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Bill Piske has extensive work experience in the mechanical contracting industry. Bill began their career at Johnson Controls in 1983, where they held various sales and management roles, including Director of North American Construction Sales. In 2006, they became the Owner and President of Lange Mechanical Services, LP, a company that prioritizes its employees and customers. In 2019, they joined Letsos Company as the Sales, Marketing & Business Development Manager.

Bill Piske attended North Carolina State University from 1979 to 1983, where they obtained a Bachelor of Science degree in Mechanical Engineering. In December 1983, they also received a Professional Engineer Certificate from the North Carolina State Board of Registration of Professional Engineers and Land Surveyors.

In January 1994, Bill obtained an EPA Clean Air Section 608 Universal Certification from the Mainstream Engineering Corporation. Bill later acquired an Unlimited Environmental Air Conditioning and Commercial Refrigeration & Process Cooling/Heating License from the Texas Department of Licensing and Regulation in December 2007.

Recently, in November 2021, Bill obtained a Conditioned Air Non-Restricted certification from the State of Georgia.