Hampshire · Air handling unit cleaning
AHU Cleaning in North Fareham
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces for commercial sites in North Fareham and across Hampshire. CHAS, SafeContractor and ISO 9001, and fully insured.
- Dust built up on fan impellers
- Air handling units never cleaned inside
- Dirty coils holding back the airflow
What staff can safely do
Some jobs should never be done in-house: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease need training, the right equipment and safe access. That is our job.
Your own staff can handle the daily basics: wiping canopies, washing grease filters and recording it in a log. What they can’t safely do is clean inside the ductwork, the fan or the risers, and that is where we come in.
AHU cleaning in North Fareham, done properly
Our AHU cleaning covers sites in North Fareham and the rest of Hampshire, in buildings such as offices, schools, healthcare sites and shops. The work is timed around when the system can be switched off, including evenings, nights and weekends. Typical jobs include dirty coils holding back the airflow and units needing a clean before a new tenant or handover, on drain trays, internal panels and dampers and louvres.
For a building in or near North Fareham, access is agreed in advance and the visit is planned around the journey, and the ventilation is inspected, cleaned and recorded the same as anywhere.
Duct Doctor has 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’re fully insured.
- Location
- North Fareham (PO17)
- Region
- Hampshire
- Reporting
- Written report with pictures
- Quote
- Fixed quote, usually within a working day
- When we work
- After hours by arrangement; emergencies any time
- Call
- 0345 646 2711
- Reviewed
- 30 October 2026
Your questions about AHU cleaning in North Fareham
Can the work in North Fareham be done at night or at weekends?
Yes, we can come after you close and finish before you open. It means the site in North Fareham keeps running as normal. Just ring 0345 646 2711 or send us an email with your opening times and we will plan around them.
Can you clean school ventilation in North Fareham during the holidays?
Yes, holiday work suits schools best. Around North Fareham, the Food Standards Agency lists about 10 schools and colleges with registered kitchens within a mile and a half or so. Just phone us on 0345 646 2711 or use the quote form with your term dates and we’ll plan around them.
How much does AHU cleaning cost?
It depends on the site, so we quote each one individually. To get one, call 0345 646 2711 or email us and tell us about the site and its opening hours.
What about areas you cannot 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.
How much notice should we give?
It depends on the time you need and how big the job is. Mention your preferred dates with your enquiry, and if it’s an emergency, call us any time.
How do you keep the site clean during the work?
We start with protection: floor sheeting and covers over nearby surfaces and equipment. The area is left tidy, with our waste taken away.
How long does it take to clean an air handling unit?
Typically the clean takes one overnight shift for many single units, with bigger plant phased. The shutdown is planned to fit, including evenings or weekends.
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 expects a risk-based approach.
Towns and villages near North Fareham
Also in North Fareham
What we are called out for in North Fareham
No filter stops everything. What gets through settles on coils, fans and the inside of the casing, a little more each month.
Any of these means the system needs a check-up:
- Units needing a clean before a new tenant or handover
- Stale or musty smells from the ventilation
- Filters that are clogged or overdue
- Intake sections clogged with outdoor debris
Knowle Hospital, about 1.6 miles north-west, is the nearest hospital to North Fareham, and healthcare sites of every size need their supply air kept clean.
Questions to ask before booking
- Exactly which parts of the system are covered
- What happens if part of the system cannot be accessed
- Whether the quote shows VAT
- Proof of insurance
How it works
On the day, we arrive at the time agreed with you, which is often after service, overnight or at a weekend. Equipment that has to be off is switched off and allowed to cool first, and floors and nearby surfaces are sheeted. On site, it takes one overnight shift for many single units, with bigger plant phased. Seeing the system in pictures first means the trip to North Fareham can be planned properly.
- We look at the unit and the plant area during the survey.
- The area is protected and the unit made safe.
- Each section is cleaned of dust, debris and slime.
- We clean the coils and clear the tray and drain.
- The unit is closed up and handed back, with a report to follow.
