Surrey · Air handling unit cleaning
Nalderswood AHU cleaning
AHU cleaning for Nalderswood, from a team that has been trading since 2009. Out-of-hours visits and 24/7 emergency callout.
- Odours coming through the supply air
- Units needing a clean before a new tenant or handover
- Dirty fans and fan housings
AHU cleaning in Nalderswood, done properly
An air handling unit is the heart of a building’s ventilation: it draws air in, filters it, heats or cools it and pushes it round the ductwork. 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. The work covers supply and extract fans, internal panels and drain trays, and the jobs we see most are stale or musty smells from the ventilation and leaves and litter drawn into the unit.
Work in a small place like Nalderswood starts with agreeing access and timings.
Good records are part of the job. You get a written report with pictures after each 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 ready for an insurer, fire officer or EHO.
- Where
- Nalderswood (RH2)
- Wider area
- Surrey
- Reporting
- Written report with photos
- Price
- A fixed price before work begins
- When we work
- Out of hours as standard, 24/7 emergency line
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
How the visit works
At the end of the visit, someone from your team can look over the work with us. Anything we couldn’t reach or that needs attention is pointed out there and then, and it goes on the report too. All told, the work takes from a few hours for a compact unit to a day or more for a large one. A quick note on how to find the site and where to park makes a visit to Nalderswood run smoothly.
- The survey covers the unit, its access and how it can be shut down.
- We sheet the area and the unit is isolated.
- Dirt and debris are removed from each section.
- We clean the coils and clear the tray and drain.
- We close every panel, hand the unit back and send the report and certificate.
Before we arrive
- Arrange a key holder or contact on site
- Clear the space around the work
- Let us know how we reach the system, including roofs, risers and plant rooms
Ask for a quote
If you need AHU cleaning in Nalderswood, ring 0345 646 2711, or send details by email. Let us know the site type and the opening hours, plus pictures or the previous report if they’re to hand. A fixed quote usually follows within one working day.
Advice
Aftercare tips
A little care between visits keeps the system in better shape. We recommend:
- Do not store bins or materials near the intake
- Report water on the plant room floor
- Stick to the filter change plan
- Keep inspection doors on the unit in good order
Once the clean is done, we send a TR19® certificate and a report with before and after photos. Keep both with the building’s maintenance records.
Regular inspection under TR19® Air shows when cleaning is due, rather than waiting for a problem.
When to call us in Nalderswood
Planned maintenance often covers belts, motors and filters but not cleaning. That means a unit can tick every service box and still be carrying years of dirt.
Common reasons sites call us include:
- Air handling units due a clean after building work
- Debris and leaves in the fresh air intake
- Drain trays holding standing water
- Fan sections that haven’t been cleaned in years
Healthcare ventilation, from large hospitals like East Surrey Hospital (about 3.7 miles north-east) to small clinics, depends on clean filters, coils and ducts.
What to look for in a quote
- If they look at the system before pricing
- What’s included in the scope, part by part
- Whether the work can be done while the site is closed
- Which accreditations they hold, and whether you can check them
Places near Nalderswood
More services for Nalderswood
Leave it or put it right?
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 Nalderswood simpler. In a small place like Nalderswood, a system that fails can take a site out of use.
Working hours, access and the scale of the site all affect the cost. Each of those is built into the quote and give you a fixed price before work begins.
What you get with us
- We are fully insured
- One number for every site across the South East and London
- CHAS and SafeContractor accredited, with ISO 9001
- Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
See what affects the cost and our accreditations.
Part by part
Heating and cooling coils
A dirty coil holds back the air and makes heating and cooling less effective. Cleaning restores the open path through the fins.
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.
Nalderswood: your questions answered
Do you clean school ventilation in Nalderswood in the holidays?
Yes, holiday work suits schools best. There are about 2 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Nalderswood. You can call us on 0345 646 2711 or send us an email with the dates the site is empty.
Do you work at weekends in Nalderswood?
Yes, nights and weekends are routine for us. The work in Nalderswood can fit around your hours. Tell us your opening hours when you ask for a quote.
Can you look after several sites?
Yes. Send the list of sites and the work at each and we’ll quote them together.
Do you work in Nalderswood?
Yes. Our area takes in London and the counties of South East England, Nalderswood included.
What do you need from me for a quote?
Where the site is, what it is and when it’s open, plus pictures of the system and your last certificate or report if you have one.
What is TR19?
It’s BESA’s specification and the benchmark insurers, fire officers and EHOs look to. It sets out inspection, cleaning and record keeping, and it takes a risk-based approach.
What do you clean inside the unit?
Filters, coils, drain trays, the fan and the internal surfaces are all covered. What happens to the filters is agreed when we quote.
What if parts of the system can’t be reached?
We record them on the report, with a note of where it is, and we tell you what would make it reachable, such as extra access panels in ductwork.
Staff cleaning versus specialist work
In-house cleaning and specialist cleaning do different jobs. Wiping filters daily and washing them weekly keeps the visible parts in order, but they do not reach the grease that builds up further in. That part needs specialist access and equipment.
Logging matters as much as cleaning. A simple log of filter washes, wipe-downs and checks helps show that the system is managed between specialist visits, alongside our reports.
Nalderswood buildings and their air
We cover Nalderswood, about 22 miles from central London, as part of our work across London and the South East. The visit is fixed around your opening hours, not ours. Nalderswood’s nearest hospital, East Surrey Hospital, is about 3.7 miles north-east. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
If you manage a school such as Burys Court School, ventilation cleaning is best booked for the holidays.
Nalderswood is about 3 miles west of Horley, in Surrey. Whether your site is in the middle of Nalderswood or further out, AHU cleaning is available to all kinds of commercial premises, from small sites to large estates. Nalderswood is one of 395 places in Surrey where we work for commercial clients. Guildford is in our area too, about 15 miles from Nalderswood.
AHU cleaning in RH2 is surveyed, quoted and booked the same way as anywhere else. Streets in the area include Smalls Hill Road and Deanoak Lane, and we cover them all for AHU cleaning. Other places close to Nalderswood include Norwood Hill (1 mile south-east), Shellwood Cross (1 mile west), Parkgate (2 miles south-west), Cudworth (2 miles south-west) and Charlwood (3 miles south). Further out, we also cover Guildford (15 miles west), Epsom (10 miles north), Horley (3 miles east), Redhill (4 miles north-east), Ewell (11 miles north) and Reigate (3 miles north-east).
Local landmarks in Nalderswood
Typical jobs here are in premises near Edolph's Copse. Nalderswood’s nearest station is Salfords station, about 3.4 miles east. Nearby you will also find Reigate Priory Museum (3.3 miles north-east) and East Surrey Hospital (3.7 miles north-east). Open spaces near Nalderswood include Reigate Heath and Colley Hill.
How we price AHU cleaning
The survey tells us what the work involves. The main factors are:
- Travel, parking and unloading
- Any permits to work or inductions
- Whether it’s a one-off visit or part of a schedule
- Whether we need access equipment or extra panels
A single site or a whole portfolio, we price it on the same basis: the work involved, the access and the timing. The price is fixed before we start.
What we need to know
A few details help us quote accurately. When you get in touch, it helps to send:
- The roof, plant room or outside wall the system runs to
- Any access panels or hatches you can see
- When the site is open and when it’s quiet
- Wide pictures of the system and the area around it
Here’s what helps us quote: where the site is, what it is and its opening hours, a few pictures and any previous report or certificate. Once you have those, give us a ring on 0345 646 2711, or email photos.