We are experts in determining sources of pollutants, evaluating their impact on your family or employees health. We provide solutions that are environmentally friendly and affordable.  AWS has been restoring HVAC systems throughout the Ottawa area for over 25 years using the guidelines and industry standards provided by NADCA (National Air Duct Cleaners Association.  Our mission is to provide an innovative study approach to measuring and remediating the quality of indoor air. Our professionals perform commercial and residential inspections, cleanings, maintenance and restoration of HVAC systems. Using the most advanced industry equipment, our NADCA certified, trained and experienced technicians ensure that your HVAC system is operating at the most efficient and affordable manner.