Putting Our Clients First

Duct Systems is committed to our clients, our design partners, our employees and our community. We love what we do, we have fun doing it, and most of all, we value our professional relationships.

Since our incorporation in 1992, Duct Systems has thrived on client satisfaction. President Tom Lee has dedicated his professional career to establishing and maintaining relationships built on trust, performance and client satisfaction. With 90% of our work derived from repeat clients, Duct Systems recognizes that these connections and positive relationships are fundamental to our success.

Established and Recognized

Since its inception in 1992, Duct Systems has defined itself as a trusted St. Louis mechanical contractor. Duct Systems is continuing to grow in size and staff to meet the demands of the ever-changing market.


American Subcontractors Association (ASA), 2009 MEP of the Year
American Subcontractors Association (ASA), 2012 MEP of the Year
American Subcontractors Association (ASA), 2014 MEP of the Year
American Subcontractors Association (ASA), 2015 MEP of the Year
SMACNA, 2005 Safety Recognition, 0-15,000 hours, 1st Place
SMACNA, 2006 Safety Recognition, 15,000-40,000 hours, 2nd Place
SMACNA, 2010 Safety Recognition, 15,000-40,000 hours, 1st Place

Links to Affiliate Sites

2100 North Lark Drive Fenton, MO 63026  |  Phone: 636-677-6100  |  Fax: 636-677-0314