CT Fuel Delivery & Home Comfort Testimonials

We always love to hear feedback from our valued customers! If you’re pleased with our home heating oil services, propane delivery speed, HVAC services, or other customer care, please let us know by writing a Facebook recommendation or Google review.

“We bought our house in 2008 and we purchased our HVAC. Since then, we have purchased a heat system for our sunroom and we have had propane installed for the generators that we bought. J.J. Sullivan Inc. serviced and supplied all of them. They serviced our HVAC. We are extremely pleased with them. We have actually recommended them.”

- Janet E.

“Fantastic for sure! I switched from another company who I used because they had serviced the system when I bought my home. Over twelve years ago I made the move to J.J. Sullivan and I couldn’t be happier. The service is amazing.”

-Janet S.

“J.J. Sullivan supplies our oil for heating as well as a large propane tank for cooking and standby generator. They are always prompt and courteous. They have maintained and repaired our boiler/furnace. They come promptly when called and I have never had a problem with them. One day I thought I smelled gas and I called them and they were there within 10 minutes to inspect. Nothing was amiss but I appreciated their very prompt response. Service is great from start to finish.”

-Susan

“From the start, we found J.J. Sullivan’s staff to be prompt, professional, and friendly. We purchased our furnace, water heater, oil, and now propane from J.J. Sullivan. We think their service is great. Once, we had a problem with our heat on Christmas Day, and a staff person showed up wearing a Santa hat and fixed it!”

- Anonymous Guilford Resident

“We have used JJ Sullivan for our heating oil needs as well as for routine maintenance on our heating system since our first day in Guilford and they are terrific — a totally professional operation on every level, they value their customers and deliver cheerful and outstanding customer service without fail. Thank you JJ Sullivan!”

- George Agudow

Click Here To Leave A Google Review
Click Here To Leave A Facebook Review

Our Legacy of Fueling Connecticut Since 1925

1925

John J. Sullivan establishes the business with a three-pump gas station, a single truck, and oil and kerosene sold in five-gallon cans

1925-1940s

The company expands into new areas, including a satellite Buick dealership, grocery sales, fuel deliveries, and sand/gravel sales (the current oil storage area is still nicknamed “the pit” from this time).

Early 1940s

Following John J. Sullivan’s passing, ownership transfers to his sons, Tom and John F. While both serve in WWII, family friend and neighbor Judge Conway manages the business.

1945

Tom and John F. return home; John F. acquires Tom’s portion of the business.

1950s

The company relocates from Boston Post Road to River Street in Guilford, CT.

Mid-1950s

The business shifts focus primarily to fuel deliveries.

1963

Partners with Sheehan Oil, expanding fuel delivery services. Begins offering preventative maintenance and heating system repairs.

1988

Merges with Knowles-Lombard, continuing steady growth.

Mid-1990s

John F. retires and passes the business to his sons John, Paul, and Jim.

2005

Expands services to include air conditioning, led by Paul with assistance from John’s son, JP.

2010

John retires.

2011

Expansion into propane services begins.

2015

Paul retires.

2016

Merges with Madison Oil.

2025

Breaks ground on a bulk propane storage facility in North Branford.