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Kind words and comments from our clients

The mission of John Duffy Energy Services has been the same from its very beginnings. Our goal is simply to provide customers with reliable, friendly, and professional service. We want nothing less than your full satisfaction with our products and services. That’s why it’s so gratifying when our clients, throughout New Jersey, submit their own testimonials and endorsements. We treasure these as if they were personal thank-you notes, and we display these John Duffy Energy Services customer reviews here simply to show how much our customer-driven approach to business is paying off.

testimonials“Please accept my thanks to you, all your staff members and especially Mr. Ted Duffy for excellent courteous service through almost the past decade. It was indeed a great pleasure working with your company.” —Trilok P.
testimonials“I inherited this house, the same house I grew up in, from my father, who was a loyal Duffy customer for many years. We plan to keep up that tradition, because your employees are always so pleasant and thorough, and they take pride in their work.” —Linda K.
testimonials“The John Duffy Energy Services went above and beyond in responding to our recent requirement for gasoline at the Ellis Island-Statue of Liberty National Monument. The National Park Service couldn’t be more pleased with your company’s rapid response, and outstanding turnaround time. It was a real pleasure doing business with your firm.” —Kathleen R., Purchasing Agent, U.S. Dept. of the Interior
testimonials“I want to take this opportunity to express my appreciation for the excellent work performed by your repair technician. He was prompt, highly professional and pleasant. I was impressed with both his work and the fact that he left our basement as clean as when he arrived. My congratulations to John Duffy Energy Services for its outstanding repair service!” —Wallace F.

To learn more about John Duffy Energy Services’ products and services, or to submit a testimonial of your own,

Contact Us

Office Address
465 Mulberry St Newark NJ 07114-2736

Mailing Address
P.O. Box 5610, Newark, NJ 07105