Surrey · Air handling unit cleaning
Air handling unit cleaning in Newdigate, Surrey
For AHU cleaning in Newdigate, one call is all it takes, from survey to sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.
- Blocked condensate drains and slimy trays
- Air handling units with blocked filters
- Stale or musty smells from the ventilation
How we handle AHU cleaning in Newdigate
Drain trays under cooling coils are meant to empty. If the outlet blocks, standing water and slime build up, in the airstream that feeds the building. Clearing and cleaning the tray is central to every AHU clean. The work covers heating and cooling coils, internal panels and drain trays, and common reasons people get in touch are dirty filters cutting the airflow and units needing a clean before a new tenant or handover.
In a village or hamlet like Newdigate, few buildings have mechanical ventilation, but where it’s fitted, it needs the same inspection and cleaning as anywhere.
Good records are part of the job. You get a written report with photos after every visit, covering the work done, any areas we couldn’t access and a recommended next date. Keep it with your fire safety records so it’s to hand when an insurer or inspector asks.
- Where
- Newdigate (RH5)
- Region
- Surrey
- Records
- Written report with photos
- Quote
- A fixed quote up front
- When we work
- Out of hours as standard, 24/7 emergency line
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
What AHU cleaning can’t fix
We won’t sell you work that doesn’t address the problem, so these are the things it won’t cover:
- Controls and BMS settings that run the unit
- Faulty motors, drives or bearings
- Leaking heating or cooling coils
Not sure which it is? You can phone us on 0345 646 2711 or use the quote form and we will tell you honestly.
Where we work
- Dampers and louvres
- Internal panels
- Heating and cooling coils
- Drain trays
- Supply and extract fans
- Filter sections
Managing agents and facilities teams in Newdigate
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, and that can be the employer, the owner, a landlord, a facilities manager or a managing agent. Where responsibility is shared, records matter even more.
What your team can do, and what needs us
When your team notices a problem between visits, such as dripping grease, a noisy fan, a smell or a filter that will not come clean, it’s best reported rather than tackled in-house. We can diagnose it and quote.
Staff cleaning and specialist work are not the same thing. A daily filter wipe and a weekly filter wash keep grease down at the front of the system, but they don’t reach the grease that builds up further in. That part needs specialist access and equipment.
When to call us in Newdigate
Whatever surrounds a building in Newdigate, 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 are most often called out for:
- Leaves and litter drawn into the unit
- Dirty fans and fan housings
- Dirty filters cutting the airflow
- Units needing a clean before a new tenant or handover
Langley Green Hospital, about 4.9 miles south-east, is the nearest hospital to Newdigate, and healthcare sites of every size need their supply air kept clean.
What to look for in a quote
- Whether a written report and photos are included
- What hours they’ll be on site
- Whether the figure could change on the day
- Whether they recommend a next date
Your questions about AHU cleaning in Newdigate
Can the work in Newdigate be done at night or at weekends?
Yes, out-of-hours work is a big part of what we do. It means the site in Newdigate keeps running as normal. Your opening times are the first thing we ask for.
Can you get to a site in Newdigate?
Yes. Villages and rural sites across the South East are part of our work, Newdigate included. The journey is planned ahead, so a few details about the route help.
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.
Will we get paperwork for the AHU clean?
Yes. A TR19® certificate and photo report are sent after the clean, with any faults we noticed.
Do you look at the system first?
Yes, always. We diagnose before we treat: the survey tells us what the system needs and how to reach it, and the quote is based on that.
How much notice should we give?
The more notice, the better, particularly for night and weekend visits. We usually quote within one working day, and there’s a 24/7 line for emergencies.
What about areas you can’t get to?
They’re listed in the report, never skipped quietly. You will know exactly which parts weren’t reached and why, and we can quote to improve the access.
Are you insured?
Yes. Duct Doctor is fully insured, and the details are available on request.
Also near Newdigate
More services for Newdigate
AHU cleaning in Newdigate: local notes
Newdigate’s nearest hospital, Langley Green Hospital, is about 4.9 miles south-east. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes. We cover Newdigate, about 24 miles from central London, as part of our work across London and the South East. Visits are booked around your hours, evenings and weekends included.
If you manage a school such as Newdigate CofE Endowed Aided Infant School, ventilation cleaning is best booked for the holidays.
Newdigate is about 5 miles south of Dorking, in Surrey. Anywhere in RH5, we cover AHU cleaning for commercial sites. Our Surrey coverage runs to 395 places, Newdigate among them. Our Guildford page covers sites nearby, about 14 miles away.
Work in RH5 is surveyed, quoted and booked the same way as anywhere else. We cover sites on Church Road, Underhill Road and Village Street and nearby roads. Close by, we work in Cudworth (1 mile east), Parkgate (1 mile north-east), Shellwood Cross (2 miles north), Russ Hill (2 miles south-east) and Nalderswood (3 miles north-east). We also work in nearby towns such as Guildford (14 miles north-west), Epsom (12 miles north), Horley (5 miles east), Redhill (7 miles north-east), Ewell (13 miles north) and Reigate (6 miles north-east).
What’s near Newdigate
Typical jobs here are in premises near Six Bells pub and Newdigate Brickworks and the streets around them. For rail, the closest station is Holmwood station, about 1.7 miles north-west of the centre. Other landmarks nearby include Langley Green Hospital (4.9 miles south-east) and Betchworth Castle (4.9 miles north). Not far away are Leith Hill and Vann Lake.
Fixed quotes for AHU cleaning in Newdigate
The survey tells us what the work involves. The main factors are:
- Working hours and out-of-hours timing
- Whether it’s a one-off visit or part of a schedule
- Travel, parking and unloading
- How big the system is
A single site or a whole portfolio, the quote is built the same way: the work involved, the access and the timing. You’ll have a fixed price before any work starts.
What to send for a quote
Photos let us diagnose from a distance. Try to include:
- A few general shots of the system
- Where the site is and what kind of site it is
- Any access panels or hatches you can see
- The roof, plant room or outside wall the system runs to
Quoting starts with a diagnosis, either from pictures and details you send or from a site visit. After that, you get a fixed price for the work so you know the cost before any work starts.
How the job changes from site to site
Internal casing and panels
The inside walls and floor of the casing collect dust and debris. Each section is cleaned from the intake through to the outlet.
Heating and cooling coils
Heating and cooling coils have tightly packed fins that trap fine dust. We clean them with care so the fins are not damaged.
How the visit works
Before we leave, we walk the area with whoever is on site. Anything we couldn’t reach or that needs attention is pointed out there and then, and the same goes into the written report. The visit 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 Newdigate.
- 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.
- Coils and trays are cleaned and the condensate drain cleared.
- We close every panel, hand the unit back and send the report and certificate.
Before we arrive
- Plan for cooking equipment or plant to be off before we arrive
- Mention any locked doors, roof access or ceiling voids
- Move anything stored near the system
How to get a quote
Some systems can be priced from pictures; others need a survey. Big or complicated sites, and systems that are hard to see in pictures, get a survey first. Either way, the quote is fixed before any work is booked.