MicroMetl is the leader in HVAC Accessories Nationwide. Nearing our 50 year anniversary as a corporation, MicroMetl has nearly a half century of information and expertise.
In 1965 the Booher family founded the company in Indianapolis Indiana as General Sheet Metal (GSM). GSM manufactured and installed sheet metal duct systems for the local construction market before venturing into the HVAC accessory business. In 1990, the company was taken over by Gerald & Barbara Schultz who remain active owners still today.