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.

By the mid 1970s, roof curbs and downturn plenums were being manufactured on a relatively small scale for Original Equipment Manufacturers and regional distributors. The free-cooling concept of economizers was catching on, and HVAC distributors across the country were looking for someone to fill their accessory needs. With the leadership of Pat Booher, the engineering creativity of Don Fisher, and the marketing of Bob Lawton, MicroMetl experienced significant growth throughout the 1980s. Innovative energy-efficient products and superior customer service led to MicroMetl being named as one of the Inc. 500 fastest growing small businesses in the U.S. for the years of 1983 and 1984.

In the late 1980’s plenums were becoming obsolete due to design changes to the roof top unit. Under the leadership of Jim Lindgren, Mark Webber, and Chris Schultz, MicroMetl Corporation began to expand geographically.

To better serve our West Coast customers, a manufacturing facility in Sparks, Nevada opened in 1994. In 2005 MicroMetl Corporation expanded to Longview Texas, and the Indianapolis Indiana plant remains the company headquarters.

Today MicroMetl is the largest manufacturer of HVAC Accessories and Energy Recovery Ventilation (ERV) systems in the United States. We employ hundreds of employees across America, and thanks to our loyal customers, we continue to grow!

We look forward to the future and to serving you in all your HVAC and ERV requirements.

Team MicroMetl

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