Isle of Wight · Air handling unit cleaning

Colwell AHU cleaning

AHU cleaning for businesses, landlords and public buildings in Colwell. CHAS, SafeContractor and ISO 9001, and fully insured.

  • Dirty filters cutting the airflow
  • Dirty fans and fan housings
  • Blocked condensate drains and slimy trays

AHU cleaning near Colwell

What happens on the day

We turn up at the time agreed with you, which is often after service, overnight or at a weekend. Anything that needs to be off for the work is switched off and left to cool before we start, and the area around the work is covered and protected. The work itself takes from a few hours for a compact unit to a day or more for a large one. In a small place like Colwell, the journey is planned ahead and the visit arranged around the site’s hours.

  1. First the unit is surveyed, from photos or a visit, and the scope agreed.
  2. The unit is shut down with your site team and the area protected.
  3. Filters, coils, fan section and casing are cleaned in turn.
  4. Drain trays are cleared and cleaned and the outlet checked.
  5. We close up the unit and send the certificate and before and after pictures.

How to prepare

  • Mention any parking or loading restrictions
  • Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
  • Move anything stored near the system

Getting a quote

Quoting starts with a diagnosis, from your pictures and details or, where that is not enough, a survey on site. After that, you get a fixed price for the work so you know the cost before work begins.

Get a price

Read more

AHU cleaning for kitchens and businesses in Colwell

An AHU clean is a thorough examination and treatment of the unit. Every section is opened, cleaned and photographed, so you can see the unit’s condition for yourself. Common call-outs are for dust-coated heating and cooling coils and units that have only ever had filter changes, on internal panels, filter sections and supply and extract fans.

Work in a small place like Colwell starts with agreeing access and timings, and the ventilation is inspected, cleaned and recorded the same as anywhere.

We are CHAS and SafeContractor accredited, we hold ISO 9001 and we’re fully insured. We are also a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we’ve been trading since 2009.

Location
Colwell (PO40, PO39)
Wider area
Isle of Wight
Records
Photo report after every visit
Price
A fixed quote up front
Hours
Overnight and weekend work, 24/7 emergency callout
Telephone
0345 646 2711
Updated
30 October 2026
The Duct Doctor team standing beside their branded white and blue vans

What happens if it’s left?

Cleaning a unit while it only has light dust is quick. Years of build-up make the job longer and harder, especially where there’s been moisture. A planned visit to Colwell is easier to arrange than an emergency callout.

Putting the work off seldom saves money. Build-up, wear and faults tend to get worse, not better, and a neglected system can mean more work. If you’re not sure what’s needed, call us on 0345 646 2711 or send us an email and we will give you an honest view and a fixed quote.

What you get with us

  • A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
  • CHAS and SafeContractor accredited, with ISO 9001
  • A written report with photos after each visit
  • Out-of-hours work and a 24/7 emergency line

Take a look at what affects the cost and how to check a contractor.

When it’s something else

A few issues sit outside what this work can do:

  • Mechanical faults with motors, belts or bearings
  • Coils that are corroded or leaking and need replacing
  • Ductwork downstream of the unit, which is a separate clean

If you are not sure, just call 0345 646 2711, or send details by email and we’ll give you a straight answer.

Where we work

  • Drain trays
  • Filter sections
  • Supply and extract fans
  • Dampers and louvres
  • Internal panels
  • Heating and cooling coils

AHU cleaning around Colwell

Food Standards Agency records list about 10 caring premises (care homes, nurseries and hospitals) and about 4 hotels and guest houses registered as food businesses in Colwell and the streets around it, up to about 1.5 miles out. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. Colwell’s nearest hospital, Lymington New Forest Hospital, is about 5.7 miles north. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too.

If you manage a school such as All Saints Church of England Primary School, ventilation cleaning is best booked for the holidays.

Colwell is about 5 miles south of Lymington, in the Isle of Wight. Wherever you are in the PO40 postcode area, we cover AHU cleaning for commercial sites. We cover 125 places across the Isle of Wight, large and small. Our Southampton page covers sites nearby (17 miles or so).

