West Sussex · Air handling unit cleaning

Air handling unit cleaning in North Heath, West Sussex

Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces for North Heath, with a survey first and a report with photos at the end. Call for a fixed quote.

  • Debris and leaves in the fresh air intake
  • Drain trays holding standing water
  • Plant that has been serviced but not cleaned

AHU cleaning across North Heath

AHU cleaning in North Heath, done properly

Every supply and extract system relies on the air handling unit at its centre: air is pulled in, filtered, conditioned and sent out through the ducts. Anything that collects inside the unit can end up in the rooms it serves, which is why we clean the unit itself, not just the ducts. We’re often asked to deal with coils clogged with dust and debris and dust built up on fan impellers, across internal panels, supply and extract fans and dampers and louvres.

Somewhere as small as North Heath, ducted ventilation is typically limited to a school, a care home, a surgery or a converted business building, wherever there is one, but where it’s fitted, it needs the same inspection and cleaning as anywhere.

For insurers and inspectors, the record counts. So every job comes with a written report and pictures, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.

The Duct Doctor team standing beside their branded white and blue vans
Where
North Heath (RH20)
Region
West Sussex
Paperwork
Photo report after every visit
Quote
A fixed price before any work starts
When we work
Nights, weekends or holidays to suit you
Call
0345 646 2711
Page updated
30 October 2026

Common problems we fix in North Heath

Most units live out of sight on roofs, in plant rooms or in ceiling voids, so they’re easy to forget about. Months can pass without anyone looking inside.

Most sites get in touch after spotting something like this:

  • Stale or musty smells from the ventilation
  • Plant that needs cleaning after a refit
  • Dirty coils holding back the airflow
  • Condensate trays that will not empty

An inspection comes first for any ventilation job around North Heath, so the cleaning matches what’s there.

Comparing quotes

  • What hours they’ll be on site
  • Whether the figure could change on the day
  • What paperwork you get at the end
  • What’s included in the scope, part by part

Choosing a duct cleaning contractor

What happens on the day

The visit has three parts: set-up, the treatment itself and the sign-off. Set-up means sheeting and making equipment safe, while signing off means the written report and pictures. Most of the time goes on the work itself, and that takes a single shift for a typical unit, longer for large or heavily soiled ones. Rural roads and tight entrances are worth telling us about before a visit to North Heath.

  1. The survey covers the unit, its access and how it can be shut down.
  2. We sheet the area and the unit is isolated.
  3. Each section is cleaned of dust, debris and slime.
  4. Coils and trays are cleaned and the condensate drain cleared.
  5. The unit is closed up and handed back, with a report to follow.

Preparing for the visit

  • Clear loose items from the work area
  • Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
  • Let us know when the site is closed or quiet

How to get a quote

To get a fixed quote, ring 0345 646 2711 or drop us a line 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 typically have a quote within one working day.

Get a price

Advice

What AHU cleaning can’t fix

Before booking, it helps to know what’s not included:

  • Coils that are corroded or leaking and need replacing
  • Ductwork downstream of the unit, which is a separate clean
  • Controls and BMS settings that run the unit

If in doubt, give us a ring on 0345 646 2711 or use the quote form and we will say what we think before booking.

Where we work

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

How we price AHU cleaning

Every site gets its own quote. This is what makes a difference:

  • The times the site is available
  • Whether several sites go on one quote
  • Any permits to work or inductions
  • Whether we need access equipment or extra panels

Kitchens, offices, schools and hospitals are all priced the same way: the size of the job, access, condition and working hours. Ask for a fixed quote and we’ll go through it with you.

What to send for a quote

The more you tell us, the more accurate the quote. With your enquiry, please include:

  • Your opening hours and when the area is out of use
  • Detail shots of panels, filters and grilles
  • Where the plant sits or the system leaves the building, such as a roof or outside wall
  • Photos showing the whole system and its surroundings

Some systems can be priced from pictures; others need a survey. Big or complicated sites, and systems that are hard to see in pictures, get a survey first. Either way, you get a fixed price before any work starts.

