Ventilation hygiene audits. Deep cleaning and de-greasing of kitchen and grease extract systems. Pre Commissioning Cleaning. Air Handling Unit Cleaning and Disinfection. Ductwork Cleaning. Fire Damper Checking, Repair or Replacement. Disinfection and hygiene maintenance programmes. Ductwork Modification and Repairs. Filter supply and installation. Spray and Fogging Disinfection. Local exhaust ventilation testing.