In 1925, John J. Sullivan gave birth to J.J. Sullivan, Inc., a small company with a three-pump gas station, one truck in a small garage, and little more than five gallon cans of oil and kerosene. From this humble beginning, J.J. Sullivan has grown into a provider of fuel oil and propane services and sales to shoreline residences from East Haven to Old Saybrook, CT. En route to the comprehensive energy company it is today, we have experienced a number of transitions. J.J. Sullivan grew from a gas station to a provider of range oil to a full-service fuel oil and propane company.

Originally located on Boston Post Road, we moved to River Street in the 1950s. J.J. Sullivan enjoyed further growth when we joined forces with Sheehan Oil in 1963 and then Knowles-Lombard in 1988. The ownership and management of the company passed from founder John J. Sullivan to his sons John F. and Tom Sullivan. Today, responsibility for the continued successful operation of the company lies with grandsons Paul and Jim Sullivan and the fourth generation grandson JP (John Peter). Since John J.’s retirement, JP has been instrumental in establishing our propane division.

As the business has grown, so has the Sullivan family commitment to be an active part of the Guilford community with many contributions to local charities. With more than three-quarters of a century of expansion and growth, J.J. Sullivan remains a family owned business, combining traditional family values of service excellence with 21st Century efficiency and technology. With a staff of 15 employees and a fleet of trucks, we stand ready to provide you with all of your heating and cooling needs.

J.J.Sullivan has never lost sight of the vision and mission of its original founder, John J. Sullivan. “Keeping our friends and neighbors warm and comfortable” remains the essential philosophy guiding our services to customers.

We invite you to view our company highlight in Indoor Comfort Marketing magazine, titled “Family Owned, Locally Focused.” Please click the link below to view the digital version.

J.J. Sullivan Video