Established in 1931, Nelson Air Device Corporation, or "Nelson Air", is one of New York’s leading construction management and mechanical contractors. We are known for our reliability, quality, and value. Nelson Air's hands-on management team specializes in client collaborations on design, new construction, renovations, retro-fits, and maintenance. We bring decades of experience and expertise to all projects with a top-notch staff of project managers and engineers. We have an in-house Local 28 Sheet Metal shop and work with Local 638A and 638B Steamfitters. We consistently deliver the highest quality work on time and on budget. Owner, Nelson Blitz Jr., has continued to offer a staff of Professional Engineers and Project Managers with exceptional experience and necessary skills to work with Owners, Construction Managers and General Contractors to design, value engineer and build. Nelson Air Device's Project Management staff averages over 20 years experience in the mechanical contracting industry. Nelson Air Device is devoted to collaborating with all of our clients to provide the highest quality HVAC systems, whether it is design, new construction, renovations, retrofits or maintenance on existing equipment. Built on Trust.