NS Air Systems Inc. is dedicated to providing top quality mechanical work, repairs and customer service to its clients. Our technicians and trades personnel are the best in the business with vast expertise and knowledge of the many facets of heating, air conditioning and ventilation systems. We perform mechanical work listed below on commercial, highrise, residential, industrial and institutional locations: Ductwork & ventilation Refrigeration Recovery Rooftop Units Gas line installation Computer room installations Preventative maintenance Plumbing Hot Water Boilers Air Balancing Cooling Towers Heat pumps Air Conditioning and Heating layout, design, repairs and replacements.