Fsi Oil and Propane is a reliable supplier of propane, heating oil and kerosene for residents in Western Massachusetts. At FSi Oil and Propane, our commitment to quality heating and cooling service goes back to 1989. We are a family-run business based out of South Hadley, MA offering home heating oil and propane delivery, oil and gas heating service, air conditioning service, and more to keep our customers comfortable and safe throughout the seasons.