
Healthcare
NHS trusts, private hospitals and clinical environments where ventilation hygiene supports patient safety, infection control and HTM compliance.
Inspection, cleaning, reporting and access programmes that protect facilities managers, estates teams and responsible persons against TR19, HTM and fire safety risk — across healthcare, commercial, industrial and marine environments.
From hospitals and manufacturing plants to vessels and commercial portfolios, we deliver ventilation hygiene programmes tailored to the standards of each environment.

NHS trusts, private hospitals and clinical environments where ventilation hygiene supports patient safety, infection control and HTM compliance.

Process extraction, LEV systems and production facility ductwork maintained to protect throughput, COSHH compliance and workforce safety.

Galley extract, accommodation ventilation and engine room systems serviced in port and drydock across passenger and commercial fleets.

Offices, retail, hospitality and mixed-use portfolios supported with planned ventilation hygiene aligned to insurer and FM standards.
Recent works delivered around occupied buildings, live wards and active production — planned out of hours where required, with full documentation on completion.

Clinical area ventilation inspection and cleaning, delivered around live hospital operations with full HTM-aligned documentation.

Team mobilised to Gran Canaria to clean onboard HVAC systems in drydock. Works included laundry ductwork deep cleaning & galley system grease removal as part of pre-planned maintenance.

Called in to a manufacturing facility due to extraction failure causing production delays. LEV ductwork inspected, cleared and returned to compliant operation.

Following major refurbishment and before handover, supplied and fitted access panels across a large ductwork system to bring it in line with TR19 access guidance.
Internal photography from Deduct Ltd inspections and works. Documented evidence forms part of every TR19 compliance report we issue — protecting your insurance position and audit trail.
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After
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AfterVentilation hygiene isn’t just about cleanliness—it’s about reducing risk, protecting occupants and demonstrating compliance. Deduct Ltd delivers inspection, cleaning, reporting and compliance programmes that help organisations stay audit ready across the UK.

Straight answers for facilities managers, estates leads and responsible persons.
TR19 is the BESA standard governing the inspection, cleaning and verification of ventilation systems. It defines how ductwork is assessed, cleaned and documented to meet insurance, fire safety and indoor air quality obligations.
Frequency is determined by system classification, usage and risk. Kitchen extract systems typically require cleaning every 3–12 months; healthcare and clean environments follow HTM guidance; commercial supply and extract systems are usually inspected annually.
Yes. Every programme includes pre and post-clean photographic evidence, access records and a compliance report aligned to BESA TR19, DW/172 and relevant HTM guidance — ready for your insurer, auditor or FM records.
Yes. Directly employed engineers operate across England, Scotland and Wales, with the capability to mobilise to marine and offshore assets internationally.
Under BS 9999 and the Regulatory Reform (Fire Safety) Order 2005, fire dampers must be tested at least annually by a competent person, with documented evidence retained by the responsible person.
Tell us about your premises and we'll arrange a free, no-obligation ventilation hygiene site survey anywhere in the UK. Our team will respond within one working day.
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