Williams Oil Company offers heating oil delivery for your home and business. We are a family owned and operated company and have been proudly serving Southeastern Connecticut for over 30 years. We offer discount fuel priced below most discount companies, as well as diesel and kerosene. We take the time to explore your needs and explain our delivery options, so that we find the plan that will best suit your needs and budget. We are members of Independent Connecticut Petroleum Association (ICPA) and New England Fuel Institute (NEFI)..