Hampshire · Air handling unit cleaning
AHU Cleaning in Redenham
AHU cleaning in Redenham from ventilation hygiene specialists trading since 2009. Out-of-hours visits and 24/7 emergency callout.
- Drain trays holding standing water
- Air handling units never cleaned inside
- Dust built up on fan impellers
About our AHU cleaning in Redenham
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. Whatever builds up inside it travels with that air, so cleaning the unit matters as much as cleaning the ducts. Common call-outs are for blocked condensate drains and slimy trays and stale or musty smells from the ventilation, across filter sections, internal panels and supply and extract fans.
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.
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.
- Place
- Redenham (SP11)
- Region
- Hampshire
- Records
- Written report with photos
- Price
- A fixed quote up front
- Hours
- Overnight and weekend work, 24/7 emergency callout
- Call
- 0345 646 2711
- Updated
- 30 October 2026
Multi-site and managed buildings
From a single site to a large estate, you get the same standard: a survey first, a fixed quote, the work timed around the site and a report with photos.
Facilities teams in offices, schools and healthcare sites book us too across Hampshire. Work can be phased by floor, building or site around the people who use them.
When to call us in Redenham
No filter stops everything. What gets through settles on coils, fans and the inside of the casing, building up layer by layer.
If you notice any of these, it’s worth a diagnosis:
- Dirty coils holding back the airflow
- Plant that has been serviced but not cleaned
- Dust built up on fan impellers
- Filters that are clogged or overdue
Classrooms and halls at schools such as Appleshaw St Peter's CofE Primary School are easiest to work in when pupils are away.
Comparing quotes
- Proof of insurance
- Whether the work can be done while the site is closed
- Proof of accreditation you can verify
- How they set the interval to the next visit
Places near Redenham
Other services in Redenham
Why act early in Redenham
Standing water in a drain tray does not clear itself. Left alone, it can overflow, leak into the plant area or ceiling below and spread smells through the system. Dealing with it early keeps the clean straightforward. In a small place like Redenham, a system that fails can take a site out of use.
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 we start.
Why choose Duct Doctor in Redenham
- Out-of-hours work and a 24/7 emergency line
- Each visit written up, with photos
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Accredited under CHAS and SafeContractor, with ISO 9001
Read our cost guide and our accreditations.
What AHU cleaning looks like in Redenham
About 3.8 miles south-east of Redenham is Andover War Memorial Hospital, the nearest hospital. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes.
Healthcare ventilation, from large hospitals like Andover War Memorial Hospital (about 3.8 miles south-east) to small clinics, depends on clean filters, coils and ducts.
Redenham is about 4 miles north-west of Andover, in Hampshire. For AHU cleaning in and around Redenham, it’s easy to get a fixed quote: please give us a ring on 0345 646 2711 or use the quote form. We work across South East England and London, including Redenham. Redenham is one of 683 towns, villages and districts in Hampshire where we work for AHU cleaning. We also work in Southampton, about 24 miles from Redenham.
We work across the SP11 postcode area for AHU cleaning and the roads nearby. Neighbouring places we cover for AHU cleaning include Appleshaw (1 mile south-east), Faberstown (1 mile west), Clanville (1 mile east), Chute Forest (2 miles north) and Fyfield (2 miles south). Larger places within reach include Andover (4 miles south-east), Tidworth (4 miles west), Whitchurch (10 miles east), East Anton (5 miles east), Harestock (15 miles south-east) and Overton (13 miles east).
Around Redenham
Around Redenham, our work takes us to kitchens and buildings near Walnut Tree Inn and the streets around them. The closest station to Redenham is Andover station, roughly 4 miles south-east of the centre. A little further out are Ludgershall Castle (2.6 miles north-west) and Andover War Memorial Hospital (3.8 miles south-east). The countryside around Redenham includes Quarley Hill and Anton Lakes.
What affects the cost of AHU cleaning
You will get a fixed price before any work starts. It’s based on:
- How many systems or sites are involved
- Travel, parking and unloading
- What state the system is in
- How big the system is
What you pay reflects the actual work. That is why we survey first, from pictures or on site, and why the quote is fixed before any work starts.
Helping us quote
You do not need the technical terms. It helps if you can send:
- How we’d reach plant on a roof or in a plant room
- Any previous report or certificate
- Your opening hours and when the area is out of use
- The postcode and the type of business
There’s no standard price list, because every site is different. We look at your system first, from pictures or on a visit, then send a fixed quote. To start, call us on 0345 646 2711 or use the quote form.
How the visit works
We work around your opening hours, not the other way round. Most visits are booked for when the area is out of use, such as evenings, overnight, early mornings or weekends. When the team arrives, the work area is protected and the relevant equipment is switched off to cool, and the job takes a single shift for a typical unit, longer for large or heavily soiled ones. If you can send pictures, we can arrive in Redenham knowing what to expect.
- We look at the unit and the plant area during the survey.
- The area is protected and the unit made safe.
- Dirt and debris are removed from each section.
- Coils and trays are cleaned and the condensate drain cleared.
- The unit is closed up and handed back, with a report to follow.
How to prepare
- Dig out any earlier paperwork for the system
- Move anything stored near the system
- Let us know when the site is closed or quiet
Get a fixed quote
To get a fixed quote, ring 0345 646 2711, or send details by email and tell us the type of site, your opening hours and roughly what the system looks like. Photos and the last report, if you have one, make the quote quicker. You will normally have a quote within one working day.
Related advice
Questions from Redenham
Do you work in villages like Redenham?
Yes. Villages and rural sites across the South East are part of our work, Redenham included. Just mention lanes, gates or anything else about the site when you book.
Can you work in Redenham outside opening hours?
Yes, evening, overnight and weekend work is normal for us. The work in Redenham can fit around your hours. Your opening times are the first thing we ask for.
Which accreditations do you hold?
Our accreditations are CHAS, SafeContractor and ISO 9001, and we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. Vent Hygiene Elite is run by BESCA and independently audited.
Do you offer emergency callouts?
Yes. There’s a 24/7 emergency line, for problems that can’t wait. Call us any time and explain what’s happened.
Do you clean the ductwork as well?
Yes. We clean supply and extract ductwork to TR19® Air as well. Cleaning the unit and ducts together often makes sense, and we can quote for both.
What do you clean inside the unit?
All the internal parts the air touches, from intake to discharge, including coils, fan and drain trays. You get a photo report showing each part before and after.
Can we book visits on a schedule?
Yes. Scheduled maintenance plans are part of what we do, with visits at the interval your system needs. The report from each visit recommends the next date.
Do you work with multi-site operators?
Yes. We work across South East England and London, so we can schedule a run of sites as one programme. Each site gets its own report and pictures.
Staff cleaning versus specialist work
Logging matters as much as cleaning. A simple log of filter washes, wipe-downs and checks shows an inspector that the system is looked after between visits, next to our reports.
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. Reaching it takes a specialist with the right equipment.
Different parts, different methods
Filters
What’s on the filters is a good clue to what’s further in. They’re photographed before and after for your records.
Internal casing and panels
Loose or damaged linings inside a unit can break up into the airstream. Anything like that is recorded with photos.