Don Sr., a long time union pipe & steam fitter with an extensive background in HVA/C decided that he had served his time in the union and was done working for the “man.” So began his new journey and in 1975 Dorrian Heating & Cooling Inc. was founded. When he started the business, he was the owner, president, installer, service tech, dispatch and accountant. From time to time, he had help from his son Don Jr. and wife Pat. When Don Jr. graduated high school, he then became a full-time employee of the family business. Business was focused primarily on commercial work but also dabbled in the residential side. As the company grew, Don Sr. hired additional help to keep up with the workload.