Founded in 1898 by company namesake D.E. Duffey and steeped in a rich tradition of prompt, courteous service, D.E. Duffey & Sons is a locally owned and operated family business that's all about building and nurturing relationships. Since our company began serving suburban Philadelphia at the close of the 19th century, we've never been interested in making a quick buck. We relish and take pride in establishing long-term customer relationships. It might begin with helping you pick out a new heating or cooling system or with a simple heating oil delivery, but no matter how we meet, you'll see right away that D.E. Duffey & Sons is not some fly-by-night operation. From delivery and installations to maintenance, repairs, service contracts and more, we work with and for our customers, providing consistent and dependable service to earn your trust and your loyalty.

D.E. Duffey

Org chart

Teams

Offices