Due to the COVID-19 pandemic, our office will be closed to visitors until further notice. The office will be answering phone calls and email correspondence from 7am to 4pm, M-F. Any after hours emergency calls will be forwarded to our technicians through our answering service. Please deposit payments into our drop box to the right of our front office door or make a payment online.

We appreciate your business and understanding. Please stay safe.

The JJ Sullivan Team

We at J.J. Sullivan have been providing reliable fuel oil delivery and heating system service to the Guilford, CT area for more than 95 years. As a full-service energy company, we also offer propane fuel delivery, installations, and service; air conditioning installations and service; indoor air quality installations and service; and many coverage options for your heating equipment. Among our quality heating services are annual tune-ups, 24-hour emergency service, budget plans, pricing programs, oil tank protection, and comprehensive service plans. If you have questions or would like more information about any of our home comfort services, please contact our office and we will be happy to assist you!