Kent · Air handling unit cleaning
Air handling unit cleaning in Northwood, Kent
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces for commercial sites in Northwood and across Kent. CHAS, SafeContractor and ISO 9001, and fully insured.
- Condensate trays that won’t empty
- Dirty coils holding back the airflow
- Air handling units with blocked filters
AHU cleaning in Northwood
Units vary a lot in size, age and layout, from a small ceiling-mounted unit to a large rooftop plant. Every job starts with a survey, from pictures or on site, followed by a fixed quote before any cleaning starts. Typical jobs include dust built up on fan impellers and leaves and litter drawn into the unit, on filter sections, drain trays and internal panels.
In a place like Northwood, air handling units are often tucked into roof spaces or small plant rooms, where they’re easy to forget. Filters, coils and drain trays need attention whatever the size of the unit.
We have been trading since 2009, and we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we carry full insurance.
- Place
- Northwood (CT12, CT10, CT11)
- Region
- Kent
- Reporting
- Report and pictures after the visit
- Quote
- A fixed price before work begins
- Working hours
- Nights, weekends or holidays to suit you
- Call
- 0345 646 2711
- Last updated
- 30 October 2026
Part by part
Heating and cooling coils
Dirt on a coil slows the air and makes it harder for the coil to heat or cool. Cleaning restores the open path through the fins.
Filters
Clogged filters reduce airflow, and dirt can get round the edges. We clean the frames and rails so the filters sit tight.
The process
Your staff do not need to do much 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. In a smaller place like Northwood, parking is rarely the issue, but tell us about gates, roof access and opening hours.
- 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.
- We close up the unit and send the certificate and before and after photos.
Before we arrive
- Let us know about parking and loading
- Tell us about site rules, permits or sign-in
- Let us know how we reach the system, including roofs, risers and plant rooms
Ask for a quote
Getting a quote does not take long. Call or email with a few details and you will usually have a fixed price within one working day. If we need to see the system first, we book a survey around your hours.
Related advice
What affects the quote in Northwood
We don’t publish a price list, because sites vary so much. What we look at:
- The times the site is available
- Travel, parking and unloading
- Whether several sites go on one quote
- How easy every part is to reach
Leaving it longer rarely makes the work cheaper. Build-up, wear and faults tend to get worse, not better, and a neglected system can mean more work. If you are unsure, give us a ring on 0345 646 2711 or email us and we will give you an honest view and a fixed quote.
Asking for a quote
Before you ask for a quote, gather:
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- Where the site is and what kind of site it is
- Your last certificate, test record or report
- A few general shots of the system
We do not publish a price list, because every site is different. Instead, we look at your site first, from photos or a survey, and then send you a fixed quote. To start, ring 0345 646 2711, or send details by email.
Also near Northwood
More services for Northwood
AHU cleaning around Northwood
Going by the FSA’s register, there are about 31 schools, colleges and universities, about 24 care, childcare and hospital premises and about 3 hotels and guest houses serving food within about 1.5 miles of central Northwood. Busy, occupied buildings like these are where clean supply air matters most. About 1.6 miles south of Northwood is Ramsgate General Hospital, the nearest hospital. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes.
If you run a surgery, dental practice or care home near Northwood, clean ventilation matters as much to you as to a hospital like Ramsgate General Hospital (about 1.6 miles south). If you manage a school such as Dame Janet Primary Academy, ventilation cleaning is best booked for the holidays.
Northwood is about 1 mile north-west of Ramsgate, in Kent. We carry out AHU cleaning for businesses, landlords and public buildings in Northwood and the rest of Kent. Across Kent, we cover 922 places, Northwood among them. There’s also a page for Maidstone, about 38 miles away.
Here we cover the CT12, CT10 and CT11 postcode area for AHU cleaning. AHU cleaning is available to premises on Gwyn Road, Coxes Lane and Roman Road and nearby roads. Being close to the A254 and A256, Northwood is easy for our technicians to reach at any hour. Other places close to Northwood include Ramsgate (1 mile south-east), Upton (1 mile east), St Lawrence (1 mile south), St Peter's (1 mile north-east) and Broadstairs (1 mile north-east). Larger places within reach include Canterbury (15 miles west), Dover (15 miles south), Deal (9 miles south), Herne Bay (12 miles west), Walmer (10 miles south) and Wincheap (15 miles west).
