The Sobieski & Radius Group of companies is a multi-trade industrial, institutional, commercial and residential contracting and services group specializing in process piping, heating, ventilation, air conditioning, plumbing, fire protection and fire & security alarm systems. The company is family-owned and operated and is the #1 largest, privately-owned mechanical contractor in the state of Delaware.  The Sobieski family of companies has grown to include Sobieski Mechanical Contractors Inc, Sobieski Services Inc, Radius Services LLC and Radius Technologies LLC. 

The company celebrated its 20th year in business in 2006, and now has over 300 experienced, full-time employees in its four service divisions.  It possesses the depth and resources to handle any size job ranging from the smallest residential service request to the largest, most complex commercial installation. Mandatory safety and technical training programs ensure that each service and installation technician possesses the latest information on today's advanced heating and cooling systems.  Each of our employees is dedicated to do whatever is necessary to satisfy our customers needs and exceed their expectations.  We strive to be "easy to do business with".