At Bio Green Ontario our "Air Quality Consultants" focus on identifying the root and the nature of the problem by air sampling inside and outside your home. The results then help us determine what steps to take for the air your family or employees are breathing in. Our Process: Drop Sheets for certain areas to ensure outdoor elements do not come into contact with floors. Seal off each cold and hot air register to increase vacuum capability. Attach our truck mounted vacuum(also portable 12,000 CFM's) to your furnace "hot" and "cold" trunk lines for optimum suction power. Used compressed air(300psi) to force debris down to trunk lines while vacuum is performing. Clean furnace fan, motor, e-coil and conduct a water softner hardness test.