Buckinghamshire · Air handling unit cleaning
Little Marlow AHU cleaning
Looking for AHU cleaning in Little Marlow? We diagnose first, fix the price and book the work around your hours, then sign off with a report and pictures.
- Plant that needs cleaning after a refit
- Dirty coils holding back the airflow
- Fan sections that haven’t been cleaned in years
Keeping the system healthy
Here’s the after-treatment advice, short and simple:
- Keep the area around the fresh air intake clear
- Make sure condensate is draining away
- Keep inspection doors on the unit in good order
- Report musty smells from the vents straight away
When we’ve 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.
Have the unit inspected regularly, in line with the risk-based approach of TR19® Air, rather than waiting for a problem.
AHU cleaning in Little Marlow
Drain trays under cooling coils are meant to empty. If the outlet blocks, standing water and slime build up, right in the path of the air going into the building. Clearing and cleaning the tray is central to every AHU clean. The work covers supply and extract fans, internal panels and filter sections, and common reasons people get in touch are fan sections that haven’t been cleaned in years and plant that needs cleaning after a refit.
In rural areas, ventilation units are often in roof voids or outbuildings, where filters and drain trays get forgotten.
Insurers, fire officers and environmental health officers all look at records. That is why every job is written up in a report with pictures, and grease extract cleans come with a TR19® certificate issued through the BESCA Vent Hygiene Elite portal.
- Place
- Little Marlow (SL7)
- Region
- Buckinghamshire
- Records
- Report and photos after the visit
- Quote
- A fixed price before work begins
- Working hours
- When your site is closed, plus a 24/7 line
- Call
- 0345 646 2711
- Updated
- 30 October 2026
Common problems we fix in Little Marlow
Cooling coils create condensation, and that water has to go somewhere. If the drain tray outlet blocks or the tray doesn’t fall properly, water stands in it, and that is where slime and odours start.
If you notice any of these, it’s worth a diagnosis:
- Air handling units with blocked filters
- Plant that needs cleaning after a refit
- Stale or musty smells from the ventilation
- Dust-coated heating and cooling coils
If you run a surgery, dental practice or care home near Little Marlow, clean ventilation matters as much to you as to a hospital like Marlow Community Hospital (about 1.5 miles south-west).
Before booking anyone
- Proof of accreditation you can verify
- Whether inaccessible sections are listed on the report
- Whether they recommend a next date
- Whether the quote is based on a survey or pictures
The process
Night work is normal for us. A lot of visits happen overnight or at weekends, so the site can open as normal afterwards. On site, the work takes half a day to a full day per unit, with large plant planned over several shifts. If the van will struggle with a lane or gateway near Little Marlow, let us know and we’ll plan around it.
- First the unit is surveyed, from pictures or a visit, and the scope agreed.
- With your site team, the unit is switched off and isolated, then the area around it protected.
- We clean or change the filters as agreed, then clean the coils, fan and internal panels.
- 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 photos.
How to prepare
- Allow time for equipment near the work to be turned off and cool down
- Clear the space around the work
- Tell us where we can park and unload
How to get a quote
We don’t publish a price list, because every site is different. We look at your system first, from photos or on a visit, and then give you a fixed quote. To start, phone us on 0345 646 2711, or send details by email.
Advice
What affects the cost of AHU cleaning
Sites vary more than people expect. What affects the quote:
- The condition we find in the survey
- When the work can happen, such as evenings, overnight or weekends
- How big the system is
- Whether several sites go on one quote
What you pay reflects the actual work. That’s why every job is surveyed first, and the price is agreed before any work starts.
Helping us quote
When you call or email, these details help:
- Your last certificate, test record or report
- Your opening hours and when the area is out of use
- Any symptoms, from odd noises to smells or leaks
- Any access panels or hatches you can see
To help us quote: where the site is, what it is and its opening hours, pictures of the system and the last certificate or report, if there is one. Once you have those, give us a ring on 0345 646 2711 or use the quote form.
Different parts, different methods
Drain trays
Older trays can corrode and start leaking. We record their condition with photos so you can decide on any repairs.
