London and the South East
AHU Cleaning in Portsmouth
We cover 19 towns and villages in Portsmouth for AHU cleaning, working out of hours with a written report and photos after every visit., planned around your opening hours, with a fixed quote before we start and a report with photos afterwards.
AHU cleaning in every part of Portsmouth
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces. Pick your town below to see the details for your area, and call or email us for a quick quote.
Main towns
Also in Portsmouth
- Commercial kitchen deep cleaning
- Grease filter exchange
- Extract fan repair and replacement
- TR19 inspections and grease testing
- Kitchen extract cleaning
- Ventilation duct cleaning
- Extract fan cleaning
- Ductwork cleaning
- Grease trap cleaning
- Canopy and hood cleaning
- Fire damper testing
Postcode districts
How AHU cleaning works in Portsmouth
Drain trays under cooling coils are meant to empty. If the outlet blocks, standing water and slime build up, in the airstream that feeds the building. Cleaning and clearing it is a key part of the job. We are often asked to deal with odours coming through the supply air and air handling units due a clean after building work, on filter sections, supply and extract fans and heating and cooling coils.
Protection comes first: floors, worktops and anything near the work are covered. After that, the system is made safe and the work begins. It takes half a day to a full day per unit, with large plant planned over several shifts, and we clear up before we go.
- We agree a shutdown window that suits the building.
- Before cleaning, each section is photographed.
- We work through the unit from the intake to the outlet.
- The fan and drain tray are cleaned and the drain checked.
- We take after pictures and issue the certificate and report.
How we quote
What you pay depends on the size of the system, the condition it’s in and how easy it is to reach. We give you a fixed price before we start, so you know where you stand.
Why book with us
- Full insurance on every job
- CHAS, SafeContractor and ISO 9001
- Photo reports with every job
- A single point of contact for sites across the South East and London
How to get a quote
Want a quote for AHU cleaning? Please ring 0345 646 2711, or email photos and tell us about the site. We will talk you through the work and give you a fixed quote before anything is booked.
Around Portsmouth
We work in commercial kitchens and buildings around Manor Infant School, Alexandra Park and St Wilfrid and the streets around them. Also close by are The Druids Arms (under half a mile north-east), The Portsmouth Academy (within half a mile south-east) and St Edmund's Catholic School (0.7 miles south-west). The nearest railway station is Fratton station, about 0.9 miles south of the centre. Other landmarks nearby include Royal Portsmouth Hospital (0.7 miles south-west) and Charles Dickens Birthplace Museum (within half a mile west). Not far away are Milton Locks and Portsdown Hill.
AHU cleaning across Portsmouth: local notes
In Portsmouth, systems range from big plant rooms in places such as Southsea, Milton and Landport to single units tucked in a roof void. Every system has filters, coils, drain trays and ductwork to keep clean.
London and the South East cover everything from city basements to rural kitchens. Wherever the site is in Portsmouth, the work is done to the same TR19® standard. Near the coast in Portsmouth, salt and damp speed up corrosion in fans, ducts and dampers, which is worth knowing when systems are inspected.
Portsmouth: Wherever a school like Manor Infant School has ducted ventilation, a half-term visit keeps the work out of lesson time. If you manage offices or shops near Fratton station, their ventilation can be inspected and cleaned out of hours.
Between visits
Here’s the after-treatment advice, short and simple:
- Don’t store bins or materials near the intake
- Keep inspection doors on the unit in good order
- Look at the condensate drain whenever the unit is serviced
- Note any water around the unit or leaks below it
Photos in the report cover the filters, coils, drain tray, fan and casing, and note any part we couldn’t get to. It also notes faults we spotted, such as damaged panels or a blocked drain.
Make the drain tray part of every maintenance visit. Catching a slow drain early stops standing water building up.
In-house cleaning or a specialist?
Day-to-day cleaning is something your team can do: wiping canopies, washing grease filters and recording it in a log. Inside the ducts, risers and fan is specialist work, and that’s where we come in.
Staff cleaning does not replace a specialist visit; it supports it. Clean filters and tidy surfaces slow the build-up, but the parts you can’t see still need a specialist at the right interval.
Why it fails
Dirt in an AHU matters in two ways: the unit supplies the air people breathe, and a dirty unit has to work harder. For the people using the building every day, that is the air they breathe for hours on end.
It’s time to book a visit if you see:
- Plant that needs cleaning after a refit
- Rooms that smell stuffy when the system runs
- Dust built up on fan impellers
- Air handling units never cleaned inside
Why deal with it now?
Tenants, auditors and owners may want proof that the air handling plant is kept clean. Our certificate and photo report give you clear evidence, for audits, tenants or your own peace of mind.
What your quote should include
- Whether a survey comes first
- What’s included in the scope, part by part
- Proof of accreditation you can verify
- When the next visit should be, and why
What affects the quote in Portsmouth
The price is fixed before any work begins. It takes into account:
- The scale of the work
- A single visit or a regular plan
- The number of sites or systems
- Site requirements such as sign-in and permits
When the work has to happen, how we reach it and how big the site is can all change the price. Each of those is built into the quote, and the price is fixed before any work starts.
What to send for a quote
You don’t need the technical terms. Just send:
- The paperwork from the last visit, if you have it
- Detail shots of panels, filters and grilles
- Where the site is and what kind of site it is
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
To get a fixed quote, ring 0345 646 2711 or drop us a line with the site type, your trading hours and a short description of the system. Photos and the last report, if you have one, make the quote quicker. You’ll usually have a quote within one working day.
Portsmouth: your questions answered
What accreditations do you have?
Duct Doctor is 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.
How long does an AHU clean take?
As a guide, it takes one overnight shift for many single units, with bigger plant phased. We plan the shutdown around that, out of hours if needed.
What do you need from me for a quote?
The site address, the type of premises and your opening hours, along with a few pictures and any previous report.
Can you clean without disrupting the building?
Yes, if daytime working isn’t practical. Tell us when the unit can go off and we will work to that.
Is there a report after cleaning?
Yes, a TR19® certificate and a photo report. The report also suggests when the unit should next be inspected.
What do you do with what you remove?
We take it away at the end of the visit. During the work, it’s contained to keep the area clean.
How much does AHU cleaning cost?
It depends on the site, so we quote each one individually. For a quote, give us a ring on 0345 646 2711, or email photos with the site type, opening hours and a few pictures.