Hampshire · Air handling unit cleaning
AHU Cleaning in Southwood
Need AHU cleaning in Southwood? We diagnose first, fix the price and book the work around your hours, finishing with a written report and photos.
- Stale or musty smells from the ventilation
- Air handling units due a clean after building work
- Air handling units with blocked filters
In-house cleaning or a specialist?
Staff cleaning does not replace a specialist visit; it supports it. Clean filters and tidy surfaces slow the build-up, but the parts you cannot see still need a specialist at the right interval.
Day-to-day cleaning is something your team can do: wiping canopies, washing grease filters and recording it in a log. What they can’t safely do is clean inside the ductwork, the fan or the risers, and that is where we come in.
About our AHU cleaning in Southwood
Our AHU cleans for sites in Southwood cover the parts that collect dirt: filters, coils, drain trays, fans and the internal panels. You get a TR19® certificate and a photo report showing the unit before and after. The work covers filter sections, drain trays and heating and cooling coils, and common reasons people get in touch are air handling units never cleaned inside and dirty coils holding back the airflow.
Visits to a place like Southwood are fitted around opening hours. The work is the same as in any town: inspect, clean, record.
Nothing is signed off by word of mouth: a written report, dated and illustrated with pictures, and for TR19® Grease cleans, a certificate issued through the BESCA VHE portal. Any parts we couldn’t reach are recorded on it too.
- Where
- Southwood (GU14, GU51)
- Wider area
- Hampshire
- Paperwork
- Report and pictures after the visit
- Price
- Fixed quote, typically within a working day
- When we work
- Evenings, overnight and weekends; 24/7 emergencies
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
Also near Southwood
Other services in Southwood
What a clean will not put right
We’ll always give you a straight diagnosis, so here’s what AHU cleaning won’t do:
- Building management system faults
- Coils that are corroded or leaking and need replacing
- Ductwork downstream of the unit, which is a separate clean
If in doubt, call 0345 646 2711, or send details by email and we will say what we think before booking.
Where we work
- Internal panels
- Heating and cooling coils
- Dampers and louvres
- Supply and extract fans
- Drain trays
- Filter sections
Different parts, different methods
Heating and cooling coils
Coil fins are close together and catch the dust the filters miss. They’re cleaned using methods that will not bend or flatten the fins.
Drain trays
The drain tray collects water from the cooling coil. Standing water and slime are removed and the outlet is checked.
Between visits
Looking after the system between visits is straightforward, and it makes the next visit easier:
- Do not ignore odours coming through the grilles
- Keep inspection doors on the unit in good order
- Make sure condensate is draining away
- Change filters on schedule and log each change
You receive a TR19® certificate and a photo report after the clean. Keep both with the building’s maintenance records.
Regular filter changes are the best protection an AHU has. Once filters clog, dirt starts getting past them.
What happens on the day
Our technicians bring everything the work needs, from protective sheeting to tools and access equipment. All we need from you is clear access and the right equipment switched off. On site, the work takes half a day to a full day per unit, with large plant planned over several shifts. Tell us when your site near Southwood is quiet and the visit will be booked for then.
- We survey the unit from photos 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.
- We clean out the drain tray and make sure it drains.
- A TR19® certificate and photo report follow the clean.
Before we arrive
- Tell us the best time to work, such as after service or at a weekend
- Tell us about site rules, permits or sign-in
- Move anything stored near the system
Getting a 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.
Advice
Southwood buildings and their air
Food Standards Agency records list about 14 schools, colleges and universities and about 8 caring premises (care homes, nurseries and hospitals) registered as food businesses in Southwood and the streets around it, up to about 1.5 miles out. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. At about 34 miles from central London, Southwood sits well inside the area we cover. A survey and a fixed quote come first, then the visit at a time that suits you. The nearest hospital to Southwood is Fleet Community Hospital, about 2.2 miles west. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes.
Classrooms and halls at schools such as Southwood Infant School are easiest to work in when pupils are away.
