Hampshire · Air handling unit cleaning
Preston Candover AHU cleaning
AHU cleaning in Preston Candover from ventilation hygiene specialists trading since 2009. Evenings, overnight and weekends, plus a 24/7 emergency line.
- Leaves and litter drawn into the unit
- Dust-coated heating and cooling coils
- Fan sections that haven’t been cleaned in years
Preston Candover questions
Can the work in Preston Candover be done at night or at weekends?
Yes. We work evenings, overnight and at weekends. Your customers, staff or residents in Preston Candover needn’t be disturbed. Just phone us on 0345 646 2711 or use the quote form with your opening times and we will plan around them.
Do you offer AHU cleaning in Preston Candover?
Yes. Our area runs across London and the South East, Preston Candover included. To start, call us on 0345 646 2711, or send details by email with a few photos of the system.
Will you repair the fan or motor?
The clean includes noting faults, but repairs sit with your maintenance contractor, with photos where it helps.
How often should an air handling unit be cleaned?
TR19® Air takes a risk-based approach, so it depends on inspection rather than a fixed interval. Each report suggests when the unit should next be looked at.
What does TR19 mean?
TR19® is BESA’s specification for ventilation hygiene. Since 2019, TR19® Grease has been a standalone specification for grease in kitchen extract systems, and TR19® Air covers general supply and extract systems.
Do you survey before quoting?
Yes, every time. Diagnosis comes before treatment: the survey shows what needs doing and what access we need, and the quote is based on that.
Do you do ventilation duct cleaning too?
Yes. We clean supply and extract ductwork to TR19® Air as well. It’s often worth doing both at once, and we can survey both on the same visit.
What do you need from me for a quote?
Some photos and a quick description of the system, with the address and opening hours. If we need more, we’ll ask.
AHU cleaning for kitchens and businesses in Preston Candover
Heating and cooling coils trap dust that gets past the filters. A coated coil restricts airflow and makes the unit work harder. We clean coils with methods suited to their condition, taking care not to damage the fins. We’re often asked to deal with intake sections clogged with outdoor debris and air handling units with blocked filters, across internal panels, filter sections and drain trays.
For a building in or near Preston Candover, access is agreed in advance and the visit is planned around the journey, and the ventilation is inspected, cleaned and recorded the same as anywhere.
Duct Doctor has been trading since 2009, as 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.
- Where
- Preston Candover (RG25)
- Wider area
- Hampshire
- Paperwork
- Report and photos after the visit
- Quotes
- A fixed price before work begins
- When we work
- When your site is closed, plus a 24/7 line
- Phone
- 0345 646 2711
- Checked
- 30 October 2026
What affects the quote in Preston Candover
We quote each job individually. This is what makes a difference:
- Parking and loading at the site
- Access, including roofs, risers and ceiling voids
- Whether it’s a one-off visit or part of a schedule
- Site rules, permits and inductions
Kitchens, offices, schools and hospitals are all priced the same way: the size of the job, access, condition and working hours. Ask for a fixed quote and we’ll go through it with you.
What to send for a quote
Many jobs can be priced from photos and some basics. Send what you can of the following:
- Problems your staff have spotted
- Your opening hours and when the area is out of use
- The postcode and the type of business
- Photos showing the whole system and its surroundings
Photos are enough for some jobs, while others need a look on site. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, you get a fixed price before any work starts.
What AHU cleaning looks like in Preston Candover
At about 50 miles from central London, Preston Candover sits well inside the area we cover. A survey and a fixed quote come first, then the visit at a time that suits you.
For buildings in and around Preston Candover, TR19® Air cleaning starts with an inspection.
Preston Candover is about 7 miles south of Basingstoke, in Hampshire. Across the RG25 area, we can take on AHU cleaning. We cover 683 places across Hampshire, large and small. We also work in Reading, around 20 miles away.
Every address in RG25 is covered for AHU cleaning, from busy streets to back roads. If you need AHU cleaning at premises on Stenbury Drive, Farriers Close and Garden Close or a nearby road, our technicians can take on the work. Neighbouring places we cover for AHU cleaning include Upper Wield (2 miles south-east), Brown Candover (2 miles south-west), Totford (3 miles south-west), Northington (4 miles south-west) and Bighton (5 miles south). Within a short drive, we also cover Basingstoke (7 miles north), Winchester (11 miles south-west), Fleet (15 miles north-east), Andover (15 miles west), Alton (7 miles east) and Petersfield (14 miles south-east).
Landmarks near Preston Candover
We work in commercial kitchens and buildings around The Purefoy Arms Public House and the streets around them. Well-known places in the area include Barton Castle (2.4 miles south). The countryside around Preston Candover includes Farleigh Hill.
What staff can safely do
Your own staff can handle the daily basics: wiping canopies, washing grease filters and recording it in a log. Inside the ducts, risers and fan is specialist work, which is where we come in.
Some jobs should never be done in-house: entering ducts, working on fans, testing dampers and taking grease readings call for the right kit, training and safe access. Leave those to us.
Towns and villages near Preston Candover
More services for Preston Candover
When something else is needed
It’s worth knowing the limits before booking:
- Building management system faults
- Leaking heating or cooling coils
- Airflow problems caused by the system’s design
If in doubt, ring 0345 646 2711 or use the quote form and we will say what we think.
Parts of the system we cover
- Supply and extract fans
- Heating and cooling coils
- Drain trays
- Dampers and louvres
- Internal panels
- Filter sections
How the visit works
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. 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 a single shift for a typical unit, longer for large or heavily soiled ones. Photos of the system and how to reach it help us plan a visit to Preston Candover.
- We agree a shutdown window that suits the building.
- Before cleaning, each section is photographed.
- We work through the unit from the intake to the outlet.
- We finish with the fan section and the drain tray.
- After pictures are taken and the certificate issued.
Getting ready for the visit
- Tell us about site rules, permits or sign-in
- Mention any parking or loading restrictions
- Let us know how we reach the system, including roofs, risers and plant rooms
Getting a quote
Want a quote for AHU cleaning? Please phone us on 0345 646 2711 or use the quote form and tell us about the site. We will talk you through the work and send you a fixed quote before anything is booked.
Advice
Managing agents and facilities teams in Preston Candover
Managing agents often deal with us directly. Send the address, what’s needed and how access works, and we will send a fixed quote.
Where a tenant occupies the premises but the landlord owns the building, it’s worth checking the lease for who maintains the systems. We can quote either party and send the paperwork to whoever needs it.
What we are called out for in Preston Candover
An overdue filter loads up with dirt, which cuts the airflow and can let air slip round the filter. Then the rest of the unit takes the load.
What we are most often called out for:
- Air handling units with blocked filters
- Plant that needs cleaning after a refit
- Dirty fans and fan housings
- Coils clogged with dust and debris
If you manage a school such as Preston Candover Church of England Primary School, ventilation cleaning is best booked for the holidays.
Before booking anyone
- When the next visit should be, and why
- Whether they’re fully insured
- Whether the quote shows VAT
- Proof of accreditation you can verify
Aftercare tips
Results last longer with the right care. We suggest:
- Keep the area around the fresh air intake clear
- Plan the next inspection before the last report gets filed away
- Make sure condensate is draining away
- Report stiff or damaged access doors
Photos in the report cover the filters, coils, drain tray, fan and casing, and note any part we couldn’t get to. It also notes faults we spotted, such as damaged panels or a blocked drain.
Check drain trays and condensate drains during routine maintenance. Catching a slow drain early stops standing water building up.