Hampshire · Air handling unit cleaning
Cottonworth AHU cleaning
Need AHU cleaning in Cottonworth? We diagnose first, fix the price and book the work around your hours, then sign off with a report and photos.
- Dust built up on fan impellers
- Debris and leaves in the fresh air intake
- Drain trays holding standing water
AHU cleaning in Cottonworth, done properly
An air handling unit is the heart of a building’s ventilation: air is pulled in, filtered, conditioned and sent out through the ducts. Whatever builds up inside it travels with that air, which is why we clean the unit itself, not just the ducts. The work covers drain trays, internal panels and dampers and louvres, and the jobs we see most are blocked condensate drains and slimy trays and air handling units never cleaned inside.
In a village or hamlet like Cottonworth, few buildings have mechanical ventilation, but those that do need it inspected and cleaned like any other.
We have been trading since 2009, and we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we’re fully insured.
- Location
- Cottonworth (SP11)
- Wider area
- Hampshire
- Reporting
- Photo report after each visit
- Price
- A fixed quote up front
- Hours
- Evenings, overnight and weekends; 24/7 emergencies
- Call
- 0345 646 2711
- Checked
- 30 October 2026
AHU cleaning in Cottonworth: local notes
Cottonworth’s nearest hospital, Andover War Memorial Hospital, is about 4.4 miles north. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes.
Healthcare ventilation, from large hospitals like Andover War Memorial Hospital (about 4.4 miles north) to small clinics, depends on clean filters, coils and ducts. In Cottonworth, we look inside the system before deciding what needs cleaning.
Cottonworth is about 4 miles south of Andover, in Hampshire. Sites in Cottonworth get the same service as everywhere we cover: diagnosis first, a fixed price, out-of-hours working where necessary and a written report with pictures. Our Hampshire coverage runs to 683 places, Cottonworth among them. We also work in Southampton, around 17 miles away.
We work across the SP11 postcode area for AHU cleaning and the roads nearby. Other places close to Cottonworth include Fullerton (1 mile south-west), Chilbolton (1 mile east), Wherwell (1 mile north-east), Wherwell Wood (1 mile north) and Leckford (1 mile south). Within a short drive, we also cover Winchester (9 miles south-east), Eastleigh (14 miles south), Andover (4 miles north), Chandler's Ford (12 miles south), Romsey (11 miles south) and Hyde (9 miles south-east).
What’s near Cottonworth
Around Cottonworth, our work takes us to kitchens and buildings near Longstock Park and Abbots Mitre pub, among other places. The closest station to Cottonworth is Andover station, about 4.1 miles north. Other landmarks nearby include Andover War Memorial Hospital (4.4 miles north) and Andover Museum (3.8 miles north). Not far away are Anton Lakes and Mill Lake.
Why deal with it now?
Stuffy rooms and stale smells in a building in Cottonworth can sometimes be traced back to the AHU. A clean tackles the source instead of masking it. It’s worth booking a check, because nobody sees inside a duct day to day.
The price reflects the work, not guesswork. That’s why every job is surveyed first, and why the quote is fixed before we start.
Why book with us
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- CHAS, SafeContractor and ISO 9001
- Fixed quotes from a survey or pictures
- Work around your opening hours, with 24/7 emergency cover
Read our cost guide or our accreditations.
Questions from Cottonworth
Is AHU cleaning available in Cottonworth?
Yes. We work across London and the South East, and Cottonworth is part of that. To start, call 0345 646 2711 or use the quote form with a few pictures of the system.
Do you work at weekends in Cottonworth?
Yes, we can come after you close and finish before you open. That way a site in Cottonworth doesn’t have to lose a day’s trading. Tell us your opening hours when you ask for a quote.
Will you repair the fan or motor?
Our AHU work is cleaning rather than mechanical repair. Any faults we notice are recorded for your maintenance team to follow up.
What’s TR19?
BESA’s ventilation hygiene specification in two main parts: TR19® Grease for kitchen extract systems and TR19® Air for general ventilation. It isn’t law, but it’s the benchmark.
Do you need to switch the unit off?
Yes. We can’t clean a running unit, so it’s switched off and made safe first. We agree the timing with your site team.
How much does AHU cleaning cost?
We do not publish prices, because the cost depends on the job: how big it is, what state it’s in, how we reach it and the working hours. You get a fixed price before any work starts.
Which sectors do you work in?
All kinds of commercial and public premises: from restaurants, pubs and hotels to schools, hospitals, care homes, offices, shops and food production sites. Work is timed around how each site runs.
Do you give a certificate after the clean?
Yes, a TR19® certificate and a photo report. The report also suggests when the unit should next be inspected.
Part by part
Rooftop and plant room units
Smaller units in ceiling voids are part of the work as well. The space underneath is protected with sheeting first.
Filters
What’s on the filters is a good clue to what’s further in. They’re photographed before and after for your records.
Multi-site and managed buildings
Managing agents often deal with us directly. Send the address, what’s needed and how access works, and we’ll send a fixed quote.
We also work for facilities teams across offices, schools and healthcare across Hampshire. Work can be phased by floor, building or site around the people who use them.
What staff can safely do
Logging matters as much as cleaning. A simple log of filter washes, wipe-downs and checks shows an inspector that the system is looked after between visits, alongside our reports.
A few tasks are always specialist work: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease need training, the right equipment and safe access. Leave those to us.
What AHU cleaning can’t fix
We will not sell you work that does not address the problem, so here are the limits:
- Ventilation that was badly designed in the first place
- Controls and BMS settings that run the unit
- The supply and extract ducts, quoted separately
If you’re not sure, just phone us on 0345 646 2711 or send us an email and we will give you a straight answer before you book.
What the work covers
- Filter sections
- Heating and cooling coils
- Supply and extract fans
- Internal panels
- Drain trays
- Dampers and louvres
Nearby places to Cottonworth
Other services in Cottonworth
Aftercare tips
Once we have finished, these simple steps help:
- Keep inspection doors on the unit in good order
- Watch for drips or damp patches near the plant
- Clear leaves and litter away from the intake
- Don’t ignore odours coming through the grilles
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. Sections that are awkward to open are the ones that get skipped.
The process
On the day, we arrive at the time agreed with you, often in the evening, overnight or at the weekend so the site keeps working. Equipment that has to be off is switched off and allowed to cool first, and the area around the work is covered and protected. The work itself takes anything from half a day for one small unit to several shifts for a plant room full of them. For a village or hamlet like Cottonworth, tell us about narrow lanes, gates and parking when you book.
- We look at the unit and the plant area during the survey.
- We sheet the area and the unit is isolated.
- Dirt and debris are removed from each section.
- We clean the coils and clear the tray and drain.
- We close every panel, hand the unit back and send the report and certificate.
How to prepare
- Let us know about parking and loading
- 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 the quickest way to a quote: the system from a couple of angles, plus any access panels or hatches. Tell us what kind of site it is and when it’s open, and we can price many jobs without a visit.