West Sussex · Air handling unit cleaning
AHU Cleaning in Plummers Plain
AHU cleaning for Plummers Plain and the surrounding area: a survey, a fixed price, careful work and proper paperwork. Call for a fixed quote.
- Air handling units never cleaned inside
- Dirty filters cutting the airflow
- Air handling units due a clean after building work
Landlords, agents and facilities managers
We work for landlords, managing agents and facilities managers as well as the people running the site. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we’re happy to quote for all of it.
Where a tenant occupies the premises but the landlord owns the building, it’s worth checking the lease for who maintains the systems. We’re happy to deal with either side and send the paperwork to whoever needs it.
How we handle AHU cleaning in Plummers Plain
We clean the parts of the unit where dirt and moisture gather: the filter section, heating and cooling coils, drain trays, fan and casing. Every clean comes with a TR19® certificate and before and after pictures in a report. The work covers heating and cooling coils, internal panels and supply and extract fans, and common reasons people get in touch are plant that needs cleaning after a refit and dirty fans and fan housings.
Rural buildings with mechanical ventilation, such as care homes and country hotels, often keep their units in roof spaces or outbuildings, which makes them easy to overlook.
The sign-off is always in writing: a written report, dated and illustrated with pictures, and for TR19® Grease cleans, a certificate issued through the BESCA VHE portal. It shows what was done and what, if anything, couldn’t be reached.
- Where
- Plummers Plain (RH13)
- Wider area
- West Sussex
- Paperwork
- Photo report after every visit
- Quote
- A fixed quote up front
- When we work
- Evenings, overnight and weekends; 24/7 emergencies
- Call
- 0345 646 2711
- Reviewed
- 30 October 2026
Places near Plummers Plain
More services for Plummers Plain
What affects the cost of AHU cleaning
You will get a fixed price before any work starts. It’s based on:
- The condition we find in the survey
- How easy every part is to reach
- A single visit or a regular plan
- Site requirements such as sign-in and permits
Several systems or sites on one quote often makes better use of the time. Tell us about everything you’d like looked at, and you will get one fixed quote.
Asking for a quote
To help us quote quickly, send us:
- Any previous report or certificate
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- Where the site is and what kind of site it is
- Photos showing the whole system and its surroundings
Quoting starts with a diagnosis, from your photos and details or, where that is not enough, a survey on site. After that, you get a fixed price for the work, before work begins.
Ventilation in Plummers Plain buildings
We cover Plummers Plain, about 32 miles from central London, as part of our work across London and the South East. We work evenings, overnight and at weekends, so the visit fits around the site. For Plummers Plain, the closest hospital is Horsham Hospital, roughly 4.4 miles north-west. Clean air matters most where people are unwell, and that’s as true in a care home as in a hospital.
Hospitals such as Horsham Hospital (about 4.4 miles north-west) show how much a building can rely on clean ventilation, and smaller healthcare sites near Plummers Plain are no different.
Plummers Plain is about 4 miles east of Horsham, in West Sussex. Across the RH13 area, we can take on AHU cleaning. Plummers Plain is one of 371 places in West Sussex where we work for commercial clients. Our Brighton page covers sites nearby, about 15 miles away.
Every address in RH13 is covered for AHU cleaning, from the main roads to the quietest streets. We cover sites on Handford Way, Handcross Road and Hammerpond Road and nearby roads. We also cover the places around Plummers Plain: Slaugham (1 mile east), Lower Beeding (1 mile south-west), Handcross (2 miles north-east), Mannings Heath (2 miles west) and Crabtree (2 miles south-west). Further out, we also cover Crawley (5 miles north-east), Horsham (4 miles west), Haywards Heath (7 miles south-east), Burgess Hill (8 miles south-east), East Grinstead (11 miles north-east) and Shoreham-by-Sea (14 miles south).
