P J Mechanical was founded in 1971 by Peter J Pappas who is serving as the Chairman of the company. The company works with highly qualified and experienced staff, with senior staff having an average of 20 years of experience with the company. They provide 24 hours service to their clients. The company has more than 1000 service locations for providing services to their customers across the New York City. The company follows LEED (Leadership in Energy and Environmental Design)-certified guidelines, implements energy-efficient technologies in many of its major projects. The company has completed many projects in which they have implemented eco-friendly technologies such as Gotham Center project, Bank of America Corporation office tower, Citigroup Inc., WNYC, and Yankee Stadium. It also has received LEED Silver Certification and Gold Certification for its energy efficient green projects.