Ductwork and AHU cleaning to BESA TR19, kitchen extract to TR19 Grease, fire damper testing, ventilation installation, service and repair. Delivered by Clean Ducts, a trading brand of Gemini AMPM Ltd, and by Gemini's own ventilation division.
Ventilation is where air quality and fire safety share the same metal. The ductwork a building breathes through collects dust that degrades the air and the plant; the kitchen extract collects grease that burns; the fire dampers inside both are the only thing holding the compartment line where a duct passes through a wall. All three are inspected, cleaned, tested and certificated by the same group, to the same paper trail.
Clean Ducts carries the hygiene work: camera-verified ductwork cleaning and air handling unit cleaning to BESA TR19, kitchen extract deep cleaning to TR19 Grease, ductwork CCTV condition surveys, and the reports and photographs that go with them. Gemini AMPM's ventilation division carries the engineering: fire damper testing and remediation, AOV and smoke extract, AHU and ductwork installation, service, repair and commissioning.
Every job closes with a report: photographs before and after, test results and the certificate, filed against the asset so the record exists when the insurer, the fire risk assessor or the regulator asks for it.
Clean Ducts is a trading brand of Gemini AMPM Ltd · BESCA Vent Hygiene Associate · cleanducts.co.uk ↗
A damper that fails its drop test is not a cleaning problem; it is a hole in the compartmentation, and Gemini AMPM's FIRAS-registered passive fire team can seal around it or replace it. A duct run past saving is a mechanical job for AMPM Building Services. A kitchen extract that needs an access panel before it can be cleaned gets one fitted on the same visit. The lines share a number, a programme and a record.
AHU and ductwork hygiene for wards and theatres, damper testing across compartment lines, kitchen extract for catering, cleanroom commissioning and validation.
TR19 cleaning of landlord AHUs and risers, damper testing programmes floor by floor, tenant kitchen extract to TR19 Grease.
Kitchen extract cleaning in the holidays, ventilation hygiene and damper testing to a term-time calendar.
Kitchen extract to TR19 Grease for restaurants and food courts, damper replacement in plant basements, AHU cleaning for pools and gyms. Splashpoint Leisure Centre is the reference point.
Smoke extract and AOV maintenance, damper testing in service risers, communal ventilation in social housing.
BESA TR19 Grease sets the interval by the kitchen's hours of use and the grease actually measured in the duct, not by a fixed calendar. A survey measures the deposit thickness and gives you a defensible interval, which is what an insurer wants to see.
Very often, yes. Kitchen extract cleaning to TR19 Grease is a common condition on commercial property policies, and a fire with an uncleaned extract can put a claim at risk. Check your policy wording; the certificate and photographic report are what the insurer asks for.
Yes. Each damper is inspected, drop-tested, reset and reported with a photograph. Dampers that fail are scheduled for repair or replacement by Gemini AMPM's ventilation and passive fire teams, so the test does not end with a list of problems nobody owns.
Gemini AMPM Ltd. Clean Ducts is its trading brand, so the same company, the same insurance and the same 0330 043 0080 line stand behind the work.
Call 0330 043 0080, day or night, or book a site survey. The work is delivered by Clean Ducts and Gemini AMPM Ltd.