The work is the same as in any town: inspect, clean, record.
We’ve been trading since 2009, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
- Where
- Foxholes (SG13)
- Region
- Hertfordshire
- Reporting
- Photo report after every visit
- Quotes
- A fixed price before work begins
- Working hours
- Out of hours as standard, 24/7 emergency line
- Call
- 0345 646 2711
- Checked
- 30 October 2026
The process
We turn up at the time agreed with you, often in the evening, overnight or at the weekend so the site keeps working. Anything that needs to be off for the work is switched off and left to cool first, 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. In a smaller place like Foxholes, parking is rarely the issue, but tell us about gates, roof access and opening hours.
- 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.
- Standing water and slime come out of the tray and the drain is checked.
- We close up the unit and send the certificate and before and after pictures.
Before we arrive
- Name a contact who can let us in at the agreed time
- Clear the space around the work
- Find the previous report, if there is one
Ask for a quote
To help us quote: the address, the type of site and when it’s open, photos of the system and any previous report or certificate. Then call us on 0345 646 2711 or send us an email.
Advice
FAQs for Foxholes
Is Foxholes within the area you cover?
Yes, smaller places are covered as well as towns. The journey is planned ahead, so a few details about the route help.
Do you clean school ventilation in Foxholes in the holidays?
Yes, holiday work suits schools best. There are about 17 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Foxholes. Booking early in the term gives the best choice of holiday dates.
What is TR19?
It’s BESA’s specification and the benchmark insurers, fire officers and EHOs look to. It covers how systems are inspected, cleaned and checked, and it takes a risk-based approach.
Which sectors do you work in?
Restaurants and pubs, hotels, schools and colleges, hospitals and care homes, offices and retail, plus food production and leisure sites.
Do you need to switch the unit off?
Yes. Cleaning needs the unit off and isolated, and we time the work to suit the site.
Where does the waste go?
We take it away when we go. While we work, it’s kept contained so the area stays clean.
How much does AHU cleaning cost?
There’s no set price, as it depends on the job: how big it is, what state it’s in, how we reach it and the working hours. We fix the price before any work starts.
Can you come out in an emergency?
Yes, any time. For anything urgent, such as a fan failure or damage after a fire, ring the 24/7 line, and we’ll advise on what to do next.
Between visits
A little care between visits keeps the system in better shape. Our advice:
- Note any water around the unit or leaks below it
- Flag stale or damp smells in the supply air
- Clear leaves and litter away from the intake
- Look at the condensate drain whenever the unit is serviced
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 confirm water is draining away.
Keep the unit’s doors and panels in working order. If a section is hard to get into, it tends not to get checked.
Nearby places to Foxholes
Other services in Foxholes
AHU cleaning in Foxholes: local notes
The FSA’s food hygiene register lists about 17 schools, colleges and universities and about 10 caring premises (care homes, nurseries and hospitals) with registered kitchens or food service across Foxholes and its immediate surroundings (about a mile and a half). Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. About 1.5 miles west of Foxholes is Hertford County Hospital, the nearest hospital. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes. Foxholes is about 20 miles from central London, well within the area we cover across London and the South East. We work evenings, overnight and at weekends, so the visit fits around the site.
Healthcare buildings such as Hertford County Hospital, about 1.5 miles west, depend on their ventilation; if you manage a surgery, clinic or care home near Foxholes, yours matters too. If you manage a school such as Wheatcroft Primary School, ventilation cleaning is best booked for the holidays.
Foxholes is about 1 mile east of Hertford, in Hertfordshire. Whatever kind of site you run in Foxholes, AHU cleaning is something we can help with. We can work out of hours so the site keeps running. Foxholes is one of 381 towns, villages and districts in Hertfordshire where we work for AHU cleaning. You can also see our page for London, roughly 20 miles from Foxholes.
Work in SG13 is surveyed, quoted and booked the same way as anywhere else. That includes premises on Ware Road, London Road and Fairfax Road and the roads around them. Neighbouring places we cover for AHU cleaning include Rush Green (1 mile north-east), Hertford Heath (1 mile south-east), Hertford (1 mile west), Little Amwell (1 mile south-east) and Horns Mill (1 mile south-west). Within a short drive, we also cover Stevenage (10 miles north-west), St Albans (12 miles west), Bishop's Stortford (10 miles north-east), Welwyn Garden City (6 miles west), Harpenden (13 miles west) and Hitchin (14 miles north-west).
Around Foxholes
Around Foxholes, our work takes us to kitchens and buildings near Simon Balle All-Through School, The Saracens Head Public House and Hertford Regional College and the streets around them. The closest station to Foxholes is Hertford East station, about 0.8 miles north-west of the centre. Nearby you’ll also find Hertford County Hospital (1.5 miles west) and Mcmullen & Sons Brewery Museum (1.2 miles west). For a walk, there’s King's Meads.
Common problems we fix in Foxholes
Filters catch most of the dust, but not all of it. The fine dust that passes the filters lands on the coils, the fan and the internal panels, a little more each month.
Look out for any of the following:
- Filters that are clogged or overdue
- Odours coming through the supply air
- Units needing a clean before a new tenant or handover
- Blocked condensate drains and slimy trays
Workplaces around Hertford East station with an air handling unit need the filters, coils and drain tray looked at, as well as the ducts.
What to look for in a quote
- Whether inaccessible sections are listed on the report
- Whether the quote shows VAT
- When they can work, and whether that is outside your opening hours
- Whether the whole system is included, or only the parts that are easy to reach
What affects the cost of AHU cleaning
Every site gets its own quote. These are the things that affect it:
- The times the site is available
- Site rules, permits and inductions
- Access, including roofs, risers and ceiling voids
- The size of the system
Working hours, access and the scale of the site all affect the cost. We take each of them into account, and the price is fixed before work begins.
Helping us quote
A few details help us quote accurately. With your enquiry, please include:
- Any symptoms, from odd noises to smells or leaks
- Any previous report or certificate
- Close-ups of filters, grilles, hatches or access panels
- The site address and the type of premises
Every quote begins with a look at the system, either from photos and details you send or from a site visit. After that, you get a fixed price for the work, before work begins.
Different parts, different methods
Filters
Every AHU relies on its filters to catch dust before it reaches the coils. As part of the clean, filters are checked and cleaned or replaced as agreed, and the housing around them is cleaned too.
Rooftop and plant room units
Units outside are exposed to weather and windblown debris. The intake section gets particular attention.
What your team can do, and what needs us
Day-to-day cleaning is something your team can do: wiping canopies, washing grease filters and recording it in a log. Inside the ducts, risers and fan is specialist work, and that’s where we come in.
Staff cleaning doesn’t replace a specialist visit; it supports it. Clean filters and tidy surfaces slow the build-up, but hidden parts of the system still need specialist attention.
What AHU cleaning cannot fix
An honest diagnosis matters more to us than a booking, so here’s what AHU cleaning won’t do:
- Damaged coils beyond cleaning
- Building management system faults
- Ductwork downstream of the unit, which is a separate clean
If in doubt, phone us on 0345 646 2711 or email us and we’ll say what we think before booking.
Where we work
- Filter sections
- Heating and cooling coils
- Internal panels
- Drain trays
- Supply and extract fans
- Dampers and louvres