Surrey · Air handling unit cleaning
Send Marsh AHU cleaning
AHU cleaning for Send Marsh, with a survey first and a report with pictures at the end. Ask us for a fixed quote.
- Blocked condensate drains and slimy trays
- Fan sections that haven’t been cleaned in years
- Air handling units with blocked filters
Aftercare tips
Good habits slow the build-up between visits. Our tips:
- Stick to the filter change plan
- Book the next check in line with the report
- Make sure condensate is draining away
- Don’t ignore odours coming through the grilles
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.
Change or clean filters on time. Overloaded filters let more dirt through to the coils and fan.
About our AHU cleaning in Send Marsh
An air handling unit is the heart of a building’s ventilation: air is pulled in, filtered, conditioned and sent out through the ducts. Anything that collects inside the unit can end up in the rooms it serves, so cleaning the unit matters as much as cleaning the ducts. If you are dealing with dust-coated heating and cooling coils and leaves and litter drawn into the unit, we can help, from filter sections, heating and cooling coils and dampers and louvres onwards.
Rural buildings with mechanical ventilation, such as care homes and country hotels, often keep their units in roof spaces or outbuildings, where filters and drain trays get forgotten.
For insurers and inspectors, the record counts. So every job comes with a written report and photos, and grease extract cleans come with a TR19® certificate issued through the BESCA Vent Hygiene Elite portal.
- Place
- Send Marsh (GU23)
- Wider area
- Surrey
- Reporting
- Written report with photos
- Quote
- A fixed quote up front
- Working hours
- Nights, weekends or holidays to suit you
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
How the visit works
Night work is normal for us. Evenings, nights and weekends are when much of our work happens, so a kitchen or building can carry on as usual the next day. On site, the work takes half a day to a full day per unit, with large plant planned over several shifts. A few pictures of the system help us make the most of a visit to a place like Send Marsh.
- The survey covers the unit, its access and how it can be shut down.
- The area is protected and the unit made safe.
- Each section is cleaned of dust, debris and slime.
- We clean the coils and clear the tray and drain.
- The unit is closed up and handed back, with a report to follow.
How to prepare
- Agree a time when the area can be out of use
- Plan for cooking equipment or plant to be off before we arrive
- Let us know how we reach the system, including roofs, risers and plant rooms
How to get a quote
Quoting starts with a diagnosis, either from photos and details you send or from a site visit. After that, you get a fixed price for the work, before we start.
Advice
What AHU cleaning cannot fix
It’s worth knowing the limits before booking:
- Faulty motors, drives or bearings
- Damaged coils beyond cleaning
- 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 you book.
What the work covers
- Dampers and louvres
- Heating and cooling coils
- Internal panels
- Filter sections
- Supply and extract fans
- Drain trays
Why deal with it now?
A clean unit feeds cleaner air into the ductwork, so the whole system stays cleaner for longer. That makes the next inspection of a building in Send Marsh simpler. It’s simpler to plan the work at Send Marsh now than to arrange it in a hurry later.
No two sites are the same, so we price each one individually. The size of the job, how we reach it, its condition and the working hours all make a difference.
Why Send Marsh businesses choose us
- We diagnose before we treat
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- A fixed price before any work starts
- Trading since 2009
Managing agents and facilities teams in Send Marsh
Running several sites is easier with one contractor. We cover South East England and London, so visits at different addresses can be planned together and kept to a regular schedule.
Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person must assess and reduce fire risk, which may be the employer, owner, landlord, FM or managing agent. Where responsibility is shared, records matter even more.
Questions from Send Marsh
Do you cover smaller places like Send Marsh?
Yes, we work in villages as well as towns, and Send Marsh is covered. The journey is planned ahead, so a few details about the route help.
Do you do school ventilation cleaning in Send Marsh in the summer holidays?
Yes, and it’s the easiest time to do it. With about 2 schools and colleges on the FSA’s register within roughly a mile and a half of Send Marsh, it pays to plan holiday dates ahead. Send us your term dates when you phone us on 0345 646 2711 or use the quote form, and we’ll fit the work in.
Do you work evenings or weekends?
Yes. Evening, overnight and weekend work is all possible, so offices, schools and shops can carry on.
What types of premises do you cover?
Any commercial site with kitchens or ventilation, from a small pub to a hospital. Hotels, schools, care homes, offices, shops and leisure sites are all part of our work.
How much does AHU cleaning cost?
The cost depends on the size of the system, its condition, access and timing. Ask us for a fixed quote, normally ready within one working day.
Are you insured?
Yes. Duct Doctor is fully insured, and the details are available on request.
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 do you protect the area?
We cover floors and nearby surfaces with sheeting before work begins, and waste is contained as we go. Before we leave, we tidy up and clean down.
Also near Send Marsh
Other services in Send Marsh
How the job changes from site to site
Drain trays
Drain trays can rust and leak over time. We record their condition with pictures so you can decide on any repairs.
Filters
Clogged filters reduce airflow, and dirt can get round the edges. We clean the frames and rails so the filters sit tight.
When to call us in Send Marsh
No filter stops everything. The fine dust that passes the filters lands on the coils, the fan and the internal panels, a little more each month.
Signs it’s time to call us include:
- Dirty filters cutting the airflow
- Blocked condensate drains and slimy trays
- Dirty fans and fan housings
- Air handling units due a clean after building work
Wherever a school like Send CofE Primary School has ducted ventilation, a half-term visit keeps the work out of lesson time.
Before booking anyone
- Whether a written report and photos are included
- Whether the figure could change on the day
- What insurance they carry
- Whether a survey comes first
Ventilation in Send Marsh buildings
About 2.6 miles north-west of Send Marsh is Woking Community Hospital, the nearest hospital. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes. We cover Send Marsh, about 23 miles from central London, as part of our work across London and the South East. Evening, overnight and weekend visits are all possible.
Healthcare buildings such as Woking Community Hospital, about 2.6 miles north-west, depend on their ventilation; if you manage a surgery, clinic or care home near Send Marsh, yours matters too.
Send Marsh is about 3 miles south-east of Woking, in Surrey. Every kind of commercial site in Send Marsh, we can take on AHU cleaning. We can work out of hours so the site keeps running. Send Marsh is one of 395 places in Surrey we cover for AHU cleaning.
We work across the GU23 postcode area for AHU cleaning and the streets around it. If you need AHU cleaning at premises on Send Marsh Road, Tuckey Grove and Stringhams Copse or anywhere close by, we can help. Main roads around Send Marsh include the B368, which makes travel easy for evening and night visits. We also cover the places around Send Marsh: Burntcommon (1 mile south), Send (1 mile west), West Clandon (2 miles south), Sutton Green (2 miles west) and Mayford (2 miles west). Within a short drive, we also cover Guildford (4 miles south-west), Woking (3 miles north-west), Camberley (10 miles west), Epsom (11 miles east), Redhill (15 miles east) and Farnham (13 miles south-west).
What’s near Send Marsh
In Send Marsh, that means kitchens and buildings near The Jovial Sailor pub, St John the Baptist Catholic Comprehensive School and Ripley Court School, among other places. For rail, the closest station is Clandon station, about 1.8 miles south. A little further out are Send and Ripley History Society Museum (1 mile north-east) and Guildford Castle (4.7 miles south-west). Open spaces near Send Marsh include Boldermere Lake and St Martha's Hill.