Aftercare tips

Simple habits between visits make a real difference. We recommend:

  • Report stiff or damaged access doors
  • Book the next check in line with the report
  • Flag stale or damp smells in the supply air
  • Note any water around the unit or leaks below it

The report suggests a date for the next inspection or clean, based on what we found. TR19® Air is risk-based, so the interval depends on the unit and how the building is used.

Check drain trays and condensate drains during routine maintenance. Catching a slow drain early stops standing water building up.

AHU cleaning in North Heath: local notes

At about 39 miles from central London, North Heath sits well inside the area we cover. We work evenings, overnight and at weekends, so the visit fits around the site.

Around North Heath, an air handling unit’s drain tray is checked for standing water as a matter of course.

North Heath is about 9 miles south-west of Horsham, in West Sussex. Wherever you are in the RH20 postcode area, we can take on AHU cleaning. North Heath is one of 371 towns, villages and districts in West Sussex where we work for AHU cleaning. There’s also a page for Brighton, roughly 18 miles from North Heath.

Our technicians cover all of RH20 for AHU cleaning and the roads nearby. Whether your site is on Gay Street Lane and Stane Street or a nearby road, we can help. Nearby, we also carry out AHU cleaning in Gay Street (1 mile south-east), Adversane (1 mile north), Codmore Hill (1 mile south-west), Broomershill (1 mile south) and Nutbourne (2 miles south). Larger places within reach include Crawley (15 miles north-east), Horsham (9 miles north-east), Worthing (11 miles south), Burgess Hill (15 miles east), Littlehampton (12 miles south) and Shoreham-by-Sea (14 miles south-east).

Near you in North Heath

The closest station to North Heath is Pulborough station, roughly 2.4 miles south-west. Not far away are The Mens.

Map of North Heath © OpenStreetMap contributors

Landlords, agents and facilities managers

Managing agents often deal with us directly. Tell us the site, the work and the access arrangements and we will come back with a fixed quote.

Keeping records across a portfolio is half the battle. Each visit produces a dated report with photos, so you can show an insurer or inspector what was done at each site.

What happens if it’s left?

Dirt left in an air handling unit doesn’t stay in the unit. It moves on into the ductwork and out into the rooms, which is why the unit and the ducts are best cleaned together. A fault that closes a site in a village like North Heath affects everyone who depends on it.

Combining work into one visit or one programme often makes better use of the time. Tell us about everything you’d like looked at and we will price it together.

Why North Heath businesses choose us

  • Evenings, overnight and weekends, plus 24/7 emergency callout
  • Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
  • Photo reports with every job
  • Fixed quotes, typically within one working day

See our cost guide and our accreditations and certificates.

Your questions about AHU cleaning in North Heath

Do you cover smaller places like North Heath?

Yes, North Heath is part of our area, however small the site. Photos of the system and directions to the site help us plan the visit.

Can the work in North Heath be done at night or at weekends?

Yes, evening, overnight and weekend work is normal for us. Your customers, staff or residents in North Heath needn’t be disturbed. Let us know the hours you are closed and we will book within them.

What does TR19 mean?

TR19® is the BESA specification for keeping ventilation systems clean. TR19® Grease, a standalone specification since 2019, covers grease in kitchen extract systems, while TR19® Air covers other supply and extract ductwork.

Which sectors do you work in?

Commercial premises of every kind: kitchens, offices, schools, healthcare, retail, leisure and food production. We fit the work around how the site operates.

Will we get paperwork for the AHU clean?

Yes, a TR19® certificate and a photo report. The report also suggests when the unit should next be inspected.

Do you survey before quoting?

Yes. For many sites, photos and a few details are enough, while bigger or harder-to-see systems are surveyed on site.

Do you repair air handling units?

Mechanical repairs to the unit are for your HVAC maintenance contractor. We’ll flag anything we notice during the clean.

What’s included in an AHU clean?

We clean the filter section, heating and cooling coils, drain trays, fan and internal casing. What happens to the filters is agreed when we quote.

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