Southwood is about 1 mile west of Farnborough, in Hampshire. From the centre of Southwood to the outskirts, we cover AHU cleaning for every kind of premises, from small sites to large estates. Our Hampshire coverage runs to 683 places, Southwood among them. We also work in Guildford, around 10 miles away.
All of GU14 and GU51 is covered for AHU cleaning, from the main roads to the quietest streets. If you need AHU cleaning at premises on Fleet Road, Kennels Lane and Summit Avenue or anywhere close by, our technicians can take on the work. If your site is just outside Southwood, we cover Cove (1 mile north), Farnborough (1 mile east), North Camp (2 miles east), Mytchett (3 miles east) and Aldershot (3 miles south-east). Further out, we also cover Basingstoke (13 miles west), Alton (12 miles south-west), Yateley (4 miles north-west), Bordon (13 miles south), Hook (7 miles west) and Popley (12 miles west).
Local landmarks in Southwood
We work in commercial kitchens and buildings around National Aerospace Library, Ancells Farm Park and Cove School, among other places. For rail, the closest station is Fleet station, about 1.5 miles west of the centre. Other landmarks nearby include Hart Shopping Centre (2.1 miles west) and Royal Army Dental Corps Historical Museum (2.6 miles south-east). Open spaces near Southwood include Aunt's Pool and Ball Hill.
FAQs for Southwood
Can you get to a site in Southwood?
Yes, Southwood is part of our area, however small the site. Photos of the system and directions to the site help us plan the visit.
Can you come to Southwood after we close?
Yes, we can come after you close and finish before you open. That way a site in Southwood does not have to lose a day’s trading. Just phone us on 0345 646 2711 or send us an email with your opening times and we will plan around them.
How long will the unit be out of action?
Typically the clean takes one overnight shift for many single units, with bigger plant phased. The shutdown is planned to fit, including evenings or weekends.
Are you accredited?
We hold CHAS, SafeContractor and ISO 9001, alongside BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. Vent Hygiene Elite is run by BESCA and independently audited.
What do you need from me for a quote?
Only a few details: where it is, what kind of site, when it’s open and the access. Photos and the last report help too. After that, simply phone us on 0345 646 2711 or send us an email.
What does AHU cleaning cost?
We don’t publish prices, because the cost depends on the job: the size of the system, its condition, access and when we can work. We fix the price before any work starts.
How often do AHUs need cleaning?
Under TR19® Air, cleaning is led by inspection and risk rather than a set calendar. Each report suggests when the unit should next be looked at.
Are you insured?
Yes, we’re fully insured. We also hold CHAS and SafeContractor, for sites that check contractor safety.
What we are called out for in Southwood
Whatever surrounds a building in Southwood, the air drawn into its AHU carries dust, pollen and debris. Most of it lands at the intake and the first stage of filters, and some travels further into the unit.
What we’re most often called out for:
- Filters that are clogged or overdue
- Dirty coils holding back the airflow
- Debris and leaves in the fresh air intake
- Plant that has been serviced but not cleaned
If you run a surgery, dental practice or care home near Southwood, clean ventilation matters as much to you as to a hospital like Fleet Community Hospital (about 2.2 miles west).
What to look for in a quote
- How areas they can’t reach will be recorded
- Proof of accreditation you can verify
- Whether the whole system is included, or only the parts that are easy to reach
- Proof of insurance
Fixed quotes for AHU cleaning in Southwood
You’ll get a fixed price before any work starts. It takes into account:
- Working hours and out-of-hours timing
- The number of sites or systems
- Site rules, permits and inductions
- A single visit or a regular plan
We don’t list prices on the website, because the cost depends on the site in front of us. Call for a fixed quote, and we’ll explain what it covers.
What to send for a quote
When you call or email, it’s useful to have:
- When the site is open and when it’s quiet
- Any symptoms, from odd noises to smells or leaks
- Any access panels or hatches you can see
- Your last certificate, test record or report
We don’t publish a price list, because no two systems are the same. Instead, we look at your site first, from pictures or a survey, then send a fixed quote. To start, give us a ring on 0345 646 2711 or drop us a line.