John J. Kirlin isn't just blowing hot air. The mechanical contractor specializes in large heating, air-conditioning, and plumbing construction jobs. John J. Kirlin's projects represent a wide range of sectors, from sports and entertainment complexes to correctional facilities. It also works on industrial and high density residential projects. Medical and laboratory facilities work has become one of the company's specialties and is handled through its John J. Kirlin Special Projects company. Another division installs fire protection systems. John J. Kirlin operates through divisions in Florida, Maryland, and North Carolina. The company was founded in 1960.