How to prepare
- Mention any sign-in, permit or induction we need
- Dig out any earlier paperwork for the system
- Agree a time when the area can be out of use
How to get a quote
Need a price for AHU cleaning? Please ring 0345 646 2711, or email photos with a few details about the site. We will talk you through the work and give you a fixed quote before you commit to anything.
Read more
What happens if it’s left?
A clogged coil or dirty fan makes the unit work harder for the same airflow. That means more wear on the motor and rooms that feel less fresh, and a planned clean is far less disruptive than a breakdown. Out of sight is the usual reason a rural system goes too long without attention.
Working hours, access and the scale of the site can all change the price. Each of those is built into the quote, and the price is fixed before any work starts.
What you get with us
- One number for every site across the South East and London
- Evenings, overnight and weekends, plus 24/7 emergency callout
- Fixed quotes, usually within one working day
- Ventilation hygiene specialists since 2009
Read our cost guide and our accreditations.
What the work involves, part by part
Rooftop and plant room units
Units on roofs and in plant rooms can be awkward to reach. Access is planned during the survey, before we quote.
Drain trays
A tray that does not drain becomes a pool of stagnant water in the airstream. We clean it and report anything about the tray or drain that needs fixing.
What affects the quote in North Fareham
The price is fixed before any work begins. It’s based on:
- Travel, parking and unloading
- How big the system is
- The condition of the system
- Access, including roofs, risers and ceiling voids
What you pay reflects the actual work. That is why we survey first, from photos or on site, and why the quote is fixed before work begins.
Asking for a quote
To speed up the quote, please include:
- The times we could work without disrupting the site
- A few general shots of the system
- Your last certificate, test record or report
- Where the plant sits or the system leaves the building, such as a roof or outside wall
The quickest way to a quote is to send photos: the system from a couple of angles, plus any access panels or hatches. Add the site type and your opening hours, and we can price many jobs without a visit.
What AHU cleaning looks like in North Fareham
Food Standards Agency records list about 10 schools, colleges and universities, about 19 care, childcare and hospital premises and about 3 hotels and guest houses registered as food businesses within roughly a mile and a half of the centre of North Fareham. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. About 1.6 miles north-west of North Fareham is Knowle Hospital, the nearest hospital. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too.
Classrooms and halls at schools such as Harrison Primary School are easiest to work in when pupils are away.
North Fareham is about 1 mile north-east of Fareham, in Hampshire. We provide AHU cleaning for businesses, landlords and public buildings in North Fareham and the rest of Hampshire. 683 places in Hampshire are on our list, large and small. Portsmouth is in our area too, about 6 miles from North Fareham.
Every address in PO17 is covered for AHU cleaning, from busy streets to back roads. We also cover the places around North Fareham: Wallington (1 mile south), Fareham Common (1 mile south), Crockerhill (1 mile north), Welborne (1 mile north-west) and Boarhunt (1 mile east). Within a short drive, we also cover Winchester (15 miles north-west), Gosport (4 miles south), Havant (8 miles east), Eastleigh (10 miles north-west), Horndean (8 miles east) and Totton (15 miles west).
What’s near North Fareham
Locally, jobs take us to businesses close to The Golden Lion Public House, Cams Hill School and Wykeham House School and the streets around them. The closest station to North Fareham is Fareham station, roughly 1.3 miles south-west of the centre. Other landmarks nearby include Carron Row Farm Museum (2.7 miles west) and Fareham Shopping Centre (1 mile south). For a walk, there’s Portsdown Hill and West of the River Alver.
When it’s something else
Not every problem is solved by AHU cleaning, and we’d rather say so up front. It does not solve:
- Ductwork downstream of the unit, which is a separate clean
- Mechanical faults with motors, belts or bearings
- Leaking heating or cooling coils
If you’re not sure, just give us a ring on 0345 646 2711 or drop us a line and we’ll give you a straight answer.
What we work on in North Fareham
- Dampers and louvres
- Heating and cooling coils
- Internal panels
- Drain trays
- Supply and extract fans
- Filter sections