Now offering plumbing services!


Mystic, CT’s Oil Provider of Choice

Your local heating oil company, Densmore has been serving Southeastern CT and Southwestern RI homes with reliable Bioheat Plus® fuel delivery and heating service since 1949. As we’ve expanded our services over the years to include automatic fuel delivery, heating service plans, air conditioning services, plumbing services, fuel payment programs, oil tank protection, and more, we remain true to the cornerstone of our business – customer satisfaction. Find out what our customers are saying about Densmore Oil today.

HVAC Service You Can Count On

As a full-service, family owned and operated business, we take pride in providing personal, courteous service and competitive heating oil prices for our customers. Our skilled employees take part in valuable seminars and classes to ensure we are always up to date with the latest technologies and service offerings.

When Ray and Donna Densmore set up shop in their Old Mystic home in 1949, they understood the true value of a family owned and operated business. Now, 70 years later, Densmore is still family owned and operated, continued by their granddaughter Jamie. Jamie runs the company out of a beautifully restored building on Water Street, in the heart of downtown Mystic, CT. Today, Densmore is a 3rd-generation, female-owned company.

Densmore Oil Company & Our Community

We Make Warm Friends is more than just a slogan that Donna Densmore dreamed up over 60 years ago; she understood the value of a family owned and operated business. By putting the family name on every service van and fuel delivery truck, we’ve continued to maintain the importance of a warm, friendly, family attitude.

In the past 70 years, Densmore Oil Company and the Densmore family have donated over $25,000 a year to local charities, youth sports teams, local hospitals, community associations, and the Stonington High School scholarship fund.

Our Military Discount

Are you part of the US military? If so, we invite you to take advantage of our military discount, which offers all active military and veterans 4¢ off each gallon of heating fuel ordered from Densmore Oil. We have a family history in the service, and we would like to use this discount to show our appreciation for your dedication to our country. Thank you for your service!


Jamie Densmore - Local CT Oil Company Owner

Densmore oil delivery owners