Peterson Oil Service is a family-owned business that provides clients with heating fuel delivery. The Peterson family has been in the oil business for more than 50 years. Howard Peterson started the company with just one truck and used his home as the center of operations. Peterson Oil Service has grown to include sales and service of heating equipment, air conditioning and plumbing. The company is one of the largest heating oil retailers in central Massachusetts. The company employs approximately 100 people and operates a fleet of more than 25 delivery trucks. Peterson Oil Service is located in Worcester, Mass.