About Certified Mechanical Certified Mechanical Company Founded in 1981, as a plumbing and heating contracting company. It remained primarily unchanged until 1986, when electrical and refrigeration services were added. The company continued to grow and in 1991 added sheet metal fabrication to the list of services. Progress continued throughout 1992 and 1993 as the company added fire protection along with many "hard to find" services such as backflow prevention, testing, inspection and paperwork ; sewer line camera work and water balancing services. In 2005 the company rededicated itself to plumbing and fire protection services only.