FIRE DAMPER TESTING Fire dampers operate in the event of a fire shutting off a section of ductwork and preventing fire from spreading around the building. Discover more LEV TESTING Local Exhaust Ventilation (LEV) or dust / fume extraction is designed carry away airborne contaminants before they can cause damage to health. Discover more INDOOR AIR QUALITY Indoor air should not contain contaminants that exceed concentrations known to impair health or cause discomfort to occupants. Discover more