AHU cleaning in PO40 and PO39 follows the same survey, fixed quote and written report as everywhere else we cover. Streets in the area include Colwell Chine Road, Heath Lane and Chine Close, all of which we cover for AHU cleaning. Nearby, we also carry out AHU cleaning in Totland (1 mile south-west), Freshwater (1 mile south-east), Norton Green (1 mile north-east), Easton (1 mile south-east) and Afton (1 mile south-east). Further out, we also cover Newport (10 miles east), Cowes (11 miles north-east), East Cowes (12 miles north-east), Barton (11 miles east), Hunny Hill (10 miles east) and Cross Lane (11 miles east). Island and remote sites take a little more planning, so tell us where you are when you ask for a quote for AHU cleaning.

Landmarks near Colwell

Locally, jobs take us to businesses close to Colwell Bay Inn, among other places. Colwell’s nearest station is Lymington Pier station, about 4.9 miles north. Nearby you’ll also find Lymington New Forest Hospital (5.7 miles north) and Ferguson Family Museum (1.1 miles east). Green spaces nearby include Tennyson Down and Lymington and Keyhaven Marshes Nature Reserve.

Map of Colwell © OpenStreetMap contributors

When to call us in Colwell

Filters catch most of the dust, but not all of it. What gets through settles on coils, fans and the inside of the casing, a little more each month.

If you notice any of these, it’s worth a diagnosis:

  • Plant that has been serviced but not cleaned
  • Units needing a clean before a new tenant or handover
  • Filters that are clogged or overdue
  • Dust built up on fan impellers

Hospitals such as Lymington New Forest Hospital (about 5.7 miles north) show how much a building can rely on clean ventilation, and smaller healthcare sites near Colwell are no different.

What your quote should include

  • Proof of insurance
  • What happens if part of the system cannot be accessed
  • Which accreditations they hold, and whether you can check them
  • Whether a written report and photos are included

Choosing a duct cleaning contractor

Landlords, agents and facilities managers

Multi-site operators often want one contractor and one number. We cover South East England and London, so a run of sites can go into one programme and kept on a regular cycle.

Landlords, managing agents and facilities managers book us, not only the businesses that use the systems. Where a system serves more than one tenant, such as a shared riser, it helps to agree who arranges the work, and we can quote for the whole system.

Between visits

Results last longer with the right care. Here’s what we suggest:

  • Make sure condensate is draining away
  • Report stiff or damaged access doors
  • Store the TR19 paperwork where auditors can find it
  • Report water on the plant room floor

Restart the unit with your site team or maintenance contractor once we’ve finished. Check the drain tray is emptying over the first few days to make sure it stays clear.

Make sure access doors and panels on the unit open easily. If a section is hard to get into, it tends not to get checked.

Different parts, different methods

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

Every AHU relies on its filters to catch dust before it reaches the coils. We check them, and clean or change them as agreed in the quote, and the housing around them is cleaned too.

Questions from Colwell

Can the work in Colwell be done at night or at weekends?

Yes, evening, overnight and weekend work is normal for us. Your customers, staff or residents in Colwell needn’t be disturbed. When you phone us on 0345 646 2711, or email photos, mention when the site is quiet.

Do you do school ventilation cleaning in Colwell in the summer holidays?

Yes. The holidays are the usual time for school work. Around Colwell, the Food Standards Agency lists about 2 schools and colleges with registered kitchens within a mile and a half or so. Just give us a ring on 0345 646 2711 or drop us a line with your term dates and we’ll plan around them.

Are you accredited?

We are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.

How do you protect the area?

We start with protection: floor sheeting and covers over nearby surfaces and equipment. The area is left tidy, with our waste taken away.

What happens to the waste?

Anything we remove is contained as we work and taken away with us, including grease, debris and dirty water. None of it is left on site.

Do you have insurance?

Yes. Full insurance covers our work and have been trading since 2009.

Do you need to switch the unit off?

Yes, for the time we’re working on it. We can work evenings, overnight or at weekends to keep disruption down.

Will you repair the fan or motor?

AHU cleaning is what we offer here, not mechanical repairs. Any faults we notice are recorded so your maintenance contractor can deal with it.

BESCA Vent Hygiene EliteMember, cleaning to BESA TR19® Grease
CHAS · SafeContractorISO 9001 and fully insured
Certificate and photo reportWith every clean
24/7 emergency calloutEvenings, nights and weekends
Since 2009South East England and London