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.
Little Marlow: your questions answered
Can the work in Little Marlow be done at night or at weekends?
Yes, out-of-hours work is a big part of what we do. The work in Little Marlow can fit around your hours. Let us know the hours you’re closed and we will book within them.
Do you cover smaller places like Little Marlow?
Yes, smaller places are covered as well as towns. A survey first, from photos or a visit, means we arrive with the right kit.
Do you clean the ductwork as well?
Yes, supply and extract ducts, grilles and diffusers. We will tell you after the survey whether the ducts need it.
What accreditations do you have?
Duct Doctor is a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we are fully insured.
What does AHU cleaning cost?
The cost depends on the size of the system, its condition, access and timing. Call for a fixed quote, typically ready within one working day.
How long does it take to clean an air handling unit?
It takes anything from half a day for one small unit to several shifts for a plant room full of them. Size, layout and how dirty it is decide the rest, and we will confirm the time when we quote.
What do you need from me for a quote?
The site address, the type of premises and your opening hours, plus pictures of the system and your last certificate or report if you have one.
What’s included in an AHU clean?
Everything inside the unit that air passes over, from the intake and filters through the coils and fan to the outlet. You get a photo report showing each part before and after.
What a clean will not put right
An honest diagnosis matters more to us than a booking, so here’s what AHU cleaning will not do:
- Mechanical faults with motors, belts or bearings
- Ventilation that was badly designed in the first place
- Leaking heating or cooling coils
If you’re not sure, just ring 0345 646 2711, or email photos and we’ll give you a straight answer.
What the work covers
- Heating and cooling coils
- Drain trays
- Supply and extract fans
- Filter sections
- Internal panels
- Dampers and louvres
Managing agents and facilities teams in Little Marlow
Keeping records across a portfolio is half the battle. Each visit produces a dated report with pictures, ready to show insurers, fire officers or EHOs.
Facilities teams in offices, schools and healthcare sites book us too across Buckinghamshire. Work can be phased by floor, building or site around the people who use them.
Nearby places to Little Marlow
What else we do in Little Marlow
AHU cleaning in Little Marlow: local notes
There are about 5 schools, colleges and universities, about 9 hospitals, care homes and childcare premises and about 3 hotels and B&Bs on the FSA’s food hygiene register within about 1.5 miles of central Little Marlow. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. Little Marlow, about 28 miles from central London, is within our usual area. A survey and a fixed quote come first, then the visit at a time that suits you. About 1.5 miles south-west of Little Marlow is Marlow Community Hospital, the nearest hospital. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too.
School buildings such as Little Marlow CofE School are usually done in the holidays, so classrooms aren’t disturbed.
Little Marlow is about 2 miles north-east of Marlow, in Buckinghamshire. Whether your site is in the middle of Little Marlow or further out, we cover AHU cleaning for every kind of premises, from small sites to large estates. Our Buckinghamshire coverage runs to 263 places, Little Marlow among them. For sites nearby, see our Reading page, about 14 miles away.
AHU cleaning in SL7 is surveyed, quoted and booked the same way as anywhere else. You will find streets such as Church Road, Pound Lane and School Lane, and we cover them all for AHU cleaning. Neighbouring places we cover for AHU cleaning include Fern (1 mile north-east), Coldmoorholme (1 mile east), Well End (1 mile east), Burroughs Grove (1 mile north-west) and Bourne End (1 mile east). Larger places within reach include High Wycombe (3 miles north), Chesham (10 miles north-east), Amersham (9 miles north-east), Beaconsfield (4 miles north-east), Chalfont St Peter (8 miles east) and Princes Risborough (10 miles north).
Local landmarks in Little Marlow
We work in commercial kitchens and buildings around The Queen's Head pub and Great Marlow School, among other places. Little Marlow’s nearest station is Bourne End station, roughly 1.4 miles east of the centre. Well-known places in the area include High Wycombe Castle (3.3 miles north) and Eden (3.2 miles north). For a walk, there’s Taplow Lake and Warren Nature Reserve.