Hampshire · Air handling unit cleaning
Chalton AHU cleaning
Professional AHU cleaning in and around Chalton, booked around your opening hours and signed off in writing with pictures.
- Air handling units due a clean after building work
- Dirty filters cutting the airflow
- Units that have only ever had filter changes
AHU cleaning in Chalton, done properly
Our AHU cleaning covers sites in Chalton and the rest of Hampshire, in offices, schools, hospitals, care homes and retail. The work is timed around when the system can be switched off, including evenings, nights and weekends. If you have filters that are clogged or overdue and debris and leaves in the fresh air intake, we can put it right.
Rural buildings with mechanical ventilation, such as care homes and country hotels, often keep their units in roof spaces or outbuildings, where filters and drain trays get forgotten.
Duct Doctor has been trading since 2009, as a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
- Where
- Chalton (PO8)
- Wider area
- Hampshire
- Records
- Photo report after each visit
- Price
- A fixed price before work begins
- Working hours
- After hours by arrangement; emergencies any time
- Call
- 0345 646 2711
- Updated
- 30 October 2026
What affects the quote in Chalton
Every site gets its own quote. These are the things that affect it:
- The size of the system
- Parking and loading at the site
- A single visit or a regular plan
- Access, including roofs, risers and ceiling voids
A single site or a whole portfolio, we price it on the same basis: what needs doing, how we get to it and when. The price is fixed before work begins.
What to send for a quote
Many jobs can be priced from pictures and some basics. Useful things to send:
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- The roof, plant room or outside wall the system runs to
- Your last certificate, test record or report
- Any access panels or hatches you can see
There’s no standard price list, because no two systems are the same. We look at your system first, from pictures or on a visit, then send a fixed quote. To start, phone us on 0345 646 2711 or email us.
What a clean won’t put right
We’d rather tell you now than book work that will not help, so here are the limits:
- Ductwork downstream of the unit, which is a separate clean
- Coils that are corroded or leaking and need replacing
- Airflow problems caused by the system’s design
If in doubt, phone us on 0345 646 2711, or send details by email and we’ll say what we think.
Parts of the system we cover
- Supply and extract fans
- Filter sections
- Dampers and louvres
- Drain trays
- Heating and cooling coils
- Internal panels
What AHU cleaning looks like in Chalton
For Chalton, the closest hospital is Petersfield Community Hospital, roughly 4.7 miles north. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale. At about 54 miles from central London, Chalton sits well inside the area we cover. Evening, overnight and weekend visits are all possible.
Ventilation work in and around Chalton is risk-based: inspect, then clean what needs it.
Chalton is about 3 miles north-east of Horndean, in Hampshire. We provide AHU cleaning for commercial premises of every kind in Chalton and the rest of Hampshire. Chalton is one of 683 places in Hampshire where we work for AHU cleaning. Portsmouth is in our area too, about 10 miles from Chalton.
Work in PO8 is surveyed, quoted and booked the same way as anywhere else. Close by, we work in Blendworth (2 miles south-west), Buriton (3 miles north), Forestside (3 miles south-east), West Marden (3 miles south-east) and Weston (4 miles north). Within a short drive, we also cover Gosport (12 miles south-west), Havant (5 miles south), Fareham (12 miles south-west), Horndean (3 miles south-west), Alton (15 miles north) and Hedge End (15 miles west).
Near you in Chalton
Typical jobs here are in premises near Ditcham Park, among other places. Chalton’s nearest station is Rowlands Castle station, roughly 3.1 miles south of the centre. A little further out are Clanfield Earthwork (1.2 miles north-west) and Petersfield Community Hospital (4.7 miles north). Not far away are Windmill Hill.
Between visits
Looking after the system between visits is straightforward, and it makes the next visit easier:
- Note any water around the unit or leaks below it
- Keep inspection doors on the unit in good order
- Flag stale or damp smells in the supply air
- Keep the area around the fresh air intake clear
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.
What your team can do, and what needs us
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.
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 is our job.
For landlords and multi-site operators
We regularly work with managing agents. Tell us the site, the work and the access arrangements, and we will send a fixed quote.
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.
The process
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 anything from half a day for one small unit to several shifts for a plant room full of them. A quick note on how to find the site and where to park makes a visit to Chalton run smoothly.
- First we agree when the unit can be switched off, including evenings or weekends.
- We take before photos of each section of the unit.
- We work through the unit from the intake to the outlet.
- We finish with the fan section and the drain tray.
- After pictures are taken and the certificate issued.
Getting ready for the visit
- Allow time for equipment near the work to be turned off and cool down
- Move anything stored near the system
- Agree a time when the area can be out of use
Getting a quote
Here’s what helps us quote: the address, the type of site and when it’s open, photos of the system and the last certificate or report, if there is one. Once you have those, give us a ring on 0345 646 2711, or email photos.
Related advice
Nearby places to Chalton
Also in Chalton
What we are called out for in Chalton
Filters catch most of the dust, but not all of it. The fine dust that passes the filters lands on the coils, the fan and the internal panels, building up layer by layer.
What we are most often called out for:
- Fan sections that haven’t been cleaned in years
- Dust-coated heating and cooling coils
- Units needing a clean before a new tenant or handover
- Blocked condensate drains and slimy trays
Healthcare buildings such as Petersfield Community Hospital, about 4.7 miles north, depend on their ventilation; if you manage a surgery, clinic or care home near Chalton, yours matters too.
Comparing quotes
- Proof of insurance
- What hours they’ll be on site
- If they look at the system before pricing
- If the quote is a fixed price or an estimate
Common questions in Chalton
Can you come to Chalton after we close?
Yes, nights and weekends are routine for us. The work in Chalton can fit around your hours. Let us know the hours you’re closed and we’ll book within them.
Do you cover Chalton for AHU cleaning?
Yes, we work in Chalton and the places around it. A fixed quote typically follows within one working day of the survey details.
How often should an air handling unit be cleaned?
TR19® Air takes a risk-based approach, so it depends on inspection rather than a fixed interval. We recommend a next date in each report.
Is there a report after cleaning?
Yes. You receive a certificate and a report showing each section before and after, with any faults we noticed.
How do you keep the site clean during the work?
Protection goes down first: floor sheeting and covers over nearby surfaces and equipment. The area is left tidy, with our waste taken away.
Are you insured?
Yes, we are fully insured. We also hold CHAS and SafeContractor for clients who vet their contractors.
Do you have a 24/7 line?
Yes, any time. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line, and we’ll advise on what to do next.
Will you repair the fan or motor?
Motors, belts, controls and coils that need repair are a job for your maintenance contractor. We will flag anything we notice during the clean.