Landmarks near Northwood
Around Northwood, our work takes us to kitchens and buildings near The Derby Arms, The Charles Dickens School and The Royal Harbour Academy. Northwood’s nearest station is Ramsgate station, roughly 0.8 miles south. Other landmarks nearby include Westwood Cross (0.5 miles north-west) and Ramsgate Museum (1.4 miles south-east). Open spaces near Northwood include Sandwich and Pegwell Bay.
Common questions in Northwood
Can you clean school ventilation in Northwood during the holidays?
Yes. Half-terms and the summer break are the natural time for school work. Food Standards Agency records list about 31 schools, colleges and universities with registered kitchens within about a mile and a half of Northwood. Just give us a ring on 0345 646 2711 or send us an email with your term dates and we will plan around them.
Do you work at weekends in Northwood?
Yes, nights and weekends are routine for us. Your customers, staff or residents in Northwood needn’t be disturbed. Just ring 0345 646 2711 or drop us a line with your opening times and we will plan around them.
What do you clean inside the unit?
Every section that collects dirt: filters, coils, tray, fan and panels. We confirm the scope after looking at the unit.
What types of premises do you cover?
We work for restaurants, pubs, hotels, schools, colleges, hospitals, care homes, offices and shops, as well as food production and leisure sites.
Do you do ventilation duct cleaning too?
Yes. Ventilation ductwork cleaning to TR19® Air is part of what we do. It’s often worth doing both at once, and we can quote for both.
How long does it take to clean an air handling unit?
The work takes from a few hours for a compact unit to a day or more for a large one. Bigger units can be phased, so call us on 0345 646 2711 or drop us a line to talk it through.
How much notice do you need?
That depends on the slot you want and the size of the job. Tell us your preferred dates when you ask for a quote, and for anything urgent, ring our 24/7 emergency line.
How do you keep the site clean during the work?
Floors and surfaces near the work are sheeted before any work starts, and waste is contained as we go. At the end, the area is cleaned down.
When to call us in Northwood
Filters that are not changed or cleaned on time clog up, cutting airflow and sometimes letting dirty air bypass them altogether. Then the rest of the unit takes the load.
If you notice any of these, it’s worth a diagnosis:
- Leaves and litter drawn into the unit
- Dirty fans and fan housings
- Blocked condensate drains and slimy trays
- Air handling units due a clean after building work
If you run an office near Ramsgate station, its supply ductwork can gather dust for years before anyone looks inside.
Before booking anyone
- Whether VAT is included
- Whether the price is fixed
- How areas they can’t reach will be recorded
- When the next visit should be, and why
When it’s something else
To be straight with you, some problems need a different fix:
- A system that is undersized for the building
- Breakdowns that need a mechanical engineer
- The supply and extract ducts, quoted separately
If you’re not sure, just call us on 0345 646 2711 or send us an email and we will give you a straight answer before booking.
Parts of the system we cover
- Internal panels
- Drain trays
- Filter sections
- Supply and extract fans
- Dampers and louvres
- Heating and cooling coils
Why act early in Northwood
Cleaning a unit while it only has light dust is quick. Years of build-up make the job longer and harder, particularly where damp has made it stick. A visit arranged in advance is far less disruptive than a callout on a busy day.
Every site is different, so we price each one individually. Size, access, the condition of the system and when we can work all play a part.
Why choose Duct Doctor in Northwood
- We diagnose before we treat
- Work around your opening hours, with 24/7 emergency cover
- In business since 2009
- Fixed quotes from a survey or photos
What staff can safely do
Some jobs should never be done in-house: entering ducts, working on fans, testing dampers and taking grease readings call for the right kit, training and safe access. That’s our job.
Your own staff can handle the daily basics: wiping canopies, washing grease filters and recording it in a log. Inside the ducts, risers and fan is specialist work, which is where we come in.