About Us

Reliability, Quality, and Value

Nelson Air Device Corp. (“Nelson Air”) is one of New York’s leading full-service Construction Management and Mechanical Contractors.

Known for reliability, quality, and value, Nelson Air works closely with owners, engineers, construction managers and general contractors on all aspects of any project, from initial design to new construction, renovations, retrofits and ongoing maintenance on existing equipment.

Institutional and Individual Projects

In the past 23 years, Nelson has completed over $1 Billion in institutional projects, and we regularly complete individual projects with revenues exceeding $25 Million

Completed Healthcare and Institutional Projects Since 2000
Single Contract Revenues
Year Founded
Full-Time Project Managers
Avg. Years of Experience for Project Managers

Experienced HVAC Healthcare Specialists

  • We are one of the NYC’s most experienced HVAC healthcare specialists and are well versed in the design and construction ORs, labs, patient rooms, MRI, and Linacs.
  • Since 2014 we have offered turn-key construction management services directly for end users.

In-house Local

  • We have an in-house Local 28 sheet-metal shop (CW Sheet Metal, Inc.), a Local 638A Steamfitter entity (N&C Mechanical) and Local 638B Service and Maintenance company (City Piping Inc).

  • Our in-house piping and sheet metal design/drafting department is well versed in 3D BIM modeling, Revit, and Navis work with the capacity to handle the largest of projects.

  • With offices in Queens and Manhattan our team can promptly be anywhere within the New York area.
Sheet Metal Shop


For nine decades we have cultivated our skills, deep knowledge, and expertise. We are well-versed in a broad range of project types.


We are a hands-on management team with ownership that demands perfection.


We are proud of our long-standing reputation for delivering on-time, on budget, and to complete satisfaction.

Executive Management

Mike Hansman
Mike Hansman

Chief Executive Officer

Tom Howard
Tom Howard

Chief Operating Officer

Scott Niemann
Scott Niemann

Executive Vice President Of Operations

Kesh Bachu
Kesh Bachu

Director of Service and Maintenance

Built on Nine Decades of Trust

Our project management team averages more than 20 years of experience in mechanical contracting and is equipped to oversee all aspects of mechanical construction, including safety, LEED, and  coordination.

Find out more

We are devoted to collaborating with our clients.

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