Around Plummers Plain
Locally, jobs take us to businesses close to The Wheatsheaf pub and the streets around them. The closest station to Plummers Plain is Faygate station, roughly 3.8 miles north of the centre. Well-known places in the area include Horsham Hospital (4.4 miles north-west). The countryside around Plummers Plain includes Tilgate Lake and Warnham LNR.
Common problems we fix in Plummers Plain
Whatever surrounds a building in Plummers Plain, 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 the finer material travels on.
These are the problems we see most often:
- Coils clogged with dust and debris
- Dirty filters cutting the airflow
- Drain trays holding standing water
- Units needing a clean before a new tenant or handover
Classrooms and halls at schools such as Newells Preparatory School are easiest to work in when pupils are away.
What your quote should include
- When they can work, and whether that’s outside your opening hours
- Proof of accreditation you can verify
- If they look at the system before pricing
- Whether the figure could change on the day
The process
There’s very little for your team to do on the day. Someone lets us in at the agreed time and shows us where everything is, and the rest is down to us. Afterwards, the area is left tidy and the written report follows. For a village or hamlet like Plummers Plain, tell us about narrow lanes, gates and parking when you book.
- We start with a survey of the unit and a fixed quote for the work.
- The unit is shut down with your site team and the area protected.
- Filters, coils, fan section and casing are cleaned in turn.
- We clean out the drain tray and make sure it drains.
- A TR19® certificate and photo report follow the clean.
Before we arrive
- Tell us where we can park and unload
- Arrange a key holder or contact on site
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
Ask for a quote
There’s no standard price list, because no two systems are the same. We look at your system first, from photos or on a visit, then send a fixed quote. To get going, ring 0345 646 2711 or send us an email.
Advice
Your questions about AHU cleaning in Plummers Plain
Do you work in villages like Plummers Plain?
Yes, smaller places are covered as well as towns. Photos of the system and directions to the site help us plan the visit.
Can you work in Plummers Plain outside opening hours?
Yes, evening, overnight and weekend work is normal for us. The work in Plummers Plain can fit around your hours. Your opening times are the first thing we ask for.
What is TR19?
It’s the industry benchmark for cleaning ventilation and kitchen extract systems, written by BESA. It sets out inspection, cleaning and record keeping, and it takes a risk-based approach.
Do you survey before quoting?
Yes, always. We diagnose before we treat: the survey shows what needs doing and what access we need, and the quote is based on that.
How far ahead should we book?
Earlier is better, particularly for night and weekend visits. We typically quote within one working day, and there’s a 24/7 line for emergencies.
Which accreditations do you hold?
Duct Doctor is 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.
Can you come out in an emergency?
Yes, any time. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line and we will talk you through the next steps.
Can you clean the ducts connected to the AHU?
Yes, supply and extract ducts, grilles and diffusers. We will tell you after the survey whether the ducts need it.
What staff can safely do
Day-to-day cleaning is something your team can do: wiping canopies, washing grease filters and recording it in a log. What they cannot safely do is clean inside the ductwork, the fan or the risers, and that is where we come in.
Logging matters as much as cleaning. A dated log of in-house cleaning and checks helps show that the system is managed between specialist visits, alongside our reports.
Honest limits
We’d rather tell you now than book work that will not help, so these are the things it won’t cover:
- Problems with the unit’s controls or sensors
- Dirty ducts beyond the unit itself
- Damaged coils beyond cleaning
If you’re not sure, just call 0345 646 2711 or drop us a line and we will give you a straight answer.
Parts of the system we cover
- Internal panels
- Filter sections
- Dampers and louvres
- Heating and cooling coils
- Drain trays
- Supply and extract fans
Keeping the system healthy
Looking after the system between visits is straightforward, and it helps at the next visit:
- Keep inspection doors on the unit in good order
- Look at the condensate drain whenever the unit is serviced
- Don’t store bins or materials near the intake
- Note any water around the unit or leaks below it
Stick to the filter change schedule, as that does more than anything to keep the unit clean. Record each change in the maintenance log.
Have the unit inspected regularly, in line with the risk-based approach of TR19® Air, rather than waiting for a problem.